60° V-belt?

[68Futura]

Is anyone familiar with this v-belt groove with these dimensions? I can't really find any belts with 60 degree (most seem to be 38 or 40) and at .275" it's shallower than any pulley I've seen. It's on a vintage air compressor that i believe dates at around 1932. Could this perhaps be for some old round belt, rather than a v-type?

 

[4GSR]

Got a lathe? Reshape the vee's to fit a standard section belt of your choice.

 

[68Futura]

Got a lathe? Reshape the vee's to fit a standard section belt of your choice.

I'm not really concerned about correcting it, I'm just curious about it's history. Was it for an obsolete belt v-type belt, a belt other than a v-type, or perhaps some oddball home cut grooves...

 

[4GSR]

My apology for my remark.
I remember cutting pulley grooves way back in life. Seem like the larger the diameter, the more angle you gave the vee. I don't recall 50° more like 40°. Your dimensions almost match up to a A-section belt cross section. It's very possible the manufacturer made it that way for a special belt that could be only purchased from them.

 

[john.k]

I recall MAN busses had a fixed centres belt(generator ,I think) .....very flat and steep angles of the V .....but the big shock was at the parts counter......the belt was $1100 ,and two of (matched set)..........German vehicles tend to have costly spares prices,but that was over the top.

 

[68Futura]

My apology for my remark.

No worries, I should've been more specific. I re-measured, it's actually 60°. I also added a pic comparing it to a typical groove. Thanks for the thoughts

 

[Mtndew]

I'm just curious about it's history

Try searching for books from Browning. There was one book in particular that had everything about them. I can't remember the name of it though. I think it was from the 50's or 60's.

 

[Limy Sami]

IIRC (it was over 50 yrs ago) 60 deg vees were used on wire rope driving pulleys, .............some bigguns were out of steel plate, .probably for one of the papermills

 

[Peter from Holland]

I saw them on woodworking machines a lott
No problem buying them over here
Gates M serie I found

Peter