Jumping out of 3rd gear

[iandollysprint]

My Sprint keeps jumping out of 3rd gear on overun.<br>
<br>
Also 2nd is more difficult to engage than any other gear and 3rd to 4th crunches if I take it fairly quickly. Looking to have an exchange gearbox unit from TD Fitchett (£175 inc VAT) which seems reasonable.<br>
<br>
Will this solve my jumoing out of 3rd gear though? TD Fitchett commented that it may be the selector mechanism which is not included in the gearbox rebuild.<br>
Thanks<br>
<br>
Ian

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[george]

likley to be internal rather than selectors<br>
the 3/4 syncro hub and baulk rings is the suspect area your looking at as it's coming out on over run

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[slant04]

Internal - detent springs on selecector either way best rebuild it!

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[Jod Clark]

I'd stay away from those re-CON boxes, I know the bloke that builds them. Mark-up on his supplied price is in the order of 110 quids, leaving not much left for doing the job right <!--EZCODE EMOTICON START :( --><img src=http://www.ezboard.com/images/emoticons/frown.gif ALT=":("><!--EZCODE EMOTICON END--> <br>
<br>
Jod

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[iandollysprint]

Jod<br>
<br>
Thanks for the advice. I really am considering having mine rebuilt as it only has 62k miles on it and I just don't know what I would get from a recon box. Any suggestions on who could rebuild my sprint box for me?<br>
I know it may cost more than the 175 quoted by Fitchetts but I want this job doing correctly.<br>
<br>
Ian

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[Sprint36]

Mike Papworth does box rebuilds, but I can't comment on the quality as I've never had one done. His details are on the suppliers section of the website. Also Carl Shakespeare mentioned having a box rebuilt. Carl are you listening?<br>
<br>
David

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[Mark Larmour]

Mainshaft circlip, which retains the 2nd/3rd gears has either broken or worn. If there is excessive movement in these gears, the gearbox will ALWAYS jump out of 3rd gear.

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[slant04]

There an easy self rebuild with a bit of patience. I've a spare dummy layshaft if you feel like a go

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[alun n]

Papworth used to do the Canley 'boxes. Apparently knows his stuff and could probably do you an exchange off the shelf.<br>
<br>


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[iandollysprint]

Thanks to you all for the advice.<br>
<br>
How do I contact Papworth?<br>
<br>
Ian

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