Thread: ORGS build up
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Old 09-24-2010, 11:34 PM   #73
x3300 OP
geoff
 
Joined: Mar 2005
Location: San Jose, CA
Oddometer: 170
Monolever Arm

I saw this R100RT monolever arm up for sale so I figured I'd see what could be done with it.

http://stuff.gotdns.org/bike/orgs-build-up/27-monolever-arm/new-arm.jpg

http://stuff.gotdns.org/bike/orgs-build-up/27-monolever-arm/arm-inside.jpg

Here are a few shots that compare the parlever arm to the monolever.

http://stuff.gotdns.org/bike/orgs-build-up/27-monolever-arm/compare-arm.jpg

http://stuff.gotdns.org/bike/orgs-build-up/27-monolever-arm/compare-brake-face.jpg

http://stuff.gotdns.org/bike/orgs-build-up/27-monolever-arm/compare-brake-side.jpg

The GS wheel fitted to the monolever arm. There's about a 20 mm gap betwen the hub and the final drive.

http://stuff.gotdns.org/bike/orgs-build-up/27-monolever-arm/wheel-offset.jpg

http://stuff.gotdns.org/bike/orgs-build-up/27-monolever-arm/gripster-clearance.jpg

I did some measurements to get an idea of wheel travel limits with the monolever arm. In both the topped-out and bottomed-out case the limiting factor was the u-joint rubbing on the inside of the swingarm.

http://stuff.gotdns.org/bike/orgs-build-up/27-monolever-arm/topped-out.jpg

http://stuff.gotdns.org/bike/orgs-build-up/27-monolever-arm/half.jpg

http://stuff.gotdns.org/bike/orgs-build-up/27-monolever-arm/bottomed-out.jpg

To get the drive shaft out of the swingarm I made up this spring compressor. The threaded parts extra long so it will work with longer swingarms.

http://stuff.gotdns.org/bike/orgs-build-up/27-monolever-arm/compressor.jpg

Here's the compressor in action.

http://stuff.gotdns.org/bike/orgs-build-up/27-monolever-arm/compressing.jpg

The u-joint was going bad so I'll need to replace it. I pressed the bearing caps out with this press, but I think just the screw of a bench vise would give enough force.

http://stuff.gotdns.org/bike/orgs-build-up/27-monolever-arm/pressing.jpg

Once the bearing cap was pressed out as much as it could be I grabbed the end of it with a bench vise and hammered the yoke off it.

http://stuff.gotdns.org/bike/orgs-build-up/27-monolever-arm/joint-removal.jpg

The disassembled arm and shaft.

http://stuff.gotdns.org/bike/orgs-build-up/27-monolever-arm/mono-parts.jpg

I did this mock-up to see where things could go.

http://stuff.gotdns.org/bike/orgs-build-up/27-monolever-arm/lt-mockup.jpg

-x3300
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