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Old 07-20-2004, 11:31 AM   #586
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Basically anything fits that is relevant.

You could have a buggy with longer arms, gear diffs, more ground clearance (damper stay + truck dampers) or you could just have an electric shaft driven truck
That also means that many of the option parts fit the SB, namely the alloy hinge pin holders.

Hopefully the steering rack of the RT4 respectively Velox works too wirh some changes to the top deck, steering is really weak at high speeds when the car sits planted on a grass track.

Looked at my steering rack today and figured what I could do about it.
A steering plate instead of the ackermann-rod would help, but no way around the outdrive

Did anyone try to ditch the saverspring and mount the nut backwards against the to steering arm parts so that they're locked together?
I found out that a lot of flex comes from these two parts because they do not align properly under the slightest load and the spring ist much to weak,
I now it's risky but i hope that there's still enough flex to protect the servo gears, I might try it tonight and tell you how it worked.
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Old 07-20-2004, 12:39 PM   #587
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Well... quick testing - it really works!

I just dropped the spring and mounted the nut collar backwards so that the broad side rests against the steering arm, and thightened it.
The steering is much stiffer and accurate now, it can at least transfer around 60-70Ncm in center position (tested against the hold torque of some servos) the right tyre however is a tiny bit more flexible but still stiff enough i think.
And the most important thing; the steering returns to neutral. (which it did not before: steering right on concrete and then neutral, car would slowly move to the right, turned left - neutral, car would move to the left)

The steering geometry will mimic a servo-saver-feel (can't explain very good in English, you'll know what I mean when you try it)
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Old 07-20-2004, 01:06 PM   #588
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Can you post pics of this?

Also, is the spring similar in size to any other springs used by other cars? wondering if an AE heavy duty spring could help.

All in all though, looking forward to some aluminum steering arms.
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Old 07-20-2004, 01:50 PM   #589
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here is the picture:




The spring has an inner/outer diameter of 7/9mm. you can probably fit a 6/9mm spring that should be a lot harder if you find one.

Aluminium arms would be the "cleanest" solution; since the problem originates from the design of the steering rack
We wouldn't discuss about a weak steering if the ball studs of the ackermann link and steering-knuckle/steering arm rods could be mounted in the same direction either up or down.
But the combination of up and down makes a difference of more than 10mm, so the arms will twist under load and that's the real problem!
So we need an (almost) zero-flex material - aluminium
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Old 07-20-2004, 05:54 PM   #590
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Just drill a new hole and mount the steering arm even with the most forward hole on the inner steering arm. The responsiveness is night and day.

BTW, anyone tried 7 cells yet? If so how did you secure them.

Also, talked with Tim today and I ordered a bunch of extra parts as well as the front and rear sway bars, slipper, and the one way which is on back order.

Can't wait to test them out with the novak and seven cells.
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Old 07-21-2004, 04:59 AM   #591
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Thanks for the info guys.


I am looking forward to the aluminum steering arms when they come out. should be a no brainer there.

Anyone weigh there vehicle yet? From what I understand the new BJ4x4 is 53oz ( not sure if thats with electronics or not ).

I may have some more parts news for your guys later today. Still looking into it.
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Old 07-21-2004, 10:14 AM   #592
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can anyone tell me who sells these cars???
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Old 07-21-2004, 11:50 AM   #593
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I'm writing a review of the SB-Sport right now and thought I'd share some pics as they're finished.

First one are all of the mods, I did to the steering (well just two )



I think it has a pretty decent steering right now, I run the inner holes on both the steering arm and the steering knuckles

Right now, I'm using tyres that are only 30mm thick in the front - The outer hole of the steering knuckles doesn't need to be cut with the thinner tyres, so you could theoretically use the outer holes on both the steering arm and knuckle. It should give you a very responsive and accurate steering throughout the holw steering throw then - at least with alloy arms...

However, I can't try this at the moment because I used the stock rims and tyres and therefore had to cut the mounting hole.
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Old 07-21-2004, 12:14 PM   #594
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Josh, where are you located at?

in the US the cheapest mail order place I have found is ultimate hobbies.

there site is www.ultimatehobbies.com and you have to call them to order the vehicle. It goes for about $145 shipped.
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Old 07-21-2004, 05:32 PM   #595
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Default For the SB Sport Owners:

Attached are pics of 2 Very Necessary upgrades that you will need to make if you get your hands on a sport.
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Old 07-21-2004, 05:33 PM   #596
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Another view:
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Old 07-21-2004, 05:34 PM   #597
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another pic
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Old 07-21-2004, 05:35 PM   #598
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pic 4
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Old 07-21-2004, 05:37 PM   #599
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Thumbs up

Last one-

Special thanks to Tim at MRC for making sure my parts arrived as fast as possible and for the very courteous service.

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Old 07-21-2004, 05:51 PM   #600
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so how does the weight compare to the stock units?
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