0
votes
1answer
694 views

RevoShift Friction: shifting to the largest gear takes a lot of force?

My wife's bicycle has Shimano Revoshift shifters, and while the right (rear) one works fine, the left (front, Friction) has been problematic for a while. Originally, when we bought the bicycle, the ...
1
vote
2answers
140 views

Shimano Revo shifter does not shift [closed]

I have recently bought a new bicycle and the left Shimano Revo shifter (3 speed) is not shifting, what can I do?
6
votes
4answers
194 views

Electronic shifters

I have been reading alot about the electronic shifters that are out now, specifically the ones on TREK bikes. I was wondering if they are worth the price, and more importantly how do they perform.
6
votes
1answer
314 views

Shifters and internal gears

I have an Airnimal Joey with 8 (internal, Shimano Inter 8) rear gears. I wanted to install drops handlebars and the shifters. I got the Shimano Sora ST-3300-8 Right / Rear 8 Speed Shifter, which I ...
3
votes
2answers
391 views

(Automatic Bike Project) amount of torque required to change gears?

I am planning to build an electronically controlled automatic bike transmission for my senior design project. I'm personally more of an electrical guy, so dealing with the mechanics is somewhat new to ...
1
vote
1answer
329 views

How long does a shifter, rear mech and front mech last?

I am talking about absolutely dirt cheap components which are non-branded. In terms of number of kilometres how long do they last? The bicycle is ridden on city and country roads and maintained ...
2
votes
2answers
576 views

Converting downstem shifters to barcons

What considerations should be made for converting a downstem shifting system to barcons? Both the current system and the system that I would like are friction shifters. The bike is a 1986 Peugeot ...
3
votes
1answer
162 views

Are the numbers on a shifter standardised?

My bike has several gears labelled one to six. Do these numbers relate specifically to a certain standard? In other words, would a bike set to say gear four on one bike, perform in the same way as ...
0
votes
1answer
594 views

swap Shimano Alivio gear indicator for cover plate

I want to move my brake levers and gear shifters around a bit. The problem is my gears (Shimano Alivio, bought 4 years ago) have a large gear indicator on it. This is meaning that either the brakes ...
22
votes
5answers
1k views

Can you shift both the front and back gears simultanously?

Is it advisable to shift both the front and back gear simultaneously? Can this cause any damage?
3
votes
1answer
4k views

What are the advantage of the different gear shifters

I have just buy for the first time a road bike (Boardman Team Carbon) after long years on hybrids bike and unfortunately due of a injury I didn't have much time to experience with it. The bike has a ...
7
votes
4answers
2k views

How to fix front gear taking 2 shifts just to move onto next cog

I was out on a ride yesterday and several times when I was changing up and down between big chain ring and little chain ring (I only have the 2 rings up front) it required 2 gear changes. The gears ...
4
votes
3answers
2k views

Gear indicator on SRAM X5 Shifter shows wrong gear

I have SRAM X5 Shifters like this one: The indicator is now showing the gear above the one I'm actually in, so if like the picture it shows a 2 I would actually be in 1 (the smallest chainring), a ...