mason
Part of things
Posts: 601
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have thrown this together as a bit of a fun/winter/local bike  my local trail is llandeglla and I don't often need the big or the granny ring round here so I ditched them. the chain now comes off sometimes when the going gets rough, so its time for a chain guide  |
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Last Edit: Nov 6, 2009 12:24:22 GMT by mason
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mason
Part of things
Posts: 601
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starting with a bit of fairly decent alloy plate out of the scrap bin at work,bit of time with a saw and file nets this  |
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mason
Part of things
Posts: 601
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i have a bit of bronze bar stock to make the spacers/chain rubs .
going to do some drilling and tapping and see how i get on.
this is the mk1 so i have purposely made it on the hefty side in case things need chopping and changing around
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eddbmxdude
Part of things
Yeah, its a turbo!
Posts: 524
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Nice! I bought a DMR one and they are a rip off, AND my chain rubs like a barstard on it!
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Old skool cool!
Signature image maximum height: 80 pixels
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mason
Part of things
Posts: 601
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i was looking at the mrp one for the 1x9 and that was £40  the one thing that may be an issue is the noise,but that maybe adressed in the mk2 as nylon blocks sometimes thier way into the skip also ;D |
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Dez
Club Retro Rides Member
And I won't sit down. And I won't shut up. And most of all I will not grow up.
Posts: 11,790
Club RR Member Number: 34
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mtb 1x9 chain guideDez
@dez
Club Retro Rides Member 34
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i think youll find your biggest problem is like 90% of bikes, your chain is too long. you mech should be at almost full stretch with the chain on the biggest irng combo. cos youve removed the outer ring, its now miles too long. if you shorten the chain the mech can then work properly to tension it better.
i actually really rate dmr chain devices. i run a chaincage and its certainly the best one ive ever run, its simple, it works, it doesnt rub, and is robust..
but then i run bmx cranks and ring so a lot wont fit. you have to be very particular about how they're set up, and make sure youve got the basic of chainline, chain tension etc. correct first, then bin the black plastic bits and replace with washers/spacers, and its quite easy to get it set up perfect so you can use the whole block without it rubbing.
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mason
Part of things
Posts: 601
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Dez, i have already shortened the chain, which did improve but not solve my problem. one big prob i think is the chainwheel teeth are ramped to aid shifting, exactly what i don't want. are you using a 9speed on the back and bmx ring on the front? any probs with chain width? cheers for the imput fellas mason |
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