Riding position
Author
Discussion

.Adam.

Original Poster:

1,861 posts

286 months

Sunday 18th January 2009
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When riding my bike, after a while I tend to get an ache in my lower back. I realise I can most probably solve this by altering my riding position, but I don't know where to start. At the moment I have got a 90mm 0° stem on my bike, but don't want to spend loads on buying stems randomly until I get one that suits me better. Is it a case of pain/ache in a certain area corresponds to needing higher/longer/shorter stem, seat moving back/forward etc?

SystemParanoia

14,343 posts

221 months

Sunday 18th January 2009
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  • watches thread*

P-Jay

11,243 posts

214 months

Sunday 18th January 2009
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I used to get lower backpain when riding. Turns out it was down to a week core. Couple of crunches a night and I was sorted.

arryb

11,184 posts

225 months

Monday 19th January 2009
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I think it's one of these things where if you're not used to it then it will ache a bit because you're using muscles that you don't use as much in any other situation.

There was a post a while ago on here about back pain, could be worth trying to dig that out....

Parrot of Doom

23,075 posts

257 months

Monday 19th January 2009
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I find that when working, I'm typically carrying about 20lb around my waist, supported by my back and shoulders in a harness. It effectively means I'm constantly leaning backwards (although not by appearance) to cancel out the pull of the equipment, and after a day I get a sore lower back.

A similar thing may be happening to you, so perhaps you are leaning too far forward, and need to reduce the reach of your arms to the handlebars?

mat205125

17,790 posts

236 months

Monday 19th January 2009
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Even with the geometry set correctly, your posture is very important too

I used to get pains in my lower back on my road bike until my mate noticed that I was riding with a hunched / arched spine. It's important to keep your back relatively straight. I found that making a deliberate effort to push my shoulders back straightened my back's posture, and eliminated the pains.

This is the kind of posture that you want, rather than a curved spine.


.Adam.

Original Poster:

1,861 posts

286 months

Monday 19th January 2009
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Have been riding my bike for a while now, so I don't think it's because I am not used to it, some free things to try, if they don't work then I think I shall try a shorter stem. Thanks for the suggestions!thumbup

Rico

7,917 posts

278 months

Monday 19th January 2009
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If nothing else... going from a 90mm to a 50 or 70mm stem will make the bike a lot more fun to ride.

Riding position is an art. Even to the extent that a very successful triathlete and road riding mate got a specialist to analyse his bike position and found him ever so slightly out... a tiny change made him even more powerful and comfortable.

.Adam.

Original Poster:

1,861 posts

286 months

Tuesday 20th January 2009
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Anyone know what the problems might be if I was to get a shorter stem and it was too short?

prand

6,230 posts

219 months

Tuesday 20th January 2009
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A stem that is too short for you would be ok if you are riding on the hoods, as you will find yourself in a more upright position - in more of a MTB position. But it could cause your back to arch uncomfortably when you get down on the drop bars, and put your balance all out. You could counter this by sliding the saddle back along the rails, but then you're likely to start affecting your ability to get the power down, and your knees might not thank you for the change in angle with the pedals.

Hence the importance of getting a road bike properly fitted, as you will get a more comfortable and effective ride.

SOmething people forget to mention is your own core strength and flexibility of your back, hips and hammies. You will find a bike is much more comfortable, particularly over longer distances, if your lower back can support the weight of your trunk and arms, plus be able to flex and bend into the low positions required on road bikes, while still being able to pedal hard. I'd say that is worth at least 50% of a good fit on a bike.


.Adam.

Original Poster:

1,861 posts

286 months

Tuesday 20th January 2009
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This is for my Orange 5, so no drop bars to worry about. In half a mind to try a 50mm stem, as Merlin are selling Thompson ones for £50, figured if it ends up being too short, I could most probably get most of my money back selling it second hand.

Nick_F

10,598 posts

269 months

Tuesday 20th January 2009
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You can get away with a bit more variation on an MTB than or a road bike, and a lot more than you can on a road bike with aero bars.

