Hi, difficult to shift gear under track conditions!

Road-race engines and ancillaries - general discussion
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torkil
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Hi, difficult to shift gear under track conditions!

Post by torkil » September 13th, 2013, 11:07 am

Hi on my trackday yesterday i had a little problem ,espessely whenn i rew out 2nd and change over to 3 rd ,it feels like the clutch want free out ,and i have to force the lever slowly over,to 3rd

Whenn i use the car in normal road conditions there is no problem ,
There is no air in the hydralic clutch system ,
My thinking about this problem is!
1 clutchplate has problem to free under high revs, Perhaps related to viberations!


The gearbox in my X 1/9 is a standard Strada 130 ZF type,
Any hints Reg Ove Thorkildsen Norway
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Guy Croft
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Re: Hi, difficult to shift gear under track conditions!

Post by Guy Croft » September 13th, 2013, 11:25 am

maybe the clutch is over-stroking - pushing too far


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Biancorally
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Re: Hi, difficult to shift gear under track conditions!

Post by Biancorally » September 13th, 2013, 7:41 pm

Hi Ove,
is that a stock Strada 130TC ZF synchronized gearbox?

Is it hard to get out from the 2nd gear?

Regards

Daniel
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torkil
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Re: Hi, difficult to shift gear under track conditions!

Post by torkil » September 15th, 2013, 7:18 pm

Yes standard synchronized box , 2nd to 3rd somtimes 3 to 4 also . , It heawy to shift ,have to dag the lever slowly over , .


Here you can see for your self http://www.youtube.com/watch?v=PNAvQeVckGc
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Biancorally
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Re: Hi, difficult to shift gear under track conditions!

Post by Biancorally » September 15th, 2013, 10:36 pm

Hi,
can you post a picture with the linkage up to the gearbox?

Regards

Daniel
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Urbancamo
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Re: Hi, difficult to shift gear under track conditions!

Post by Urbancamo » September 16th, 2013, 9:58 am

For me it looks like some kind of a gearshifter/linkage issue rather than anything else, but hard to say just looking at the video.
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torkil
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Re: Hi, difficult to shift gear under track conditions!

Post by torkil » September 18th, 2013, 6:58 pm

There is no linkages in this system at all this is fitted just like a frontwheel driven car F instance Uno Turbo , But this package is fittet at rear , so there is only the original X1/9 rod who travels to the rear end off the car an under gearbox bolted diretly to the gear gearchange rod without any rubber , Wery accurate shift , whenn not getting hard to shift ,
Motor monts are wery stable and dont flex mutch, OVE
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timinator
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Re: Hi, difficult to shift gear under track conditions!

Post by timinator » September 24th, 2013, 1:44 pm

Hi Ove, I have had this problem with transmissions that were not serviced often. The cure is to drain out the gear oil and refill with ATF and run it for approx. 1500 km to clean out the sludge. Then refill with what is called for by the manufacture.

Abarthnorway - Remi L
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Re: Hi, difficult to shift gear under track conditions!

Post by Abarthnorway - Remi L » October 11th, 2013, 11:04 pm

timinator wrote:Hi Ove, I have had this problem with transmissions that were not serviced often. The cure is to drain out the gear oil and refill with ATF and run it for approx. 1500 km to clean out the sludge. Then refill with what is called for by the manufacture.
hmmm - I am not sure this is the problem in this case. The 130 TC box has some "delay" and sensitivity regarding the 2nd gear I have noticed, although not the way Ove is describing. I certainly do not expect old oil to be the problem in this case.
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