Stem shortening - advice needed

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pedalbasher
Posts: 123
Joined: Wed Oct 02, 2013 10:17 am

Stem shortening - advice needed

Postby pedalbasher » Wed Oct 02, 2013 10:25 am

I have a 100mm Ritchey WCS stem on my size M Canyon Ultimate CF SLX.

The current reach is very slightly too far and I'd like to shorten the stem by a couple of cm.

Canyon are selling 70mm, 80mm and 90mm stems. I'm tempted by the 70mm, which would allow me to push the saddle back 10mm or so (it is currently a touch too far forward) and still achieve a 20mm reduction in the reach.

Is there any problem installing a shorter stem in this way? I'm concerned the handling of the bike may be affected detrimentally i.e. will it become too "twitchy"?

Any experience/advice appreciated.

Cheers

diamonddog
Posts: 2238
Joined: Tue Jun 18, 2013 10:48 am

Re: Stem shortening - advice needed

Postby diamonddog » Wed Oct 02, 2013 10:42 am

Shorter the stem twitchier the bike. :)

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d10brp
Posts: 63
Joined: Wed Aug 01, 2012 12:36 pm

Re: Stem shortening - advice needed

Postby d10brp » Wed Oct 02, 2013 11:02 am

Just moved from 110 to 80 and find the steering absolutely fine so far. No twitchyness
Scott CR1 Pro
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pedalbasher
Posts: 123
Joined: Wed Oct 02, 2013 10:17 am

Re: Stem shortening - advice needed

Postby pedalbasher » Wed Oct 02, 2013 11:13 am

Thanks. Any reason why 70mm would be too short? It sounds very short to me - I've only used 100/110mm stems before. But 70mm would, I think, give me the flexibility to shift my saddle back to the correct position and still leave a shorter reach. So unless there's a good reason why 70 is beyond the limit, I'll go for that...

keef66
Posts: 8712
Joined: Tue Apr 29, 2008 09:46 am

Re: Stem shortening - advice needed

Postby keef66 » Wed Oct 02, 2013 11:37 am

In a traditional, basic bike fit they generally adjust saddle height first, then saddle setback, and then go on to reach.

I came from riding a mountain bike, so to me the 90mm stem my roadie was fitted with seemed quite slow in steering terms.

Once you've sorted the saddle, perhaps you could achieve a confortable reach by flipping your current stem?

pirnie
Posts: 147
Joined: Wed Apr 10, 2013 11:17 am

Re: Stem shortening - advice needed

Postby pirnie » Wed Oct 02, 2013 13:21 pm

Having ridden my winter bike with the original stem, which was 130 mm and decreased the stem length to 100 mm and finally now to 70 mm (yes I know I should have bought a smaller frame!) I honestly haven't noticed much difference in the handling. I can see the logic saying a short stem should be twitchier, but if anything the 120 mm stem on my summer bike feels more responsive than the 70 mm one on my winter bike. Just my experience.

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g00se
Posts: 2097
Joined: Fri Aug 07, 2009 09:53 am

Re: Stem shortening - advice needed

Postby g00se » Wed Oct 02, 2013 15:16 pm

Again - didn't notice much going from 110 to 90. Another thing to consider is if it'll be more appropriate to change to shorter reach bars - rather than the stem.

styxd
Posts: 3114
Joined: Fri Oct 29, 2004 00:57 am

Re: Stem shortening - advice needed

Postby styxd » Wed Oct 02, 2013 15:38 pm

Buy a bike that's the corect size for you? A 70mm stem on a road bike is fairly mad, I cant imagine it'd handle nicely on high speed downhills or climbing out of the saddle.


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