Finnaly sat down and did the drum brake spindle modification to use them for disk brakes...

Luckily I had a set of stock disk brake spindles on loan from a friend to compare & check my measurements on...

Wasn't too hard- getting the measurements and scrubing them on the drum brake arms and then double and triple checking them before i started cutting was the hardest part. Cutting took about 15 mins for both arms.

Still have some filing to do as one of them ended up with a high spot in the middle- but overall pretty happy with it.

Unfortunatly I didn't write down what the measurement that we cut off was- really it was just measuring the heights from the factory disk spindles and transcribing them on the drum units.

I had read here that people would just bolt up the new caliper bracket and rotate it over and mark it- but i found that it tended to have a lot of wiggle room even when bolted tight- so glad i was able to have the stock disk units to compare with.

If anyone wants, tomorrow i can put a straight edge on the stock units again and get a height measurement from the steering arm boss.

just following up- remeasured the stock disk spindles i have-

With a metal straightedge on the RIGHT hand steering arm boss- i get exactly 1/2" above the upper pad.

From the Left hand steering arm boss, its slightly higher (like 1/32" higher)

So anyway, that 1/2" measured from the right hand boss is what i'm using as my spec for cutting down the upper boss.

Good stuff Ben.....Not only is it Budget friendly, you ended up with a much better set up IMHO than the off shore spindles offered currently......Nice Job and thanks for sharing.....:beers:

Actually, every set of spindles I've modified I had to remove closer to .650" off that boss. ;)
You'll need to maintain a drop measured from the spindle shoulder down to that mounting boss of about 3/4".
I just clamp the spindle in a vice on a Bridgeport with the spindle facing straight up and a shoulder parallel to the work table, touch off an endmill on the shoulder, zero out the "Z" readout, and mill the boss down to a drop as indicated on the readout of 3/4".

I just went out on confirmed what Bill posted-

Measuring from the spindle's Shoulder- the top boss pad is down exactly 3/4" :thumbsup:

This still works out correctly for what i was measuring from the right hand boss drop (1/2") but i think his measuring spot is better as its consistant from both sides.

Wish i had someone close by with a bridgeport- would make this a heck of a lot easier... but still pretty doable with hand tools.