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08-25-2009, 04:28 PM | #1 |
RCC Addict Join Date: Jun 2009 Location: QLD, Australia
Posts: 1,512
| Independant Suspension Rig
I have been fiddling with the idea of a IS rig. I figured there would be a lot of places where it would work brilliant. And of course with an IS rig there is no torque twist:-P. So you don't need MOA. The way I am trying to build it is like a trailing arm, not the ordinary wishbone set up on most RCs. Although this receives amazing flex, you have to have super tight tolerances or it will flex in all the wrong ways. Although I have mocked it up with ax10 parts, I will most likely build it with 1/8th buggy parts. Well at least the knuckles and cvds. I am hoping that hpi nitro rs4 mt2 diff cases fit the ax10 lockers. I know they fit the gears and bearings, but not sure on the lockers. If you have any ideas, recommendations or just feel like saying it won't work (if you do and I finish it I will come and drive all over your rig with it) please post Some pics Kieren |
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08-25-2009, 04:43 PM | #2 |
RCC Addict Join Date: Jan 2009 Location: Crawlifornia
Posts: 1,941
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With that on both sides I dont see room for the drive shaft to fit and have full movement. |
08-25-2009, 04:51 PM | #3 |
Quarry Creeper Join Date: Apr 2009 Location: Isanti, Minnesnowta
Posts: 331
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maybe if you cut that spacer in half and split the diff. on each side it would provide more clerance in the middle for the drive line. awsome look and very cool idea though, keep use posted, could be very interesting concept. Last edited by TomEGunn; 08-25-2009 at 04:53 PM. |
08-25-2009, 04:54 PM | #4 |
I wanna be Dave Join Date: May 2007 Location: Fairfield ME
Posts: 3,886
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Reminds me of.... |
08-25-2009, 04:59 PM | #5 |
RCC Addict Join Date: Jun 2009 Location: QLD, Australia
Posts: 1,512
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08-25-2009, 10:10 PM | #6 |
Quarry Creeper Join Date: Jun 2008 Location: Hell
Posts: 399
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Oh ok. Yea alot of desert buggies and sand rails have that kind of suspension in the rear. That's a cool idea, I always thought it would be cool to build something like a lunar rover.
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08-25-2009, 11:05 PM | #7 |
Rock Stacker Join Date: Mar 2008 Location: 734
Posts: 63
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that is going to be badass when its done
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08-25-2009, 11:13 PM | #8 |
Rock Crawler Join Date: Dec 2007 Location: GILBERT
Posts: 751
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the only things i can bitck about would be the diffs i assume are going to be attached to the chassis which will put some weight at a pretty high cog(not on the axles) and might drag on the ground at full droop. another thing would be if you plan on running it as a shaftie then you will have a trans on the chassis. again raising the cog. dont let me discourage you though,i think this could be badas$ KEEP IT GOING! |
08-26-2009, 01:27 AM | #9 |
RCC Addict Join Date: Jun 2009 Location: QLD, Australia
Posts: 1,512
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The diffs are the least of my worries at the moment. It is try to stop these link flexing side to side:? When I have some I will post updates Kieren |
08-26-2009, 07:58 AM | #10 |
Suck it up! Join Date: Mar 2008 Location: Arkansas
Posts: 11,652
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Not to poo-poo on your idea here, but I don't know if I'd want that setup in the front. It just looks way to easy to bend or break if any force were to be applied in the wrong direction. In that 1:1 pic, I can just see a front wheel coming into contact with something and folding the suspension back. There just isn't enough triangulation going on there to distribute the load. In a slow moving crawler it might be ok... Don't misunderstand me, I think its a cool idea, it just needs worked out some more. If I get some time this afternoon I'll see if I can whip up a pic of what I'm thinking... |
08-26-2009, 10:47 AM | #11 |
Picky Fab'r/Acetal Junky Join Date: Jul 2006 Location: Arizona Desert/AJ
Posts: 3,073
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So, are you going to build hybrid axles with the diff in the center like a Poulson or will the diffs be attached and part of the chassis in some way with only the transaxle halfshafts moving up and down with the suspension cycle like whats going on in that pic of the 1:1?
