SOHC.co.uk Forums > The Black Bomber Board
1969 CL450 US Barn Find Restoration
AshimotoK0:
Personaly I don't think that 'fix' is rivet counter territory. More like spot the bodge territory ..or Bubbas's been there.
I think I would do that fix as a temporary expedient but get hold of a replacement shaft and even if you never need to fit it you can hand it to any new owner and show your hand. After all you went to a lot of trouble to build the bike to a very high standard.
Nobody has mentioned two blobs of weld yet ;D ;D
royhall:
That fix would be going on mine to keep the bike on the road for the summer. Also gives you time to find a decent shaft instead of having to buy the first thing you see. Shame all the jumbles are cancelled. Nice little project for the winter months. Cheers Bubba Roy.
Not a chance a fix like that would stay on one of my bikes after the riding season was over. However I have done the dowel trick a few times for other people and every one has ended up a permanent fix.
MrDavo:
According to a couple of posts on the US twins forum, spindles off any 5 speed 450 / 500 are interchangeable, so I’m very tempted to order the 500T NOS looking one that Ash first listed, I’d rather do a permanent fix even if I do have to strip the primary drive to do it. The part number is subtly different however the 500t one fits the CB450 K5, and so does mine, according to CMS even though my 030 one isn’t listed for the 500T and vice versa, the 040 isn’t listed for the K2.
Update: just bought it! It was 44 Eu with postage, CMS listed it at 113 plus p&p, though not in stock. Here’s hoping it fits.
The other used ones are worse than mine, and if I don’t have to weaken the new shift lever by drilling a hole in it I won’t.
AshimotoK0:
Nice one Dave .. I have been looking at this and Roys 450 restoration logs over the lockdown, as I am getting everything together for my own '67 Bomber engine.
Quick question though .. when looking for an exhaust cam (mine has good journals but one quite deep pit on one lobe) .. at what year /model was there a change in design so that it won't fit an earlier 450? How do you recognise the changes? I tried calling Newman Cams a few times yesterday but no reply although they are still operating according to their FaceBook site. My general feel from talking to Franco Cappenelli is that any deep pit needs hard welding and I am not sure how cost effective that may be versus getting a decent used cam. Buying used is such a lottery though and at least with the one I have I know the journals and lift are good. Luckily the inlet cam is near perfect and I have 4 very decent cam followers.
Well ... not so quick question in the end :D
MrDavo:
I can’t tell you exactly when it changed, but a point to watch is the drive for the points advance retard gubbins. Later versions seem to have a slot for a woodruff key, mine has a hardened pin, driven in at a right angle just outboard of the last ‘step’ which engages with a slot in the back of the advance unit.
As mine is a ‘69 bike it may well be the same arrangement as your ‘67, just make sure you look very closely at seller’s photos of that area as they are not interchangeable.
Some have, like mine, three diameters outboard of the left hand cam, later ones have four.
Edit: looking at the CB500T strip article you posted on your Dropbox, that still has the pin, but also the four diameters, maybe that’s the difference I remember, just look very closely at that area and compare with what you’ve got, as I had to.
I had a look at what’s available on eBay, some I wouldn’t even use as a paperweight. My original is on my office windowsill, perfect lobes but broken damper ring retainer, you are welcome to it if you don’t find a better one. However as I reasoned, there’s always a risk that the damper ring makes a bid for freedom and blocks an oil way somewhere.
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