Classic Dirt Bike Issue 55 Preview

CORONA! CAN'T RIDE! CANREAD - COB BACK ISSUES AVAILABLE!

PLUS

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-ewes AGENTS THROUGHOUT

We use

~ and

CIIX Zippers

SUPER SPORTSMAN A real hide jacket with four outside pockets and zip cuffs. Racing style collar and centre zip front. (Illustrated in light blue). First released 1973.

SUPER LIGHTNING Lancer style: First released: 1972 incorporating long length back, to exclude drafts, twin side strap adjusters and a total of five pockets (illustrated in red, rider bike behind) EUROPA Lancer style: First released: 1972 incorporating long length back, to exclude drafts, twin side strap adjusters and a total of five pockets (illustrated in red, rider bike behind)

SUPER MONZA

FLYING

VINTAGE RACING TYPE SOLE WITH GOODYEAR WELTED SYSTEM

BOOTS ALL

OF THESE

LEWIS LEATHERS SUPER MONZA First released: 1973, incorporating racing style collar with a lancer style zip front.

Fashionably tailored, it features padded shoulders and is cut longer for extra warmth. (Illustrated in dark blue).

THE DEVIL

AND

LTD

www.lewisleathers.com

MORE ARE

MOTORWAY

AVAILABLE

BOOTS

AT:

Personal callers are welcome at: 3-5 Whitfield Street, London W1T 2SA Tel: 020 7636 4314

JACKETS TROUSERS BOOTS GLOVES BAGS GOGGLES ACCESSORIES Our leatherjackets are hand cut and sewnby craftsmenin Londonusing the exact same techniques and attention to detail as found in our classicproducts of the 1930>to the 1980>.Theydo not conform to current PPEstandards.

IS IN THE DETAIL •••

IN BALANCE

Staying safe Thanks to the coronavirus all sports have been restricted, not just ours.

U

sually the subject of this column is specific to a certain section of the world's population, the section which enjoys riding older off-road motorcycles in the variety of events which have arisen since clever people devised propulsion units to fit into cycle frames.

Occasionally the subject drifts into areas where people are trained or learn to do manual tasks with a view to earning a living. Rarely do my words reflect the wider world as a whole - it is only when such things as the coronavirus pandemic currently sweeping the world impact on everyone, regardless of their circumstances or interests, that we find our scene aligning with all others.

Governments and health organisations around the world have issued one common instruction for dealing with this virus - stay at home. This has seen the cancellation of major events, gatherings and social interaction globally.

Now, it may be frustrating and inconvenient to cancel or postpone a much anticipated event due to circumstances beyond the control of the organisers but it is just 'frustrating' and 'inconvenient; unlike catching the virus which would be a whole lot worse.

Prior to this pandemic the biggest impact on our sport has been animal foot and mouth epidemics, which involved restrictions on where events could be held.

Perhaps many readers will recall the foot and mouth outbreak in 2001 which caused the postponement ofThe Classic Motorcycle Show of that year, and maybe

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See page 42 for details.

'-So, you'rein the workshop and looking at a11those littlejobs you've meant to do but never had the time...~ older readers will hark back to the foot and mouth outbreak in 1967.

As these words are being written the UK is a few weeks into a lockdown as the Government attempts to control the spread of the virus. Other countries too are restricting the movement of the population and there are signs such tactics are working. So hopefully things can begin to return to normal and I also hope you haven't been affected beyond the inconvenience of an event or two being cancelled.

As many enthusiasts are prevented from attending their normal place of work due to restrictions there will likely be an upsurge in the time spent in workshops, garages, sheds or wherever your motorcycle resides.

So, you're in the workshop and looking at all those little jobs you've meant to do but never had the time; or maybe there's even time to start the bigger tasks for which you've got bits stockpiled. It's a two-fold situation for me as there are lots of things to do that come under the 'small-job' banner but often turn out to be more involved.

For instance, I've had a bit of a clear-out recently and both my 340 Bulto and TY Mono Yam have gone to new homes, there were a number of reasons for this, biggest one was my very understanding other half making the suggestion if I had less bikes maybe more of them would work better.

