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Messages - Oddjob

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2251
Other Bikes / Re: Maybe a momentary lack of sanity???
« on: January 23, 2023, 05:20:50 PM »
Seems to be missing a chain for the front (or could be the rear) cams.

2252
Misc / Open / Re: CB750/500 petrol tap renovation
« on: January 23, 2023, 04:22:38 PM »
I was correct, when the tap is either shut or on reserve you cannot blow down the long tube. Just checked with my new tap.

2253
Misc / Open / Re: CB750/500 petrol tap renovation
« on: January 23, 2023, 04:07:08 PM »
Noticed that Bryan, I'm going to buy a genuine and see if that seals up the brass tube. I seem to recall that when the tap is shut it's supposed to blow anything coming down that tube as otherwise the tap is in effect constantly open. We'll see when the new seal arrives. I repaired the bowl as well BTW, it was totally rounded off by some ham-fisted amateur so I filed flat spots on it until it looked like a nut again, you can see the corners aren't as crisp as they should be. I'll buy a new bowl as well and keep that for a reserve.

I'll also measure the new doughnut seal and see how thick it is and have a look at making some replicas in Viton rubber. The back of the lever is smooth so a little silicon oil or grease on there to help it slide should stop it wearing as fast as well. If it seals as well as the original one I'll make a few and sell them on. £7 for a little rubber that TBH is no longer suitable for modern fuels is a little expensive.

Yes, Ian I did mean the long one, as above, pretty sure it should seal when the taps closed but it could be leaking past the doughnut seal, saying that, I've just remembered I have a new tap somewhere so I'll test that and see. Got the money Ian, lever in post later today hopefully or definitely by tomorrow at the latest.

King of bling, I like that. I've been called much worse over the years. Must admit to liking stuff to be shiny rather than dull. Nothing against Matt paint for instance, it can be very effective for contrast in places.

2254
I seem to recall Philward getting one and having trouble with the way it looked when fitted, I remember he had to alter it to make it fit right.

Ok if you can't find an original, better than nothing.

Saying that, why the hell have they drilled it for a mudflap, spoils the look completely.

This one is better and will fit.

https://www.ebay.com/itm/393707232177?_trkparms=amclksrc%3DITM%26aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D245484%26meid%3D3d1af7a9bf99403ab7eee801373046dd%26pid%3D101195%26rk%3D6%26rkt%3D12%26sd%3D114175325042%26itm%3D393707232177%26pmt%3D1%26noa%3D0%26pg%3D2047675%26algv%3DSimplAMLv11WebTrimmedV3MskuWithCorrectedRevOptLambda85KnnRecallV1UpdatedPrice%26brand%3DUnbranded&_trksid=p2047675.c101195.m1851&amdata=cksum%3A3937072321773d1af7a9bf99403ab7eee801373046dd%7Cenc%3AAQAHAAABMJalPYw7S3vZBrRkJxSbqr9G5Ln%252BiGQvIASW55TvzrMxzwT3zxw0knEyH6Jyqm%252FzYjOYqJN9cotMyvRpikhtEtiBPaan5nQZBRsOXKIldQmslDuChdHaIT5UUuiaW%252BLl404fyGFBzO9pCBrn1W3rfOH8CN6%252BksuEX8PI%252BDYRJH2G8jVIA25ZIH2r1xK4s6KlCXMNK9r2uu2Ayq848rpMEgkul9AT7xOGYW6VeybPpe1EMg%252FsmTNQQZnaNQQFF5LMBf%252FG9fO%252FDQ8twF%252FQ3OGVcLw4hIm79TXaVQouQhUn1ll02pEONQ2wlU9E0KLeEFYOHxTKBC21fVEohAIEuf0rRcJEzwP4X9Mf4L%252Bh973XVGxxBLyegsBzgL86G30PicxMhHK%252F4jdQlqc9TbifMfbtinY%253D%7Campid%3APL_CLK%7Cclp%3A2047675

If I had to give any advice I'd say flood the inside of the reinforcing plates on the underside with Zinc182 paint or you'll find they become water traps and will rot the guard from the inside out.

