1978 CX500 "The Grub", 1983 GL650I "Nimbus"
I'm restarting my build thread for the AdvWing, copying the relevant content from the old forum:
Randall-in-Mpls' date='11 May 2010 - 05:45 PM said:I came home this morning with about half of a GL500 basket case to start my dual-sport project. I chose the GL because the pro-link rear suspension is used on many Honda dirt bikes, and I'm hoping that substituting a dirt bike shock will give me the higher stance and greater travel that I want.
I've got a frame, seats, engine, rear wheel, and full electrical harness. This was a parts bike that had been crashed, so there's no front end, tank, or body work. The seller used the engine for a transplant a couple years ago. Between this and the CX lump I got last month, I should be able to build a runner.
The frame is a little tweaked, so the first task after stripping it down will be to straighten it (advice, please?), or have it straightened. If that's successful, I'll pursue a salvage title.
Next, I'll mock up a rear shock (he had already sold the original, but I wasn't planning to use it anyway) to measure the amount of travel that the drive shaft u-joint will tolerate. Then, hopefully, I can identity a shock with the right specs.
Front end from the triples down - I have the original (broken) triple, so I can do a stem swap if I need to. The seller offered a good price on an '89 YZ125 front. Would that work?
Handle bars - something from a dirt bike. Shouldn't be too difficult.
Fuel tank - plastic, maybe?
Body work - I might try to mount some dirt bike plastics. If I use a stock GL tank, some of the CR side panels look like they might mesh with a little modification.
Side stand - will need to be longer, and with a larger pad. Maybe a stock stand from something else will work?
Seat - I'll most likely set up for solo using the stock seat pan, and build a box on the back. I should allow for the 2-up option, though.
Spoke rear wheel - I'd use the "German method" that's been posted, with the GL hub and a donor rim.
Exhaust - I'd like to get the H-box out from under the engine to increase ground clearance. Maybe do divorced resonance chambers with a later crossover, or into a shared can. Or a custom dual-inlet resonance chamber with a single outlet. I haven't thought this out too far yet.
Engine guards and skid plate - will greatly depend on what form the exhaust takes.
Instruments - a digital dashboard of some variety. By the time I get to this point, they'll probabaly have integrated GPS.
Panniers and other "adventure bike" extras.
I'll update this as I make progress, but this will be a multi-year project, so don't expect too much too fast. I'd appreciate comments and ideas, and solutions from those a little further along in similar projects.