If you're just looking for a good reason to buy a new stem smile then the change might well work, but 50mm is going to make the bike pretty twitchy.

Do you watch a lot of TV? If so, get yourself a swiss ball and sit in that to watch the telly a few evenings a week: it'll make all the difference to your core strength for very little hassle.

Saddle bum

4,211 posts

242 months

Thursday 22nd January 2009
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Nick_F said:
You can get away with a bit more variation on an MTB than or a road bike, and a lot more than you can on a road bike with aero bars.
A normal road bike has more variations in position than an MTB.

rhinochopig

17,932 posts

221 months

Thursday 22nd January 2009
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Having just had four months off with a pro-lapsed disk - due to over training on an MTB - my advice would be call the national back care charity for some proper advice. I posted up here a summary of what she said to me a couple of months ago. Haven't got time to search though.

theboymoon

2,699 posts

283 months

Thursday 22nd January 2009
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hmmmm. comments above make me realise that i should probably get my riding position looked at and sorted by someone who really knows what they are doing.

Not so much sore as a very very tight all across the lower back.

jshell

11,965 posts

228 months

Thursday 22nd January 2009
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Nick_F said:
If you're just looking for a good reason to buy a new stem smile then the change might well work, but 50mm is going to make the bike pretty twitchy.
I was thinking of changing my stem, but I'd like to get a balance between 'twitchy' as you mention and boat-like 'tiller' steering without splashing out on a number of stems - as I did with saddles... Any advice?


Nick_F said:
Do you watch a lot of TV? If so, get yourself a swiss ball and sit in that to watch the telly a few evenings a week: it'll make all the difference to your core strength for very little hassle.
I agree with this, they're great for core strength!

Nick_F

10,598 posts

269 months

Thursday 22nd January 2009
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Saddle bum said:
Nick_F said:
You can get away with a bit more variation on an MTB than or a road bike, and a lot more than you can on a road bike with aero bars.
A normal road bike has more variations in position than an MTB.
I wasn't being especially clear; what I meant was that, because of the nature of road riding, the fit of a road bike needs to be more closely tailored than that of an MTB. Few MTB riders spend hours at a time in the same position - they're on and off the bike, leaning forward, leaning back, standing up, going over the bars smile ...etc; whereas road riders will stay glued to the saddle for miles, with the odd change of hand position and a quick stretch every now and then - and still less than that on aerobars.

Nick_F

10,598 posts

269 months

Thursday 22nd January 2009
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jshell said:
Nick_F said:
If you're just looking for a good reason to buy a new stem smile then the change might well work, but 50mm is going to make the bike pretty twitchy.
I was thinking of changing my stem, but I'd like to get a balance between 'twitchy' as you mention and boat-like 'tiller' steering without splashing out on a number of stems - as I did with saddles... Any advice?
There are just too many variables - size of frame relative to you, how you distribute your weight, the frame's head tube angle, etc etc. All that matters in terms of a single component change, though are the dimensions; if you're lucky then your LBS will have a number of old stems floating about that you can borrow to get the feel that you're after - once you've sorted the length/angle combination that you want you can then decide what make/design to buy.

Under those circumstances it would be polite to buy from the LBS in question...

If that's not realistic then I'd guess that a 20mm change in stem length will be noticeable and a 50mm change will feel like an entirely different bike.

.Adam.

Original Poster:

1,861 posts

286 months

Sunday 25th January 2009
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Just been out for the first time with my new stem, so have gone from a 90mm 0° to a 50mm 0°. To be honest, I didn't feel much of a difference in the handlingpaperbag, certainly didn't feel too twitchy like I thought it might, noticed it a bit when climbing in the saddle with the front wheel wanting to lift easier, but soon got used to it.

In regards to the original reason for changing, lower back ache, the jury's still out on that. I want to give it a few rides before I make my mind up, I think it is a better position for me, it's certainly no worse, but I want to get used to the new position before I pass any comments! Started doing crunches each morning and evening as well, so hopefully this will help bring my core strength up. Now got a Thomson 90mm stem going spare....