2255
CB500/550 / Re: CB550k1 US Import - UK registration
« on: January 23, 2023, 03:46:07 PM »
Not wishing to take any of Bryans sales away but as these will eventually no longer be available I thought I'd mention it's possible to repair the thing. So long as you can make out where the lug used to be you can file the back of it and just leave that section alone. Eventually you'll have another lug where the old one used to be, it's only a type of Bakolite and is easy to file, thickness doesn't seem to matter as it's the brass/copper contact that does all the work and so long as you leave that alone it's all good. I've repaired a few doing just that.

2256
Misc / Open / Re: CB750/500 petrol tap renovation
« on: January 23, 2023, 12:35:46 AM »
TBH Roo the garage was so cold today that my fingers were numb, the dirt is residue of the buffing soap. The tap was easy to do, just took me a few hours. Not 100% sure if the 550 tap comes apart but if it does it should also be an easy job to do.

2257
Misc / Open / Re: CB750/500 petrol tap renovation
« on: January 22, 2023, 09:52:36 PM »
Been doing a little work on the petrol tap from the second hand tank. Just mucking about really, tidying the tap up, what started as just a little tidy up ended up being a bit OTT to be honest, let me be clear this is NOT polished, I don't intend to polish it, I may polish the lever if I feel like it. This has just been dismantled and sanded using the little abrasive discs from Amazon, anyone can do this. What started as a pretty rough casting has slowly been sanded, started with 80 grade disc, just to get rid of most of the casting marks, then progressively down the grades, 120, 240, 400, 800 and finally finished with 1000 grit disc, light green to be exact. At each stage it got shinier and shinier, however the last 2 grade discs were contaminated with buffing soap and this transferred itself onto the tap and in the end I needed to clean the surface with some Brasso felt wool, which to be honest dulled the surface down a little.

Anyone can do the same, all they'll need is a set of discs and a Dremel. I have replaced the 2 small screws holding the lever plate in place with some stainless ones, you could of course replate the originals instead or even just use the existing ones but they will rust.





It's not really that visible but I feel it looks better than that dirty grey look is normally has.

The only worrying thing is that I reinstalled the doughnut washer behind the lever, mine for some reason seems to be made of cork not rubber, it doesn't seem to be sealing as I can still blow down the brass tube with the lever in all positions, saying that the cork doughnut isn't in the best of conditions so that may be the reason.

When I get round to assembling it back together I intend to replate the plate with the markings on so it doesn't rust.

2258
Misc / Open / Re: Anyone looking for a 500 project ?
« on: January 21, 2023, 11:59:37 PM »
The trouble with the bike is that it needs so many unobtainable parts, new seat, tanks got a huge crease in it, who knows what’s wrong with the engine, the list goes on.

My stash is slowly but surely becoming smaller, sure I have a NOS seat, stacks of engine parts but sometimes it’s the smaller stuff that stops a build, until some manufacturer decides to retool and make some more parts the ability to restore these bikes will become harder and harder and more and more expensive by the year.


2259
Misc / Open / Re: CB750/500 petrol tap renovation
« on: January 20, 2023, 07:02:44 PM »
Seems you do measure the ID of then ring, then add the cross section of the rubber. So 26mm + 2mm + 2mm is the 30mm I measured.

Found some viton 3mm sheet on ebay so I'll give that a go as well.

Cheap enough to buy 10 of each rings but appreciate the offer.

2260
Misc / Open / Re: CB750/500 petrol tap renovation
« on: January 20, 2023, 06:51:28 PM »
I did measure the one between tap and tank and I also thought it was around 2mm, the one under the bowl I made out to be 30mm though, that was by measuring the old one across it's widest point. Saying that I'm wondering if the sizes relate to the internal diameter rather than the external, as 28mm plus 2.5 each side would make it 33mm? I have a stack of orings lying around, I may try and see if I have any 26mm x 2mm ones, the bowl oring was actually not in bad condition and looked to be 2mm rather than 2.5mm.

I'm also wondering if the doughnut shaped one can be home made rather than paying over £6 for what is bound to be Nitrile and thus not resistant to the Ethanol in fuels these days. I measured the thickness last night and it looks to be around 3mm, I have some really good hole cutters so I just see if I can find a sheet of 3mm Viton and punch out my own, may be the way to go.

