trailie

I've two M80 frames, one is stamped G and the other is stamped with a number 3. From my own manufacturing experience I used to think they might have been an inspectors stamp but your idea may well be more plausible Stevem75. http://ralphsbultaco.blogspot.com/

It looks fantastic, beautiful restoration, well done. Great to see it finished.

Keep a look out on ebay, I was able to get an original copy for my Model 80. You can view it here http://ralphsbultaco.blogspot.co.uk/2014/04/12-download-parts-list.html

Post a photo of that watch thing, would love to see what it looks like.

Thanks for the comments guys. Yeah I'm quite sure the back box was the first thing most people took off. The alloy mudguards couldn't have lasted long either. I still have the Miller silencer box from the old photos but its split and the insides fell out of it many years ago.

I posted some new pictures of the bike now that its finished, I hope you like them. I might take some more if we get a touch of snow ( link below) http://ralphsbultaco.blogspot.co.uk

I would have reckoned probably 10-11 Nm (7-8 ft/lbs) would be about right for an M6 thread.

I took some photos of my re build, although it's a different model it may help. http://ralphsbultaco.blogspot.co.uk/2014/07/26-building-up-crankcases.html

Good job with the tank Manndolins. I've also got mine finished this week although I didn't do the actual painting. I did however cut it in two at one point to get rid of the old petrol sealer so its nice to see it back on the bike. She had to come down some very steep stairs as well this week, so hopefully very soon I'll get a ride on her again. http://ralphsbultaco.blogspot.co.uk

I had thought of cutting the two big slots like you did but the boat repair man reckoned it wouldn't make any difference just cutting the thing in two bits. Yours turned out looking really good Larry. Did you use anything inside it again afterwards. Brian was telling me he has a resin that he uses in chemical tanks that's resistant to acids, but ethanol's not really an acid, so I might go with whatever is currently the best - caswell maybe

Well I finished fabricating the chainguard with a nice dimple and bracket, but I've also took the plunge and cut open my tank. Anyone made similar repairs? http://ralphsbultaco.blogspot.co.uk

Larry that's a great bit of work and easy enough to understand, appreciate it. I've never seen a bracket like that one before. If I'm honest I'd still like to make ones similar to the top picture. What thickness is the aluminium in your bracket, I was thinking 2 mm would be ok. http://www.ralphsbultaco.blogspot.co.uk

Thank you, that would be great. I'll PM my address

I want to fit my front mudguard to a model 80 sherpa using the original shaped stays. I don't have any of these but I reckon I could make them easily enough with a little help. If anyone has a bike with these on it (twinshock maybe) could you do me a favour. Could someone screw them off and try to make a drawing or template with a few dimensions on it. It would give me a better idea than just working from a photo. Ralph

I started making a chainguard today for the M80. Got a sheet of 1.5mm aluminium about 18" square from a mate for free and made a folder from bits that where lying round the shed. Managed to put a nice curve on the top of it. Next it needs cut out and filed up. Maybe tomorrow.