Slipping gears = toptube/ nadular contact

homers_double · June 2007

[V]

Every now and again the gears just slip, I cant predict when or why and when I look back, its engaged again.

Changed the cassette, chain and 2 of the chain rings a few weeks ago so it cant be those skipping.

New freehub was fitted about 8 or 9 months ago.

Ideas?

<center>When God created mountains he meant them for climbing, not to be used as glorified toboggan runs.</center>
<center> Riding for Team Cake in 2007</center>

whyamihere · June 2007

Any problems shifting? Slow shifts or rubbing on a different cog? Does it happen in any specific gear, or all of them?

homers_double · June 2007

No, shifts smooth as 99% of the drivetrain is new.

Cant really say if it happens in a particular gear although I have an incling it happens when I'm on the granny ring (maybe).

<center>When God created mountains he meant them for climbing, not to be used as glorified toboggan runs.</center>
<center> Riding for Team Cake in 2007</center>

nicklouse · June 2007

swop out the freehub again.

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whyamihere · June 2007

Does it mostly happen when you're pushing hard or when you're pedalling easily, or both?

homers_double · June 2007

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by nicklouse

swop out the freehub again.
<hr height="1" noshade id="quote"></blockquote id="quote">

That was my thought, the downside being the cones on the hubs, I hate them with a passion [V]

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by whyamihere

Does it mostly happen when you're pushing hard or when you're pedalling easily, or both?
<hr height="1" noshade id="quote"></blockquote id="quote">

Both, when I push off it goes sometimes and also when I'm pushing hard up a climb. But then again I've been standing up hard on some climbs lately and its been fine.

I'm thinking one of the engagement thingies in the freehub is shagged.

<center>When God created mountains he meant them for climbing, not to be used as glorified toboggan runs.</center>
<center> Riding for Team Cake in 2007</center>

Anonymous · June 2007

doublecheck your rear derailleur alignment first, much easier to sort out than changing the freehub.

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homers_double · June 2007

It aint that.

<center>When God created mountains he meant them for climbing, not to be used as glorified toboggan runs.</center>
<center> Riding for Team Cake in 2007</center>

whyamihere · June 2007

Does sound like freehub unfortunately. Had it just been on light pedalling, I was thinking maybe a stiff link. but that's nigh on impossible if it's when you're pushing hard.

homers_double · June 2007

Its a proper slip, almost half a revolution or until I hit the frame.

<center>When God created mountains he meant them for climbing, not to be used as glorified toboggan runs.</center>
<center> Riding for Team Cake in 2007</center>

whyamihere · June 2007

Freehub then I'm afraid.

homers_double · June 2007

I'll get the shop to fit it this time, I cant be fagged with the hubs again.

Are hopes etc fitted with sealed bearings? and do you need to remove them to get at freehubs etc? ie are they easier to maintain?

<center>When God created mountains he meant them for climbing, not to be used as glorified toboggan runs.</center>
<center> Riding for Team Cake in 2007</center>

whyamihere · June 2007

Hopes are fitted with sealed bearings. They have a couple in the freehub, and to remove the freehub, you pull it off the axle, bearings and all, as there is only an o-ring and the friction of the bearings keeping it in place. It has springs and pawls which go into a toothed ring in the main body of the hub, these are pretty much the only difficult bit in the service, as you have to get all 3 pawls in at the same time, compressing the springs, then slide it into the hub. Tricky. Much less work than C&C though.

ride_whenever · June 2007

Funny, when mine came off i had no trouble putting it back on again.

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whyamihere · June 2007

OK, more fiddly than difficult...

Slipping gears = toptube/ nadular contact

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