11-09-2009, 06:38 PM | #1 |
Quarry Creeper Join Date: Jul 2006 Location: pnw
Posts: 310
| how to cure axle steer
ok this is starting to piss me off what causes axle steer upper links length or trianglation? help |
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11-09-2009, 06:40 PM | #2 |
Quarry Creeper Join Date: Feb 2008 Location: Citrus Heights
Posts: 207
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both |
11-10-2009, 12:37 AM | #3 |
Pebble Pounder Join Date: Oct 2009 Location: lakeside
Posts: 110
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is this a shafty problem only?? what is it
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11-10-2009, 06:16 AM | #4 |
I wanna be Dave Join Date: Jan 2006 Location: ...the burning end of the rope.
Posts: 5,013
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no we have the same problem in our moa's,,its caused by the the change in angle as the axle swings through its articulation range,,oneset of links following the other,,the distance between the axle and the chassis changes as it moves
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11-10-2009, 11:02 AM | #5 |
Quarry Creeper Join Date: Oct 2007 Location: Toronto, ON. Canada
Posts: 281
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i solved my issue with having both upper and lower links same length and triangulating both uppers and lowers... what worked for me may not work for you... the best way is just to try things untill it works the way you want it. |
11-10-2009, 08:22 PM | #6 |
Rock Crawler Join Date: Sep 2009 Location: Abbotsford BC
Posts: 563
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i put some 70mm upper links on mine and it pretty much cured it. the actual term for this would be bump steer |
11-10-2009, 08:31 PM | #7 |
Pebble Pounder Join Date: Sep 2007 Location: lumby
Posts: 99
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no bump steer is when you have a chassis monted steery and you run a drag link the problem he is have is also known as axle swing i think
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11-10-2009, 08:51 PM | #8 |
Pebble Pounder Join Date: Oct 2005 Location: Rocklin / Ukiah, CA
Posts: 149
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After seeing this thread, I tried searching axle steer and axle swing. I found nothing. I'm not sure I know what you guys are talking about. Could you explain what this is? Thanks. |
11-10-2009, 10:03 PM | #9 |
Pebble Pounder Join Date: Oct 2009 Location: lakeside
Posts: 110
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i think it's when you climbing crossing a rock section where the axles shiff kind of putting you off your line???????????????? i think
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11-10-2009, 10:20 PM | #10 |
Suck it up! Join Date: Mar 2008 Location: Arkansas
Posts: 11,652
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Sit your truck flat, grab the chassis, and roll it over to one side. Watch the tires on the side you are rolling the chassis to. If they move closer together, you have axle steer. Equal lenth links and better triangulation will fix this. Axle swing is a shortening of the wheelbase when the suspension is extended. The axles are pivoting under the chassis as its raised. The only thing that cures this is limiting thier movement. |
11-11-2009, 12:30 PM | #11 | |
Rock Crawler Join Date: Jan 2006 Location: SUPERMOTO heaven
Posts: 695
| Quote:
Axle steer is when the link geometry forces the axle to move in an arc when compressed. What this means is that when you flex the suspension the rig actually "crabwalks" a little It's not necessarily a bad thing, some drivers actually like it b/c it forces the rear tire into the obstacle instead of staying straight. Personally, I don't like it. It seems to move different and I'm used to very little axle steer. Some causes of axle steer are dual triangulation, improper link length ratios, and just general bad link geometry. Designs that have very little axle steer are usually parallel upper link/triangulated lowers (i.e. GC series, OCD, Losi comp crawler, etc.) Three link designs also have very little axle steer when used with parallel links (i.e. stock Losi MRC) | |
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