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Reed valves
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Reed valves TS1 & Imola
If you are looking for the highest horse power readings you will find your luck with piston ported engines rather than with reed induction engines. The simple reason is that there are no reeds obstructing the gas flow. To gain the advantages of power the inlet has to be radically enlarged. Therfore the peak power will be increased but the power band will be cut short. Those type of engines are hardly rideable on the road. In contrast to the reed induction system which gives a better spread of power. The fuel/air ratio supply is controlled by those little reed petals. If there is a negative pressure in the crankshaft casing the plates are opened and the fuel can pass by. The main advantage of the reed valve induction is the possibilty of larger inlet areas without the loss of bottom end grunt and the additional scavenging of boost ports. These advantages result in a wider power band and hence better driveability. Beside the standard TS 1 reeds there have several others found their way into the TS1. If any other reeds are used you can be sure that you also have to use the Packing Plate under the reeds. Otherwise you risk the piston touching the petals and the restriction of parts of the boost port by the reed valve. With the use of different reeds you can find the one or the other horsepower over the complete rev-range. Maybe that sounds not too much, but it makes a big difference on the road. The Yamaha TZR reeds have a perfect surface area for carbs from 32 mm onwards. The plates are made of glass-fibre reinforced plastics and provide a very good response to changes of the negative pressure. The reeds are higher. The inlet area has to be radically enlarged and possibly even welded to fit those reeds. The fitting of the reeds does definitely require a Packing Plate and it should be double checked that the reed do not touch the piston.
bgm RD
69.-
In comparsion to the TZR reeds the Tassinari are very handy. Even without the Packing Plate the boost port is not obstructed by the reeds. The Tassinari reeds work without reed stops which is another great feature as there is one part missing that can not obstruct the gas flow in the Boost Port. The cylinder does not have to be grinded to get the reeds fitted, but manifold and reeds have to matched. For very frequent Rally Goers or everyone who is lazy on the spanner the Tassinari shouldn’t be the first choice because it is quite maintenance intensive. A classic for aftermarket TS 1 reeds are the Yamaha RD 350 reeds. They deliver great power with very good durability. They have proved theirselfs over the years in many of our TS 1 engines. They are so good that we offer bgm Type RD reeds. These reed valves are manufactured in the RD style but is improved in significant points. The reed plates are not as stiff and are respond very well in our tests. Even at highest rpms there was no wobbling of the reed plates.
Reed valves
bgm Typ NSR bgm Typ RD Imola AF TS1 TZR 125-250 (6 valves) V-Force Tassinari
Reed Plates
AF TS1 Gran Turismo
Reed Plate Carbon Fibre
0,30mm Carbon 0,35mm Carbon
(2 Plates 110x110mm) (2 Plates 110x110mm)
ates Carbon Pl
90
19.
BGM2551 BGM2550 8000034 8000050 1120051 WS5205
49,00 € 69,00 € 59,90 € 69,00 € 89,00 € 169,90 €
8000051 8007093
39,00 € 19,00 €
P2130600 P2130601
19,90 € 19,90 €
AF TS1
79.-
ZR Yamaha T
79.-
bgm NSR
49.-