extending swingarm need pictures and ideas

r1yfz · Post by **r1yfz** » March 8th, 2010, 2:23 pm

Im looing to extend my stock swingarm.... it will mostly be a flat drag/dune bike...
I will be useing 2 swingers to create one..

Im looking for picture off some cr500's with extended swingarms and please list how far out back it is... im trying to get ideas of how long to do mine.

blownbillybob · Post by **blownbillybob** » March 8th, 2010, 3:07 pm

look on craigs list SF bay area lefty list his on there all the time i think there $380.00 bolt on with 3 slotted adjustment holes no rear brakes but i think for $50 more he will machine it for brakes!! hes out of lodi,Ca

r1yfz · Post by **r1yfz** » March 8th, 2010, 3:11 pm

i can build my own for a fraction of that cost

caseyracing222 · Post by **caseyracing222** » March 8th, 2010, 4:16 pm

r1yfz wrote:i can build my own for a fraction of that cost

He includes an axle, snails, and chain slider. I have the one with the brake quality stuff, I just wish that lefty would use Metric Hardware and not SAE

I'll get you a pic later if Paul doesnt beat me to it

100hp honda · Post by **100hp honda** » March 8th, 2010, 7:45 pm

theres several designs of extensions depending who made them but the ones ive seen were pretty simple in design. the problem with using 2 swingarms to make one is they will be in a fixed position and youll have almost no adjustablility, if you know the exact amount of extension you need then it would be fine but youll be shit out of luck if you want to shorten or lengthen it for different terrain. a chunk of billet 6061 and drill press is really all you need to make some adjustable ones. if you have acess to more sophisticated equiptment it would probly be easier but not necesarry.

100hp honda · Post by **100hp honda** » March 8th, 2010, 7:55 pm

this was a local dudes yamaha chassis. these are more sophisticated than some ive seen but you get the idea. on the steely swingarm you can pull out the end pieces and slide the extension inside, however on the newer honda swingarms you cant slide the extensions inside.

r1yfz · Post by **r1yfz** » March 8th, 2010, 8:52 pm

it will be on a stellie.... i wil be dynoing the bike to see what it makes before i decide how long... but im guessing it will be in the 6-8 over range on a 14 viper

britincali · Post by **britincali** » March 8th, 2010, 8:53 pm

Mine is adjustable from 5.5-9.25" and I run it around 6.5", anymore than that and the loss of traction is a PITA.

r1yfz · Post by **r1yfz** » March 8th, 2010, 8:55 pm

any pictures?

caseyracing222 · Post by **caseyracing222** » March 8th, 2010, 9:30 pm

100hp honda wrote:this was a local dudes yamaha chassis. these are more sophisticated than some ive seen but you get the idea. on the steely swingarm you can pull out the end pieces and slide the extension inside, however on the newer honda swingarms you cant slide the extensions inside.

That bike has soooo much travel in the front......

looks like he needs heavier fork springs

britincali · Post by **britincali** » March 8th, 2010, 9:44 pm

r1yfz wrote:any pictures?

Ill look..

britincali · Post by **britincali** » March 8th, 2010, 10:14 pm

You dont need to machine or weld anything to run a rear brake, the caliper rests on top of the swingarm and once the axle nut is tightened it aint going anywhere, all you need is a longer hose.

100hp honda · Post by **100hp honda** » March 8th, 2010, 10:17 pm

caseyracing222 wrote:That bike has soooo much travel in the front...... looks like he needs heavier fork springs

your right and ill pass the info along. perhaps he could use some of your magic fork bleeders/fuel filters

100hp honda · Post by **100hp honda** » March 8th, 2010, 10:18 pm

r1yfz wrote:any pictures?

brits setup would work tits for you. not sure where he got em though

r1yfz · Post by **r1yfz** » March 9th, 2010, 5:20 am

thanks brit!!

How did that tire hold up? i will be running the same one. Did you have any wheelie problems while launching hard in the first 300ft with that setup?

100hp... i think i remember brit posting somewhere that he got those off a hillclimbing forum? could be wrong though.

britincali · Post by **britincali** » March 9th, 2010, 8:31 am

Got them from a guy on www.kingofthehill.org

It works perfect in the sand full throttle + juice second gear launches are possible with the front just barely coming up.

r1yfz · Post by **r1yfz** » March 9th, 2010, 9:47 am

do you have anyidea how many links are in your chain? or where you got your brake line?

britincali · Post by **britincali** » March 9th, 2010, 12:45 pm

The chain is a 120 link plus I added 10 or so more links from an old one, I got the brake line from glen at GSS he stocks them

hillclimbjim · Post by **hillclimbjim** » March 9th, 2010, 1:57 pm

front lines work but a little long

caseyracing222 · Post by **caseyracing222** » March 9th, 2010, 8:47 pm

100hp honda wrote:
caseyracing222 wrote:That bike has soooo much travel in the front...... looks like he needs heavier fork springs
your right and ill pass the info along. perhaps he could use some of your magic fork bleeders/fuel filters

or maybe he can follow your expert porting advice

lets not go looking for a fight.... Back on topic. I can get you a pic of the LEFTY extenders... would you like a pic of them off or on the bike?

r1yfz · Post by **r1yfz** » March 9th, 2010, 8:49 pm

on the bike perferably

100hp honda · Post by **100hp honda** » March 9th, 2010, 9:06 pm

caseyracing222 wrote: lets not go looking for a fight

have a nice day

caseyracing222 · Post by **caseyracing222** » March 9th, 2010, 9:10 pm

Here are all the types I know of.....

Starting of with my bike.... I use Leftys extensions with the brake set up

another set of Lefty's NOT my bike

Dave J extensions and bikes

Jeff Thomas built extensions and machines

and French built stuff....

britincali · Post by **britincali** » March 9th, 2010, 9:15 pm

Ive looked at that bike close up at RPs pad, the supercharger setup is pretty fukin cool

glen howell · Post by **glen howell** » March 9th, 2010, 9:17 pm

BannedCR500Riders.com

extending swingarm need pictures and ideas

extending swingarm need pictures and ideas