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08-26-2009, 11:07 AM | #12 | |
RCC Addict Join Date: Jan 2008 Location: Lake Michigan
Posts: 1,898
| Quote:
So Pede halfshafts or maybe MIP Driveshafts for the MRC (4x$35) but would be smooooooth going to each wheel and give you halfshaft extension you would need during flex. For the mini, but would handle individual wheel torque. http://www.miponline.com/MIP/l-a18-r...20April%20.pdf | |
08-26-2009, 04:36 PM | #13 | |||
RCC Addict Join Date: Jun 2009 Location: QLD, Australia
Posts: 1,512
| Quote:
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Kieren | |||
08-26-2009, 04:43 PM | #14 | |
Picky Fab'r/Acetal Junky Join Date: Jul 2006 Location: Arizona Desert/AJ
Posts: 3,073
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Hurry up with this one....so I can steal some ideas Like you said...if it sucks as a crawler, it'll sure make a nice go-fast of some kind. FYI...in your pics of the travel...you will more than likely not get even close to that much droop out of it unless you can find some axle/half shafts that have a very high angle of movement. Last edited by Offroader5; 08-26-2009 at 04:47 PM. | |
08-26-2009, 04:49 PM | #15 |
Quarry Creeper Join Date: Mar 2009 Location: Torrance, CA
Posts: 492
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Use the RC4WD portal hubs! That would be awesome! Kinda like a Humvee.
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08-26-2009, 04:54 PM | #16 |
RCC Addict Join Date: Feb 2008 Location: Crawlerado
Posts: 1,411
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Instead of trying to make a link style swingarm, try making it one piece where the pivot is say 1 to 2 inches wide and uses two rod ends. That would give you plenty of strength as far as side to side movement is concerned. There are a few rock racers besides Walker Evans' that use the same style suspnesion on Pirate if you can find them. I tried to make this idea work a while back but I lost interest, I hope you can make it work as you are off to a good start |
08-26-2009, 05:38 PM | #17 |
RCC Addict Join Date: Jun 2009 Location: QLD, Australia
Posts: 1,512
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The finished links will be completely one piece. No rod ends at all. Just bearings. It is surprising how much slops even brand new rod ends have:?. Portals would make it almighty hard to use cvds and not sure of the strength of those things. Kieren |
08-26-2009, 06:09 PM | #18 |
Rock Crawler Join Date: Dec 2007 Location: GILBERT
Posts: 751
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what if you used a small diff on each end(4 total) then have d-shafts going to the chassis to 4 little motors? or just a small outrunner at each wheel? |
08-26-2009, 07:25 PM | #19 | |
RCC Addict Join Date: Jun 2009 Location: QLD, Australia
Posts: 1,512
| Quote:
Kieren | |
08-26-2009, 07:57 PM | #20 |
RCC Addict Join Date: Jan 2008 Location: Lake Michigan
Posts: 1,898
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[QUOTE}The mini shafts are an awesome idea I was going to use buggy parts as they are easy to get and are quite cheap. The MIPs would cost $70:? I can get a full set of buggy cvds for cheaper than that. 5.5inch wheels would put a bit of load on those little critters. Even if you had one for each wheel. Kieren[/QUOTE] Are the buggy CVDs open balls joints on the inner at the dif? Or can they be retained at the dif? I was showing the MIPs because the set screw or set pin at both ends and are totally retained. I am gather parts to build my own 3/4 size Poulsons. Redcat Nitro Difs I have laying around. Jconcepts BJ4 CVDs I got super cheap. Delrin + Delrin + vertical mill + maybe TLT knuckles on the front. Watching this one |
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