Bridesmaid continued
Here's how I build along. In this case above, checking from center. Then later cross checking from side to side. Generally I dont care what the measurement is unless Im checking a center. I just gap things and scratch an arc or dot it. Once in a while I drop what I have in my square, for a an over all visual. Helpful when moving from section to section so that the connective tissue stays straight as you progress.
I wound up here. As a Hi-Boy, the standard box motor would have fit between the frame rails. The Lo-Boy required a rethink. An N-30 Neo mini can looked to be workable, and I had the cradle to fit it. The ancient Cobramite Iso arrangement was adapted. Essentially the cradle gets a deep notch on either side, so that the tube frame can pass through. The frfle is free to move up and down. The PTEG braid carrier sandwiches between the motor and the cradle and is simply bent forward at 90 degrees.
Sometimes it seems like I push these things around for ever. Eventually, ya gotta get after the giddy up, and make it go. This usually happens pretty fast, because I've had plenty of time to sort everything out in my head, while I'm dinking with fussy bits of body work.
The rear axle is titanium, I was gifted a stick, so once in a while I use a chunk when I'm feeling it. A Tyco 440 pinion gear is over bored and then under-sleeved for the mini motor shaft. The modified pinion is flipped around and installed in the inverted "shoulder out" position. A hole card from my bag of tricks, when the running gear spacing starts getting tight, and threatens to stall the project. I like the mesh close to the arm shaft bearing anyway.
Much like your childhood Radio Flyer wagon, Cobramite axles ran right through the chassis frame and motor cradle with no bushing. Rather than hanging the chassis on an extended OD of the cradle bearings in a more traditional fashion, I used four separate bushings fabricated from Tyco 440 brush guides.They're soldered in, trimmed flush, bored to size, then reamed as a unit. Finally, the assembly with axle is lapped in, also as a unit.
The ISO pick up is a drop arm of sorts, except that the pivot point is the axle and the motor moves with it, as the pinion walks the crown and pins the pick ups to the rail. All one piece, PTEG has some interesting properties that I like. Insular being the first and foremost, it has just the right amount of stiffness in cross section, and gets more flexible as you lengthen it. You can fold it slice it drill it file it melt it sand it paint it and it's almost free. The ultra bonus is that it's pert near bullet proof.
Were sporting a new 45 degree angle from center for the braid slots, to induce some preload towards the center line. Braids naturally work around and tend to walk outwards from center over time. Thus far the braids are staying inline and have required no grooming.
She's still sporting my rattly front wheel set for mock ups, and the basic grill shell needs some final attention. Otherwise it's wicked fast, sneaky quiet, and the hip line is no longer gotched at the front aprons.
Next up? I'll rally it around a bit more for fun, then take it apart, polish up the chassis, and block out the body.
Thanks for looking
Bill
Where some must die, so that others may live.