Bobby Fox Posted December 24, 2007 Report Share Posted December 24, 2007 hey guys, ive always run 20t chainring with rs7's. Im changing cranks and sprocket soon and it would be good if you could tell me the standard gear ratio's are for both if i was running a 16t and 18t front sprocket, 18:? 16:? cheers for the help lads Quote Link to comment Share on other sites More sharing options...
The Duck Posted December 24, 2007 Report Share Posted December 24, 2007 (edited) Dont get it... but if you want the same ratio as 18 16 you'll want 20 18 methinks.Edit: Oh sorry... I think the 'standard' is 18 - 15, but i run 18 - 17 and its reeeel nice. Try 18 - 16.Not sure about 16... Edited December 24, 2007 by Quackers Quote Link to comment Share on other sites More sharing options...
Revolver Posted December 24, 2007 Report Share Posted December 24, 2007 uwant summat like 1:1.2, which would be maybe... 18:15, or 16:13i think Quote Link to comment Share on other sites More sharing options...
James Quigley Posted December 24, 2007 Report Share Posted December 24, 2007 I used to run 16:14 (as 13 was too hard and the chain didn't quite fit)Now I'm running 18:15 and it's awesome Quote Link to comment Share on other sites More sharing options...
Krisboats Posted December 24, 2007 Report Share Posted December 24, 2007 I ran 16:14 on my t-rex with 170mm cranks and it was far too easy, no power or anything. Now i'm running 16:a3 and it was a bit stiff, but some 175mm cranks sorted it out and now it feels great... though other people often say its a bit stiff.... guess they must have weak legs (boumsong ) Quote Link to comment Share on other sites More sharing options...
Andeee Posted December 24, 2007 Report Share Posted December 24, 2007 20 : 18 Better than 22 : 18 Quote Link to comment Share on other sites More sharing options...
Jason222 Posted December 25, 2007 Report Share Posted December 25, 2007 20:17 Quote Link to comment Share on other sites More sharing options...
Skoze Posted December 26, 2007 Report Share Posted December 26, 2007 18:16, it's a nice ratio but if i'm going at any kind of speed then theres just nothing left to actually launch myself up things, so i'm going to try 18:15 when the tarts are open again Quote Link to comment Share on other sites More sharing options...
James Quigley Posted December 26, 2007 Report Share Posted December 26, 2007 18:16, it's a nice ratio but if i'm going at any kind of speed then theres just nothing left to actually launch myself up things, so i'm going to try 18:15 when the tarts are open again You'll love it. Quote Link to comment Share on other sites More sharing options...
fyfey Posted December 27, 2007 Report Share Posted December 27, 2007 You'll love it.I'm currently on 18:16... was thinking I could do with a bit more beef in the drive, so might give 18:15 a go for a bit Quote Link to comment Share on other sites More sharing options...
James Quigley Posted December 27, 2007 Report Share Posted December 27, 2007 that's what I meant, 18:15 is awesome. Quote Link to comment Share on other sites More sharing options...
Luke Rainbird Posted December 27, 2007 Report Share Posted December 27, 2007 20:17 I'm with him Quote Link to comment Share on other sites More sharing options...
Bobby Fox Posted December 27, 2007 Author Report Share Posted December 27, 2007 thanks for all the help got it sorted now, i have been running 20:17 and loved it but now using 18:15 and love that just as much, if anything 18:15 is a tiny tiny bit harder that the 20:17 but soon get used to it cheers Quote Link to comment Share on other sites More sharing options...
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