Twin rear wheel sprockets...

[FuNMoNsTeR]

I need to build a rear wheel with 2 sprockets.... Will this work if i use a flip flop hub?

[snav69]

Not sure Andy 
maybe this would be easier 
http://cgi.ebay.com/TOP-suntour-back-crank-bmx-racing-parts-NOS-old-school_W0QQitemZ120210509450QQihZ002QQcategoryZ64644QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

 

[kdw712]

i thought flip flop allowed smaller drives on one to the other

so you have 16t and 15t - not good

sure DK did a hub for this - like the old clem twin drive

[kdw712]

think this is it

http://www.danscomp.com/426019.php?cat=PARTS

[poolysheriff]

Not sure Andy 
maybe this would be easier 
http://cgi.ebay.com/TOP-suntour-back-crank-bmx-racing-parts-NOS-old-school_W0QQitemZ120210509450QQihZ002QQcategoryZ64644QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

 

I,ve got 1 of these if you want it andy 

[FuNMoNsTeR]

Thanks guys.... but that sprocket wont work 

My mad mate Warren saw my pics of the Clemtwin system and insists he wants to build a Clemtwin esc setup. Possibly to go on his Crazy Goose. Crank arms are not a problem.
  I just figured the problem with a flip flop hub.... As you pedal it would undo one of the sprockets so some rethreading would be in order??
 

[FuNMoNsTeR]

think this is it

http://www.danscomp.com/426019.php?cat=PARTS

Cheers m8....That would work.... 14mm axle though 

[HEYWOOD BMX]

  Haro used to do  a LSD/RHD flip flop 14mm hub.I had one,got it from Shitestanleys.....

[MartyC]

think this is it

http://www.danscomp.com/426019.php?cat=PARTS

Cheers m8....That would work.... 14mm axle though 

Just a thought but it has sealed bearings so you could see if you could get bearings with a smaller inside diameter to replace the stock ones or get shims made up to reduce the axle down to 3/8" or 10mm and put a different axle in 

[FuNMoNsTeR]

think this is it

http://www.danscomp.com/426019.php?cat=PARTS

Cheers m8....That would work.... 14mm axle though 

Just a thought but it has sealed bearings so you could see if you could get bearings with a smaller inside diameter to replace the stock ones or get shims made up to reduce the axle down to 3/8" or 10mm and put a different axle in 

I wondered that too..... thanks m8. 

[TwoBobRob]

I feel really stupid now.

I always thought that a flip flop hub was built so you just screw on two different sized ordinary freewheels.  Then, at the racetrack if you need to change your gearing quickly, all you do is whip your back wheel out and turn it around.   

[FuNMoNsTeR]

I feel really stupid now.

I always thought that a flip flop hub was built so you just screw on two different sized ordinary freewheels.  Then, at the racetrack if you need to change your gearing quickly, all you do is whip your back wheel out and turn it around.   

Me too 

[MartyC]

I feel really stupid now.

I always thought that a flip flop hub was built so you just screw on two different sized ordinary freewheels.  Then, at the racetrack if you need to change your gearing quickly, all you do is whip your back wheel out and turn it around.   

Me too 

You mean its not?  The l/h side is a regular freewheel but smaller not a l/h drive so you do just that, whip it out and switch it over 

[FuNMoNsTeR]

I feel really stupid now.

I always thought that a flip flop hub was built so you just screw on two different sized ordinary freewheels.  Then, at the racetrack if you need to change your gearing quickly, all you do is whip your back wheel out and turn it around.   

Me too 

You mean its not?  The l/h side is a regular freewheel but smaller not a l/h drive so you do just that, whip it out and switch it over 

Thanks for clearing that up m8

See Rob...we are not stupid after all   

Just victims of substance abuse 

[TwoBobRob]

Woohoo!!!!  I knew it!!!

I knew the teachers were wrong..........   

[kdw712]

if you cant easily change the axle in the DK you could always machine / file some flats on its only a couple of mm each side

then all  you need is two drive sides for the crank and your there

not that i've thought about this much 


crap pic but you can just make it out

[MartyC]

if you cant easily change the axle in the DK you could always machine / file some flats on its only a couple of mm each side

then all  you need is two drive sides for the crank and your there

Great idea, didn't think about doing that at all - it would totally work 

[Frosty]

here's some more pics I had snaffled from bmxm a while ago

[FuNMoNsTeR]

if you cant easily change the axle in the DK you could always machine / file some flats on its only a couple of mm each side

then all  you need is two drive sides for the crank and your there

not that i've thought about this much 


crap pic but you can just make it out

N1 m8....that would work a treat... I have the arms sorted already 

I missed a set of Profile twin drive cranks on US eBay last summer...they went for less than $300 and i was skint

[kdw712]

i don't know if they gave any real benefit at all

but it sure looks a sweet set up with dual drive   

[Frosty]

Yeh Kev, looks sweet but I bet it was an arse to set up. I can't imagine that the wear would have been even on each side either

[kdw712]

 

you'll slowly start going in circles   

[kdw712]

just noticed that winstanleys sells the DK hub as well

http://www.winstanleysbmx.com/?pageTitle=DK%20Dual%20Drive%20Rear%20Hub&action=detail&maincatID=0&catID=&prodID=3992&brandID=

[billstup]

Thanks guys.... but that sprocket wont work 

My mad mate Warren saw my pics of the Clemtwin system and insists he wants to build a Clemtwin esc setup. Possibly to go on his Crazy Goose. Crank arms are not a problem.
  I just figured the problem with a flip flop hub.... As you pedal it would undo one of the sprockets so some rethreading would be in order??
 

The left hand one wouldn`t undo, it would just freewheel like if you were pedaling backwards on a normal freewheel, it would need a left hand drive freewheel and the thread would need changing on the wheel/hub to LHD too (obviously only on the left hand side of the wheel/hub)