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CB750 Barn find project - First Timer
Underdog1:
Picked up the tools today again.
Going to get all the bits to the powdercoaters tomorrow (if he's open), but i.m struggling getting the bushes for the shocks out the swingarm.
So one side i tried the ole threaded rod and socket trick to pull it out but the outer was stuck fast and remained in the swing arm. The other started going that way too so i tried to crimp the edges in a bit with a chisel but it won't budge.
Plan B is to cut it with a hacksaw and bash it out with something, any other methods worth trying first?
Stripped the wheels down today, managed to get the old tyres off in my garage with none of the correct tools.. wouldn't recommend it! Have ordered new spokes and cush drive bits to build them back up. Rims and hubs are going satin black, would like the spokes black too but they are expensive so have opted for a cheap stainless set from DS.
Still open to suggestions on where to get black spokes at a decent price as i can always cancel/ return the DS ones
Deano400:
Used the hacksaw method on mine, two cuts. There is advice on here but I can't remember who posted it. With two close cuts removing a thin strip the rest came out easy.
Underdog1:
Done a little research on how i can turn the spokes black, im reluctant to powder coat them loose as i think ill run into problems with them fitting through the hubs and flaking off around the threaded ends.
Best way seems to be gun blue which was developed to give steel a black oxide finish (originally on weapons hence the name). The spokes I've got are these from DS:
https://www.davidsilverspares.co.uk/CB750K6-FOUR-1976/part_105494/
Doesn't specify that they are zinc coated but i presume they are as surely they would advertise if they were stainless.. Plan is to use muriatic acid to remove the zinc coating and then use this:
https://www.amazon.co.uk/Birchwood-Casey-Liquid-Shotgun-Blueing/dp/B0091C0LBQ/ref=sr_1_4?s=sports&ie=UTF8&qid=1527504245&sr=1-4&keywords=gun+blue&dpID=41Qlxi9xPNL&preST=_SY300_QL70_&dpSrc=srch
Watched a few youtube videos and the process is simple. Probably the process which Central wheels uses to 'chemically blacken' their spokes that they sell for £100+
The muriatic acid shouldn't react with the steel beneath the zinc coating on the spokes so shouldn't weaken them at all. Will report back with results.
Edit: seems the black oxide only has limited rust protection, apparently the gun blue works on zinc alloys so might work with the coating left on. Other option would be to coat them with boiled linseed oil
Trigger:
Take the spokes to a platter and have them black zinked ;)
Underdog1:
--- Quote from: Trigger on May 28, 2018, 11:56:18 AM ---Take the spokes to a platter and have them black zinked ;)
--- End quote ---
admittedly this would be a lot easier but presumably more costly? Ill look into it any way
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