1337 Trials Posted March 12, 2009 Report Share Posted March 12, 2009 Is a 16t sprocket on the rear with a 18t freewheel on the front to easy? Im thinking of getting a 15t sprocket if the 16t will give a very easy gear. Quote Link to comment Share on other sites More sharing options...
Papa Manual Posted March 12, 2009 Report Share Posted March 12, 2009 That's a hard question to answer. It depends on your style of riding, whether you ride street or natural etc. I use 18:13 for street and I find it too easy. Quote Link to comment Share on other sites More sharing options...
1337 Trials Posted March 12, 2009 Author Report Share Posted March 12, 2009 I want it to be the same as 18:12 on a mod... Quote Link to comment Share on other sites More sharing options...
forteh Posted March 12, 2009 Report Share Posted March 12, 2009 (edited) 18:16 on mod? You will be pedalling like mad everywhere Common mod gearing is 18:12 I believe, common stock gearing is 18:16 with short (165) cranks or 18:15 with long (175) cranks.edit: according to sheldon brown gearing calculator 18:16 on 26" is about the same a 18:12 on 20".This is assuming youre keeping the same crank length as that makes a massive difference to gearing feel. Edited March 12, 2009 by forteh Quote Link to comment Share on other sites More sharing options...
MikeCottTrials Posted March 12, 2009 Report Share Posted March 12, 2009 Normal on a mod is 18:12you can get a 13t from tarty though, if your wanting a slightly lighter gear Quote Link to comment Share on other sites More sharing options...
Jason222 Posted March 12, 2009 Report Share Posted March 12, 2009 I want it to be the same as 18:12 on a mod...Did no one else read this?18:16 with 170's on a stock. Quote Link to comment Share on other sites More sharing options...
forteh Posted March 12, 2009 Report Share Posted March 12, 2009 Did no one else read this?Yup, after I had finished typing my reply Personally I use 16:14 on 165 cranks which is near enough the same as 18:15 on 175 cranks. Quote Link to comment Share on other sites More sharing options...
Jamie_Neal Posted March 12, 2009 Report Share Posted March 12, 2009 I'm a fan of 18:16 with 170mm cranks. My knees can't cope with 18:15. Quote Link to comment Share on other sites More sharing options...
1337 Trials Posted March 12, 2009 Author Report Share Posted March 12, 2009 As the wheel im hopefully buying has a 16t cog on the rear and i have cranks to buy ile buy 175mm cranks and ile use the 16t cog allready with the wheel then or should I get shorter cranks? Quote Link to comment Share on other sites More sharing options...
forteh Posted March 12, 2009 Report Share Posted March 12, 2009 As the wheel im hopefully buying has a 16t cog on the rear and i have cranks to buy ile buy 175mm cranks and ile use the 16t cog allready with the wheel then or should I get shorter cranks?18:16 on 175 cranks will be pretty low gearing, if you have to buy some cranks I would go for some 170s so youre in the middle ground. Either way you will adjust to the new gearing with alittle time Quote Link to comment Share on other sites More sharing options...
1337 Trials Posted March 12, 2009 Author Report Share Posted March 12, 2009 I do have a gym routine etc so ide rather have a stiffer gearing is possible eg 18:12 on a mod is what I used to run. I think ile get 170mm cranks with a 15t cog on the rear and run the 18t tensile freewheel on the front... Quote Link to comment Share on other sites More sharing options...
JD™ Posted March 12, 2009 Report Share Posted March 12, 2009 I do have a gym routine etc so ide rather have a stiffer gearing is possible eg 18:12 on a mod is what I used to run. I think ile get 170mm cranks with a 15t cog on the rear and run the 18t tensile freewheel on the front... If you've got to buy cranks, and have a 16t rear cog and 18t freewheel already then go for 165 cranks if you want the slightly stiffer gearing... Quote Link to comment Share on other sites More sharing options...
1337 Trials Posted March 12, 2009 Author Report Share Posted March 12, 2009 Ile get these then ISIS 165mm http://tartybikes.co.uk/product.php?produc...category_id=514 Quote Link to comment Share on other sites More sharing options...
Jason222 Posted March 12, 2009 Report Share Posted March 12, 2009 (edited) run 175's if you run 18:15. 170's with 18:16. I don't think a harder gear has any real benefit in trials, as you can't hit the drivetrain with the same speed...Likewise...if you're using a harder gear so you can pedal up higher, then you should probably reassess your pedal up technique... Edited March 12, 2009 by Jason222 Quote Link to comment Share on other sites More sharing options...
forteh Posted March 12, 2009 Report Share Posted March 12, 2009 Likewise...if you're using a harder gear so you can pedal up higher, then you should probably reassess your pedal up technique...I was finding that with 18:16, was too slow for my tapping and rear wheel technique tried switching to 18:15 with the 165s and found it better for taps but just a touch too hard.Gone to 16:14 which is halfway between the 2 and adjusted my pedalling alittle and I can gap further, tap and backwheel higher than I could before (although 40" isnt very high for a back wheel :$ ) Quote Link to comment Share on other sites More sharing options...
Jason222 Posted March 13, 2009 Report Share Posted March 13, 2009 I was finding that with 18:16, was too slow for my tapping and rear wheel technique tried switching to 18:15 with the 165s and found it better for taps but just a touch too hard.Gone to 16:14 which is halfway between the 2 and adjusted my pedalling alittle and I can gap further, tap and backwheel higher than I could before (although 40" isnt very high for a back wheel :$ )Are you using a half stroke or full stroke? Quote Link to comment Share on other sites More sharing options...
forteh Posted March 13, 2009 Report Share Posted March 13, 2009 Are you using a half stroke or full stroke?I couldnt half stroke tap with 18:15 but Im learning with with 16:14, not as high but getting better Quote Link to comment Share on other sites More sharing options...
Jason222 Posted March 13, 2009 Report Share Posted March 13, 2009 I couldnt half stroke tap with 18:15 but Im learning with with 16:14, not as high but getting better Do you know how to full stroke tap? It's a much more effective technique, and it allows you to run a much lighter gearing. Quote Link to comment Share on other sites More sharing options...
forteh Posted March 13, 2009 Report Share Posted March 13, 2009 Do you know how to full stroke tap? It's a much more effective technique, and it allows you to run a much lighter gearing.Yeah, I could full stroke tap beforehand, either way going to a lighter gearing has helped my taps tremendously - before the front just didnt lift fast enough so I was putting the power in too early which meant that I didnt get much upwards advantage; dropping to 16:14 has meant that my tapping speed has slowed down alot and I can still put power into it yay Quote Link to comment Share on other sites More sharing options...
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