Belts

[mywaymfg]

Anyone know what the belt size should be between the motor and transmission on my 58

[Ricks]

Short Belt BX25
Long Belt BX75

[mywaymfg]

Thanks for the info ,between this site and Wayne this project should be smooth going!

[Vince]

Rick,

Would you happen to know the belt size for a 1947 model? I would assume the earlier models are different than the the later automatics.

Vince

[admin]

Rick,

Would you happen to know the belt size for a 1947 model? I would assume the earlier models are different than the the later automatics.

Vince

Sorry, I don't.  When you find out, please post it for future reference.

Rick

[Mike Sal]

Anybody know what modern part numbers relate to both of the belts used on late model bikes.  I stopped by the farm store yesterday (had to buy more nails for the building) & the kid behind the counter just had a puzzled look on his face when I gave him those "BX25 & 75" numbers.
Mike Sal

[Ricks]

Mike, each manufacturer uses their own part number.  A B belt is 5/8 wide, the X stands for cogged, and the inside length number is the last digits.  B belt outside length is the number plus 3 inches. A BX75 has an outside length of 78 inches.

Rick

[Mike Sal]

Makes sense.  I'll check at another farm store that typically has older guys. I had forgotten to take the old belts (which are in good condition, but just really old) with me & the kid was clueless.
Mike Sal

[mywaymfg]

I read a post by Larry on another topic stating that the older style bolt on pullys were a smaller diameter , would this effect belt size ? All Wayne sells are the older style as replacements for the clip ons.

[LARRYBROWN]

 Hello ,,, I was refering to my old simplex step through scooter,...   The early ones had a bolt on pulley and about 1959 started to weld on a larger pulley directly on the pressed ( or spun ) steel rim ,    also later models had larger diameter  Idler pulleys ,    There were on the servicycles , at least a couple sizes of intermediate pulleys, member clwebster just purchased a primary belt from wayne, so I think that one would fit yours, ,,,,,,best to measure ,   I keep pieces of broken belts to wrap around pulleys to measure and get greatest accuracy,    Best wishes ,,,,, : Larry.   p.s.   glad your engine is running ,  that must have been a real brain squeeze !    You get at least 10 gold stars for trying and an A+ for effort !     

[mywaymfg]

Thanks Larry, my attention has turned to staying at the lake in our rv and trail riding with the kids and all that summer stuff. I'll finish the bike this winter I hope , see you all at some events next summer !

[Mike Sal]

It appears the clip on rear pulley (I've not seen any that were welded on) was introduced in '55 or '56  As far as I can tell from photographs, it's the same diameter as the bolt on pulleys.  My clip on pulley measures 21.25 inches in diameter.
Mike Sal

[LARRYBROWN]

Hi there ,,, the pulleys were welded on the late model motorscooters ,  not the servicycles ,   the pulleys were bigger and they made for a better drivability,

[james c]

are these belt sizes for the servicycles? or scooters? looking for a belt source and brand name including sizes for
my serial 13797 servicycle. thanks in advance

[Ricks]

Those belts I posted above are for any Simplex Automatic.  Most auto parts stores should stock these.