BringThatShtIn Posted September 16, 2009 Report Share Posted September 16, 2009 The thing is, I need a rear cog with 15t or less, but because of gear ratios this means I need a chainring with 18t and tarty only stock 20t and 22t. Anybody know how I can get a trials-suitable chainring? Quote Link to comment Share on other sites More sharing options...
padarik Posted September 16, 2009 Report Share Posted September 16, 2009 what cranks are you using? going to be hard to get one unless you have front freewheel cranks or middleburns Quote Link to comment Share on other sites More sharing options...
forteh Posted September 16, 2009 Report Share Posted September 16, 2009 You cant get 18t chainrings for 4 or 5 bolt cranks, your only option is to get some cranks that accept screw on/front freewheel or some burns with a TNN or heatsink bash. Cheaper to just use a larger rear sprocket Quote Link to comment Share on other sites More sharing options...
BringThatShtIn Posted September 16, 2009 Author Report Share Posted September 16, 2009 Your only option is to get some cranks that accept screw on/front freewheelAny ideas as to good ones?Chances are, I'll just use a bigger cog at the back, but I'm just considering my options Quote Link to comment Share on other sites More sharing options...
forteh Posted September 16, 2009 Report Share Posted September 16, 2009 Any ideas as to good ones?Chances are, I'll just use a bigger cog at the back, but I'm just considering my options Tryalls are very popular on here, if you cant stretch to the cost then the trialtech or echo forged are also popular, all of them are threaded. Middleburns can come up cheap on here but you will likely need to spend some extra money getting the right bashring, imho burns are the best cranks you can get, lighter than any other cranks, strong and a lifetime warrenty Quote Link to comment Share on other sites More sharing options...
BringThatShtIn Posted September 16, 2009 Author Report Share Posted September 16, 2009 Middleburns can come up cheap on here but you will likely need to spend some extra money getting the right bashring, imho burns are the best cranks you can get, lighter than any other cranks, strong and a lifetime warrenty What's wrong with a normal bashring (like an Echo Urban or Neon Light, the two I like most lol) with Middleburns? What's different about Middleburns? Quote Link to comment Share on other sites More sharing options...
CurtisRider Posted September 16, 2009 Report Share Posted September 16, 2009 What's wrong with a normal bashring (like an Echo Urban or Neon Light, the two I like most lol) with Middleburns? What's different about Middleburns?middleburns have a splined interface, rather than a screw on system Quote Link to comment Share on other sites More sharing options...
forteh Posted September 16, 2009 Report Share Posted September 16, 2009 (edited) What's wrong with a normal bashring (like an Echo Urban or Neon Light, the two I like most lol) with Middleburns? What's different about Middleburns?Middleburns have a spline interface between the crank and the chainring, you can only fit chainrings designed for the cranks. The standard middleburn pro trials ring is 20t or 22t, they do a super pro trials which is 16t (older ones were titanium, newer ones are steel). Heatsink do the 18t cloud9 bash and ring; TNN do the 18t and 16t in steel and also a 16t in aluminium. You cant use a normal bashring at all.There is rumour of middleburn now prototyping a screw on version of the RS7's, I believe tarty adam might know more..... edit: dammit too slow Edited September 16, 2009 by forteh Quote Link to comment Share on other sites More sharing options...
BringThatShtIn Posted September 17, 2009 Author Report Share Posted September 17, 2009 This may sound sort of noobish, but is the freewheel an alternative to a chainring? Is that what you're saying?So I'd just need a freewheel, cranks that fit it and a bashring (and BB)?Thanks for the info so far Quote Link to comment Share on other sites More sharing options...
LordMersey Posted September 17, 2009 Report Share Posted September 17, 2009 18:15 is about the same as 22:18 Quote Link to comment Share on other sites More sharing options...
BringThatShtIn Posted September 17, 2009 Author Report Share Posted September 17, 2009 18:15 is about the same as 22:18Yes. I know.Like I said, I'm considering my options. Quote Link to comment Share on other sites More sharing options...
forteh Posted September 17, 2009 Report Share Posted September 17, 2009 (edited) This may sound sort of noobish, but is the freewheel an alternative to a chainring? Is that what you're saying?So I'd just need a freewheel, cranks that fit it and a bashring (and BB)?Thanks for the info so far Freewheels can be mounted at the back (using a screw on fixed hub) or more commonly on the front (using screw on cranks - 90% of trials cranks are screw on). If you have a rear freehub (like a hope proII or a chris king) then you need a fixed front sprocket, this would just be a screw on sprocket (unless you have middleburns). If you have a fixed rear hub then you need front freewheel.The main advantage of the smaller gear ratio (18:15) is that you can save alot of weight by using smaller sprockets and shorter chain, however unless you have the spare cash to spunk on a new set of cranks then its not really worth it.Im assuming you already have a freehub on the back, your cheapest option would be to run 22:18, next would be to get some screw on cranks with a screw on sprocket. To go front freewheel you would need new cranks, rear hub+sprocket and a freewheel. Edited September 17, 2009 by forteh Quote Link to comment Share on other sites More sharing options...
BringThatShtIn Posted September 18, 2009 Author Report Share Posted September 18, 2009 Im assuming you already have a freehub on the back, your cheapest option would be to run 22:18, next would be to get some screw on cranks with a screw on sprocket. To go front freewheel you would need new cranks, rear hub+sprocket and a freewheel.Ah. Maybe I'll just wait until my next bike lol.How is 22:19? Since I already have a spare 19t cog. Quote Link to comment Share on other sites More sharing options...
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