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Posted

Hi to all!

I am trying to find the measures of the reach of various manufacturers' shifters, in the latest versions 10s/11s/12s, disc brakes or rim brakes, mechanical or electronic, unfortunately I have not found any data on the matter.

Does any of you have any reliable data?

Since I'm looking to move from Ultegra R8000 mechanic with rim brakes to Ultegra Di2 12v disc (R8100), there is anyone who know which is the difference in length to the "base of the hoods" , I'm tryng to understand if I have to buy shorter stem, is there anyone who can help me?

 

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Posted

Don't change your stem, but rather look at the reach of your handle bars.

Older bars were set at about 100mm
Newer bars are about 80mm or so to compensate for the longer hoods of disc brakes
 

Posted
4 hours ago, splat said:

Don't change your stem, but rather look at the reach of your handle bars.

Older bars were set at about 100mm
Newer bars are about 80mm or so to compensate for the longer hoods of disc brakes
 

Thank you very much

 

Posted
29 minutes ago, Rone69 said:

Thank you very much

 

Can change your stem just dont go shorter than 90.. 

also can look into shorter reach bars.. 75mm reach.. measure your shoulders if you do that and get the correct width while you at it.. 

hood angle can also shorten your reach if you not too far off.. 

Posted
10 hours ago, Bike Dewing said:

Can change your stem just dont go shorter than 90.. 

 

It really depends on the bike. Many modern geo gravel bikes come with 70 or 80mm stems. The bike bike radar voted as best road bike a year or two ago comes with an 80mm stem in a size large. Head tube angle, reach, fork off set all play a role. 

Posted
Just now, SSCC said:

It really depends on the bike. Many modern geo gravel bikes come with 70 or 80mm stems. The bike bike radar voted as best road bike a year or two ago comes with an 80mm stem in a size large. Head tube angle, reach, fork off set all play a role. 

Look, my

opinion there is based of bike fitter james videos and i have actually installed an 80mm stem on my gravel/allroad bike.. the front end does get a lot twitchier bellow 90.. i did not feel comfortable with it.. went back to 90 after two shortish rides

Posted
29 minutes ago, Bike Dewing said:

Look, my

opinion there is based of bike fitter james videos and i have actually installed an 80mm stem on my gravel/allroad bike.. the front end does get a lot twitchier bellow 90.. i did not feel comfortable with it.. went back to 90 after two shortish rides

I wouldnt go on much of anything Bike fitter James suggests in general. Maybe the battery he uses in his drill but thats about it 

Posted
14 minutes ago, J Wakefield said:

I wouldnt go on much of anything Bike fitter James suggests in general. Maybe the battery he uses in his drill but thats about it 

Does no one read properly.?

I TRIED IT FOR MYSELF AND I WASNT COMFORTABLE WITH IT..

the bike handling definitely became a more wild than i was comfortable with🤷🏼‍♂️.. 

“i feel like im taking crazy pills.!”🤦‍♂️

Posted
53 minutes ago, SSCC said:

It really depends on the bike. Many modern geo gravel bikes come with 70 or 80mm stems. The bike bike radar voted as best road bike a year or two ago comes with an 80mm stem in a size large. Head tube angle, reach, fork off set all play a role. 

Gravel terrain maybe a twitchier front end can be beneficial for navigating tougher more technical sections.. that would make sense to me..

 

buuut im not that confident enough at my skill level..

got the 80 stem in the cupboard.. maybe again one day🤦‍♂️🤣

Posted
6 minutes ago, Bike Dewing said:

Does no one read properly.?

I TRIED IT FOR MYSELF AND I WASNT COMFORTABLE WITH IT..

the bike handling definitely became a more wild than i was comfortable with🤷🏼‍♂️.. 

“i feel like im taking crazy pills.!”🤦‍♂️

Yes I dont think they do, they seem to read to read not read to understand like you have here.

I would suggest looking at changing meds from crazy pills to Ritalin cause all I said as a general is not suggesting listening to BFJ.

Unreal. 

Posted
1 hour ago, J Wakefield said:

I wouldnt go on much of anything Bike fitter James suggests in general. Maybe the battery he uses in his drill but thats about it 

Could you elaborate on why? A lot of what he says makes sense to a pleb like me, but maybe that is just because I "want" it to make sense?

Posted (edited)
1 hour ago, J Wakefield said:

Yes I dont think they do, they seem to read to read not read to understand like you have here.

I would suggest looking at changing meds from crazy pills to Ritalin cause all I said as a general is not suggesting listening to BFJ.

Unreal. 

But in this instance i feel he was correct.. as i tried it.. 

otherwise i wouldnt have said anything🤷🏼‍♂️.. 

why do you disregard what he says.? 
i found him to be correct there, and i share his love of Lake.. very good shoe maker.. 

do you go by Dr J Wakefield.?

it feels like haters will hate on this one🤣🤣🤣

Edited by Bike Dewing
Posted
37 minutes ago, Bike Dewing said:

But in this instance i feel he was correct.. as i tried it.. 

otherwise i wouldnt have said anything🤷🏼‍♂️.. 

why do you disregard what he says.? 
i found him to be correct there, and i share his love of Lake.. very good shoe maker.. 

do you go by Dr J Wakefield.?

it feels like haters will hate on this one🤣🤣🤣

I feel you don't know who you're talking to here. Not everyone on Bikehub is an armchair expert, some have real world experience too.

You're working off a sample size of one, I guarantee you that John has a few more reference points.

Posted
2 hours ago, Bike Dewing said:

Does no one read properly.?

I TRIED IT FOR MYSELF AND I WASNT COMFORTABLE WITH IT..

the bike handling definitely became a more wild than i was comfortable with🤷🏼‍♂️.. 

“i feel like im taking crazy pills.!”🤦‍♂️

I think it is as what was said above, depends on teh bike geometry.

I went from 110mm to 80mm stem and at the same time went from 440mm to 420mm bars on my road bike I cant say I feel the twitchiness you describe.

Posted (edited)
13 minutes ago, droo said:

I feel you don't know who you're talking to here. Not everyone on Bikehub is an armchair expert, some have real world experience too.

You're working off a sample size of one, I guarantee you that John has a few more reference points.

I have no idea who he is.. 

and until he defends his claim that james the bike fitter is rubbish i dont really care who he is.. 

tell me why.. and we can talk🤷🏼‍♂️
 

other than that i am just sharing my experience

Edited by Bike Dewing

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