So I Need Tensioner

[Rampager]

I jsut rigged up my first SS. I butchered a cassette and cut some pipe and now im super happy with how it came out :) Anyway, i need ideas on how to rig up a tensioner. Im pretty crafty, lots of spare shit lying around and i got all the tools. I just need ideas. I dont really wanna cut up a deraileur either...

[Rampager]

I dont have any more room to host pics :(

[skimtb1]

links out of chain?

[Nelson]

axiom no-railleur is like $25...

[IFO]

do it total ghetto... its cheap as hell and works...

what u do is attach a couple of zap-straps around your chainstay... then slide a couple of zap straps throu your chain and around the zap's attached to your chain stay...

u can tension the zaps around your chain till u get the tension u need...

this actualyl works quite well.. but obviously its total ghetto looking...

give it a try, you'll be amazed at how well it works...

a slightly more expensve way that also works is to use a chain device bogeywheel instead of zap's around your chain... then attach the bogeywheel to the zap's on your frame with another zap and instant chain device...

hope that helps...

[Rampager]

It wont fit if i take out a full link. Do you really think i hadnt tried that?

[PegCityThrasher]

I run a no-railler and it's been pretty consistent. Other than the fact that I've twisted mine all to shit from street abuse. If you tiretap driveside, make sure you hit the tire and not the chainstay ;) But if you're serious about the SS thing and have a little more cash look into the Rennen Designs Rollenlager. http://www.rennendesigngroup.com/rollen_info.html
It bolts up at the der. mount AND the axle, and isnt spring tensioned. Set it and forget it. And it's silent b/c it uses a chain device roller wheel instead of a derailleur pulley. Mind you, on the site it's only 50 USD which is cheaper than a Surly Singulator which is essentially the same as the Axiom.

[baloom]

rohloff makes 2 most excellent tensioners that are virtually indestructible (typical teutonic engineering....). One has a longer throw with a slighter weaker spring, the other has a very short throw and a strong spring....both bolt into the derailleur hanger....you can contact Rohloff.com or extremesportsgroup.com for this.

[PegCityThrasher]

Unfortunately like most things German and expertly designed, you will have to break the bank on it. That Rohloff is over 200, I think, for a far more fragile design than even the No-Railleur. It's spring tensioned which makes it more appropriate to a DH bike that experiences chaingrowth and which won't see a lot of bashing. A HT with a singlespeed conversion is better suited to something less complicated because A) So much tech is unnecessary and B) It won't be durable enough. I know, If I ran that Rohloff on my bike and subjected it to the same abuse, it would have broken a long time ago. That Rohloff is eesentially a derailleur without the ability to tension, so for what it's worth concerning that kind of tensioner, he might as well keep hes geared setup and just not shift.

[switch]

A hacked up old derailleur would work; cut off most of the derailleur cage and use one jockey wheel to provide the tensioning.

Even better would be a TonyG chain guide. :thepimp:

[baloom]

Originally posted by PegCityThrasher
Unfortunately like most things German and expertly designed, you will have to break the bank on it. That Rohloff is over 200

"was ist los" You are right; German stuff is pricey but it is also impeccably made and does what it is intended to do. The price from Freeridehubs.com is $90 Canadian and they are listed on the Rohloff Usa website for under 50. Yes, still expensive, but not 200 expensive.


Originally posted by PegCityThrasher
That Rohloff is eesentially a derailleur without the ability to tension,

Whaaa?? Both Rohloff tensioners have humungoid heavy springs in them which serve to apply tension to the chain......hence the name "tensioner". I have one on my Bullit and it works great. I have used it for 1.5 years without flaw which is about 1.2 years longer than any derailleur ever lasted me. It is the tensioner presently used by such hacks as Tyler Klassen, and Dan Cowan's Flow riders. I'm sure they only use it because they are sponsored....

G:\My Pictures\mountain bike pictures\New Folder\Rohloff_dh_chain_tensioner.jpeg

[switch]

Originally posted by baloom
G:\My Pictures\mountain bike pictures\New Folder\Rohloff_dh_chain_tensioner.jpeg

:nerd:

[XXX_er]

i seen a cool one made by the guys at simple minds technology or something like that but I can't find a web site.They were from Oregon or washington

the chain snakes around 2 jockey wheels on a piece of aluminium hanging off the rear axle.The good thing about it is that it doesnt hang out there lfrom the deraillier hanger ,its totaly inboard and out of the way

[Rampager]

I need help with another thing.... :???: :???: :???:


The attached pic is my rear hub. Im re-building my doubletrack tomorrow, thats why its not laced. As you can see, i have pieces of pipe acting as spacers, with my 16 tooth in the middle. So i thread on the metal threaded circle like thing that threads into the hub body (geeze thats a lot of threads), but i have no clue how tight to make it. How does this affect how the wheels spins? How does it affect the tightness of the hub? Ive just been tightening/loosening it with a pair of pliers. Help please.

[switch]

On a regular cassette, that locking screw/nut tightens up against the smallest cog and doesn't unscrew. If you think it will loosen on you I suppose you could get real ghetto by trimming down the outside spacer and using a small cog on the outside to lock against. :S

Check this (http://www.jensonusa.com/store/product.aspx?i=CS611B00) out. It's pretty much what you've done, so I suppose you shouldn't have a problem.

[GRIZZ]

you can buy one, dmr or surley or whoe evr else makes em...dmr is overpriced and not the greatest, if you can work the surley rite it will take a beating and still keep going just have to bend it till it is rite at the frame..or as i have seen on a few bikes...they make a backet, attach it to the derailer hanger, put a roller on the end, slide the roller down and tighten it when the chain is tight

[GRIZZ]

for your other problem cut down the one spacer or useyour cassette spacers and make it so you can use the part from your cog that tightens up to keep it all together