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Turning a stem around


Uni

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Posted

I'm not sure I understand what you want to do, if it is what I think it is, I doubt it will work. The steerer looks like a 27.2 and the bar looks oversize. Two different sizes on each end and a stem is not straight, meaning the bar would not sit straight

Posted

To shorten your effective reach you can do 

1. raise the handle bars, but this depends on the fork. Not normally an option, but not impossible

2. shorter stem

3. steeper rise stem, lifting the bars

4. riser bars

5. narrower bars

 

1. Relative to current setup

2. Yes

3. Yes

4. Debatable

5. Yeah, but now we're very much into "effective reach" territory and to have a meaningful impact you will have to go quite a bit narrower which could lead to some funny "MTB Fails" vids on YouTube in the long run. 

Posted

First off, saddle adjustment has got to be ideal for pedalling effeciency and comfort, and should NEVER be adjusted in an attempt to change the reach.

 Yes!

 

 

... so I'll give it a try and report back...

 

Please, for the love of country, whoever will be filming this need to hold their phone to shoot landscape so we can get a better view of the exact moment the mango hits the fan...  :D

Posted

Yes!

 

 

 

Please, for the love of country, whoever will be filming this need to hold their phone to shoot landscape so we can get a better view of the exact moment the mango hits the fan... :D

Uni, are you done yet?

I want to see that mango fly

Posted

Uni, are you done yet?

I want to see that mango fly

Hahaa there's good reason I don't own a gopro. I'd break the Internet.

I'll let the Vegmot guinea pig it. Won't strip everything until i have a shorter stem to swap out. I think the 80 swapped round would be too much anyway

Posted

Okay, so I tried it...

 

Reach before(tip of saddle to centre of bars): 495mm

Reach after: 390mm

 

So... It does work. Feels a little bit odd, but not as bad as I'd thought... Looks crazy, crazy weird... It is bad for my knees. they hit the bars the whole time...

 

But heck, give it a try, see if it does something for you-if you're looking for a shortcut to manuals, THIS IS IT!

 

Oh, I used a 60mm stem

 

Yeah and I won't be uploading any pics, sorry...

Posted

Okay, so I tried it...

 

Reach before(tip of saddle to centre of bars): 495mm

Reach after: 390mm

 

So... It does work. Feels a little bit odd, but not as bad as I'd thought... Looks crazy, crazy weird... It is bad for my knees. they hit the bars the whole time...

 

But heck, give it a try, see if it does something for you-if you're looking for a shortcut to manuals, THIS IS IT!

 

Oh, I used a 60mm stem

 

Yeah and I won't be uploading any pics, sorry...

Without photos being posted it never happened!

Posted

And, just because you are nice to me Uni, I tried it with a 110mm too... Came ever so slightly closer to falling, but only because my reach was out by 135mm... It still works okay, with the handling not too weird... Would I ride a trail with it set up like that? O heck no!

Posted

And, just because you are nice to me Uni, I tried it with a 110mm too... Came ever so slightly closer to falling, but only because my reach was out by 135mm... It still works okay, with the handling not too weird... Would I ride a trail with it set up like that? O heck no!

When you mentioned banging your knees, that was the selling point to not enabled try it. I have a bruise on my knees from yesterday, coming to a stop and sliding off and slaming into the handlebar, yeah leg clearance alone would me problematic, I didn't think it through :(

 

Thanks for trying though.

 

And thanks everybody for the feedback

Posted

No harm in asking of course.

 

To simulate what the effect on steering could be...

1. Get out of your saddle without completely standing up. Just enough to be able to have your shoulders directly above the bars with the weight of your upper body pushing straight down into the bars

2. Take a SHORT trip down a flat, wide, open road with no cars, children, livestock or neighbours with GoPros. (Pro tip: look out for the flashing red light on the front of the GoPro to know those bastards ARE recording)

3. Try some steering inputs and SMALL changes of direction and see how that feels.

4. Whisper "wtactual..." under your breath

5. Move the stem back and pretend this never happened.

 

No visualise the impact of this move. Even if you could get your knees to clear under normal circumstances you will be stuffed as soon as there's some movement of the bars. You won't be able to stand and pedal EVER and in order to not close your lungs up you will need a stack height of a giraffe. 

  • 4 weeks later...
Posted

Feedback. Went all the way down to a 35mm . picked one up from Rapide. 

Only been on one test ride. 

i did some drills with turning and basic handling, figure 8s - took a while but seems fine. According to google it will affect your climbing, I'm not sure if it did - I think i was just feeling a tad off, from a standing and pedaling was a tad bit more cramped but not anything that would mean me banging my knees or anything. 

 

The most notable thing - the Niner's brakes are hardcore and there's one stretch of trail where I tend to brake too hard into a corner and I often have a whoaa almost OTB moment - didn't have that yesterday.

 

Will keep it for a bit and see how it goes. Yesterday on a 30km ride my neck wasn't too sore and i'm not sore this morning. Will still have to test it out on longer rides and find some tight switchbacks  :whistling:

Before:

post-44041-0-07875400-1502698525_thumb.jpg

After:

post-44041-0-11412900-1502698530_thumb.jpg

 

I was pretty chuffed with myself for managing to swap out the stem by myself (though I had a blonde moment when i put a strap around to hold the bar - put the stem back and now the strap is stuck - had to cut the strap - was less of a mission to redo everything )

post-44041-0-63138900-1502698650_thumb.jpg

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