Doms CB550F1 project

[Oddjob]

I seem to recall there is a hole in the frame on the 500 but at this moment I can't remember where. TBH though, the welded parts, because they aren't seam welds, I'd say the frame doesn't really need them. The swinging arm always had them though but the amount that get those holes blocked by rust flakes etc is high. This topic is odd because not that long ago I did the shaking thing on one of my swinging arms, heard that rattling sound and decided I would stop that, took me about 40 mins to get it all out via the drill hole, the more you shake the arm the smaller the flakes get and they'll drop through the hole after a while.

I bought a basting syringe for meat, that has a small hollow metal needle, I'll fill the syringe with Zinc182 paint, fill the swinging arm till it's full, then allow it to drain through the holes, after that I'll fill with Waxoyl and allow that to drain. That should stop any future rust from developing. For me it's about ensuring the frame etc last as long as possible, I may do the same with the frame tubes if I an find a suitable entry point.

[DomP]

I definitely have rust flakes in the swingarm bracing

[DomP]

What's the difference in these part numbers? Same screws but one lot are quite a bit more expensive

[Oddjob]

B is chromed.
G is black

Also an A which is BZP.

There is one with no letter, probably plain steel

[DomP]

Oh thanks Ken!

[DomP]

I've had some progress having got the lower half of the engine back in the frame, I've started refitting bits like the starter motor but have a question, how do I hold the crank still while I torque up the rotor bolt?

[DomP]

I've had some progress having got the lower half of the engine back in the frame, I've started refitting bits like the starter motor but have a question, how do I hold the crank still while I torque up the rotor bolt?

I just stuck a strong screwdriver shaft through the rotor to hold it

I have another question though, which of the two casing bolts by the alternator does the cable retaining clip go on?

[DomP]

I cobbled up a bearing/bush press from a length of 10mm threaded bar, heavy washers and large inverted sockets to press against the bushes themselves.  Even after leaving the bushes for three days in the freezer and warming up the swing arm and Liberal amounts of grease they required a hell of a lot of force to get them fully seated, to the point I stripped one length of 10mm bar.   Still they are in now so that's another job ticked off.

I noticed I'm missing the dust cap the sits under the rear brake arm, how important is this part?  Might be one for Ken or Bryan's endless supply of spares😉

[Bryanj]

Early ones didnt have them so cant be that important, i think yours should have an arrow on it that when it lines up with arrow on brake plate means the shoes are worn out

[DomP]

Early ones didnt have them so cant be that important, i think yours should have an arrow on it that when it lines up with arrow on brake plate means the shoes are worn out

Yeah that's what CMS parts fiche suggest, to be fair Bryan I'm not going to ride it in crap weather so dust and during washing is the only concern.  I reckon I could find something if only a thin washer to cover the exposed felt pad.

[DomP]

Im revisiting my carb restoration now i have a zinc nickel plating kit, am I correct that this pin needs drilling out to enable the carb linkage rod to be removed and what can I use to re-pin afterwards? 

[Sesman]

Photo required for confirmation, but probably yes. No, you can’t reuse the pin!!!

[DomP]

Photo required for confirmation, but probably yes. No, you can’t reuse the pin!!!

Yeah, I said what can I use to re-pin.  Here's the photo I meant to upload.

[Oddjob]

Use a dog point screw from Ebay, get them in brass if possible. Fit them into an electric drill, point end outward, spin and use a file to grind the end down until it fits inside the slot in the bar. 4 or 5mm is best.

I'll have some of those bars in stainless in a few weeks Dom. They tend to rust a lot.

[DomP]

Mines a bit flakey to be honest Ken, how much are the rods as I'm trying to stop thie budget running away😄