Re: My CBX build
Posted: Thu May 10, 2018 8:23 pm
Next was the frame and other black stuff.......
Frame was basically OK but with rust where the paint had rubbed off or got chipped.
Battery box was corroded with snapped fasteners, all due to 30 years of acid fumes / spills I suppose. You can see the battery retaining flap is missing.
Anything that needed blanking off was done with machining various blanks. These all had O ring grooves in to make a perfect seal to keep the blasting media out.
Master cylinders were particularly bad as they had been sitting in stale fluid for years
Frame and other steel stuff was stripped and then dry blasted so it didn't corrode.
The main stand wears where base rubs on the floor and they collapse a bit at the top where the stand top rests against the main frame. This makes both the tyre's touch the floor when the bike is on the main stand (only the front tyre is supposed to touch), this wear also changes the angle of the stand to the bike. It had plates welded top and bottom to compensate for the wear then dressed them off so they look original.
The side stand was pressed so the side of the pivot block was parallel with the down leg - in the picture you can see it curves away a bit which is just the weight of the bike on it over the years.
Is that all a bit anal
Had to do a couple of TIG repairs to build up the battery box and hinges but managed to save it
Amazingly there have been regular instances of the VIN plate being left on while being blasted Obviously it is then completely fucked, took pictures to prove the frame and VIN plate match as the paint will cover the frame number. Look at the weight of her........she's a big old girl.
The two holes in the VIN plate are originally held with 2.6mm brass drive-rivets, some people put 3mm aluminium pop rivets back in to hold it on .
I found a Belgium firm that sells the correct brass ones, although I got the size wrong the first time so had to buy a second set, we made a punch that fitted the head of the brass drive rivet and knocked them home. They look as they did when they left HM almost 40 years ago, well pleased.
Some of the Aluminium parts after stripping and vapour blasting, these are almost ready for matt black. If you look close you can see I've started to put the the blanking bolts on the threads and plugs for the piston bore etc. Each blanking bolt has a washer welded on so they don't have to use the actual component for hanging off when coating - as this can leave a small line where the powder doesn't cover. Some of the lesser important threads will just be cleaned out with a tap.
The blue stuff is heat resistant tape for going through the ovens.
The rubbers on the front foot pegs were worn and missing some blocks. Needless to say these are another thing not available from Hodna. A Dutch bloke called Wim makes his own in a shed somewhere in Holland, the old ones were removed with a hacksaw blade, Stanley knife, milling cutter in a windy drill and finally sandpaper. new ones were glued on with the same stuff they stick windscreens in with.
Next up is when the stuff came back from the coaters.
Frame was basically OK but with rust where the paint had rubbed off or got chipped.
Battery box was corroded with snapped fasteners, all due to 30 years of acid fumes / spills I suppose. You can see the battery retaining flap is missing.
Anything that needed blanking off was done with machining various blanks. These all had O ring grooves in to make a perfect seal to keep the blasting media out.
Master cylinders were particularly bad as they had been sitting in stale fluid for years
Frame and other steel stuff was stripped and then dry blasted so it didn't corrode.
The main stand wears where base rubs on the floor and they collapse a bit at the top where the stand top rests against the main frame. This makes both the tyre's touch the floor when the bike is on the main stand (only the front tyre is supposed to touch), this wear also changes the angle of the stand to the bike. It had plates welded top and bottom to compensate for the wear then dressed them off so they look original.
The side stand was pressed so the side of the pivot block was parallel with the down leg - in the picture you can see it curves away a bit which is just the weight of the bike on it over the years.
Is that all a bit anal
Had to do a couple of TIG repairs to build up the battery box and hinges but managed to save it
Amazingly there have been regular instances of the VIN plate being left on while being blasted Obviously it is then completely fucked, took pictures to prove the frame and VIN plate match as the paint will cover the frame number. Look at the weight of her........she's a big old girl.
The two holes in the VIN plate are originally held with 2.6mm brass drive-rivets, some people put 3mm aluminium pop rivets back in to hold it on .
I found a Belgium firm that sells the correct brass ones, although I got the size wrong the first time so had to buy a second set, we made a punch that fitted the head of the brass drive rivet and knocked them home. They look as they did when they left HM almost 40 years ago, well pleased.
Some of the Aluminium parts after stripping and vapour blasting, these are almost ready for matt black. If you look close you can see I've started to put the the blanking bolts on the threads and plugs for the piston bore etc. Each blanking bolt has a washer welded on so they don't have to use the actual component for hanging off when coating - as this can leave a small line where the powder doesn't cover. Some of the lesser important threads will just be cleaned out with a tap.
The blue stuff is heat resistant tape for going through the ovens.
The rubbers on the front foot pegs were worn and missing some blocks. Needless to say these are another thing not available from Hodna. A Dutch bloke called Wim makes his own in a shed somewhere in Holland, the old ones were removed with a hacksaw blade, Stanley knife, milling cutter in a windy drill and finally sandpaper. new ones were glued on with the same stuff they stick windscreens in with.
Next up is when the stuff came back from the coaters.