Ny-Lint Mobile Dragline Conversion

[Rvjimd]

Tom,

They wrap around pretty good, I am hopeful that they might work better than the old style I tried first.

I know what you mean about the width. I may be wrong, but to fit/clear the lugs on the pads I made them as wide as the base of the lug plus the width of the side walls of the tumbler.

Thought I was going to be testing by now but I busted off a 6-32 tap in the tumbler and screwed it up trying to get it out. Darn I hate breaking taps!

I have a replacement half finished, but got sidetracked the rest of the day getting camping gear ready for the trip out to Brownsville.

With any luck I will get to try one side Sunday.

Jim

[9W Monighan]

Get some #5-40 taps Jim. They are smaller but the finer thread make it easier to tap.

[Rvjimd]

Made some progress this weekend. Here is the new prototype drive tumbler just about ready to go back together for a test. I will make a new wider one with wider side flanges, once I see how it works. I moved the side rail out another 1/4" and made new lower idlers.



Jim

[Rvjimd]

I am reworking the frame rails for my crawler, but, it has a twist in it. Here is a short video that should explain what I mean.

http://youtu.be/0Eqewf_Ekmc

Part of the reason I wanted to rebuild these parts was the same twist in the old parts.

I tried to carefully drill the two sides while clamped together in the mill vise.

I tried to carefully turn the spacers in the lathe. The order was...

Chuck the stock in the 3 jaw, center drill, drill center clearance hole to size.
Turn outside diameter down just enough T to make it round and concentric to the center hole.
Part off. I faced one of them to match the length of the first.

I DIDNT machine the inside mating surfaces of the bar stock.

If I loosen the clamping screws a bit and tweak it as I tighten it is better but I want to try and figure
out what I might be doing wrong.

Jim