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Homemade Chain Tensinor


Saracen Kid

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iam going single speed soon (Y) . But i need a chain tensioner!! but don't want to buy one (as saracen rider would say 'you cheap skate' :P ) Anyhoo people like pete (wright pads) have a tensiner made from a mech. But as pete has a chris king hub he has £35 fun bolts! i have a cheap shimano hub so how do i make cheap chain tensoner from a rear mech.

thanks guys (Y)

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Ermmm what the f**k are you going on about and me???

I run a frsh products tensioner now and i have round my Fun Bolt down a bit for it all to fit!

I just used a normal mech that i locked out on a normal hanger....well i did when i had hanger then i had a make shift hanger like whats on old school shimano stuff, SIS with is bolted to the frame and axle and the mech bolts to that! Only cos i got a box of them and didn;t wana pay the £15 for a new mech hnager!

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Have we met?

I have ran once where i had a bolt made that was super long, removed the std bolt off the mech and had it all in one directly oin my frames dropout but it was a bodge so we could bugga off to spain when i live back home on Bristol!

If you looked or look closer at my old bike you'll see it has a sliver bracket there

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you one lucky sod as i cleaned my folder up the other day and though i'd gotten shot of these. As i said i no longer ride this bike at all what so ever a si have my new one!

Eit: made a bobo doubble html coding...twat!!!

thanks pete i see now

now lets all get back on topic how do you make a chain tensoner

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You might be lucky enough to be able to adjust the two limit screws on the side of the mech until the jockey wheels line up with the rear cog you want to use. I found that the screws didn't quite push the mech over far enough so I -

cut down a spoke (about 80mm) and placed a nipple on the end the wrong way around (you can use a short piece of gear cable instead)

pushed my mech over by hand until the jockey wheels lined up with the rear cog (you may wish to add a mate at this point)

placed the spoke (or short gear cable) through where a cable usually goes with the nipple resting on the plastic barrel adjuster

tigthened the spoke up using the cable clamp bolt

pedalled backwards to check that the chain ran in a striaght line

adjusted the allignment further by using the plastic barrel adjustment

If you want to stop the mech moving up and down and hitting your chainstay-

remove mech/chain from bike

remove the c shaped clip from the back of the mech-it may need turning a little before it will slide out (I placed a thin screwdriver in the gap between the bolt and clip to rotate it and remove it)

remove the spring that will probably fly out

replace c clip

you may need to add a large washer over the bolt and c clip to allow the mech to be tightened properly

replace mech and chain

you could just cable tie your mech to the frame but I found that removing the spring produced a much more stable tension and the cable tie may break off...

please tell me if i am being unclear

Edited by huge
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