Rear isn' up for grabs... yet ;-)You could use the rear wheel though, if you can't find another.
In your pic you can also see the rotor offset adjusting nut behind the axle nut used only on the 72.
It's kinda weird that Yamaha didn't just grab a honda front disk brake and reverse engineer it.
So much info on here, and I'm still confused a tad.
I have a 78' with front and rear disk brakes, with mag's. 19" front and 16" rear. I'm wanting to switch to spokes.
Easy enough fix for the rear. Find a spoke rear drum, and if able get the whole swing arm assembly. Question, what years will fit, 77" and up?!?
If I can only find a 77" and up read spoke drum, will the sprocket align? Will I have to make/mill spacers?
As for the front, from what I have read. The easiest would be to find a 77" and up spoke wheel with disk, and it should work, is this correct?
And if i go lower than a 77" hub/wheel it will require what?
Hi '_brat,
we did that on my son's '80 Special.
Any '74 or newer front will drop right in.
'76 or older will need a one-piece brake disk to replace it's 2-piece brake disk because their offsets are different.
'73 fronts are their own thing and just won't work with different year forks.
Any year drum rear will fit in your swingarm, spacers and all.
Note that all the good-looking rear drum wire wheels have 18" rims but you can certainly
lace a different diameter rim onto it's hub.
You'll have to weld a second lug to your swingarm to suit the drum rear's different torque stay and get a complete
drum rear brake operating assembly to replace the rear disk set-up. The only common part is the pedal.
We gave up on making the rear brake light switch work and wish you better fortune.
And yeah, carefully save all the rear disk parts so you can swap back to the artillery wheels if you choose to.
Sorry Fred, Have to disagree on the 73 Hub. 73 Rim was chrome and that changed to alloy w profile style rims in 74................73 hub was retained and the same used on all front 36 spoke wheels till the 82 gazillion spoke wheel
Hub sold to me as an XS650 front hub. Same size axle speedo, just 6 1/2 mm narrow. Could be used by adding 3mm spacers on each side.
View attachment 116082View attachment 116083 View attachment 116084
http://www.tcbroschoppers.com/brake-pivot-for-forward-control-linkage.htmlHi '_brat,
we did that on my son's '80 Special.
Any '74 or newer front will drop right in.
'76 or older will need a one-piece brake disk to replace it's 2-piece brake disk because their offsets are different.
'73 fronts are their own thing and just won't work with different year forks.
Any year drum rear will fit in your swingarm, spacers and all.
Note that all the good-looking rear drum wire wheels have 18" rims but you can certainly
lace a different diameter rim onto it's hub.
You'll have to weld a second lug to your swingarm to suit the drum rear's different torque stay and get a complete
drum rear brake operating assembly to replace the rear disk set-up. The only common part is the pedal.
We gave up on making the rear brake light switch work and wish you better fortune.
And yeah, carefully save all the rear disk parts so you can swap back to the artillery wheels if you choose to.
That is the proper bolt-on disc type you're after but I can't tell from the pics if it's a 650 one or the narrower 360/400/500 type. The guy (or you) will have to measure it across the spoke flanges. Outside to outside should be about 56mm. The "wrong" smaller hubs would be less between the outsides of the flanges, as shown in Skull's pics.
OK, but center to center of what ???? The measurement he gave you is of no use and meaningless without that info. This is the measurement you need to verify, outside of one spoke flange to the outside of the other .....
http://www.tcbroschoppers.com/brake-pivot-for-forward-control-linkage.html
would this fix the issue?