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formula offroad jeep build

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Old 07-03-2010, 12:23 PM
  #1
mooman007uk
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Default formula offroad jeep build

finally got started on my FOFF hillclimber, working off pics of a 1:1 called "the clown" driven by Gunnar Gunnarsson...we have disused gravel pits here out the ying yang with some awesome hills so wanted a dedicated rc for the job.
using 4130 chromemoly tube chassis, rampig drivetrain, switched the long rear centre bone to the front so motor will sit back 1 1/8" more and used a longer fr/rear bone at the rear to increase the wheel base also figured a way to brace up the fr/rear axles to make them solid to keep this closer to the real deal. got hpi paddles and ordered some losi 420 paddles to try

hoping it'll end up looking something close to this (and yep it will be pink and purple[&:])



here's some nice frame pics to work from found here on rcu [link]http://www.rcuniverse.com/forum/m_9015383/anchors_9015383/mpage_1/key_/anchor/tm.htm#9015383[/link]

progress so far





once i tack this I can mount the motor and centre diff to build around
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Old 07-03-2010, 01:55 PM
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Default RE: formula offroad jeep build

You can have a look at German forum http://www.rcindependent.com/ ... for having a look
to the pictures it may be necassary to create an account ... but this is the thread from clamsi,
who did a very good job ... actually changed to belt drive and looking for good friction ...

http://www.rcindependent.com/wbb2/th...threadid=28082


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Old 07-03-2010, 05:09 PM
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Default RE: formula offroad jeep build

Ooo this should be good!


I love it when people like yourself who have been around RC's for years build their own.







.
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Old 07-04-2010, 04:12 AM
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Default RE: formula offroad jeep build

looking good mate, i like starting new projects
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Old 07-04-2010, 05:24 AM
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Default RE: formula offroad jeep build


Quote:
ORIGINAL: stiggwelder

i like starting new projects

Haha you're the king of starting new projects.







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Old 07-04-2010, 05:55 AM
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Default RE: formula offroad jeep build

i love starting new projects....





its finishing them i have problems with
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Old 07-04-2010, 06:19 AM
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Default RE: formula offroad jeep build

Should be an interesting build for sure.
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Old 07-05-2010, 10:57 AM
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Default RE: formula offroad jeep build

Quote:
ORIGINAL: funracer

You can have a look at German forum http://www.rcindependent.com/ ... for having a look
to the pictures it may be necassary to create an account ... but this is the thread from clamsi,
who did a very good job ... actually changed to belt drive and looking for good friction ...

http://www.rcindependent.com/wbb2/th...threadid=28082



great idea in there for making paddle tires, may have to try that

few more bits done yesterday, engine plate done and mounted, everything tacked up and started on the cab part, hope to get that done today and start on the back. want to start on my axles but aircraft spruce balls'ed up my order and didn't send the plate i need[&o]

I added 4 more mount tabs on the inside square to beef it up more

got the hardest bends done for the roll bars..rest is a cakewalk from here on apart from the axles


using 2 rear long dogbones so wheelbase is near 2" longer than my rampig and nutech, may have to put in a driveshaft hoop at the back for clearance at full droop




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Old 07-05-2010, 09:47 PM
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Default RE: formula offroad jeep build

cab's done bar side braces. start on the axles sometime tomorrow when my missing steel arrives..hats off to aircraft spruce Canada, shipping it next day at their expense



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Old 07-06-2010, 04:43 PM
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Default RE: formula offroad jeep build

looking good mate, some nice bends there, i used to do the roll bars in one hit but trying to get them the same and fit in a certain width, its easier to do in two half, plenty of beer helps to keep things straight
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Old 07-06-2010, 09:00 PM
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Default RE: formula offroad jeep build

