RCCrawler Forums

prifral · 09-11-2011, 10:00 PM

Quote:

Originally Posted by SDheavymetal

What kind of binder do you use?

By binder im assuming you mean resin. Scrap prepreg carbon was used that was leftover from a UAV project... been a while since that project so I cant quite recall what the specs were.

Quote:

Originally Posted by brianw

I want to know more about this bracket!!

This is still in the testing phase. We are currently experimenting with material thickness. First iteration was way too strong/stiff so we are subtracting layers now and may even try Kevlar for more flex.

Quote:

Originally Posted by sierrajim

Did you use a top hat section (roofing beam) for the mould?

Haha didn't think of that one. We used an aluminum tool.

brianw · 09-12-2011, 08:28 PM

Quote:

Originally Posted by prifral

This is still in the testing phase. We are currently experimenting with material thickness. First iteration was way too strong/stiff so we are subtracting layers now and may even try Kevlar for more flex.

If you need any test dummies (or just a dummy) feel free to shoot me a pm!

benzoel · 09-12-2011, 08:41 PM

Liking the truck no need to watch movie now just gonna watch your build also like those sides lmk when ready or like Brian said I am a good test dummy

heinie_21 · 09-13-2011, 12:07 AM

this will be fun to watch! can't wait to see it stealin a car!

boostamante · 09-20-2011, 08:49 AM

Amazing! So did this build ever get done?

prifral · 09-20-2011, 10:58 PM

Quote:

Originally Posted by boostamante

Amazing! So did this build ever get done?

Been too busy lately - will resume asap... after vacation

richierm · 09-21-2011, 03:01 AM

can't wait to see it!! nice project!
how did u bend your tubes? they're just perfect!

Bulldog · 09-21-2011, 11:56 PM

Prifral, nice to see you're in SD. Great build so far. Awesome bends and attention to detail.

stelerzman · 10-10-2011, 04:54 PM

Amazing craftsmanship. Can we see some pic's of the home made tubing bender. I'm sure it's crude but functional.

.

prifral · 11-28-2011, 10:08 PM

Yey finally getting some time to work on this. In my last post I mentioned that the scale had to be corrected because something happened to the drawing when I plotted it resulting in it being way too small.

As you can see the new size(left drawing) is substantially bigger than the original(right drawing). Too bad cuz it took quite a bit of chromoly to figure out the bends on the first go - maybe Ill build an MRC based Mongo later using all that scrap

So tonight was spent on dialing in the difficult bends on the new size. Next step is to do the whole side profile in one continuous tube.

Hate to say it but the Wraith axles may be a better width for this build. I was really resistant to this idea in the beginning because these axles are just way too wide for my taste in crawling terrain - but I think I can learn to live w/it. As you can see the SCX10 axle is just way too narrow for the new Mongo drawing.

ser3100 · 11-29-2011, 09:39 AM

Whoa! thats a bid arse cab! Cant wait to see it all put together!

ablaydes · 11-29-2011, 09:58 AM

Subscribed

adamargue · 11-29-2011, 10:24 AM

Looks cool man youve always had nice builds sure this will be the same

msd44 · 11-29-2011, 10:46 AM

I finally just watched the movie. Can't wait to see this in in action!

prifral · 11-29-2011, 03:38 PM

Thanks guys. I haven't seen the movie - maybe I should

Ensuring that these two hoops were exactly the same took a long time but I'm happy to say that they are absolutely symmetrical in every dimension

prifral · 11-29-2011, 08:46 PM

Trimmed the hoops and prepped it for brazing. Also cut some smaller diameter stainless steel tubing to fit the ID of the 4130 for alignment and strength.

Brazed and de-fluxed

Also should point out that I drilled a tiny hole in each hoop to prevent blowout during brazing.

To illustrate the precision of the bends - as you can see in the photo the tube is totally flat and its like this all the way around the braze joint

Bulldog · 11-29-2011, 10:35 PM

Nice progress pics of the cagework. Looks very clean and precise.

Absurd · 11-30-2011, 12:38 AM

Looks good waiting to see this finished.

prifral · 11-30-2011, 09:17 PM

Finished up the side of the cab tonight. All the tubes used here were the stainless steel because they are thinner walled hence half the weight of the 4130. The SS is not as strong as the perimeter 4130 but I dont anticipate these members to take direct impact so it should be ok.

A close up of one to show the joints. My sandblaster is torn apart right now so I just did a quick spray of metal prep to clean it up a bit.

The Infidel · 11-30-2011, 09:30 PM

This is looking great so far... love the attention to details.

10-10-2011, 04:54 PM	#49
stelerzman I wanna be Dave Join Date: Sep 2009 Location: n. palm beach Posts: 4,123	Amazing craftsmanship. Can we see some pic's of the home made tubing bender. I'm sure it's crude but functional..

