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Re: Gear inches - Is 2" Difference Significant

Posted: 8 Jul 2016, 7:09pm
by reohn2
RickH wrote:I'm in a minority - I've only ever used Campag Ergos & not STIs (back in the 90s I fitted 8s Ergos on my 7s Shimano geared bike) - but I've read somewhere (but can't remember where) that STIs are broader so need a bit more finger stretch even if the distance from the hood to the lever is the same as you've got more of your hand wrapped round the hoods.

Rick.


I can see the truth in that,the later STI's(8 and 9sp)are wider than Campag Ergo's.
Though the earlier RSX/RX100/105 7 & 8sp units(the one's with the allen bolt head showing at the front) were much narrower.

Re: Gear inches - Is 2" Difference Significant

Posted: 14 Jun 2018, 11:53pm
by Psamathe
Decided and done now. Gone for Tiagra 4700 10sp with triple BUT with the 11-34 cassette; the configuration Shimano say is no good - they say you can only go to the 11-32 with the triple - but I wanted the 34 and excellent LBS thought it might work and worst case a bit of "chain droop" if you cross the gears stupidly (but I was happy to lose the 11 on the cassette and turn it into a 9-speed using the limit screws if necessary).

But they installed it all and on a stand showed me the completely crossed gears (both smallest cogs) and no issues (both big cogs no issues as well) - I wont bother trying it when riding but looked good on the stand. Gets me down to 23'ish gear inches.

Bit early to comment on the quality as only done a short ride and still getting used to it and the new gearing.

All fairly expensive but still a lot cheaper than a new bike.

(Reviving another old thread)

Ian

Re: Gear inches - Is 2" Difference Significant

Posted: 15 Jun 2018, 2:00am
by NATURAL ANKLING
Hi,
I said that I have a 18.5" which I have used for touring up hill off road grass and steps too!
And that is near my limit of endurance.

I doubt you would tackle terrain that hard, your 23" will do fine...................it will only be your fitness that will hold you back.
Happy touring.

Re: Gear inches - Is 2" Difference Significant

Posted: 15 Jun 2018, 9:00am
by Psamathe
NATURAL ANKLING wrote:Hi,
I said that I have a 18.5" which I have used for touring up hill off road grass and steps too!
And that is near my limit of endurance.

I doubt you would tackle terrain that hard, your 23" will do fine...................it will only be your fitness that will hold you back.
Happy touring.

I don't mind getting off an pushing - just I don't want to be getting off and pushing on every little incline.

Having spent all that money, Sods Law says that other issues will prevent me departing ....

Ian

Re: Gear inches - Is 2" Difference Significant

Posted: 15 Jun 2018, 9:11am
by NATURAL ANKLING
Hi,
Always too busy to go touring, you look at the weather and think mmmm.......

Re: Gear inches - Is 2" Difference Significant

Posted: 15 Jun 2018, 9:12am
by gaz
Psamathe wrote:I don't mind getting off an pushing

The standard 24" bail out gear, aka two feet.

Re: Gear inches - Is 2" Difference Significant

Posted: 15 Jun 2018, 10:09am
by horizon
Psamathe wrote:I don't mind getting off an pushing - just I don't want to be getting off and pushing on every little incline.



(I think two threads have been merged?)

You won't regret lowering your gears, only not lowering them a bit more. 23" should be fine (depending on where you are going and how much you are carrying - but camping usually means weight). I was in Cornwall carrying about 25 kg and "enjoying" a 17" gear but I still walked up some hills. It's only when you cannot push your bike up the hill that you need to worry (it came close)!