To be brutally honest this is something we motorcycle enthusiasts - as a species know to be true but we also know a) we'll get round to it one day orb) it's not that bad as we survey the bikes in the shed.

The Bulto was what I wanted in 1981 but couldn't get one then, the Yam brought

back fond memories of riding a similar one in the SSDT,but both have gone and released funds for some other tasks.

On the subject of the involved jobs, I've taken to riding my lad's Fantic 201 and found it a thoroughly enjoyable machine to ride, but last time out I popped a fork seal and this is a job waiting to be done. The seals were easily available from Bill Pye's Fantic establishment but the difficult bit was finding out how much oil to put in the forks when rebuilding them. All attempts to find a manual have proved fruitless and even the information sheet I have tells me all sorts of specs except the fork oil.

I could have asked Bill, but I forgot ... several times ... then a fellow 201 owner OIiy Waring told me how much he puts in his forks so that's sorted, but I just know as I strip the bike out there will be more things that need attention.

The next little task is the crank seals in the 200 Montesa Cota belonging to my uncle - a fairly handy rider in the Fifties.

I picked up a set of seals atTelford and they're there waiting to be fitted. Problem is the bike is in serious need of looking over and I know pulling it apart will reveal horrors because of what's been needed so far, but it will have to be tackled or the thing won't ever run again - unlike motorcycle sport which will restart once the pandemic has been defeated. Stay safe.

SUMMER

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Regulars 03 In Balance All sorts of things impact on our sport, for 2020 a virus is causing upheaval.

06 News and views This is where we keep you appraised of what is going on in the world of older off-road motorcycles.

42 Subscribe This is where we show you how to ensure your copy of CDBarrives on your doormat.

74 Dirt Talk Your comments on the stuff we've had in the mag recently.

82 Moto Memories Dave Thorpe - the MX one - sets his stall for future world success.

On the cover Gary Chapman posed this shot of Mark Mumford's 360 Pursang in the paddock area of the Northampton Classic Club Ltd's Woodford scramble.

41Contents

Features 10 Ultimate Ariel One man's drive to make the ultimate Ariel trials bike ... this is his story, no names have been changed to protect anyone ...

18 Bikes you couldn't buy There are motorcycles which everyone knows about, they're in the press week in, week out, yet couldn't be bought. We look at Jeff Smith's BSA.

24 Pioneering trail OSSA made an Endure bike but in North America it became the Pioneer - nice looker.

28 That was the year that ... ... Britain dominated the MXdN in horrendous conditions at Cassel in Northern France.

38 Super but not stock Take one shabbyYammy and make it seriously yummy so it turns heads in a show and at the track.

68 Pure performance Bultaco's Pursang model came in all sorts of sizes. We catch a 360 Mk.7 which looks and goes like a dream.

76 Know the alphabet Well at least the Velocette alphabet, where MOV and MAC mean quite a bit.

Events 55 CDB'sbig show of 2020 Lots to see and do at Telford - brought to you by Hagon Shocks.

62 Pre-65 Scottish This was to be about the 2020 Pre-65 but the coronavirus pandemic had other ideas. Instead, here's a look back over previous years.

Technical 46 In the workshop Jerry blames me, I blame Jerry but work restarts on various projects and more is done to the Triumph.

52 Dirt products This is where kind people send us pies of stuff they have which will make you faster, safer, more stylish, feel good and make you a superstar (actually we made that bit up, but if it's in you these products will bring it out.)

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DIRTNEWS As this is being written, we are still in lockdown here in the UK, as the authorities attempt to limit the spread of the Covid-19 pandemic.

There are talks and news reports of restrictions being eased as they have elsewhere in the world where the virus hit earlier than in the UK, but at the moment these are just talks and no official Government decisions will be made until after our deadline day, which makes it too late for us to include.

What form such easing of restrictions will take is unknown, there is a need to return to some form of normality but the difficult bit is judging the effect on the health of the nation.

As events and gatherings are postponed or cancelled there are some major casualties and further on in news there are reports from organisers offering what news they can of their particular happening, meanwhile here is the latest on the shows run by CDB's publisher Mortons.