Cool thread, looking forward to seeing more. I've always wanted to see an RC formula off road, especially a giant scale one.
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Old 07-09-2010, 11:03 AM
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Quote:
ORIGINAL: stiggwelder

looking good mate, some nice bends there, i used to do the roll bars in one hit but trying to get them the same and fit in a certain width, its easier to do in two half, plenty of beer helps to keep things straight
Luckily I managed to get the rear roll bar bends right first time but wasn't too bad as they're in one plane, didn't even attempt the front as i knew it would end up uneven(from previous cages I've done) trying to bend in 2 planes.

progress has been slow working on the rear axle...spent last 2 evenings drinking beer staring at it figuring how to get it all lined up..the front will be a pain trying to get lined up with castor. Will probably change out the rear hubs for some vertigo 5b ones eventually. should have rear axle done this evening so will start on the rear cage section next





how it'll end up hopefully

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Old 07-09-2010, 06:18 PM
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Default RE: formula offroad jeep build

Quote:
drinking beer staring at it figuring how to get it all lined up

The most important part of any project.









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Old 07-11-2010, 09:45 AM
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Default RE: formula offroad jeep build

rear axle tacked together and most of the rear frame's done..will need a driveshaft hoop and couple more braces.
I'll tackle the front axle next





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Old 08-06-2010, 01:09 PM
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Default RE: formula offroad jeep build

Quote:
ORIGINAL: Dirty_Vinylpusher
Quote:
drinking beer staring at it figuring how to get it all lined up
The most important part of any project.
i think i am going to run in to a lot of problems lining things up i quit drinking...

i am defiantly digging that idea for the upper "camber" mount though if it had of been me i would have cut it back from the hubs a bit and added some drag links/trv's to add some adjust ability to the camber..... just an idea but a nice looking build either way


the weakest point i see is in the lower differential mount arms i think upon any stress those welds or the tube will snap just me being optamistic i guess (my day always entrusted me build it stronger and make it last longer....) some cross bracing between the lower "arms" should help increase the strength (by no means am i saying your welds are crap just points of stress
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Old 08-06-2010, 10:56 PM
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Default RE: formula offroad jeep build

nice build !!
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Old 08-07-2010, 11:34 AM
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Default RE: formula offroad jeep build

I was going to use rod ends for adjustable camber but decided against it, i figured i'd keep it solid like the full scale ones and as it's for going straight up it doesn't need dialling in like track runners......the front will be the same non adjustable...about 3deg castor and no camber...toe in will be adjustable though.

the lower arms are just tacked on at the moment and there is a bit more bracing to come once I attach the 4 link and shock mounts...i'm using 4130 chromemoly tube with .049 wall so strength definitely won't to be a problem once it's finished up

Figured out how to go about the front end now so just waiting the 6mm male rod ends i ordered a while back..once the front axle is done I'll get busy with the 4 link
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Old 08-07-2010, 01:04 PM
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Default RE: formula offroad jeep build

Very nice build, especial the rear axle.
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Old 08-07-2010, 05:29 PM
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Default RE: formula offroad jeep build

Coming together great sweet project mooman
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Old 08-07-2010, 06:55 PM
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Default RE: formula offroad jeep build

liking it a lot... very, very nice work!!!
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Old 08-07-2010, 09:31 PM
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Default RE: formula offroad jeep build

awesome build moo, very cool. [8D]
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Old 08-07-2010, 09:32 PM
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Default RE: formula offroad jeep build

this looks great! I'm subscribing.
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Old 08-07-2010, 10:19 PM
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Default RE: formula offroad jeep build

Quote:
i am defiantly digging that idea

So someone told you not to dig it and you're rebelling against them by digging it?

[&:]





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Old 12-08-2010, 12:40 PM
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Default RE: formula offroad jeep build

anything new moo ?
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Old 12-08-2010, 02:48 PM
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Default RE: formula offroad jeep build

I've been neglecting this...now my tracks all done and the hurrax is sorted I figured I best start on it again so I dug it out a couple of days ago, I'll cut some steel for the front axle tonight and try and get that and the front end of the chassis done in the next couple of days. I've retired my rampage for now so have everything I need now to finish it...i better get busy
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