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CB750F2 .... silk purse from a sows ear.

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SumpMagnet:
Now the weather is less grim again, and I got a free weekend, some work has been done. Well,, once I had refreshed the coolant on the working machine that was...

Well...the less than wonderful satin black paint issues wer eresolved, and hte fork lowers treated to a fresh coat of satin black. This time they look much more how I wanted. Better coverage and better finish.


Then I broke out the paint stripper and started on teh frame and other bits. POR15 stripper is the business. Just like paint stripper used to be back in the good old days. Removes paint, varnish..skin...yup. Burns like the devil if you get some on your skin, or..as I did...get some splashed into the gloves you put on to stop getting splashed... oh well.
Really did the job.

Still got to do the headstock, but want to make sure I don;t ruin the info plate though. Will get it taped and protected before I go near it. Some surface rust in a few places, but the wire brush and wet and dry took care of the worst of it. I have put a cover coat on the areas I cleaned up to keep corrosion from starting again.The sections I have done look really nice.

While I had the paint stripper out, I thought I would see what state the petrol tank was in under the matt black paint job it had been treated to at some point...

I knew I was going to find filler, as the badge recesses had been filled both sides, so wasn;t surprised to find a blob of filler on both sides. Will grind that out and check what's under before re-doing it. Was pleasanlty surprised to see how little actuial rust there was. A few scabby patches on the flat areas where rust had propagated under the paint, but very little rust on the seams. Underneath is very solid. There is an oily probably once petrol substance in the tank, but no coatings or linings. Still got it's cap security chain too. The only worry is I can't see what has been done with the badge mounts. Whether they were taken off due to damge, or just covered over as a 'de-badge'. Will ind out when I dremel out the old filler.



Interestingly...I found traces of paint under the filler. Shiny black paint that had been lacquered black. I also found evidence of orange at the back corners and roughly where the badges would have been. So....originally...she was black. Or at least the tank was :) Black with the orange stripes looks pretty good...so she may well end up looking that way eventually.

K2-K6:
Decent progress,  frame looks good too.  Encouraging when things come up well after cleaning.

Did you sort out which mastercylinder part was which  ;D

SumpMagnet:
Did some more work on the last bits of the frame...and while I was out in the shed...as it was such a nice day today...I thought I would have a dig to see what lurked under the filler.

Now...the filler itself looked to have been put on over the original black/orange paint, but I always worry what lurks beneath. You paint the thing..only to find there was rust under the filler that pops it free, or else the tank had been holed, and a dollop of Araldite used to petrol proof it before hiding it under more epoxy. So I will always rip it of and re-do it after proper preparation.

Both sides of the tank had a big area of filler, so I was expecting dents. Did this once on a Kawasaki tank only to find huge dents on both sides that had reduced the tank volume by nearly a gallon.

Sods law operates well in these events, and predictably the filler was really well attached and showed no signs of budging...so my cheap low power dremel type tool was pressed into service with a burr to grind away the filler. After an afternoon of hard graft, one side is fairly well excavated....and this is what I found:



Looks like the bulk of the filler was just slapped on to de-badge the tank. Not sure if the tank badge fixtures were machine screws or self tappers, but it really does look like it ought to be possible to reinstate proper tank badges. Something I would really like to be able to do. Obviously, I haven't done the other side yet...but having cleaned the filler away from the whole badge recess on one side, I can see there is no damage to the metal around the badge.  Overall...I am really impressed with the state of this petrol tank.

Relief really...as when I saw the bike advertised, it had a red tank on it which lacked a tap and looked scabby...but had badges. The seller told me it wasn't the original tank, and that he had that one as well. I was basically offered the choice. He brought both along and I went with the original tank as it had a tap, the original cap with security chain and looked a lot better inside. It was just painted horridly and lacked badges. Now I have stripped it....I can see it is in really good order, really not rusty, and if I can get the badges back in situ....I will be a happy bunny indeed.

Of course....the other side could be a horror story...but I will get to that in due course!

SumpMagnet:
Damn.....I am pleased with how this turned out.

After much paint stripping, wire brushing, sanding and wet and dry fettling, the frame was ready for paint. I am not a fan of powder coat, though I do see it's advantages. I also wanted to do this myself, and do as much as I physically could. Now...I do not have pots of cash, so am trying to swap spending for time, effort, and elbow grease when I can. I also am really not on a time schedule and find this project to be as much therapy as anything else. Today was one of those 'happy' days.

The frame was suspended in the middle of the shed with acombination of contrived contraptions and bits of wire and chains. It was solid, and the thing wouldn;t swing. Musn't swing...the shed isn't big enough! There is room to swing a small cat in there...in certain directions....but a full sized moggy won't twirl. Everything else in the shed had to be covered up, and was. The weather was nicer and warm...but not too hot. It was time.

2 cans of smooth black hammerite and a couple of face masks later, the deed was done. The floor was also painted and sticky. Bit like an old pub carpet...everything not covered up was sticky with overspray. The masks clogged...and I had to take regular trips outside to breath.... but I am dead chuffed with the end result.



It is soooo...shiny!

Of course, it's also only touch dry, so I don't dare try and lift it down, and I also want to rig up a stand through the swingarm pivot and engine mounts so it won't rest on soft paint It is OK where it is for now...but I can barely get around it, and it's kind of...in the way...hanging in the mifddle of the little space I have.

Next job, really, should be to get the forks done. While that is happening, I can clean...strip and paint the swingarm. Seems to make sense to build up a basic rolling chassis so the frame doens't sit on it's paintwork and it will make it easier to move about in the shed if I can move the bike too. Happy days.

Nurse Julie:
Great job you have done there......ooops, watch your head , don't ruin the paint  :)

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