Disc brake conversion, '50 F5 Marmon-Herrington
#36
Wow...beautiful work Mark! Thank you! I look forward to seeing the next phase.
I did acquire a set of 6 lock-ring wheels off a late 40s Dodge truck. They are 5 inches wide. I wish they were 6 inches. But, I got to a point that I'll take what I can get. I think 3/16 inches is plenty of room between the wheel and caliper. I cannot imagine the wheel flexing that much.
I got to thinking about lubricating the front wheel bearings and more importantly the CV joints. Could a couple of Zerk fittings be added while this stuff is apart such that I can easily grease these things in the future?
Nelson
I did acquire a set of 6 lock-ring wheels off a late 40s Dodge truck. They are 5 inches wide. I wish they were 6 inches. But, I got to a point that I'll take what I can get. I think 3/16 inches is plenty of room between the wheel and caliper. I cannot imagine the wheel flexing that much.
I got to thinking about lubricating the front wheel bearings and more importantly the CV joints. Could a couple of Zerk fittings be added while this stuff is apart such that I can easily grease these things in the future?
Nelson
#37
More progress photos
the back side of the hub showing the modifications for the rotor mounting flange, the surface was machined true to the bearings and a step was machined for a pilot for the flange to locate on.
hub side of rotor mounting flange. 5 pockets are for the heads of the lug bolts, 10 of the 1/2-20 threaded holes are for the rotor and 5 are to fasten the flange to the hub. also shown is the pilot ring machined in the outside edge to center the flange on the hub
rotor mounting flange on hub
rotor mounting holes modified for flat head cap screws
Rotor fastened to mounting flange with 10 1/2-20 flat head socket head caps
#38
still more
this is one of three of the M-H seal retaining clips. the rotor mounting flange eliminates these.
rotor and hub assembly mounted on spindle. you can see the hub sandwiched between the rotor mounting flange and the wheel spacer. the next photo shows the wheel spacer and the 5 1/2-20 socket head cap screws fastening the rotor mounting flange to the hub.
caliper to wheel clearance
caliper to wheel clearance thru the hand hole. there is 3/4"+ clearance between the wheel and caliper
Thanks, Mark
#43
Fittings to adapt the brake hose to the caliper
This is the hose adapter fitting that I used on my truck. This fitting would possibly cause the hose to rub the drag link.
The fitting on the right is the M-H fitting. The fitting on the left is same as the fittings I used on my truck.
This is the revised fitting for the M-H. It will allow the hose to arch up and over the drag link.
Thank you all for your interest in this project, Mark
#44
Absolutely gorgeous, Mark. So much investment time in design and engineering. As few MHs as are around you must not have planned to do this commercially. But as brake drums on big trucks become more and more scarce there could well be a market on the 2wd trucks. And I'll mention too, the front drums on the F-2/F-3 M-Hs are unique and suffer the same .020" spec standards as stock F-3 drums. Even though there are fewer yet of F-2/F-3 M-Hs, there are few good spare drums in existence. I got lucky and have a good set, but the others might not be so lucky. Might be a future project. Stu