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The twin-chain beast...  RSS Feed

#1 2008-12-20 6:55am

Faust Wurstkotzenhauser
Pro MemberR.I.P.
From: Big Gay Squirrel
Registered: 2008-09-04
Posts: 6615

The twin-chain beast...

I've been collecting parts for this build for a while... I've always wondered what it would be like to have a bike with twin drivetrain.

tonight I got the drivetrain set up.

I used the wheel from a Haro Mirra, which has RHD and LHD threads on the hub... got two matched 16t ACS Fat freewheels LHD/RHD and used Snafu cranks with matching Volume 44t chainrings. Setting the back wheel is really easy! Just pull back until both chains are tight! LOL!

http://www.deanguitars.tv/userpics/lib9/Herc1.jpg

http://www.deanguitars.tv/userpics/lib9/Herc2.jpg

The freewheels sound cool... two of them running in stereo just slightly out of phase makes it sound smooth! It's like a twin-engine airplane. I'm going to spray out the freewheels with WD40 to make them as loud as possible!

This bike weighs a ton! It's like a boat anchor! ... and it's bisexual... I mean bilaterally symmetrical...


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#2 2008-12-20 6:58am

That70'sGuy
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From: Illinois
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Re: The twin-chain beast...

looks like a dragster


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#3 2008-12-20 6:58am

1pccrank
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From: Indiana
Registered: 2008-03-28
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Re: The twin-chain beast...

That is great!


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#4 2008-12-20 6:59am

jay brand
Pro MemberHomeless Bikes Nut
From: Springfield, MO
Registered: 2008-07-27
Posts: 4026
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Re: The twin-chain beast...

That beast need's a bash guard now Faust. lol


The devil said "Scratch my back and I'll scratch your back for sure"

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#5 2008-12-20 7:00am

Motleymick
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From: Vegas
Registered: 2008-11-29
Posts: 1826

Re: The twin-chain beast...

That's tight!! I've always thought about doing that. How does it ride? Does it feel any different than one chain? Next you should do a 2 wheel drive bike and have one sprocket go to the front wheel. lol


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#6 2008-12-20 7:02am

honda1wheel
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From: Midwest City, OK
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Re: The twin-chain beast...

i need those pedals sweet build man


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#7 2008-12-20 7:03am

Faust Wurstkotzenhauser
Pro MemberR.I.P.
From: Big Gay Squirrel
Registered: 2008-09-04
Posts: 6615

Re: The twin-chain beast...

Motleymick wrote:

That's tight!! I've always thought about doing that. How does it ride? Does it feel any different than one chain? Next you should do a 2 wheel drive bike and have one sprocket go to the front wheel. lol

I haven't ridden it yet... I'm going to take it out on the ice this morning when the sun comes out...

I've just been spinning the cranks with my hand and listening to the freewheels... wow...

There's definitely a lot of resistance in the drivetrain... this thing is far from efficient! LOL!

I want to put a banana seat on it... I need to find a sissy-bar that will bolt on to a 14mm axle...


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#8 2008-12-20 7:04am

jay brand
Pro MemberHomeless Bikes Nut
From: Springfield, MO
Registered: 2008-07-27
Posts: 4026
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Re: The twin-chain beast...

If you are going with a sissy bar you had better get some ape hangers for it.


The devil said "Scratch my back and I'll scratch your back for sure"

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#9 2008-12-20 7:11am

Faust Wurstkotzenhauser
Pro MemberR.I.P.
From: Big Gay Squirrel
Registered: 2008-09-04
Posts: 6615

Re: The twin-chain beast...

http://www.deanguitars.tv/userpics/lib9/Herc3.jpg

I cannibalized the fork, wheels and seatpost clamp from a Haro Mirra. I got the frame from Mark at TNT... according to him, this frame was part of an order that they made for Eastern and the frames never got picked up. The frame looks like a hybrid of a S&M War Pig and a TNT Groundskeeper. The headtube pierces the top and downtube... sort of like a Menstrual... it's a really burly frame and it's built laser-straight! I'd expect nothing less from TNT! The pedals are Brooklyn Shinburgers.... bars are Bully Nudie bars...

