norvalwilhelm
Well-known member
I started with a 2 1/8th inch piece of 6061 T6 10 inch diameter aluminum weighing 16 1/2
pounds and costing about $80.
I put it on a big industrial lathe and take 1/2 inch per diameter cuts and cut it down
to close
to final dimensions leaveing a slight cleanup cut for home to fine tune the hat.
Took about 1 1/4 hours to machine the plank but no holes.
The hat now weights 3 1/4 pounds.
I used a computer program to lay out the holes, the 5 lug holes and the 18 mounting holes
I screwed up one of the x and y addresses and drilled a spare hole, ticked me right off
but couldn't do anything about it. It will not interfer or show so I can leave it.
I also have a lip in the inside to center the rotor. Drill takes about 1/2 hour using the
x and y digital readout.
I used button head screws, 18 of them to attached the rotor to the hat. Once both pieces
are bolted together I will mark their relationship to each other for future taking apart
and putting back together. I will then machine everything as a unit to guarantee trueness.
The weigh so far is a touch under 18 pounds or stock weight.
I will still get in there and remove weight. I will also balance the assembly before
installing.
I did a post on balancing a year ago and ran into so much criticism I am leary about
reintroducing how to do it.
pounds and costing about $80.
I put it on a big industrial lathe and take 1/2 inch per diameter cuts and cut it down
to close
to final dimensions leaveing a slight cleanup cut for home to fine tune the hat.
Took about 1 1/4 hours to machine the plank but no holes.
The hat now weights 3 1/4 pounds.
I used a computer program to lay out the holes, the 5 lug holes and the 18 mounting holes
I screwed up one of the x and y addresses and drilled a spare hole, ticked me right off
but couldn't do anything about it. It will not interfer or show so I can leave it.
I also have a lip in the inside to center the rotor. Drill takes about 1/2 hour using the
x and y digital readout.
I used button head screws, 18 of them to attached the rotor to the hat. Once both pieces
are bolted together I will mark their relationship to each other for future taking apart
and putting back together. I will then machine everything as a unit to guarantee trueness.
The weigh so far is a touch under 18 pounds or stock weight.
I will still get in there and remove weight. I will also balance the assembly before
installing.
I did a post on balancing a year ago and ran into so much criticism I am leary about
reintroducing how to do it.



