Stem Length
#1
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Stem Length
Hi,
First post on the forum!
I have a Cannondale Supersix Evo. I am just over 6 feet tall and have a size 58 frame. I have my seat slid forward and have put extra spacers under my bars, but I still feel like I am reaching for the hoods.
I am thinking of swapping out the stock 110mm stem for a 90mm to bring the bars a little closer. Do you think that this would help, without making the steering too twitchy?
First post on the forum!
I have a Cannondale Supersix Evo. I am just over 6 feet tall and have a size 58 frame. I have my seat slid forward and have put extra spacers under my bars, but I still feel like I am reaching for the hoods.
I am thinking of swapping out the stock 110mm stem for a 90mm to bring the bars a little closer. Do you think that this would help, without making the steering too twitchy?
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Seat position and reach are not related. Get you saddle position set FIRST, then adjust reach. Stem and bars will both effect reach.
BTW what size frame are you on? Cannondale seems to run large.
BTW what size frame are you on? Cannondale seems to run large.
#3
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The stack and reach are only 6mm different between the 56 and 58 cm frames. At your height 58 would be the correct size so it should be fine unless you have unusual leg/torso proportions. What's your inseam?
99Klein is correct that you should first get your saddle position so that your legs are in the correct position in relation to the pedals. Then evaluate reach.
You can swap the stem first. The bars that come stock on the bike have a 76mm reach and 126mm drop which is already a compact bar. After swapping the stem, if you want further less reach look at Zipp, whose compact/ergo bars have 70mm reach.
99Klein is correct that you should first get your saddle position so that your legs are in the correct position in relation to the pedals. Then evaluate reach.
You can swap the stem first. The bars that come stock on the bike have a 76mm reach and 126mm drop which is already a compact bar. After swapping the stem, if you want further less reach look at Zipp, whose compact/ergo bars have 70mm reach.
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Rhyon, you need a shorter stem. A shorter stem will affect handling much less than having your saddle too far forward or reaching for bars that are too far. You can use a shorter stem or a shorter reach bar - both accomplish the same thing.
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Sounds like you need a sportive frame and setup until you become more comfortable with being more extended and lower. You can try using a stem with more upward angle degree positioning and see how that feels. Try an inexpensive one first. If it works for you, then you could replace with a nicer one, or simply leave it alone.
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Thank you everyone, this is very helpful. What length stem would you recommend downsizing to - 90mm? 80mm?
Last edited by ryhon; 02-22-18 at 07:19 AM.
#7
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The stack and reach are only 6mm different between the 56 and 58 cm frames. At your height 58 would be the correct size so it should be fine unless you have unusual leg/torso proportions. What's your inseam?
99Klein is correct that you should first get your saddle position so that your legs are in the correct position in relation to the pedals. Then evaluate reach.
You can swap the stem first. The bars that come stock on the bike have a 76mm reach and 126mm drop which is already a compact bar. After swapping the stem, if you want further less reach look at Zipp, whose compact/ergo bars have 70mm reach.
99Klein is correct that you should first get your saddle position so that your legs are in the correct position in relation to the pedals. Then evaluate reach.
You can swap the stem first. The bars that come stock on the bike have a 76mm reach and 126mm drop which is already a compact bar. After swapping the stem, if you want further less reach look at Zipp, whose compact/ergo bars have 70mm reach.
My current bike is a 57.5 and the top tube is a touch longer than I'd prefer.
People have different geometries just like bikes do which is why so many end up on the wrong size bikes when told things like a 58 is good for 6' tall.
#8
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You can't compare the Reach on two frames with different Stacks directly. The real difference in reach between them is 17mm at the same stem height.
Rhyon, you need a shorter stem. A shorter stem will affect handling much less than having your saddle too far forward or reaching for bars that are too far. You can use a shorter stem or a shorter reach bar - both accomplish the same thing.
Rhyon, you need a shorter stem. A shorter stem will affect handling much less than having your saddle too far forward or reaching for bars that are too far. You can use a shorter stem or a shorter reach bar - both accomplish the same thing.
No one can answer that question without seeing you and knowing your measurements on the bike. Get a bike fitting done.
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Whether it will be enough is another matter.
The way I estimate how much shorter a stem should be is how far behind the hoods do I need to plant my hands to feel comfortable for long stretches of riding.
You can also experiment with rotating the bars upwards a little. It kind of messes with the ergonomics of the hoods/levers, but it gives you an idea of what the hand position feels like.
#10
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Last year I had your exact concerns. I swapped my 110mm stem for a 90mm stem. It made a big difference for me and accomplished exactly what I wanted it to. I cannot detect any difference in the bike being more twitchy.
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Changing the stem length will make a slight difference in steering feel, but it's only noticeable when you first make that change. The shorter lever requires less hand movement to rotate the steerer tube, but once above walking speed this difference is barely noticeable.
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Fit advice on the internet without measurements or pictures is usually more worthless than good. Seek out a good fitter in the area or even experienced riders. Just from looking they can usually tell you if you're way off or if it's close.
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Absolutely.
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My sense is the position of the rider is more wrong than his bike dimensions with current stem.
Many a 6' rider on a 58 with 120mm stem including me. Lance at 5'10" rode a 58 with 130mm stem. His posture was correct on the bike. A road bike can, but generally shouldn't be ridden as a beach cruiser.
OP, go to a professional fitter and have him place you on your bike with your pelvis/hips in the correct rotated forward position with good back posture which starts with correct hip position...not like sitting at your kitchen table but rather with your bum sticking out with saddle in the middle of the seat clamp.
You will have a lot more reach...maybe even desire a longer stem.
Last edited by Campag4life; 02-22-18 at 02:32 PM.
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Yup very much this. IMO even with pics or video it would be hard to give credible advice on your fit. That said, stems are relatively easy to swap. Worth a try.
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The only real "fit advice" offered in this thread is "a shorter stem isn't a bad thing - give it a try".
Does anyone actually believe that is bad advice?
Does anyone actually believe that is bad advice?
Last edited by Kontact; 02-22-18 at 04:18 PM.
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To 70mm no, much less than that and there might be reason to look elsewhere. Road bikes should not have 50mm stems with out another good reason.
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Personally, I wouldn’t go shorter than 80-90mm on a road stem. I noticed a big difference in twitchiness going to a 10mm shorter reach bar with a 100mm stem. Mind you, I ride an already very nimble bike (Allez Sprint), but my feeling is, if you get down to an 80mm stem, you probably need to look at going down a size on the frame.
I’m 5’9.5” on a 56 with 100mm stem, at 6’, I’d be surprised if you had reach issues on a 58 with a 90 or 100.
I’m 5’9.5” on a 56 with 100mm stem, at 6’, I’d be surprised if you had reach issues on a 58 with a 90 or 100.
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Without seeing the rider on the bike(, and measuring the rider's flexibility, none of our opinions matter.