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Old 2011.09.15, 03:19 AM   #61
color01
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I will attempt to machine the steering adapter for you either today or tomorrow. Unfortunately, I can't do the chassis for you as my mill can't cut carbon fiber -- and early testing showed that the fiberglass-chassis prototypes weren't stiff enough at all. If you'd like, I can draw up the design and ask MantisWorx for a quote, but you'll have to give me a couple dimensions, such as the size of the A-arm and servo cutouts. I also want to suggest not deleting the battery slots: the MRCG generates a lot of traction for its weight mainly due to having a fairly soft, compliant chassis, and stiffening it often reduced traction during my testing.
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Old 2011.09.15, 09:05 AM   #62
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thanks
you are right, too much stiffening will hurt traction. I still remember when I first start 1/10, everyone was chasing super stiff chassis for the suspension to do all the work. Then when I was leaving 1/10, everyone want a chassis that flex. Don't worry about the main chassis plate I was talking about. I will stick with your design.
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Old 2011.09.17, 05:36 AM   #63
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Alright Joey, I've made your steering adapter as well as two extras. I'm moving back to SoCal tomorrow, so PM me your address and I'll send it out early next week.

Btw, how much can you flex the double A-arm front end on your MRCG? I've been asked before to make an adapter plate to meet the two top mounting points on that front end, unfortunately there's not any room to do so unless you turn the servo around and run 98mm wheelbase only. Still, Davey G says that it works well on the car.
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Old 2011.09.17, 11:58 AM   #64
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color01

I pm you my address already.

I cut a spare threaded orange chassis post to 6.6mm in height and fastened the cut post to main chassis plate with machine screw.(one machine screw coming from the top to connect the double a-arm to the cut post, then another screw connect the whole assembly with main chassis plate at the bottom.) There no flex at all. Any flex will come from the main chassis plate first and I don't think the force which the front end is experiencing will be strong enough to flex it. Most the energy will be absorbed by the front spring and then the chassis plate itself. I doubt anyone needed to fasten the top 2 hole. It is extremely rigid.

The only thing concerns me is actually with the double A-arm's design. When the front suepension goes up and down, it tends to rub the tie rod a bit since it is not going in perfect vertical motion. But it is a design flaw of the MR02 double A-arm. PN solve the problem with MR03 double A-arm but it will extreme hard to incorporate the MR03 double a-arm to MRCG 1.1
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