"Sexiest" Singlespeed FR/DH Bike Thread. (What and How-To included)

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"Sexiest" Singlespeed FR/DH Bike Thread. (What and How-To included)
Author Message
flag Joebohobo
Posted: Mar 1, 2021 at 15:29 Quote
mrfrench2013 wrote:
After riding with a modified Sram GX derailleur last year I'm jumping to a dedicated tensioner (basically because it looks cooler, its german, and its 2 ounces lighter woohoo). As for the set up, is the consensus to run the chain as tight as possible so that the idler pulleys are inline with the chain (such as the NS just posted above) or do I set the chain length to the point where it just puts the idlers under tension and the tensioner is in more of a traditional derailleur cage position? Ive seen both here but not much talk about it and the benefits of cons/benefits of either.

Chain tension: compress bike fully, then run the chain as short as it will go at that point (allowing for a slight bit of extra growth due to flex)
flag naptime
Posted: Mar 1, 2021 at 20:26 Quote
As above, push the bike through it travel to find max chain stay length, and add a link. I wouldn't run the chain super tight as 1, this will strain the tensioner 2. An extra link or 2 will free up suss travel.
These little things are bloody good, I run 2 extra links in my chain an it runs silent! An i swear its even improved the rear suss
flag mrfrench2013
Posted: Mar 2, 2021 at 4:34 Quote
Thanks guys Ill give that a go! Good to hear that your satisfied with it, I was a bit nervous about getting one without a clutch.
flag Blablablup123
Posted: Mar 2, 2021 at 11:08 Quote
mrfrench2013 wrote:
After riding with a modified Sram GX derailleur last year I'm jumping to a dedicated tensioner (basically because it looks cooler, its german, and its 2 ounces lighter woohoo). As for the set up, is the consensus to run the chain as tight as possible so that the idler pulleys are inline with the chain (such as the NS just posted above) or do I set the chain length to the point where it just puts the idlers under tension and the tensioner is in more of a traditional derailleur cage position? Ive seen both here but not much talk about it and the benefits of cons/benefits of either.
photo

Take the spring/ air out of your shock, compress the suspension, and then check the chain length. On most frames the chain stay length grows at first, and then shrinks again, so make sure that there are no problems anywhere in the travel.
flag kylar
O+
Posted: Mar 2, 2021 at 17:58 Quote
photo

photo

Probably gonna be a whole lot sexier after I paint it, but I wanted to see if it worked for me first. Probably one of the more overcomplicated conversions out there! But it does manage no derailleur/tensioner.
flag Blablablup123
Posted: Mar 3, 2021 at 3:23 Quote
kylar wrote:
photo

photo

Probably gonna be a whole lot sexier after I paint it, but I wanted to see if it worked for me first. Probably one of the more overcomplicated conversions out there! But it does manage no derailleur/tensioner.

Absolutely brilliant. If I had the means to do that myself, I'd do it in a heart beat.
flag naptime
Posted: Mar 3, 2021 at 4:10 Quote
is that a freewheel on the high pivot?
flag mrfrench2013
Posted: Mar 3, 2021 at 4:38 Quote
thats fantastic, brilliant idea!!! Should go in the home made parts thread too.
flag kylar
O+
Posted: Mar 3, 2021 at 7:44 Quote
Thanks everyone! I am real happy about how it turned out! I wasn’t sure of the gear ratio but it turned out to be a good one to sprint into jumps and whatnot.

@nojzilla Yes, it’s a two speed BMX freewheel with one of the cogs flipped around to give space for both chains, and the pawls removed. I found an aluminum threaded carrier on some Chinese ebike site to mount on the jack shaft I fitted inside the pivot.
flag Jonnysnow
Posted: Mar 3, 2021 at 13:25 Quote
That's really impressive, super tidy job!
flag spaceofades
O+
Posted: Mar 8, 2021 at 19:52 Quote
Building up a park bike. Anybody have experience with the G3C as well as the Boner?
How quiet does the boner run without a clutch? I'd be a lot happier spending less money, but I'm willing to pay for a quiet bike...
flag naptime
Posted: Mar 8, 2021 at 20:27 Quote
I have the boner (non clutch) on my Supreme and although pricey its bloody amazing at what it does, bike is now silent from chain noise. Although there is no clutch the spring is bloody strong! And the adjustments are 3 way so, perfect tension and alignment. I set my chain up a bit longer than I could've as to free up the travel an I swear it has improved the suss...
Definitely worth the price
flag b-mack
Posted: Mar 12, 2021 at 17:24 Quote
Id say that the G3 with the clutch is more intended to run without a chainguide where the Boner is going to require a guide to keep everything on. As far as quietness they should be the same. Even my Rohloff tensioner with a chainguide is silent without any clutch. Quote="spaceofades"]Building up a park bike. Anybody have experience with the G3C as well as the Boner?
How quiet does the boner run without a clutch? I'd be a lot happier spending less money, but I'm willing to pay for a quiet bike...[/Quote]
flag naptime
Posted: Mar 12, 2021 at 22:12 Quote
I'm running my boner set up, no guide. Just a bash ring an just a regular Zee ring.
Chain hasn't dropped once.
The retention spring is that strong

 


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