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BMX Style Crank conversion on Redline Monocogger...
... thinking about it, any recommendos on a system?
Thanks
Ride da Shiftless One my Son...
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The gusset pigmy (sic) 853 looks promising. In the end, though, there are lighter options that are plenty strong and more versatile (middleburns). I like the idea of 25t chainrings.
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Anything with a "Euro" bottom bracket.
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 Originally Posted by buddhak
The gusset pigmy (sic) 853 looks promising. In the end, though, there are lighter options that are plenty strong and more versatile (middleburns). I like the idea of 25t chainrings.
Yes, facts I agree: Stronger, 25t c-rings are really cool...
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unlike a bmx bike, you're going to spend a lot of time putting a LOT of torque on the drivetrain. so a 25t sprocket is not a great idea. the load is spread over a smaller number of teeth, causing them to wear out faster. you would also need a tiny cog on your rear wheel, which might be impossible to find.
you can't go wrong with Profile Race cranks, maybe even with some ti bits. Get a Tree sprocket too, I think they still make them in 33t.
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mtbr member
Reputation:
The euro bottom bracket will prove a problem. Big spindle, tiny bearings. They are prone to wearing out quickly in MTB applications.
Consider a BMX crank with external bearings:
Profile Racing E-Store
Or
Hot Rod Cranks
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^agreed. many companies put "euro" bottom brackets on freestyle bikes for a few short years, then abandoned the idea. a 19mm spindle, or 22mm spindle on some cranks, does not leave enough room for sizable bearings in the frame. get something with an external BB cup design. Profiles with an external BB is going to be one of your few choices.
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And getting a 4 or 5-arm bolt-on spider can add versatility in terms of gearing.
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And we've come full circle to Middleburns. Or profiles for those who don't mind the weight. The Hot Rods are so damn sweet, but exist in the far reaches of the blingosphere. I certainly can't afford them...
@Mack_Turtle - chainrings and cogs aren't terribly expensive. Drivetrain wear issues loom larger in theory than in practice. At least for me, the gains in clearance overwhelm the losses in cog longevity. Now chainwrap issues are a real concern. If you have a push down tensioner set-up, the microdrive won't cut the mustard.
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Profiles with outboard bearings and a Rennen sprocket.
Worked at Trek/Fisher dealer 2008-2013. Only a little biased.
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