1961 CB72 ProjectI got back from my latest trip on Friday morning in time for a day out at the Stafford Classic Bike Show less than an hour from my home. The density of bikes at Stafford was much higher than at the Barber Festival where everything is very spaced out.
I met up with my good friend Les who has been experimenting with making aluminum spinnings which we are hoping to make into replica coil nuts which always seem to be squashed on thee bikes.  We've had plenty made and now need to work out a method to impress the thread and knurl into the surface.  More later....... G '60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160 '66 Matchless 350 '67 CL77 '67 S90 '77 CB400F Hi Chase
I need to trial fit the set of pipes I have and then get back to the supplier. My 'partner' in this venture has lost interest so I need to make sure the fit is perfect and then get some more done in a batch. I'll post details here when some progress is made. G
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160 '66 Matchless 350 '67 CL77 '67 S90 '77 CB400F Today was first time back in the workshop fro a little while so I needed a little therapeutic project to get myself back into the spirit of 'fettling'.
I realised that the kickstart bushes I made a little while back did not have the drillings for the grease feed from the nipple. Aware of the possibility of messing up the interference fit for the grease nipple, I decided to play safe and make a little bush to guide the drill. This worked out quite well and I was able to make the outside less than 4.5mm to slide into the space for the grease nupple and put a 3mm hole down the center for the drill.  While I was at it I knocked up another kickstarter bush for a friend in need..... The little guide worked really well although I had to be a bit careful as the drill emerges on an angled surface. Enough to break the drill if you are not careful.  Two covers are now ready for a final coat of silver paint before they get assigned to their project bikes.  G '60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160 '66 Matchless 350 '67 CL77 '67 S90 '77 CB400F After the success of getting the kickstart bushes drilled I tackled another nasty little job. This footpeg hanger came from eBay (turned out to be Ohio Cycle in disguise) and someone had snapped off some kind of hardened, threaded tool in one of the holes. The part was otherwise in excellent condition. No cracks or bends.
 Trouble was, nothing would touch that hardened steel.. I scratched my head for a while and remembered I had bought some carbide-tipped 'Artu' drills that are able to drill hardened steel among other things. They were originally intended for putting an oil hole in a CL style crankshaft for use in a CB engine. I never got around to that but this job looked like it woukd test them.  Amazingly I was able to drill a hole before I even worked out what I was going to do. I worked out a plan and quickly drilled a second hole with thoughts of making a slot. Just in case, I put the hanger in the vise and gave the second hole a tap with a hammer after hearing the part. To my surprise the stubborn fastener started to move. After more heat and more tapping, it finally came out.  I still cannot work out what that part was or why it was in there. I suppose it seemed like a good idea to someone.... G '60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160 '66 Matchless 350 '67 CL77 '67 S90 '77 CB400F
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160 '66 Matchless 350 '67 CL77 '67 S90 '77 CB400F
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