Currently, it is hoped the 2020 Carole Nash Classic MotorcycleShow will be able to happen on August 15/16 at the Staffordshire County Showground. Obviously this will depend on the speed of restriction lifting and what effect the virus is still having.

As for the popular autojumbles at places such as Newark, they may start in September, though again this will depend on the Government advice on gatherings and events.

Further along, the Carole Nash ClassicMechanics Show, scheduled for October 10/11, and the 2020 International Dirt Bike Show on October 31/ November 1 are looking good, unless of course Government advice changes things.

Looking even further ahead, the dates for the Hagon Shocks sponsored ClassicDirt Bike Show at Telford are February 13/14, 2021, when we hope this pandemic will be a distant memory.

Up-to-date information on all the shows can be found at www.classicbikeshows.com

COBat the International Dirt Bike Show 2019.

Bonhams' Auction at Stafford.

COBShow 2020 before lockdown.

Laird, Jamie Williamson who is our Trial Patron. We have made use of the estate for trials for near on 40 years and we work well together as our management of the events we hold there are done with the full co-operation of the estate."

He added: "We are already making plans for the rescheduled event and I am

in contact with my fellow directors and the committee on a regular basis by electronic means during this virus pandemic.

"We look forward to running the Highland Classic Thro Day Trial, Fantic Edition 2021, we hope to have a great time then, when our sport has returned back to normal."

Highland classic trial Also falling victim to the position on the official entry list or reserves list. effects of the coronavirus is the 'The proviso that any entrant Inverness DMCC'sHighland who wished his or her entry Classic Thro Day Trial.

Given the advice from both fee returned, upon application, the Government and the SACU, would be attended to within the club have postponed the seven days.'

Full co-operation was event until June 12/13, 2021.

The club feel that protecting received from the landowners, the NHS and the actual health Alvie Estates Ltd, which the of the population is the prime club have an excellent working consideration and while relationship with. disappointing to all concerned Company secretary, John staying safe is more important. Moffat said: "We are very For those already entered, grateful to David Kinnear and the following information his team at Alvie Estates for outlines the nitty gritty of agreeing the 2021 date and holding the event over: 'The making our postponement preservation of the rider's entry as painless as possible. Mr fee for the rescheduled event Kinnear is the Factor for the with competitors holding their Estate company, headed by

6 I Dirt news

Pre-65 Scottish Trial 2020 Many ofus in the feet-up world would have been in Scotland in the early part of May, for the Pre-65 and the SSDT,both of which are casualties of the pandemic.

As far as the Pre-65 is concerned, we received the following communication from Anne Gordon at the end of March: "As you will no doubt have already heard, unfortunately, following developments and directives from the Scottish Government, the Scottish Auto Cycle Union has cancelled all motorcycle events until at least May 31, 2020. This regrettably means that the decision to cancel the Pre-65 Scottish Trial has been taken out of our hands."

As a result of this, at a committee meeting which took place on March 19, 2020, the following was agreed and emails have been sent out to all riders, reserve riders, sponsors, programme advertisers and observers/officials to inform them of the cancellation and, where applicable, the choices they need to make.

Options for riders A) Entry and fee to be carried forward to the following trial provisionally scheduled for April 30 and May 1, 2021. This would be subject to the standard entry rules regarding machine eligibility changes, machine substitutions and entry withdrawals. If this option is chosen, a full refund would be available up to February 5, 2021, should your circumstances change and withdrawal become necessary.

OR: B) A full refund now and entry would NOT be carried over to 2021.

Options for reserve riders A) I wish to remain on the reserve list for the 2021 event. I understand that I will be moved up that list to take account of those who had already been successful in gaining a place ahead of me in 2020 before the trial was cancelled.

OR:

Everyone has that 'one' friend ... Lee Granby overcomes his natural shyness, Jim Hough just accepts it.

B) I do not wish to remain on the reserve list.