LinkBacks (?) LinkBack to this Thread: http://www.rccrawler.com/forum/1-9-scale-rigs/332988-mongo-built-specifically-steal-exotic-cars-off-speeding-train.html
Posted By	For	Type	Date
TIMBERJACK 480B DEBUSQUEUR	This thread	Refback	03-01-2013 05:51 AM
"Mongo" - page 3	This thread	Refback	03-01-2013 03:38 AM
RCFansÒ£¿ØÃÔ\|RCFansÂÛÌ³ - Powered by Discuz!	This thread	Refback	02-17-2013 08:33 AM

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

09-12-2011, 08:41 PM	#43
benzoel Quarry Creeper Join Date: Mar 2011 Location: queen creek az Posts: 249	Liking the truck no need to watch movie now just gonna watch your build also like those sides lmk when ready or like Brian said I am a good test dummy

09-13-2011, 12:07 AM	#44
heinie_21 RCC Addict Join Date: May 2011 Location: Utah County Posts: 1,802	this will be fun to watch! can't wait to see it stealin a car!

09-20-2011, 08:49 AM	#45
boostamante Pebble Pounder Join Date: Feb 2008 Location: Los Angeles, CA ( South Central ) Posts: 129	Amazing! So did this build ever get done?

09-21-2011, 03:01 AM	#47
richierm Newbie Join Date: Mar 2011 Location: Rome Posts: 24	can't wait to see it!! nice project! how did u bend your tubes? they're just perfect!

09-21-2011, 11:56 PM	#48
Bulldog I wanna be Dave Join Date: Dec 2009 Location: Outside DC Posts: 2,997	Prifral, nice to see you're in SD. Great build so far. Awesome bends and attention to detail.

11-28-2011, 10:08 PM	#50
prifral Rock Crawler Join Date: Oct 2009 Location: San Diego Posts: 599	Yey finally getting some time to work on this. In my last post I mentioned that the scale had to be corrected because something happened to the drawing when I plotted it resulting in it being way too small. As you can see the new size(left drawing) is substantially bigger than the original(right drawing). Too bad cuz it took quite a bit of chromoly to figure out the bends on the first go - maybe Ill build an MRC based Mongo later using all that scrap So tonight was spent on dialing in the difficult bends on the new size. Next step is to do the whole side profile in one continuous tube. Hate to say it but the Wraith axles may be a better width for this build. I was really resistant to this idea in the beginning because these axles are just way too wide for my taste in crawling terrain - but I think I can learn to live w/it. As you can see the SCX10 axle is just way too narrow for the new Mongo drawing.

11-29-2011, 09:39 AM	#51
ser3100 RCC Addict Join Date: Feb 2006 Location: Bellflower, CA Posts: 1,028	Whoa! thats a bid arse cab! Cant wait to see it all put together!

11-29-2011, 09:58 AM	#52
ablaydes Rock Stacker Join Date: Sep 2011 Location: Fredericksburg Posts: 56	Subscribed

11-29-2011, 10:24 AM	#53
adamargue RCC Addict Join Date: Nov 2009 Location: Tulsa Posts: 1,667	Looks cool man youve always had nice builds sure this will be the same

11-29-2011, 10:46 AM	#54
msd44 Rock Crawler Join Date: Dec 2007 Location: Maple Grove, MN Posts: 803	I finally just watched the movie. Can't wait to see this in in action!

Sponsored Links

11-29-2011, 03:38 PM	#55
prifral Rock Crawler Join Date: Oct 2009 Location: San Diego Posts: 599	Thanks guys. I haven't seen the movie - maybe I should Ensuring that these two hoops were exactly the same took a long time but I'm happy to say that they are absolutely symmetrical in every dimension

11-29-2011, 08:46 PM	#56
prifral Rock Crawler Join Date: Oct 2009 Location: San Diego Posts: 599	Trimmed the hoops and prepped it for brazing. Also cut some smaller diameter stainless steel tubing to fit the ID of the 4130 for alignment and strength. Brazed and de-fluxed Also should point out that I drilled a tiny hole in each hoop to prevent blowout during brazing. To illustrate the precision of the bends - as you can see in the photo the tube is totally flat and its like this all the way around the braze joint

11-29-2011, 10:35 PM	#57
Bulldog I wanna be Dave Join Date: Dec 2009 Location: Outside DC Posts: 2,997	Nice progress pics of the cagework. Looks very clean and precise.

11-30-2011, 12:38 AM	#58
Absurd Quarry Creeper Join Date: Feb 2011 Location: Forbestown, CA Posts: 417	Looks good waiting to see this finished.

11-30-2011, 09:17 PM	#59
prifral Rock Crawler Join Date: Oct 2009 Location: San Diego Posts: 599	Finished up the side of the cab tonight. All the tubes used here were the stainless steel because they are thinner walled hence half the weight of the 4130. The SS is not as strong as the perimeter 4130 but I dont anticipate these members to take direct impact so it should be ok. A close up of one to show the joints. My sandblaster is torn apart right now so I just did a quick spray of metal prep to clean it up a bit.

11-30-2011, 09:30 PM	#60
The Infidel Newbie Join Date: Oct 2011 Location: Dickinson Tx Posts: 46	This is looking great so far... love the attention to details.

RCCrawler Forums

Thread: MONGO - built specifically to steal exotic cars off a speeding train