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08-30-2006, 07:22 PM
| #1 |
| Newbie Join Date: May 2006 Location: U.S.A
Posts: 34
|  tube chassis
just how sturdy are tube chassis? i was planning to make an all tube crawler but i'm wondering if the cage could take a hit of more than just rolling over... i'd be using the least expensive material for the purpose but it will most likely be brass or steel..... any ideas?
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08-30-2006, 07:32 PM
| #2 |
| I'm a stupid C U N T! Join Date: Jun 2005 Location: In the Garage!
Posts: 4,307
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lot of people use brake line or solid rod to make theirs. solid being stronger but heavier and harder to bend and shape. for a small rig like a 2.2 brake line would probably be fine
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08-30-2006, 07:38 PM
| #3 |
| RCC Addict Join Date: Aug 2005 Location: VARCOR
Posts: 1,826
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The strength of a tuber lies in the bracing. The actual material, on its own, can be very weak, but with proper support from bracing, it can be more than strong enough for your rig. Simple 3/16"-5/16" brakeline will be plenty strong enough for a RC rig. |
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08-30-2006, 08:03 PM
| #4 |
| Rock Crawler Join Date: Jan 2006 Location: In the basement
Posts: 929
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I think it was Double J who said his son fell on one of the tubers he was building for a customer and didnt even bend it.
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08-30-2006, 11:18 PM
| #5 |
| Rock Crawler Join Date: May 2005 Location: omaha
Posts: 858
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I use brake line for my tubers. My test to see if they are strong enough is stand on it. If it doesn't bend I take it out and through it as high as I can in the air, letting it bounce on the street. If it makes it through those 2 tests, I figure there is nothing that will hurt it at 4 miles an hour  . Never had one cr*p out on me crawling yet |
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08-30-2006, 11:57 PM
| #6 |
| Nope..   Join Date: Aug 2005 Location: Whiteland, Indiana
Posts: 1,849
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Mental note to self. Don't buy a tuber from RD400...... |
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08-31-2006, 12:55 AM
| #7 |
| I wanna be Dave Join Date: Sep 2005 Location: USA
Posts: 11,196
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I put over 300lbs on my Moon Buggy and my Jeep Chassis. Didn't faze them.
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08-31-2006, 09:10 AM
| #8 |
| I wanna be Dave Join Date: Dec 2005 Location: between heaven and hell.
Posts: 3,367
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I'm 6'1" weigh around 225 I can stand on my brake line tubers and do a little up and down bounce. Nothing moves. I think it will be more than strong enough. |
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09-01-2006, 04:11 AM
| #9 |
| Newbie Join Date: May 2006 Location: U.S.A
Posts: 34
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ok so its how you support it not what its made of.... thanks for the info.... looks like im going to buy some line and start brazing...  |
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09-02-2006, 10:34 PM
| #10 | |
| RCC Addict Join Date: May 2006 Location: Roseville
Posts: 1,469
| Quote:
Some of the better tuber designs I have seen out there I would imagine could support a car tire resting on it (still on the car) if the tire was settled onto the chassis evenly. | |
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09-02-2006, 10:46 PM
| #11 |
| Pebble Pounder Join Date: Aug 2006 Location: Suffolk
Posts: 183
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Just think triangles, look at full scale rigs, they are completely triangulated. Why? Because triangles are the strongest geometric shape, they resist compressional forces better because they disperse the load down the sides rather than having to deal with a load in the middle of a side which would collapse the structure. Hope that made sense, always makes sense to the person writing it...
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09-02-2006, 10:49 PM
| #12 |
| RCC Addict Join Date: May 2006 Location: Roseville
Posts: 1,469
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You are exactly right. Take a look at any steel arch bridge. Triangles support that arch and all the substructure is triangles of various sizes.
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