Please note that the email addresses for several entrants have bounced back so if you have not been contacted, please get in touch with the secretary as soon as possible for your options secretary@pre65scottish.co.uk The Pre-65 Scottish Trial Committee hopes everyone stays safe and well until this unwelcome virus is brought under control and we can resume our normal lives and our sport.

Yours in Sport Anne Gordon Secretary Pre-65 Scottish Trial

Prize time

Vets

Before all of the sport and associated meetings were cancelled due to the pandemic, Northallerton DMC managed to hold their Turinshock Club Championship Prize Presentation at the Black Horse Inn, Swainby.

As always with club events there was a good tum out on the night and amid the celebrations Geoff Simpson was on hand to award the trophies.

Over the season, six events were pencilled in but only five ran, one cancelled due to bad weather.

Rillington's Martin Pierson retained the trophy with a remarkably consistent season on his SWM - only one win from five - but finished well clear on points from Fantic rider Mark Hardy and Bultaco-mounted Tim Bell. Over the five rounds more than 40 riders took part in all events.

The event also included a presentation from the East Yorks Club, and East Yorks Turin shock Champion, Dave Bell, attended and received the trophy from East Yorks Secretary, Ann Watson. The coming season was looked forward to, but what will go ahead is unknown.

There is a lot of uncertainty in the sporting world and until the pandemic is under control or its effects reduce then organisers of events are unable to commit to definite answers as to when their event is on. Obviously the later the event the more chance there is of the pandemic being less problematic and the Vets MXdN at Farleigh Castle, being in September, may well happen. Organiser Dave King tells us any decisions as to what will happen are to be made in June when the Government guidelines on lifting lockdown will be known. Meanwhile check www.vetsmxdn. co.uk for info.

MXdN

Martin Pierson in action.

Left to right: Mark Hardy, Tim Bell and Martin Pierson.

Dave Bell, presented with his trophy

by EastYorks secretary Ann Watson.

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After a great attendance from Kia National Twinshock Trials Championship riders and fans at the Hagon sponsored ClassicDirt Bike Show at Telford, there was a lot of interest in the series.

Prize presentations were handled by 1979 world champion Bernie Schreiber and the organisers were looking forward to perhaps their best year ever with respect to the venues and clubs on board.

Bernie showed a lot of interest in the series and planned to ride in the double header in Devon in June.

The weather hit the first round at Knighton, cancelled due to the parking areas being waterlogged.

Round two went ahead at a new venue thanks to Bootle Scramble Club and the great work of the club and the Gowan family. A brilliant

day with superb weather, full entry, great location and sections boded well for the series.

Legendary photographer Eric Kitchen was there to capture Northern Ireland's Alex Lennox taking one of the expert wins; Wobbler, aka Paul Norman, on his RTXhad a great ride as well.

North Easterner Colin Ward returned and multi champ Steve Bird changed to 'Iwinshocks to give Richard Allen a run for his money. Dave Wardell was going for his fourth championship in the clubman class, all in different classes.

Unfortunately the lockdown came a week later. The series is on hold keep checking www.nationaltwin shocktrials championship.co. uk for information on when the series might resume.

Westmorland Revival MX With a date set in August, when it is hoped restrictions will have been eased, the Westmorland Revival Scramble at the showground venue they've used for a few years could be a two-day event.

If it is, then the scrambles and MX world will be more than delighted, as by then racers will be desperate for some form of competition.

Westmorland club are well aware all depends on how the coronavirus pandemic has loosened its grip on the nation and what direction the Government will go in regarding relaxing the controls.

So, hopefully August 8/9 will see a resumption of scrambles action in Cumbria. Look out for information on the club's website www.

If Westmorland's event westmorlandmotorclub.com or email ..Stev.e..D.ent...an ..st.ev.e@:w:mcevents ...ca.u.~------------------------

goes ahead it is hoped to be drier than this.

Margate Malle Mile Beach Race Introducing the first Classic & Custom Motorcycle Beach Sprint-race in Great Britain.

An array of wild motorcycles will race head-to-head in a unique beach race in beautiful Margate on September 26, 2020. An inappropriate motorcycle race like no other!

