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R/C Tech Forums Thread Wiki: Team Associated RC10 B5m Mid-Motor Thread
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Old 07-26-2016, 12:10 PM   #20521
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Did most this but will try the battery forward. Not something Ive seen others have to do with oher b5m lite's ive driven. Have white springs all the way around. Are there steering block shin adjustments or Ackerman adjustments on these? Thx all!
Ackerman is adjusted by adding or removing spacers under the balls on the steering rack.

The steering stops are just button head screws you can add to limit steering travel...See pic
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Old 07-26-2016, 12:29 PM   #20522
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Thx! I will check for steering stops. Is steering added by adding or removing shims under balls on steering rack


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Ackerman is adjusted by adding or removing spacers under the balls on the steering rack.

The steering stops are just button head screws you can add to limit steering travel...See pic
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Old 07-26-2016, 01:30 PM   #20523
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Thx! I will check for steering stops. Is steering added by adding or removing shims under balls on steering rack
I recommend downloading the manual from Associated, and starting with the Stock setup.

B5M Manual Download
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Old 07-26-2016, 09:55 PM   #20524
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Per manual, "If corner entry is too aggressive, try increasing Ackerman by...taking away shims from the steering rack"...

So, increasing Ackerman this way will decrease steering making turn in more stable? I'm not sure I'm interpreting this properly. I thought increasing Ackerman aided in a tighter turning radius? Sometimes the on power vs off power steering confuses me. I'm looking for a tighter turning radius in 90 and 180 degree turns (not high speed sweepers)
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Old 07-26-2016, 10:40 PM   #20525
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Per manual, "If corner entry is too aggressive, try increasing Ackerman by...taking away shims from the steering rack"...

So, increasing Ackerman this way will decrease steering making turn in more stable? I'm not sure I'm interpreting this properly. I thought increasing Ackerman aided in a tighter turning radius? Sometimes the on power vs off power steering confuses me. I'm looking for a tighter turning radius in 90 and 180 degree turns (not high speed sweepers)
just try it and judge for yourself. I always fell like I have smoother steering with more washers and more aggressive with less. it is an easy change to just try.
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Old 07-26-2016, 10:52 PM   #20526
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Picked up a 1 race day b5m lite for my 8yr old. Turning radius is wide. Tires were right. Checked kick up and its 25 degrees. added roll. Still seems like a wide arc. Anyone know if this is common? I have not built a b5m and would appreciate any tips. Thanks!
My B5m lite steers really well off power in 90 and 180 corners. And it's built according to the manual. I think you are just so used to your xray.
BTW... I used to run white springs all around .. when I changed to green springs at the back. I got more steering and on power rear traction in the corners ...that's with 1.7 pistons (27.5 wt) at the rear and 1.6 (30 wt) in front
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Old 07-27-2016, 01:52 AM   #20527
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Thx all ! Think I am used to my xb2's. But, I've seen some b5m's with wicked steering.'I'll take the shims off and try then experiment with the caster inserts. Phil - hope to see you tmw .
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My B5m lite steers really well off power in 90 and 180 corners. And it's built according to the manual. I think you are just so used to your xray.
BTW... I used to run white springs all around .. when I changed to green springs at the back. I got more steering and on power rear traction in the corners ...that's with 1.7 pistons (27.5 wt) at the rear and 1.6 (30 wt) in front
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Old 07-27-2016, 07:10 AM   #20528
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Sometimes the on power vs off power steering confuses me. I'm looking for a tighter turning radius in 90 and 180 degree turns (not high speed sweepers)
It depends on your driving style, but assuming you're not trying to slide the car around...

Classical line is to decelerate as you approach the corner, and arc towards the apex. Since you are slowing down, weight is transferring to the front and allowing the front wheels to grip and turn (off-power steering).

After you hit the apex, you will start to accelerate out of the corner, weight will transfer to the rear, but you will still be steering (on-power) because you are still going through the corner.

In general, more weight on the front end will improve steering. Off-power, if you need more steering, more weight transfer to the front end will improve steering. On-power, less weight transfer to the rear end will improve steering.

There are other things that affect steering, but this is the basic concept.
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Old 07-27-2016, 11:28 AM   #20529
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Default Rear suspension question.

I run my B5m at a local carpet track. There are a number of jumps and the buggy performs well all around. Except in a section where there are two small whoop style bumps(inch and a half maybe two inch bumps) , if try and speed through there my buggys rear kicks up and over the front end so there I am relying on a Marshall to flip me over. What would help me here? Here is a video the section I am talking about is 11 seconds into the video (that's not me driving) you can see this guy's buggy rear end kicking up, mine is more dramatic. Any help appreciated
https://m.facebook.com/story.phpstory_fbid=1760952740813944&id=1709884492 587436

Keep in mind my buggy jumps like a dream everywhere else on the track. New to racing. Shocks stiffer/softer in the rear? Oil weight thicker/thinner? I am not running with any drag brake.
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Old 07-27-2016, 12:14 PM   #20530
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The rear is packing up under high wheel rates. If you are running the 3x1.4 pistons try switching to the 2x1.7.
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Old 07-27-2016, 01:11 PM   #20531
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I'd say you need to soften the rear oil or change pistons.
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Old 07-27-2016, 02:19 PM   #20532
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The rear is packing up under high wheel rates. If you are running the 3x1.4 pistons try switching to the 2x1.7.
I'll try this. This would slow the dampening speed am I right?

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I'd say you need to soften the rear oil or change pistons.
Wouldn't that make it bottom out quicker causing the rear end to hit the ground and bump it up and over? Or am I thinking about it the wrong way?
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Old 07-27-2016, 03:18 PM   #20533
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Wouldn't that make it bottom out quicker causing the rear end to hit the ground and bump it up and over? Or am I thinking about it the wrong way?
Depends why it is kicking. I couldn't find the video with the link you posted, but typically a bucking car is either caused by the chassis hitting because the suspension is too soft or the shocks packing up because they are too stiff. Without seeing the video, it's hard to tell which side of the equation is giving you the result.
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Old 07-27-2016, 03:30 PM   #20534
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Depends why it is kicking. I couldn't find the video with the link you posted, but typically a bucking car is either caused by the chassis hitting because the suspension is too soft or the shocks packing up because they are too stiff. Without seeing the video, it's hard to tell which side of the equation is giving you the result.
Thanks for the replies. https://www.facebook.com/story.phpstory_fbid=1760952740813944&id=1709884492 587436

Link should work. It was previously setup for mobile.
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Old 07-27-2016, 07:28 PM   #20535
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The video isn't working since it is embedded in Facebook. You need the direct link.

But if the chassis is bottoming out causing it to bounce off the bump, you may need to slow the rear suspension down. Thicker oil.

If it is popping off the bump due to the rear suspension not keeping up, you need to speed it up a bit. Thinner oil or different piston.
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