1982 Matsuura MC-500v Retrofit

chopper79 wrote: One of the things I am having trouble with is finding a reasonably priced steel gear of the right diameter.

How about a cam pulley from a car engine?

I was thinking the same thing and was going to go to a junk yard to see what I could find that might work. Would the reduced amount of teeth cause an problems when it comes to tapping? I would think not but I would like there to be as many teeth as possible for increased ppr.

I have used a 50 tooth encoder with no problems.

andypugh wrote: I have used a 50 tooth encoder with no problems.

That is good to know.... I will be going to the junk yard today to see what they have.

The gear for the encoder will go in this location. The silver collar will need to be removed and the gear will go below this and attach via bolts to the spindle cartridge. This part will have to go back into position so the tool unclamp and clap functions still work.

You will see on the right side of the opening a mounting bracket that is for the pickups for orientation of the spindle. It is held in by (2) socket cap screws. I am going to attempt to use that bracket for mounting my encoder pickups. This will make it more of a factory type install and keep it easy to service in the future.

Here are pictures of part that needs to come off to get the gear in. I am going to find me a gear today and will update with what I found. There will also need to be some machining done to this gear for things to mount and fit well.

Found two pulleys to choose form. I would liked them to be about .375" larger in diameter. Now to machine the insides of them to flatten out the mounting surfaces. They may not even work well either.....

The deep dish one is a 42 tooth (left one) and the other is a 50 tooth (right one). The deep dish one would be the ideal one to use as the dish would give better sensor mounting options. I just worry about it being a 42 tooth gear and it being so low in tooth count. Andy stated earlier that he has used a 50 tooth one before then I suppose the 42 tooth one would work fine as well. I mean its better then what is one there which is a single hall for indexing.

Thoughts?

(I am still looking for a better gear also just in case)