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03-22-2010, 02:18 PM
| #1 |
| Pebble Pounder Join Date: Feb 2008 Location: Maple Ridge, BC
Posts: 113
|  Why don't I see any independent suspension crawlers?
How come I never see anyone making crawlers that use independent front and rear suspension? What is the logical reason behind it? Is it mainly weight transfer?
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03-22-2010, 02:22 PM
| #2 |
| I wanna be Dave Join Date: Oct 2008 Location: I miss Rowdy
Posts: 2,238
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weight transfer. More moving parts= more problems and more tuning. The traxxas summit is an IFS crawler.... well sort of.... nah.... nevermind. IFS crawlers in the 1:1 world work pretty well. They are very stable. anyone have a link to Chainsaw 4X4???  |
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03-22-2010, 03:24 PM
| #3 |
| Newbie Join Date: Jul 2007 Location: Salt Lake City
Posts: 31
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03-22-2010, 03:59 PM
| #4 |
| RCC Addict Join Date: Feb 2008 Location: tauranga north island new zealand
Posts: 1,786
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I been thinking about building an inderpendent suspension crawler as well,maybe with a 2 speed box. Like a summit but works tho.
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03-22-2010, 04:40 PM
| #5 | |
| Rock Crawler Join Date: Aug 2007 Location: Atlanta
Posts: 615
| Quote:
whole lee CHIT! I'm gunna go post a link to that in chitchat!! I'm sure no one has ever seen it  | |
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03-22-2010, 05:30 PM
| #6 |
| Quarry Creeper Join Date: Jan 2009 Location: Bay City
Posts: 365
| insane
That is insane. I would love to see how he built that. Their's got to be some brilliant persont that can make an rc version of that.
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03-22-2010, 05:34 PM
| #7 |
| Rock Crawler Join Date: Dec 2009 Location: Lynnwood
Posts: 569
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IFS in 1.1 is good stock but you say everyone with a yota and a know how SAS it
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03-22-2010, 06:58 PM
| #8 |
| Quarry Creeper Join Date: Apr 2009 Location: Indianapolis Indiana
Posts: 346
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Independent suspension isnt good for crawlers.. number 1: one wheel goes up on the right side, the left wheel stays the same. on a solid axle crawler the left would go down. Number 2: its alot harder to make them durable, axles can pop out alot easier |
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03-23-2010, 10:08 AM
| #9 | |
| Quarry Creeper Join Date: Oct 2007 Location: Ft. Wright, KY
Posts: 435
| Quote:
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03-23-2010, 10:26 AM
| #10 |
| Rock Crawler Join Date: Feb 2006 Location: Where the foams are always wet
Posts: 878
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03-23-2010, 10:29 AM
| #11 |
| Quarry Creeper Join Date: Sep 2008 Location: Kuala Lumpur, Malaysia
Posts: 372
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There's no reason it can't be done. But seeing that there are still durability issues with relatively simple solid axles (CVD's etc.) I can't see a more complex IFS being an improvement. IFS is better for faster rigs, less unsprung weight banging around under there, but at comp speeds we won't benefit from that either. And how would you mount your battery and servo on that? Not! So with those mounted higher up in the chassis you'll probably end up with a higher C of G also. And you'll need a longer, heavier chassis to mount it. Also, due to the short half shafts, you won't get any where near as much articulation as a solid axle, and at max flex you'll have limited steering because of the combination of flex and steer angles at the CVD's. Might be cool for scale/trail but for a comp rig there's plenty reasons not to do it, I think. Cheers. |
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03-23-2010, 05:50 PM
| #12 | |
| Pebble Pounder Join Date: Jul 2009 Location: Fort scott
Posts: 174
| Quote:
The guy runs and repairs heavy equipment and has a vast knowlage on hydrolics. If I remember correctly it runs a Ford 5.0 and a single 9". that turn chain drives for the hubs. The front also extends about 12". And for the record it realy isnt a true independet suspention.  | |
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03-23-2010, 11:18 PM
| #13 |
| I'm a stupid C U N T! Join Date: Jun 2005 Location: In the Garage!
Posts: 4,307
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there are several good threads on IFS over Solid axle, I don't feel like searching for it but there is a nice graphic that illustrates how each axle type works and why SA is superior in crawling situations.
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03-24-2010, 09:35 AM
| #14 |
| Quarry Creeper Join Date: Jan 2010 Location: Albuquerque
Posts: 318
| ifs
One of the objects to crawln is to keep as many tires on the ground as you can...IFS isn't designed for that (unless you're at high speeds, ie deseret racing)
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03-24-2010, 09:47 AM
| #15 | |
| TEAM MODERATOR   Join Date: May 2004 Location: Tennessee
Posts: 10,855
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03-24-2010, 11:19 AM
| #16 | |
| RCC Addict Join Date: Feb 2008 Location: tauranga north island new zealand
Posts: 1,786
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Too true,see if you know what you are doing,anything can be done,and made to work. Quote:
Last edited by vipxj; 03-26-2010 at 04:29 AM. | |
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03-25-2010, 01:41 PM
| #17 |
| Newbie Join Date: May 2009 Location: Pocatello
Posts: 3
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In the 1:1 world, IFS has been tried on a comp level but it got ripped out halfway through the season and axles swapped back in. Higher center of gravity and the weight transfer is not ideal. Going fast now, is a totally different story.... |
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03-25-2010, 01:57 PM
| #18 |
| Rock Stacker Join Date: Oct 2005 Location: Newark
Posts: 62
| super raptor build |
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03-25-2010, 05:08 PM
| #19 | |
| I wanna be Dave Join Date: Oct 2008 Location: Golden
Posts: 2,588
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