Steering Ackerman

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buzzkill

buzzkill

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Does a stock Baja ( Rovan ) have ackerman built in to it ?? or does an HPI ? If not are there after market arms that are adjustable ? thanks
 
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Here this is worth watching .

Honestly I would say the BAJA (hpi or rovan) have ackerman in the steering. If you turn your wheels all the way right or left the inside tire is angled in more than the outside. As the guy was saying in the video for his buggies the front end is real light so if the ackerman is off he doesn't notice . Ours are rear steer setup per the video but also very light in the front end so we have a lot of Understeer to begin with so the baja's push if you don't let off the gas first before turning in.
 
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1Coopgt said:
Here this is worth watching .
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I understand Ackerman, used on all racing Karts thats why I asked , that is a good video for explanation of the concept !! On the karts it was adjustable with several holes in the steering arms and center hub where the turnbuckles mount , we would adjust it for different tracks and turn radius.
 
1Coopgt said:
Honestly I would say the BAJA (hpi or rovan) have ackerman in the steering. If you turn your wheels all the way right or left the inside tire is angled in more than the outside. As the guy was saying in the video for his buggies the front end is real light so if the ackerman is off he doesn't notice . Ours are rear steer setup per the video but also very light in the front end so we have a lot of Understeer to begin with so the baja's push if you don't let off the gas first before turning in.
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Thats why I was looking into ackerman on these things , the DRIFT RC guys have nice ackerman setups but they are smaller scale , If you had a steering arm that was extended with extra holes in it you could adjust it easily and increase it ! custom part but hey.

Actually Red Cat has a 1/5th scale setup but I don't think it will fit the HPI/Rovan.

We used to TOE IN the rear end on our race cars for road racing to help turn in also , I need to try that ! ??
 
Well after looking at this and going over the Kart stuff extending the ARM add Ackermann so I did a quick design for a part to extend the arm , might try this ???
 

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  • Ackermann adapter 1.webp
    Ackermann adapter 1.webp
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with and without spacers , it can be hard to tell how much increase from these PIX but it is increased , gotta test run itIMG_20201029_145420226.webpIMG_20201029_145413708.webpIMG_20201029_144722219.webpIMG_20201029_144707680.webpIMG_20201029_144702408.webpIMG_20201029_144654990.webp
 
Z.hb71 said:
Change out the rear toe plates (should be included with the rig) to the 1 or 0 ones. I did that and it helped turning a bit.
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I have been meaning to try that as well Z , Im gonna test out these spacers and see how that works first then try the read toe change , I have a habit of always looking at this stuff thru a race car/ Kart setup for tracks , I know for just bashing/screwing around this crap is useless. But I like to mess with it more then rebuilding every month lol !
 
buzzkill said:
I have been meaning to try that as well Z , Im gonna test out these spacers and see how that works first then try the read toe change , I have a habit of always looking at this stuff thru a race car/ Kart setup for tracks , I know for just bashing/screwing around this crap is useless. But I like to mess with it more then rebuilding every month lol !
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Hey man, the Baja needs all it can get steering wise ??
 
Z.hb71 said:
Hey man, the Baja needs all it can get steering wise ??
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well I had to tear down to replace the frame so I changed the rear toe to a 3 ( was a 1 ) see what happens ? maybe Ackermann and 3 deg toe will make it turn normally LOL ? doubt it I bet if you corner weighed these things they would be like 65-70 % rear weight . might need lead !
 
buzzkill said:
well I had to tear down to replace the frame so I changed the rear toe to a 3 ( was a 1 ) see what happens ? maybe Ackermann and 3 deg toe will make it turn normally LOL ? doubt it I bet if you corner weighed these things they would be like 65-70 % rear weight . might need lead !
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I think you will see a reduction in steering. I was at 3 and went to one and saw that it was looser in the ass end, and turned around better. But see what u like.
Another thing that will help is a good a servo and TR servo saver, even just the saver helped mine then around alot better.
 
Z.hb71 said:
I think you will see a reduction in steering. I was at 3 and went to one and saw that it was looser in the ass end, and turned around better. But see what u like.
Another thing that will help is a good a servo and TR servo saver, even just the saver helped mine then around alot better.
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If you like to rear wheel steer ( I happen to in a car ) they are easy to change so I can mess with the setup , I am basing this on hard surfaces not dirt , I have looked at the other types of steering the stock stuff is a crap design.
Seandonato73 said:
Try about 10 oz of lead on the front of the chassis...
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gonna mess with rear tow and ackermann first , then check the corner weights IF I can ?
 
buzzkill said:
If you like to rear wheel steer ( I happen to in a car ) they are easy to change so I can mess with the setup , I am basing this on hard surfaces not dirt , I have looked at the other types of steering the stock stuff is a crap design.

gonna mess with rear tow and ackermann first , then check the corner weights IF I can ?
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I was being funny, but in all seriousness, if your truly worried about better cornering, you need to get some weight up front. I don't think just suspension tuning will get you that kart pin point turn. Too much weight in the rear of the dumb thing if you know what I mean.
 
Seandonato73 said:
I was being funny, but in all seriousness, if your truly worried about better cornering, you need to get some weight up front. I don't think just suspension tuning will get you that kart pin point turn. Too much weight in the rear of the dumb thing if you know what I mean.
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I agree with you , im gonna try to corner weight it just for fun to see
 
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