[Salsa_Lover]

Hello all,

I ride a Trek 5500 full dura-ace 10sp and have a commuter bike for the city a Trek T30.

This is the navigator equiped bike, triple crankset and 7 speed cassette with grip shifters,
The rear derailer is a shimano acera and has Tektro v-brakes

This is an european model so I guess it is not avaliable in America.

here you have the specs

https://www.thecyclepeople.com/productdetails.asp?id=1760

However it is a very nice city bike, with aluminum frame and well equiped, I absolutely hate how this bike switches speeds. The rear derailer, changes cogs when I am climbing or even when pedalling hard and I am on the handlebars.

It is maybe normal for a bike on that price level, but it is really annoying and I keep comparing it with my racing bike that shifts speeds smoothly and never fails me on climbs or sprints.

So I decided to upgrade it.

I have 2 choices.

1. Upgrade the shifters, cassette, rear derailer and chain to Deore LX
2. Change the whole drivetrain for a Shimano 105 groupset

So my questions are.

for option 1:

The front crankset is a 7 speed, would it work with a 9 speed drivetrain ? Or I have also to change the shimano TX71 48s/38s/28s crankset for another ?


for option 2

I could change the whole drivetrain to a Shimano 105 group I can get at good price. I would also then change the flat handlebars to a road handlebars and install the shimano STIs.

Actually this option is what I would like most, I love the racing handlebars and generally dislike the flat handlebars.

But, would the STIs work with the V-Brakes ?
If not, Can I install the 105 brakes with the 700x35c wheels and tires?

Thanks for your answers

 

[Salsa_Lover]

Thank you for yor answers

I got me a full Alivio set with a Deore derailer for cheap, new parts, taken out of a mountain bike by someone who upgraded it from the start

only $50 for the Alivio shifters, front derailers, cassete 11-34 and the Deore rear derailer.

I'll set up the bike with those components and put on a new chain.

Tath would solve the problem