Yes, about the tap not the cap, I bought a few spare rubber gaskets for the cap some years ago, never had to use one but the cap gasket is very perished on this one.

2261
Other Bikes / Re: My other bikes.
« on: January 20, 2023, 03:04:38 PM »
First bike I ever rode was a C50, never got on with the front brake raising the suspension rather than the other way round. However, loved mine, my Dad gave me his old one KDB 51F, which I called Roy as my younger brother was called Roy and the reg plate spelled Kens Daft Brother so I thought it appropriate, no 1st gear, no kickstart, but I still lived on it until I spotted another in Battleship Grey and bought that, another F reg, JNA 39F, couldn't make anything out of the reg number so after that they were all called Herbie after the Love Bug film going around at the time. Rode the C70 and the C90, both 6v and 12v and thought they were great as well, especially with the extra power. Fond memories.

Many years later I bought my younger brother a brand new CB250N when I was at Queenies, I picked the reg and it was KDB 415V, so full circle. Weird how we remember all the old reg numbers. I still have the spare keys for the 250N, found them the other year in a box. Anyone need key number 208 or steering lock number Nieman 141130 let me know.

2262
Misc / Open / CB750/500 petrol tap renovation
« on: January 19, 2023, 10:25:32 PM »
Just taken apart my petrol cap that came with the new tank today. All the O-rings have hardened and the 4 way rubber doughnut behind the tap itself is also hard as nails.

Got me thinking, has anyone ever worked out the Viton equivalent sizes, the parts book show them as available separately but fails to give the sizes, the most you can get is the one between the cap and the tank described as 23mm but no section width. What with DS wanting £5.54 for one and £6.01 for the other (you can bet these are old parts so most likely nitrile and not Viton and due to the exposure to modern fuels we should be looking at Viton ones as a replacement) these aren't exactly cheap but most likely the Viton equivalent will be miles cheaper. The 4 way doughnut thing I'll have to source as genuine. Float bowl is rounded off so a new one of those is needed as well.

I can guess the sizes but the ones I've taken off are really flat so getting a section size could prove tricky.

So anyone already done this?

2263
CB500/550 / Re: Are these a Bargain?
« on: January 19, 2023, 09:42:55 PM »
Tank and panels arrived today. Starlight Gold as I expected. Bad news, one side panel badge has a lug snapped off, it's also got a copy side panel badge as the gold F in the middle isn't the right colour. As it happens I have quite a few of those lying about, simple fix. The panels themselves were perfect, ones a genuine panel and the other is a replica, replica is a lot heavier. Paint is fine, no scratches at all, tank is also scratch free, no dents, not the most perfect spray job I've even seen, you can see small areas where the flake is heavier, it may just need a good polish. Inside of the tank isn't fantastic TBH, not bad but small rust patches, rubber on tank cap is perished but I have a few of those spare and I'll swap the cap for a new one anyway, as I will the catch. Badges seem ok, petrol tap needs a good clean.

Fairly sure I'll use it unless I get one of the other tanks done beforehand.

2264
Project Board / Re: Teds new project a CB500 K0 version 0.5 circa 1972.
« on: January 19, 2023, 09:36:16 PM »
Doing it yourself is miles cheaper though Roo.

As you know I dropped off a load of parts at the ceramic coaters on Wednesday, as one part wasn't mine I asked him to quote me for just those parts.

In the bag were the carb bracket where all the carbs mount, the 2 small lifter arms that go onto the rod and the 4 lifter boxes that sit inside the bank of carbs and rise when the throttle opens. All done is silver and lacquered over afterwards, cost was £50 to 7 bits. Got to be honest and say it was far more than I expected and I wasn't at all pleased. Especially as I had 2 of the carb brackets myself to be done, 6 exhaust clamps and 24 exhaust collets, 2 Brembo radial calipers, 2 1300 wheels plus a few other small pieces, gonna need a new mortgage if it's as expensive as I fear.

2265
Got to agree, it looks very nice work. I don't spray myself but I have heard a lot from people who say that doing the Honda Candy colours is more of an art form than spraying. Hence why I thought it was advisable to comment.

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