1961 CB72 Project

[G-Man]

I just bought a metric conversion kit for mine so that I can cut metric threads. It's 50 year old stock new in box and cost almost as much as the lathe cost me originally.

I wrote to the Myford factory (recently changed hands) and they sent me a set of instructions for free. Nice people.....

G

Greg

It's one of the best purchases you can make for a home workshop. But, it doesn't matter which lathe you buy, it's always too small.... With a bit of ingenuity, you can get by.

The great thing is you get your investment back x10 by repairing parts the you's otherwise have to buy new or pay someone else to repair. Being able to make special tools is also a godsend.

I've had this one for 20 years. Bought secondhand, it is now worth 10 times what I paid. I wish the bikes were such a great investment...... :-)

G

I'll second that! I don't use mine enough but it is handy to have when you need it. My quick change gearbox spit some gear teeth a while back so I bought a second lathe. Box was an A/M addition and obsolete. Found one on ebay years later and it's back up and running, then sold the other one for a profit..................well not really, it paid for the quick change box!

[sixtiescycle]

I just bought a metric conversion kit for mine so that I can cut metric threads. It's 50 year old stock new in box and cost almost as much as the lathe cost me originally.

I wrote to the Myford factory (recently changed hands) and they sent me a set of instructions for free. Nice people.....

G

That's something I haven't tried yet, threading. I'm pretty sure I have the metric conversion gears too. Lathe was my dads and I remember him saying the pile of gears in a box was for metric threads. One of these days I'll have to try it!

[Waveblaster]

Greg

It's one of the best purchases you can make for a home workshop. But, it doesn't matter which lathe you buy, it's always too small.... With a bit of ingenuity, you can get by.

The great thing is you get your investment back x10 by repairing parts the you's otherwise have to buy new or pay someone else to repair. Being able to make special tools is also a godsend.

I've had this one for 20 years. Bought secondhand, it is now worth 10 times what I paid. I wish the bikes were such a great investment...... :-)

G

My father has one and I occasionally look around various classifieds to see what is available . He mentioned that the tooling is the expensive part. It is one thing to buy the lathe but as he says having the gear to go with it is important. One day when the time is right.

[G-Man]

Dick

I use the screwcutting gearbox a while back to do these. I cheated a bit as the threads are 26 tpi rather than 1mm (25.4 tpi) .... :-)





This was to convert a set of later CL77 'crimped' shocks to earlier type with the threaded collar. This was an easier task as the internal thread was cut in aluminum....

G

I just bought a metric conversion kit for mine so that I can cut metric threads. It's 50 year old stock new in box and cost almost as much as the lathe cost me originally.

I wrote to the Myford factory (recently changed hands) and they sent me a set of instructions for free. Nice people.....

G

That's something I haven't tried yet, threading. I'm pretty sure I have the metric conversion gears too. Lathe was my dads and I remember him saying the pile of gears in a box was for metric threads. One of these days I'll have to try it!

[G-Man]

Greg

You can do simple jobs like bushes with hardly any tooling. Just a couple of lathe tools and a drill chuck. The best way though is to buy a used machine wth as much extra tooling as you can.

G

Greg

It's one of the best purchases you can make for a home workshop. But, it doesn't matter which lathe you buy, it's always too small.... With a bit of ingenuity, you can get by.

The great thing is you get your investment back x10 by repairing parts the you's otherwise have to buy new or pay someone else to repair. Being able to make special tools is also a godsend.

I've had this one for 20 years. Bought secondhand, it is now worth 10 times what I paid. I wish the bikes were such a great investment...... :-)

G

My father has one and I occasionally look around various classifieds to see what is available . He mentioned that the tooling is the expensive part. It is one thing to buy the lathe but as he says having the gear to go with it is important. One day when the time is right.

[sixtiescycle]

Graham,
I'd been wondering what to do with the shocks on my 450D. Looks like I'm going to have to go for threading training sooner than later. Nice fixture for the clevis end.

[G-Man]

Dick

Yes - that little fixture has come in handy and seems to fit most of the Honda shocks (with clevises) despite the fact that CL77 and CB77 have different internal dimensions. The 'jaws of the fixture pick up on the round part of the shock body and keep it central.

The other end is a long 'bung' which is a precise fit in the damper body and allows it to be centred and held firmly for the threading.

Happy to provide details if you need them but judging from the quality of the work you do, I think you'll work it out pretty quickly.

I also cheat with the covers. Girling (or reproduction Girling) covers are indistinguishable apart from a larger diameter hole at the ends which needs a little bush making to keep them central. I also use Girling springs on the CL77 shocks.

In the picture below the left hand pair are all NOS Honda parts (except for the paint) the one on the right (CL72) is restored with genuine (but restored) Honda covers and the middle are my reworked CL77 shocks with Girling covers.




G