I just need to get the brakes set up and it's good to go... until I find that banana seat and sissy bar!

here's the full size pic:

http://www.deanguitars.tv/userpics/lib9/Herc3.jpg

Last edited by Faust Wurstkotzenhauser (2008-12-20 7:13am)


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#10 2008-12-20 7:12am

mattygaff
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From: VA
Registered: 2008-01-20
Posts: 1077
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Re: The twin-chain beast...

I think that is super cool!  Good engineering, too.  Can you get a video of it crankin with sound and post it up?


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#11 2008-12-20 7:19am

monkey72
Intermediate
From: London born.. now corby living
Registered: 2008-06-24
Posts: 294
Bikes: 3

Re: The twin-chain beast...

that looks so cool... i want one but not so burly lol


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#12 2008-12-20 7:19am

caleb_k31
BMXer 4 Life
From: Milwaukee, WI
Registered: 2006-04-07
Posts: 6884
Bikes: 15

Re: The twin-chain beast...

thats nice.  so do some bike only have the sprocket on the left side??? like the bike you got that hub off, you could put the crank on either side?  where did you get the left drive freewheel from?   

im sure the sound affect is awesome..


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#13 2008-12-20 7:21am

oldschoolpete
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From: New Jersey
Registered: 2008-05-04
Posts: 400
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Re: The twin-chain beast...

reminds me of the old clem twins setup.... definately cool!!


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#14 2008-12-20 7:25am

stillinthegame
Pro MemberDan's Comp
From: Southern Indiana
Registered: 2007-09-17
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Re: The twin-chain beast...

i actually did the same thing with a hoffman hub (i call it a flop-flop), it was small thead rhd and lhd, so i used two 13t freewheels and 2 profile imperial chainwheels. looks cool as heck, wish i had kept the setup


I want to apoligize in advance for not reading the entire thread or doing any research whatsoever before i post my comments.

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#15 2008-12-20 7:27am

Faust Wurstkotzenhauser
Pro MemberR.I.P.
From: Big Gay Squirrel
Registered: 2008-09-04
Posts: 6615

Re: The twin-chain beast...

caleb_k21 wrote:

thats nice.  so do some bike only have the sprocket on the left side??? like the bike you got that hub off, you could put the crank on either side?  where did you get the left drive freewheel from?   

im sure the sound affect is awesome..

The back wheel came from a Haro bike that was LHD with a ACS Fat Claws "southpaw" freewheel. The hub also has threads on the right side for a normal freewheel so I matched it with a RHD ACS Fat Freewheel. I also matched the chainrings and the chains to keep the tolerances as close as possible. The Snafu cranks have chainring bolts on both arms...

I'll try to get a video clip of the wheel spinning with decent sound... wish me luck.


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#16 2008-12-20 7:30am

Faust Wurstkotzenhauser
Pro MemberR.I.P.
From: Big Gay Squirrel
Registered: 2008-09-04
Posts: 6615

Re: The twin-chain beast...

stillinthegame wrote:

i actually did the same thing with a hoffman hub (i call it a flop-flop), it was small thead rhd and lhd, so i used two 13t freewheels and 2 profile imperial chainwheels. looks cool as heck, wish i had kept the setup

I wanted to go smaller with the chairings and freewheels, but this hub only takes the standard sized freewheels on both sides... I wanted it to have a pair of 36t S&M chainrings and 13t freewheels... I don't mind though, the 44t Volume chainrings look boss as hell on it.


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#17 2008-12-20 7:55am

stillinthegame
Pro MemberDan's Comp
From: Southern Indiana
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Re: The twin-chain beast...

twin drivetrains and fat squirrels are awesome


I want to apoligize in advance for not reading the entire thread or doing any research whatsoever before i post my comments.

DANSCOMP resident Old School Guru

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#18 2008-12-20 7:59am

caleb_k31
BMXer 4 Life
From: Milwaukee, WI
Registered: 2006-04-07
Posts: 6884
Bikes: 15

Re: The twin-chain beast...

ok cool, i had a haro crank with a bolt hole on both arms for a sprocket..  i just never seen a bike with a left drive. well besides the double witch u did..


