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Topics - mickwinf

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CB500/550 / oil guide a
« on: June 26, 2022, 04:15:02 PM »
just reassembling my crank cases on lazarus, but can not remember how the oil guide 'a' fits. it seems to fit only one place but looks a bit odd, has anyone got a pic of it in place?

CB500/550 / duff spark plug
« on: June 16, 2022, 11:53:03 AM »
Had a morning off today so thought i would take my 550f2 for a cheeky spin, the first outing this year! so checked the tyres etc and started it up, but only fired on 3 cyls, no 3 not sparking. of course its awkward to remove but tried it on the side of the engine and sure enough dead as a dodo. Ok so plugs do wear out but i have had this problem before with my 500/550 bikes, where after being stood for a while and even if it was running fine when last used, one plug decides not to play. I always use NGK and have very few miles on them so what is the answer, do i change brand?

Member 4 Sales / seats for sale
« on: March 28, 2022, 01:15:53 PM »
I seem to have a surplus of seats for 500/550 which are taking up space so need to move them on. There is a 500 four repro seat with the plastic base which i bought from a forum member, it looks new or near new and i did try it on my 550 for size and seems to fit well. I would like to get my money back so £100. I also have a repro 550 f1/f2 seat, it does look good but tried it on my bike and did not fit without some fettling so £40. Thirdly i have a cafe racer style with a rear hump that fits the same bikes, has a small split but looks ok, £25. will post pics soon

Misc / Open / preparing parts for zinc plating
« on: February 20, 2022, 03:44:03 PM »
Hi i have some parts for zinc plating, carb parts and bolts etc. I have read some old posts but i am unsure how to prepare for the replating, do i need to strip the old plate or will the plating firm do it? i am not keen on chemical mixing like Ash suggests so up to now i am just wire brushing to a clean surface.

CB500/550 / 500 four airbox
« on: February 08, 2022, 08:23:48 AM »
further to the discussion recently about air filter covers being hard to find, there is a complete airbox on ebay including the tool tray and even the air filter clip and spare fuse holder! A good buy for someone and UK based.

Project Board / The rebirth of Lazarus
« on: November 06, 2021, 07:54:43 PM »
Due to popular demand i have called my 500 four "Lazarus". As some of you have seen in my other posts it was in very poor condition, many parts are past any hope, the engine is seized so not a great start. Originally i was going to leave it for a later date but decided to strip it down to better store it. well that poor bike had been horribly abused in the past so i feel it is my duty to bring Lazarus back to life. It will need all the usual stuff, engine and wheels rebuilt and lots of replacement parts, and the wiring... well it consisted of lots of odd connections and tape and all of the block connectors had been chopped off. Will need a new wiring loom complete. The first job will be to strip to the frame and get it de rusted and painted, so here we go again!

CB500/550 / I have done it again
« on: October 27, 2021, 09:46:42 PM »
well the devil came and made me do it. I prefer the look of the 500 rather than the 550 f2 that i already own but cant afford to buy a good example, soooo here it is......

Misc / Open / tank de-rust
« on: August 02, 2021, 03:26:53 PM »
Ok i know it has been covered before but it is doing my head in! I have de- rusted the interior of my spare tank using phosphoric acid as recommended by Ashimoto. It works very well leaves it completely clean metal. The issue i have is it rusts again overnight, and had the same problem with my old tank. So these are the methods i have used with no success. If i flush with clean water then with petrol, it rusts. If i let dry without flushing the phosphoric acid it leaves a black tar like substance which only cleans off using more acid. I also tried swilling some diesel around and still it rusts! I don't want to line it as most people on here are dubious about them so what do i do? when the tanks are new they dont flash rust so why does it happen?

CB500/550 / petrol tap
« on: July 31, 2021, 03:19:27 PM »
I am in the process of sorting out a spare tank for my 550 f2, and it has some slight differences from my other tank. the main issue is the thread on the fuel tap, on the old one its 16mm and the taps are easy to find on ebay. However the new tank has a 20mm thread and they seem to be harder to find. While i have been looking for one i checked David Silvers website and saw on the 400 four repro tank you have to use a later usa type tap and i was wondering if that is a 20mm? The outside spanner size is only 22mm, if anyone could confirm or deny that would be a great help.

CB750 / more scam adds on ebay
« on: July 18, 2021, 11:52:42 AM »
beware more adds on ebay for 750s, quote, selling for a fella who is away!

CB500/550 / 550f2 seat
« on: May 29, 2021, 12:42:23 PM »
My seat base on my 550 f2 is not great, has been repaired in the past and is solid-ish and the foam and cover have seen better days but functional. I saw on facebook a repro seat someone was selling at a decent price so took a risc and bought it. At first i was pleased, it looks decent so tried it on this morning but i doed not fit well at all. I searched for other posts and seems like a common problem, but is it worth modifying to fit? And why do the manufactures make reproductions that are not as near as possible to the original? Ok its a fibreglass base, but also the pattern on the seat is wrong, the fixing bolt mounts are in the wrong place, th rubber spacers don't line up with any part of the frame and the grab strap is also wrong and the chrome ends a different shape. So anyone out there got a restorable seat for f1/ f2 for sale? Bitza will be looking down and laughing but good seats are hard to find.

CB500/550 / 550 tank
« on: May 23, 2021, 09:52:20 AM »
Apart from the paint scheme is the 550k3 and the 550 f2 petrol tank the same? My f2 tank has had the tank badge area fillered over and i would like a spare tank to renovate as original, and there is a k3 one on ebay.

CB500/550 / fork seals
« on: May 09, 2021, 03:28:59 PM »
I have a leak from my fork seal on my 550. They were replaced when i rebuilt the forks and done about 60 miles since, the fork leg is not pitted. I also had a leak at the allen screw at the bottom that holds the stanchion in which i thought was the copper washer so replaced that and thought that was job done. now i am not sure if it was fluid leaking from the top seal and running down or was actually the washer? So any recommended suppliers of seals and any tips on fitting, although it seems easy enough and done it before but why is it leaking so bad?

Misc / Open / clean workshop
« on: February 21, 2021, 03:03:56 PM »
i have just spent several days tidying and re-organising my workshop and very tidy it looks. thing is, i know as soon as i start working on anything, however small the place will be a mess again as i am such a messy worker. Who out there is like me or are you all super clean when in the garage?

Tricks & Tips / removing caliper pistons
« on: January 13, 2021, 11:56:50 AM »
I cant remember who suggested this method but just tried on two old seized calipers and worked a treat. Basically you screw a grease gun end into the thread where the hydraulic pipe fits, only needs a thread or two so even if the threads are different it will still work. Make sure the bleed nipple is tight then pump away until the piston pops out! Comes out quite gently so not dangerous, i now have two calipers that can be re used.

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