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Weismann Transmissions Does anyone have any pictures showing the insides of the old FTA? I’d like to see the gears. Carroll Smith mentioned in one of his books that the basic differences between the two brands [Hewland and Weismann] are that Weismann does all of his shifting on the intermediate...

When dismantling or assembling a street gearbox, why is it that pressing and pulling tools are required to remove/install gear ratios whereas with a race gearbox the gear ratios can be handled without any tools? Please enlighten me.

Pull- or push-type? For street and occasional track application, which is the better clutch? Look at Porsche - they use pull-type for production cars and push-type for racing. Why's that? Does push-type have a heavier and longer pedal and if so, would a concentric clutch slave help to overcome...

What is the distance from the front of transmission to centre of driveaxles? Please tell me both short and long bellhousing versions respectively. Thanks. (I did a search but to no avail.)

I recently found out that a gearbox can be lowered or raised relative to the engine by using a drop gear in the bellhousing. Cooper Climax used this in the early '60s. Do you have any experiences with that and if so, are they ok/reliable to use? Any disadvantages? Thanks.

I'm looking for a book about how to design a gearbox. I did a quick Google search and this was the only one that came up: Amazon.com: Manual Gearbox Design (9780750604178): Stokes: Books Unfortunately, that book doesn't have any customer reviews so I'm not sure whether it'd be a good buy and...

Here are some of the gear rod movement distances I recently found out from doing a little web surfing. Gear rod movement distance either side of neutral for forward gears: Hewland LD200 - 0.260" (6.6mm) FT200/FGC - 0.225" (5.7mm) DG300/DGB - 0.225" (5.7mm) LG500 - 0.275" (7.0mm) Porsche...

Are there any gear manufacturers that makes non-syncromesh gear sets but with helical gear type rather than the usual spur type? (for quieter running) Thanks.

Hello, Exactly what are differences between them two? The info I got so far are as follows, but still need to know the remaining (in red): ZF Supplied by: RBT Manufactured by: ? Made in: ? Shaft centres: 79mm Crown wheel diameter: ? Bevel or Hypoid: ? Hypoid offset: ? Shift forks on input or...

I have a factory workshop manual for G50-series 911's but, regarding transmission, its technical data unfortunately only reveals information of the smaller crown wheel sized G50s (7.5") of which the hypoid is 16mm, without mentioning anything about Turbo sized ones (9"). So, does anyone know the...

Which has a better shifting mechanism? Thanks.

Look at this picture of a G50. It looks like there's plenty of room to flip the r+p to the other side, so I don't understand why. Please enlighten me.

Hello Is the distance between shaft centres of the type 930 transaxle the same as the type 915 one (76mm)? If not, what's the distance? Thanks

Are there any differences between DG300, DGB, and DGC? If so, what are they? p.s. The current Hewland website only lists the DG300 so I have no idea. Thanks in advance.

Hello. I'd like to hear your opinions about the Quaife QTEK 6-speed. The pic below shows that, unlike Porsche gearboxes, the side plate is on the left side so the box doesn't have to be inverted for mid-engined configuration. Can be had in either H gate or sequential. Price 7,500 GBP for H gate...