8 I Dirt news

After a year of planning meetings, beach reviews, beach inspections, beach measurements, sand analysis, ice cream testing, environmental planning, more meetings and tidal predictions, organisers can finally announce for the

first time ever, they've been invited to take over the beautiful Margate Beach for one day only!

More information as the day comes closer but in the meantime go to www.mallelondon.com/ beach-race/

Doing it for Dom On a brighter front, the fundraising for Teenage Cancer Trust has been amazing, the website gives you a full breakdown of the donations, including money from various clubs and £1000 from Cumberland County when their event was cancelled and most riders decided to donate their entry fees to the charity. £9113.46 has currently been raised including £4404.40 from calendar sales, everything has gone to Mark Kemp's Do It for Dom's Teenage Cancer Trust fund.

The organisers have a few calendars left which Caroline Fleckney and Freddi Minshall are sending out to interested parties for a donation to the fund. www.nationaltwinshock trialschampionship. co.uk for calendar info.

Tough times

Whatyou would have been racingon if Drumlanrighadn't been cancelled.

It seems like an awfully long time ago since the last edition of the magazine in February, which we were all reading as everyone gathered at the International Centre at Telford for the Hagon sponsored ClassicDirt Bike Show. Spirits were so high, as all the stands were mobbed with enthusiastic riders, club members and the general public.

Nobody could have envisaged the devastation a month later as Covid-19 hit these shores, with infections and sadly loss oflife, and the inevitable lockdown of the country with bans on mass gatherings.

The first event to suffer with cancellation was the fourth edition of the Drumlanrig Festival of Motorsport run by the Galloway MCC, due to be held in June, as the estate

halted all events until at least July.

The good news is that the club have booked the same weekend in June 2021 and all the 280-rider entry has now been refunded.

The club had massive plans for this event, having secured extra funding to make it like a mini Goodwood event.

Then as the ACU, SACU and the AMCAhalted permits for all events, the Toughsheet National Twinshock Championships also lost their first three rounds of the popular series, at Polesworth, The Grange and Bevercotes.

Whilst the rest of the seven round series is also under review, it is debatable as to whether any of the rounds will be run unless a vaccine emerges, or there is a relaxing of the current rules. Should none of the

events be run in 2020, the committee has decided that the registrations will either be rolled over to 2021, or you can request a refund by messaging Geoff Shuttleworth.

Cumbria Twinshock are also worried that the King of the Castle at Farleigh, in July, may become another victim of the outbreak, although they have said that a later date may be an option should there be a need to cancel in July.

One thing is for certain, should we ever get the go ahead to resume our hobby in 2020, my guess is that there will be an awful lot of riders wanting to take advantage. And when we do get going again, please make sure that you support all the businesses that have supported us over the years, as they will need all the help they can get to keep afloat.

MSM's timely reminder As the effects of the pandemic hit motorcycle sport and events are cancelled, postponed or just 'off, there is a timely warning from MSM Insurance about another equally virulent pandemic - thievery.

While us ordinary, honest,

law-abiding people try to do our best to cope with the new normal it seems the low-life scum of society aren't being furloughed but are using these troubled times to continue their despicable activities. MSM say keep up your insurance

policies even if you're not riding your motorcycles in events and if you need to tweak your cover or increase it then try MSM at www.msminsurance. co.uk or email msm@ msminsurance.co.uk or see their advert in this issue.

Iconic bikes

A little something for interaction on our Classic Dirt Bikewebsite is the Iconic Bikes series. A little bit of fun for us in this time of uncertainty, it's not a competition, there's no prizes, just a bit of chat about what you think is an iconic dirt bike.

The page on the site is www. classicdirtbike.co.uk/icon/ and the guidelines are fairly relaxed and amount to a bike which fits in with the era of the magazine - mid-1950s to late 80s - and it has to be a dirt bike.

This covers naturally enough trials, scrambles/MX, enduro in solo and sidecar form and could include grasstrack and speedway machines too. It can be a production bike or a works bike. We expect you to say a few words about your choice of bike, why you say it's an icon basically - we'd like a pie or at least a suggestion of where we could find one in the archive.

