General Discussion Triathlon Talk » Stem raising question What's the max limit? Rss Feed  
Moderators: k9car363, alicefoeller Reply
2016-11-24 8:05 PM


18

Subject: Stem raising question What's the max limit?
Hello all!

I own a Cervelo P3 bike and I am playing with my fit. Right now I have quiet a bit of weight to lose so my stem is raised up with spacers. How much can I safely raise the stem without compromising the integrity of the bike or fork? If I raise it 3 cm - 4 cm will this this be able to be tolerated? Alternatively, I can raise my aero bars with spacers but I rather raise the stem.

I'm using a profile design stem that is 4 CM in length. So from the fork it would be 4 CM (stem length) + 3 CM spacers = 7 CM.

Edited by dnewman84 2016-11-24 8:06 PM


2016-11-27 7:48 PM
in reply to: dnewman84

User image

Expert
2373
20001001001002525
Floriduh
Subject: RE: Stem raising question What's the max limit?
It depends on your fork. If the steerer tube is aluminum then I think there is no real limit on the stem height. There is a limit (I don't know what it is) if the steerer is carbon. You can get a number of quality stems in a 30 degree rise.
2016-11-28 8:16 AM
in reply to: dnewman84

User image

Pro
5892
5000500100100100252525
, New Hampshire
Subject: RE: Stem raising question What's the max limit?
You're much better off raising the elbow pads/extensions with spacers than raising the stem. Just more aerodynamic.
2016-11-28 8:25 AM
in reply to: #5205831


18

Subject: RE: Stem raising question What's the max limit?
Thanks for the reply.

I didn't want to cut my stem down so I would have to adjust spacers so they would sit up top.

As for raising armpads, I was thinking this would be less preferred due to having to add some weight for the spacers opposed to just raising on the stem with the wxisting hardware. Can you help me understand why is it for aero to raise on the armpads opposed to stem?
2016-11-28 4:14 PM
in reply to: dnewman84

User image

Pro
5892
5000500100100100252525
, New Hampshire
Subject: RE: Stem raising question What's the max limit?
Raising the stem increases the frontal area, where has adding spacers under the elbow pads has a very small impact on frontal area. From a bike balance point of view, it is also desirable to have the aero bars lower (think about when you ride a road bike, you are more stable in the drops as that lowers your center of gravity) and then adjust the extensions to the right height.

A stem with a high rise will also shorten the reach.

In general, you want to use as few spacers under the stem as possible as that will give you the best front end stability.
New Thread
General Discussion Triathlon Talk » Stem raising question What's the max limit? Rss Feed  
RELATED POSTS

10-year-old boy's distance running feats raise questions Pages: 1 2

Started by trishie
Views: 3396 Posts: 49

2014-06-17 8:30 AM Fred D

Zen Run Tonight... raises some questions

Started by 08M3Sedanski
Views: 874 Posts: 4

2011-05-22 10:52 PM Pacific John

Raising Money for a cause question

Started by trikevin
Views: 798 Posts: 3

2011-04-26 8:46 PM Cavemann

Cervelo dual stem question

Started by KenyonTri
Views: 514 Posts: 2

2007-06-20 2:16 PM turqy

Stem Length Question/Bike Fit

Started by PTG0613
Views: 828 Posts: 2

2006-04-18 11:49 AM nmendoza
RELATED ARTICLES
date : September 30, 2016
author : Team BT
comments : 0
Subscribe to your favorite forums and threads!
 
date : June 21, 2006
author : Team BT
comments : 0
Standing Calf Raises strength exercise instruction with picture and video.
date : February 28, 2005
author : Don Magie
comments : 0
Whether your bike is new, new to you, or you have not been on the bike for a long time, you really should spend some time thinking about how your bike fits you.