6 speed problem

[robmar]

Yesterday at castle coombe my car developed a problem where it is very very hard to get it into and out of 6th gear. It is like I am having to force it aginst something, which has a little give, and you have to really push/pull hard. There is no snick in at all sad.gif. Any ideas as to the cause? gear selector perhaps?

 

All other gears are fine just 6th sad.gif

 

the car is still relatively new having only covered 3000 miles

 

rob

[Mike Bees]

I had a similar problem with mine when it was fairly new, after some hardish running in 6th (like a stretch of motorway, or a few laps of a fast circuit) it was *very* difficult to get out of 6th. Once it had cooled down again it was fine. It went back to Caterham who sorted it out.

 

Mike

 

Edited by - Mike Bees on 10 Apr 2002 17:01:48

[robmar]

I guess from your vagueness you do not know what the problem actually was, it could be the same thing as coombe had some high revs in 6th for a period (I got my 3rd shift light on just before quarry which is set to 6,600)

 

mine is still difficult to engage/disengage when cold as well tho sad.gif

 

rob

[EFA]

My six speeder would never engage 2nd on a downshift when it was really cold.

 

Got rid of the Shell Spirax oil and put the Ford stuff in and all was then fine.

 

Fat Arn

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[Mike Bees]

Summat to do with the detent plunger binding (gearbox expert I am not).

 

Mine doesn't like going up or down into 2nd when it's cold, irrespective of what type of oil I use. I was under the impression that TADTS.

 

Mike

[Rob Walker]

Rob,

 

I presume the car is still under the 12 warrenty, perhaps this not the place to advertise how the car has been used.

[old captain slow]

My 6 speed would not engage 2nd on upshift when cold even after 12000 miles. After 25000 all is now ok, so assume only tight from new?

 

 

[Mick Day]

I've noticed this with mine once it was rebuilt by R & R Transmissions in 1998 (13000 miles later). Enthuseastic driving in France induces it. Couldn't work out what the problem was until I started analysing how I changed gear. Usually in 6th one has been cruising for a while & the brain has defaulted to a neutral state. Make sure the clutch goes flat to the floor & this seems to sort the problem. But as Mike Bees says it may have more to do with the detent plunger binding (gearbox expert I also am not) after a prolonged enthuseastic spell in 6th.

 

Mick

[CHRIS CLARK]

For those interested, there is a good Caterham parts book with brilliant 'exploded' views of the box + internals that shows all you want/need to see. I believe Phil Stewart (Road & Race Transmissions) was involved and it shows. Real professional piece of work (unlike the std car parts cat.!). All parts have a number and decent listing etc

 

Goes under the title of "Six Speed Gearbox Assembly" (original)