WILL NOT DEAL WITH LIST 619-bmx, Boyd, NickWG19, quadsticher, Djrothus, cgeorge715, bob70, sharkbite, Luke Sears ebay name bmxbrigade.

GT fork stander spring install - http://bmxmuseum.com/forums/viewtopic.php?id=426565
PFT restoration thread - http://bmxmuseum.com/forums/viewtopic.p … 50&p=1
epoch headset, freestyle vs. race - http://bmxmuseum.com/forums/viewtopic.p … 7#p4233077

All the hub/hoop measuring info you will need along with spoke calculation info http://bmxmuseum.com/forums/viewtopic.p … 9#p5435389

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#19 2008-12-20 8:04am

freedo
Pro MemberWhite Boy With An Afro
From: wilmington de
Registered: 2008-06-17
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Re: The twin-chain beast...

thats cool


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#20 2008-12-20 8:08am

oldmetal
Pro Member*Thread Killer-And Proud*
From: UK
Registered: 2007-10-02
Posts: 1070
Bikes: 1

Re: The twin-chain beast...

That looks great.
It just got me thinking, could it be done on an MTB and what if you put a gear cassette on each side - could you ride a bike that was in two different gears at the same time?
The only downside is you now have two places to catch loose clothing lol

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#21 2008-12-20 8:11am

Faust Wurstkotzenhauser
Pro MemberR.I.P.
From: Big Gay Squirrel
Registered: 2008-09-04
Posts: 6615

Re: The twin-chain beast...

oldmetal wrote:

That looks great.
It just got me thinking, could it be done on an MTB and what if you put a gear cassette on each side - could you ride a bike that was in two different gears at the same time?

The gears have to be matched. I went so far as to use identical parts so that there would be no mismatch between sides... otherwise it would bind up and want to skip teeth... shifting would be a mofo to pull off because both derailleurs would have to be synchronized... but I guess anything is possible...


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#22 2008-12-20 8:12am

TODD74
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From: Cleveland, OH
Registered: 2007-11-27
Posts: 1976
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Re: The twin-chain beast...

thats a first for me! sweet looking!


IF IT HAS SPOKES,I'LL DRIVE IT

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#23 2008-12-20 8:21am

oldmetal
Pro Member*Thread Killer-And Proud*
From: UK
Registered: 2007-10-02
Posts: 1070
Bikes: 1

Re: The twin-chain beast...

Faust Wurstkotzenhauser wrote:

The gears have to be matched. I went so far as to use identical parts so that there would be no mismatch between sides... otherwise it would bind up and want to skip teeth... shifting would be a mofo to pull off because both derailleurs would have to be synchronized... but I guess anything is possible...

I see now, it would be trying to turn each side of the wheel at different speeds. I wouldn't like to try shifting at high speed.
Maybe a single shifter and cable that splits into two cables, both derailleurs would need to be set up precisely though (and stay precise) otherwise it could be dangerous. Ah well, I'll maybe shelve that idea lol

Looks great on your bike though, and it would be cool to see a 26" cruiser or singlespeed with the setup.

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#24 2008-12-20 8:23am

S&M4Life
AKA Custom05BacktrailX2
From: Pittsburgh, PA
Registered: 2007-07-20
Posts: 1077
Bikes: 2

Re: The twin-chain beast...

lol lol lol I opened this up and started laughing. It looks so AWSOME. I've thought about doing this before but I didn't think it would work because the left side of he frame doesn't have the indents in the frame like the right side does to keep the sprocket from killing the frame. Put up a video it looks so freaking sweet. I might have to try this one day because I have a alex triple wall with a dk hub that you can use either lhd or rhd


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#25 2008-12-20 8:46am

Blown04GT
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From: Raleigh, NC
Registered: 2008-04-21
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Re: The twin-chain beast...

That's awesome Ian!!!!!  Can't wait to see a vid of that beast!!!


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