Need dimensions for pto clutch lining, C125

[chipwitch 73]

I've seen between .120 and .126 for thickness.  But, I'm looking for ID.  Since I cannot confirm the one I removed was OEM, I want to make sure the one I'm making is correct.  I tried going by the pulley to confirm, but it's got so many grooves, I just don't have the confidence I know where the clutch lining is supposed to end.  Looks like the ID is just under 5".  Call it, 4.950 inches.

 

I'm making one from some cheapo brake pads I picked up at the auto store for 8 bucks.  I had to cut them off with the bandsaw as they weren't riveted.  Glued them on with JB Weld last night after drilling some extra holes in the plate to aid in adhesion.  Turned down the OD and it's looking real nice.  All that's left is the ID and face.  A quick face of the pulley and we'll see how well she holds up.

[Save Old Iron 1,571]

this may give you a visual perspective until we can grab an actual measurement

 

[chipwitch 73]

Thanks SOI... Looks like they're using a wider lining (smaller ID) on the newer clutch.  The radius difference between ID and OD on the lining I removed is roughly 1".  The "after" picture looks like closer to 2".  However, the "before" picture appears to be closer to what I have, proportionally.

 

I think this is what is confusing me.  The pulley is heavily worn from the rivets digging in.  The center area is slightly raised which indicates one of two things.  Either the rivets really wore it down significantly, leaving the center hub area raised about .060" or so OR the lining is narrow (as in the "before" picture) as it would have to avoid making contact with this center raised area when engaged. 

 

Alternatively, the pulley may have been turned down by someone at some point.  My guess is it was not, but it's possible.  No recent machine marks.

 

That raised area means I have a choice to make.  Either I make the ID of the lining 5.1" or so.  (The OD is 6.75").   Or, I can machine down the raised hub area of the pulley to match the clutch face in order to avoid the interference of a wider profile lining.  The latter being my preferred choice as it would give more clutch surface area.  Thoughts?

[chipwitch 73]

I went ahead and faced the pulley.  It wasn't as bad as I thought, but still had to remove .028" to get past the grooves.  I faced the lining just enough to even it out.  It left me with about .260" of lining.  Before taking it down to .125" +.028" I removed off the pulley,  I thought I'd install the clutch to see just how tight it was.  I was surprised at just how much adjustment I could get out of the linkage.  There was more than enough to leave all the lining as is!  That should last a while.  The only problem was the brake.  There's just barely enough adjustment room there to allow for the thicker clutch lining.  Anyway... it's all good.  Installed it.  Adjusted it.  Took a quick test run.  Tiller performed well.  Time will tell if the repair will hold up.  Thanks SOI.  The link you provided gave me the confidence I needed.

[Save Old Iron 1,571]

You have the tools and you have the talent. Love the intrepid approach.

[chipwitch 73]

Sometimes I think its more hindrance than blessing.  It's not something I celebrate.  Perhaps if I had used that "virtue" in pursuit of more than just saving myself the cost of an $80 part...  Oh well...  I just keep telling myself I like learning new things.  I'm a junkie in that regard.  I don't deny there is a spark of satisfaction I get from the confidence in doing things myself (with a lot of help from people like you and the internet).  In a post-mass-produced society, many arts are being lost unfortunately, in the name of cost efficiency.  With a handle like "Save Old Iron" I imagine its a sentiment we can share?  Have you ever wondered what a post-apocalyptic world would smell like for want of a 79 cent bar of soap?  lol

[Save Old Iron 1,571]

  Have you ever wondered what a post-apocalyptic world would smell like for want of a 79 cent bar of soap?  lol

I experienced something very similar in the late 1970's traveling up the northern part of the New Jersey Turnpike. Wild road rage and that smell - that chemical and old organic smell - dissolved the rubber seals in the air conditioning ducts in my 1976 Plymouth Fury. As a young lad coming from the pristine backwoods of Pennsylvania and traveling past the "funk" of the Meadowlands exit was a first time experience not easily erased from my memory.

[Save Old Iron 1,571]

In a post-mass-produced society, many arts are being lost unfortunately, in the name of cost efficiency.  With a handle like "Save Old Iron" I imagine its a sentiment we can share? 

Yes, it is a sentiment you and I both share. Ironically enough, both of us found Redsquare looking for information regarding tillers.

 

The whole "Save Old Iron" concept is one I have been following since my younger years. I spend more time refurbishing old woodworking machines and tools than I do using them - just ask my wife!! She loves to tell the stories on how I will spend a year refurbishing a machine that I will use less than 2 hours rebuilding something around the house.

 

But then I point to the spare bedroom in our house -full, floor to ceiling - with 99 cent wool sweaters from the GoodWill store. Kathy "deconstructs" them and spends countess hours cutting them up and sewing them back into "Hoodies" for our daughters. Literally hundreds of hours spent working with materials others have thrown away - wool and cashmere sweaters hardly worn and discarded by most as "so yesterday." The results can be spectacular. If it helps, I have never owned a new car either.

Edited June 28, 2014 by Save Old Iron

[chipwitch 73]

Wow!  That's one of your wife's creations?  Is she selling those?  They're beautiful! Does she have a website?  Sell them?  Makes me wish I lived up north!  Sweaters are a little inappropriate for south Florida, but...