Bultaco nostalgia

Bultacoseverywhereand hopefullyin Cumbria.

A glimmer of hope in this trying and troublesome time, Westmorland MC are hoping their popular Bultaco Revival event - which was pushed back to July 25 from its regular June date - may well be able to go ahead. If the current restrictions are eased and some form of gathering is possible then the club have the date and venue available to them. There is talk of making the trial a two-day gathering if it does go ahead. As we announced last issue John Lampkin is to be the guest of honour should the event happen. We understand Mike Rapley will be the point of contact for entries ... we further understand he will be advised he's the point of contact before this magazine is printed! Contact Mike on rapley47@outlook.com SUMMER

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0

f the things I remember from my early years in youth trials was big British bikes towering over me as I sat in queues awaiting my tum to tackle sections - their riders looking down at me as my dad took last minute opportunities to suggest where the front end of my little TY80 should steer.

More than one rider, easing a throttle and reducing the deafening four-stroke noise to a twelve-year-old's ears, said: "you'll be okay sunshine, just do as your dad tells you." I never paid enough attention to such advice but I did pay attention to the handlebars on those big bikes. They had more levers than mine and I could never understand why? What did these extra levers do? Why did my bike not have them?

The fascination with these machines had started but it would be another 32 years before I would tackle a section on such machines.

Sporting a flat cap adorned with many a Britishbike pin-badge, an enthusiastic TALMAGspectator pointed his cane at my Ariel "What year is it?" More

2019 than 1957 was my reply. There followed the almost standard questions of "go alright does it?", "how long did it take you to build?" and "how much did it cost?" Just before the observer flagged me into the section I shouted my replies of "yes it does, sir; five years and let's put it this way, I could buy a brand-new titanium Vertigo and still have a bag of cash in my pocket!"

On this, the bike's third outing, I would have to settle for third in the over 300cc class, as with several clean rides, the winner would be decided on the special speed test. I had no idea how fast this bike would go, let alone own any respectable personal motocross background!

Without doubt, at events like the Scottish, the big bikes are the ones the crowds line sections to see.

Always there is a cheer for any rider clean on the famous Pipeline section, but when a big bike comes through the cheer has something special about it. This alone spurred me on to forsake the little Tiger Cub I'd spent a decade riding, and join those bigger bikes in the pre unit class.

My route to a big bike began in the summer of 2012

â–ş

Pretty much every Arielused in Pre-65these days is based more on the ideals and principlesshown by Sammy Milleras he developed GOVl32. Don't forget as he was developing this machine he was still a factory employee with other duties within the company. Add in he was riding every weekend up and down the country - no easy task in the days when the motorway system was not as extensive as it is now - and the Arielneeded regular servicing as well as developing, which puts another perspective on his achievements. In COBissue 8 we looked at GOVl32 in our 'Handbuilt for a Master' series.

when motorcycling mourned the loss of Italian Giulio Mauri, a respected photojournalist and FIM official.

His superb photography archive was highly regarded, as was his collection of memorabilia and machinery which included domestic and world championship winning bikes and an HTS Ariel which would, by the end of 2013 make its way to a workshop in Northamptonshire.

It had always been my intention to ride a big machine I had built rather than one which proved I could hand over a large sum of money. Mauri's bike was built to classic 1980s ideals, long stroke engine, in an early John Bartram 'Miller' style frame, with then current weight-saving opportunities everywhere it still weighed 130.5kg/2881b.While there were a lot of things on it I needed, on the flip side the thinking has moved on a lot since its original build nearly 40 years ago. The machine I had come to own was not the machine I was going to ride Pipeline on.

A purist would argue against the modernisation of a bike, even within keeping but I would argue while many competitive Pre-65 machines of today are far from original, so are the sections. Several fellow riders advised me to simply keep and ride the machine as it was, "you're opening a can of worms if you choose to rebuild it" was a common phrase. With a new generation of riders coming through the last decade alone the severity of sections has changed. If I had kept the machine as it was, I'd have never ridden it and I wanted a bike I could throw at anything, come what may!

