Tumbler

[prifral]

My work in progress Unimog build that started out as a 2.2 but turned into a 1.9. My first crawler was a 2.2 but after going on a bunch of runs, most guys had 1.9 rigs so I decided to go that route with this build. Here goes....

Initial inspiration

The idea was to have a tubed frame and cab that bolted to each other this is the frame


Used a Tamiya body to.....
...take a mold impression
Heres the front clip with the cab cage.


Then decided to go with 1.9's!

Then woke up one morning and decided to chop it all up....

...and make a 4 seater
As of this post this is the current status. Done with brazing for now (more to come later for details). Gonna wire it up and test run it to see if mods need to be made for clearance etc.

[rcjunky3]

very cool looking rig lot of nice work

[slowroller]

Looks great, I'm in the middle of the same build but got stuck on the axles. I wanted to use the worm drive Comp losi 25/1, still in the works.
Hope to see you out at a GTG soon.

[difflocker]

Gotta love those MOGS! Looking good!

[prifral]

Looks great, I'm in the middle of the same build but got stuck on the axles. I wanted to use the worm drive Comp losi 25/1, still in the works.
Hope to see you out at a GTG soon.

I have a set of those Comp axles on stand by incase these T-Rex's don't work out. Wanted to try Rex's first since my current Rock Force based crawler devours batteries like there's no tomorrow cuz of the worms - usually 3x the battery of a comparable rig using a normal axle setup on scale runs!

Definitely going to watch your build to see how you decide to setup those axles on your rig for future reference.

[prifral]

very cool looking rig lot of nice work

Gotta love those MOGS! Looking good!

Thanks!

[CRAWLNB4ME]

what did you use to make the mold?

[prifral]

what did you use to make the mold?

The blue stuff you see in that photo is silicone rtv rubber. After it hardened on the master(tamiya shell), I backed the rtv with some bondo and wood dowels. This is to help the rtv retain its shape as I make parts from it.

[CRAWLNB4ME]

then you fiberglassed the hood?


that a great idea...

lol, I...
never thought of that

[CRAWLNB4ME]

what did you spray on your mold to not have the resin stick?

[prifral]

then you fiberglassed the hood?


that a great idea...

lol, I...
never thought of that

what did you spray on your mold to not have the resin stick?

Yeah right now that hood is made of 50/50 bondo and resin with glass imbedded. Its super strong but on the heavy side. When I make the final part it will be more glass and less bondo/resin to make it lighter.

No release spray is necessary, thats the nice thing about rtv - almost nothing will stick to it.

[Illeagle]

that cage work is ridiculous. lovin it man.

[GmanBill]

that cage work is ridiculous. lovin it man.

Yeah so do I, how much torch time do you have in to the cage? are you doing it with a Oxy/acetylene torch or a smaller one?

[prifral]

Yeah so do I, how much torch time do you have in to the cage? are you doing it with a Oxy/acetylene torch or a smaller one?

Thanks guys. I enjoy metal working so torch time is not really something I keep track of. I use a jeweler's oxy/acet torch so technically torch time is very short since the heat is so precise. Probably no more than 10-20 seconds for each joint max, most joints take as little as 5 seconds. The most time consuming part is measuring, bending and cutting. I try my best to be within 2mm tolerance.

[prifral]

First test run. 55t-> http://www.youtube.com/watch?v=uTr1hwR7jg4

[prifral]

Some progress.

[prifral]

a bit more tube work

[FROADER]

Looking good, Markham!

[towtruckmikey]

O.k. very nice work, but I gotta ask... whats with the Pac-Man guy?

[prifral]

Looking good, Markham!

O.k. very nice work, but I gotta ask... whats with the Pac-Man guy?

Thanks! Just using the ghost to hold the front up for photos.

[prifral]

Some photos from test running


Vid (the beeping is me adjusting the dig trim) http://www.youtube.com/watch?v=HR2fmSb3A00

Hope to be in powdercoat this week then its time for scale details!

[terrioso]

That is one hell of a nice rig you have....looks and performs great! Where was the video shot at,I'd like to check that spot out.

[prifral]

That is one hell of a nice rig you have....looks and performs great! Where was the video shot at,I'd like to check that spot out.

Thanks. The place is the Torrey Pines Gliderport.

[prifral]

Blasted and ready for powder.


Powder coated - olive drab.

[HB_CRAWLER]

WOW that is awsome great work!!!!!

[Illeagle]

Oh cummon bro that is SICK!!!!

[GmanBill]

isn't it done yet, I am getting impatient.

[prifral]

WOW that is awsome great work!!!!!

Oh cummon bro that is SICK!!!!

isn't it done yet, I am getting impatient.

Thanks guys. Now that the difficult part is done I'm looking forward to taking this on some runs pretty soon for some rock rash

[ZoSo]

[QUOTE[/QUOTE]

do I see another Willys in the background....finish up this mogg .....so you can start on that Willys

[prifral]

Will be a while until the willy gets its turn cuz i gotta build another mog for a customer after this one is wrapped up.