Oshkosh Het M1070, M1000 - Page 4

9W Monighan · #61 06-03-2011, 01:11 PM

Boy, Rapid prototyping really gets the gears turning in my head for my next possible build

Car5858 · #62 06-03-2011, 03:20 PM

Quote:

Originally Posted by sparkycuda

3D Protoprinters are amazingly cool! Are you casting the diff covers in metal or something else? This is a very good build and your workmanship is great. Looking forward to seeing this thing move.

Ken

Thanks Ken, I have not decided on material so far. I have been thinking pewter, but not sure that will hold up. My other thought is JB weld, or liquid metal.

Quote:

Originally Posted by 9W Monighan

Boy, Rapid prototyping really gets the gears turning in my head for my next possible build

Yes Steve it opens up the possibably of parts

ing isn't it

Car5858 · #63 06-04-2011, 07:33 AM

Made the molds using mold putty, came out acceptable. Tried casting with JB Weld, and suprise I have some parts.

The parts will clean up with a file and sand paper.

If I have some parts prototyped again I will raise the resoulation. These parts were set on the lowest resoulation for rendering. Although the resoulation does not show in the rendering photo, it will show up in the printed part.

russisloud · #64 06-04-2011, 11:18 PM

wow, for just using jb weld the parts really don't look too bad

Car5858 · #65 06-05-2011, 02:49 PM

I have to agree Russ, this is what they look like cleaned up. To bad it takes 30 hours to harden before you can file and sand them.

I also tried smoothing out the molds, maybe that will help with finishing on the next one.

I also rotated the pinion mount 22.5 degrees so that the hardware will have more material for threading.

I also attached the swivel connectors.

Just a few steps along, classes start in the morning so I will not be able to work on this much during the week for the next two months.

BigZracingRC · #66 06-08-2011, 12:46 AM

That's Crazy! what company printed that for you!?

Car5858 · #67 06-08-2011, 02:53 PM

Zach, the company is https://printaproto.com/index.php I think it was a reasonable rate.

sparkycuda · #68 06-09-2011, 11:52 AM

Parts turned out great! Excellent detail and overall look is so real. Combination of high-tech (3D printer), low-tech (JB Weld), generous supply of imagination and great workmanship, and we get to see top-level modelling. Well done!

Ken

Car5858 · #69 06-09-2011, 12:33 PM

Thanks for the kind words Ken.

I got a package in the mail the other day, RC4WD Dirt grabber tires. Still waiting on the rims.

My Dad is out of the hospital and is starting on the rims in the morning (weather permitting).

Hopefully in a few days I will have some more photos to post.

Car5858 · #70 06-10-2011, 11:23 PM

The Stamped rims came in from RC4WD today (one bolt missing

). Yes I could not resist the desire to see some tires and rims on this thing.

Mounted the tires on rims, there must be a secret to this part that I haven't figured out so far. The tires wobble slightly side to side as they roll, but not the rims.

As for the rest of the covers I am waiting on more JB weld to arrive

. I did find out the hard way about mixing. Not enough hardner and the cover is to soft and flexiable

.

Oh well, I will start again in the morning.

sneaky-pete · #71 06-10-2011, 11:29 PM

Wow....you have skills

Car5858 · #72 06-11-2011, 12:20 AM

Thanks Troy

rc_farmer · #73 06-27-2011, 11:09 AM

You are doing a fine job on this build. Those diff covers are amzing.

, excellant craftmanship!

Car5858 · #74 06-27-2011, 12:34 PM

Thanks Rob, currently I am awaiting some more parts

that I haven't been able to spend time on this for the last week.

Will get more updates when the parts are finished.

Thanks for looking and the encouragement.

Car5858 · #75 07-08-2011, 07:03 PM

Sample rim came in yesterday,

so I set up the rotary table and was going to install the dividing plate.

Not the right reduction, this table has a 1:46 reduction

cant use the dividing plate. Looked around the net for a 1:46 reduction chart

no one seem to have one.

So as an alternative, I wrapped a 1/4 inch wide strip of paper around the rotary table to get the exact circumference, I then drew this up in AutoCAD and divided the legnth by ten with the divide command. Perfect, added an extra 1/2 inch to the length, plotted and attached to the rotary table.

This is the result, the bolts are 2/56 socket head cap screws. I did miss one hole by 1/2 a degree but it is not that noticeable.

So far I am happy. After assembling I found that I have to change the design of the inner hub to allow the locknut to seat properly.

At least I have made some progress.

Thanks for looking
Carl

ihbuilder · #76 07-08-2011, 09:30 PM

looks good , Carl

Car5858 · #77 07-08-2011, 11:00 PM

Thanks Steve

Took the rim back to my dads and he was shocked that he missed the dimension. He had started on another rim, so the mod will have to wait till he gets the next one done. Luckily Dad only lives 3 blocks away.

Ken Orme · #78 07-09-2011, 01:34 AM

Quote:

Originally Posted by Car5858

Thanks Ken, I have not decided on material so far. I have been thinking pewter, but not sure that will hold up. My other thought is JB weld, or liquid metal.

Yes Steve it opens up the possibably of parts

ing isn't it

I know what JBweld is but what is liquid metal?

Ken