sweet Posted January 25, 2005 Report Share Posted January 25, 2005 hi ive just bought a profile hub for my python copy and it came with a 12 tooth cog. at the moment im running 170 burns with 20 tooth front cog. i tested it and it felt really hard. im wondering should i stick to this gear, or otherwise ill have to buy new cranks, which i cant afford at the moment Quote Link to comment Share on other sites More sharing options...
TheMunn Posted January 25, 2005 Report Share Posted January 25, 2005 You should try and make it work, but if your having real problems with it then you should look at changing it. Quote Link to comment Share on other sites More sharing options...
Bucky Posted January 25, 2005 Report Share Posted January 25, 2005 have you considered the Ti bash????? im pretty sure that might make it too easy for a 12th rear thought. apart from that eitehr live with it or save up to get tensiles. Quote Link to comment Share on other sites More sharing options...
JT! Posted January 25, 2005 Report Share Posted January 25, 2005 (edited) Your running a 20:12 which is a '1.67' gear ratio. normaly mod have a '1.5' gear ratio which is 18:12. So yeah, that makes it ver high. You don't need to change your cranks, you can get a bigger cog on the back. 20:14 = '1.43' ratio 20:13 = '1.54' ratio The bigger cog you have on the back, the lower the gearing. This is the most inexpensive way of doing it, but you'll need a bit more chain. Mind you if your a very streety person, and wouldnt mind a bit of speed etc, you could stick with it, pedal gapping would be nice. but normal gapping, and stuff like that will be a bit of a struggle. :mellow: Edited January 25, 2005 by JT! Quote Link to comment Share on other sites More sharing options...
Dai the Socket Posted January 25, 2005 Report Share Posted January 25, 2005 I have noticed that and so have my mates on my new python. I've got Monty Xlite 158mm cranks with a 12t rear cog. Might get a 13t to make it feel normal again! Quote Link to comment Share on other sites More sharing options...
sweet Posted January 25, 2005 Author Report Share Posted January 25, 2005 where would i be able to purchase a bigger cog for the rear that will fit the profile bikedock,supercycles etc Quote Link to comment Share on other sites More sharing options...
Mark W Posted January 25, 2005 Report Share Posted January 25, 2005 When I was testing a proto cassette hub before, I was running a 22t front ring, and it was a bit of a mission getting a nice ratio at the back. I ran 22:14 most of the time, which I felt was "nicely" hard*. However, I went to 18:12 when I went to front freewheel, and it felt immensely nice. I also went from 170mm to 158mm cranks though, so that had something to do with it too. Anyway, it's a bit tricky, but I'd generally go for perhaps a little harder than usual, e.g. the 20:13 ratio. Because you've got 170mm cranks, it'll be a bit easier to pedal, so it'll probably equate to nearly the standard mod ratio? Mark. PS. www.customriders.com should be able to help you, or *maybe* Tartybikes.co.uk seeing as they're getting Profile stuff in. If not, www.wiggle.co.uk, www.winstanleysbmx.com, and there might be a few more out there. *Used to do roadie time trial shit, so I've got more leg power than most, I guess. Quote Link to comment Share on other sites More sharing options...
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