Vintage Dirt Bike Q & A

Any ideas on how to make stock shocks look like new again?

http://home.earthlink.net/~ricortes/images/electrorust.jpg

That's how I start anyway. I was just over at a friend's house this last weekend where he was doing it on what looked like a cast iron stove, one piece at a time, using a 5 gallon bucket.

He settled on using ~1 cup of TSP in a 5 gallon bucket with a 12 volt battery charger. Lots of detailed descriptions on the internet if you want more theory, but basically you just use something disposable like rebar for one electrode and your rusted part to the negative.

Ok;

I will ask, TSP?

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Proformance Cycle
c/o Lee Curry
58 Wyoming Ave.
Wyoming, PA. 18644
570-693-5811
mailto:proformance58@cs.com

TSP= tri sodium phosphate. A heavy duty cleaner i beleive it is however corrisive i would be hestitant to use it on motorcyle parts.

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Dino MX


1979 Honda 250 cr
Bultaco MK6 Pursang 250

For 73/74 CR shocks, here's what I do: dissassemble them, dump out old oil, clean all internal parts with solvent, clean bodies in the sink with hot water and a nylon bristle brush, wet sand the bodies with fine waterproof sandpaper, sand out all corrosion and dents, mask off rubber eyes, paint the bodies with aluminum coloured paint from a spray can (or the best matching colour you can find), clear coat with urethane from a spray can, straighten the rods if they are bent, re-hard-chrome the rods if they are corroded, replace the seal (there are 2 different sizes depending on the year), wet sand the alloy spring keepers and top eyes then polish with metal polish and clearcoat, sandblast the springs and paint semigloss black, clean up the plastic spring shield with sandpaper and paint semigloss black, fill with 5 weight oil (too much and the travel binds, too little and the damping is not full stroke), re-assemble and check operation by hand, install springs and keeper, add Showa 360 sticker, armourall the rubber in the eyes.

Where do you get the seals?

A very helpful guy named Jerry Morrison.
mailto:elsinorestuff@qwest.net
I bought some from him last time in October 06.