My Scottish riding partner and close neighbour, Richard Allen, acquired two of the last Ariel frames Paul Jackson would make, one of which now became the foundation of this project. Four years then passed before I had finally saved enough to make a realistic start on the project though during this time I had the bike registered with the help of the Ariel club of Great Britain. If I wanted to compete in the NBBCseries,

the Manx and the Pre-65 Scottish in Kinlochleven it would need to be road registered, a process which took a considerable time with official inspections and paperwork.

To be anywhere near competitive I knew the bike had to have a short stroke conversion, making the engine a lot more responsive and more suited to modem day Pre-65 'expert' sections. Long before I had even owned one I had photographed many Ariels and questioned the knowledge of those who owned and built them.

One Lancashire man I had met over a pint in Kinlochleven's Highland Getaway was Carl Winstanley who had given me his details to contact when the time came to it. Carl's work on engines, particularly trials Ariels, is reputable and is to be found behind many of today's championship winning machines. Carl would help with the conversion but I would need to source a Yamaha XT 350 piston and a 350 Ariel crank assembly in perfect condition, neither of which are available off the shelfl The project came to a standstill, for at least another year until I located what I needed.

Although the Ariel was the lightest of the big bikes the story of how Sammy Miller ingeniously cut the weight even further off his HTS GOV 132 after the factory dropped the range is well and truly embedded into the history of the sport. By May of 2018 I was ready to Millerise the Milan bike and the deconstruction of the original began.

Carl began engine reconstruction by breaking everything down, stripping off the original primary chain casing and dismantling the clutch assemblywhich would be replaced with a belt driven diaphragm version supplied by Peter Kirby. The new clutch would fit into one of John Bartram's CNC machined casings made of a 5000 series aluminium alloy with magnesium, the highest strength nontreatable aluminium and simply finished off to absolute perfection. The casing was designed to fit one of John's frames and to make it work with the

1:Thecompleted engine rebuildfor the new machine.

2: LancastrianCarl Winstanleywith the rebuiltengine January 2019.

3: The originalbike

as it was under the ownershipof Giulio Mauri.

4: The buildtaking shape in April2019 after PaulJacksonhad builtthe runninggear.

5: TonyHoltmodels the extended James tank designed for the new build.

6: ByAugustof 2019 the bikestarted to take shape 7: A new Morgooil pump was fitted to the new bike.

8: Gearboxadjustment built into the new machine.

Jackson frame Carl had to do some clever engineering and build the mounts to suit not only the clutch but the engine and the frame. The gearing, an original road bike cluster, was replaced with an extra wide ratio set purchased from Mick Ash. "I've only three sets left and one has been sold, if you want them you will have to be fast" said Mick.

New valves and guides went in the head and bearings, bushes and seals were switched for new throughout. To ensure good oil circulation a new Morgo pump replaced the original Ariel one. As with Miller's bike the engine oil is carried in the frame and feeds for the rocker shafts were redrilled and switched to the primary side and fitted with clear tubing so the oil being fed in could be seen to circulate.

Gearbox adjustment was reconfigured to allow fine adjustment as opposed to the vicious adjustment

ARIEL SHORT STROKE HTS VITAL STATISTICS Rolling chassis:

PaulJackson frame (oil-in-frame) BultacoBetor/Norton Roadholderforks ■ MaxHeyshubs ■ Stainlessspokes ■ Alloyaxles ■ Rockshocks ■ Holtworksalloytank with aircraftfuel filler ■ TitaniumApicofootpegs ■ MaxHeysCNCyokes ■ Renthal FAT Bars ■ Genuine forged Domino levers ■

■

Engine/Gearbox:

Builtby CarlWinstanleyJan 2019.

MickDickinsonAlialloy short stroke barrel ■ Aluminiumcylinder head ■ Genuine Yamahapiston (XT350) ■ Aluminumpremier Amalcarb ■ LucasCompetition Wader magneto ■ BurmanGBGearbox ■ Extrawide ratio MickAshtrials gears ■ Morgo high flow plunger oil pump ■ PKdiaphragm belt driven clutch ■ BartramCNCmachined primary clutch casing ■ ■

SUMMER 2020

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