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Old 10-12-2003, 07:25 PM   #3751
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Well I ran my RaySpeed Chassis on carpet Saturday. Now this is a very nice chassis for Asphalt. But I can't say the same for carpet. I noticed chassis tweak after every run. I just looked at the bottom of the chassis at eye level, and I could see the slight twist in the chassis. Loosened the top deck and retightened. I even ran the Team Suzuki aluminium upper deck mounts. Anyways, just an observation. Maybe I just need to stay off the corner dots...

Ran the RaySpeed today on asphalt. Did pretty good. Lap times were very consistant. I just need to get some high speed steering out of it. I think I'm pushing just a tad too much. That or too much body roll slowing me down.

Anyways, time to do some more tuning.
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Old 10-12-2003, 08:34 PM   #3752
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Wyd Check your AIM...

I ran the Rayspeed Shock Towers and the Steering Rack on the Stock SD Black Chassis. With all the cut outs on the rayspeed Chassis its to weak for Carpet plus Foams..
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Old 10-12-2003, 08:50 PM   #3753
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Hi everyone, I have a question. I run my sd on carpet so I know the stiffest chassis is best. I am not going to buy the rs chassis because I don't think its worth it. I won't buy the tub chassis either. I bought another kit just for spare parts. I run two upper decks and I noticed that it helped a lot. My question is has anyone tried running two lower decks. I think the only downside is weight and everything will be raised 3 mm. So I'm not sure if the extra stiffness is worth the extra weight and raised center of gravity. Just want to know what you all think.
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Old 10-12-2003, 09:01 PM   #3754
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The extra stiffness is needed for carpet, but running two lower decks in my opinion, is a little too much on the weight gain side, but like others who use sandwiched upper decks to get the same stiffness. Two lower decks is a bit extreme, just go get the black chassis. As far as chassis, the Black carbon "feels" a little stiffer than the SSG.
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Old 10-12-2003, 09:05 PM   #3755
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I agree thats its on the extreme side, but I only ask because I have an extra chassis siting on the shelf. I am not going to buy another chassis. I race on Tuesday nights so I'll see what happens then.
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Old 10-12-2003, 09:50 PM   #3756
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Running two lower decks will raise the roll center dramatically.
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Old 10-12-2003, 09:59 PM   #3757
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Thanks Game. I might just save my money and wait for the tub chassis. I got to my AIM too late but I have to remember what your AIM name is.
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Old 10-12-2003, 11:14 PM   #3758
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How does this car do with the stock Chassis on carpet with foam tires ?
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Old 10-13-2003, 12:19 AM   #3759
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The black one should be fine but the SSG might flex alittle too much
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Old 10-13-2003, 02:13 AM   #3760
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Default SD kit motor mount v Rayspeed motor mount

hello fellow SD drivers,
i'm planning to get a SD, but have a question here though. i noticed the kit motor mount has the 3 mounting screws across the chassis, but the Rayspeed mount has only 2 screws inline across while the 3rd(innermost screw) is pependicular to the initial 2 screws and it lies right down the the centre of the chassis. what difference does it make, if any, to the chassis tweak? any feedback will be appreciated. thanks.
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Old 10-13-2003, 08:53 AM   #3761
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Default Re: Re: Unstable SD

Quote:
Originally posted by Lonestar
had the same problem a week ago... after a left turn the car would still be a little off to the left in the next straight, and same with right... Basically, the steering rack ballcups were hitting the lower hinge-pin plastic holders, and creating a hard spot at neutral. If your servo has a little play at neutral (which was the case with mine), it's enough to create the effect described above.
Right on! Same problem, same solution.
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Old 10-13-2003, 10:28 AM   #3762
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Quote:
Originally posted by Matt Howard
The black one should be fine but the SSG might flex alittle too much
Hmm, is this for a fact or just hearsay? I have the black SD and my friend got the SSG, we are no Barry Bakers by any means but we can't find any noticeable difference between the two. The cars are setup identically. We also had the 2 of the fastest guys run our cars without telling them and they didn't notice either. We both run on carpet w/ TRC plaids up front and purple rear. By the way, we are using the center backbones.

I know that this is not a scientific test but unless Masami or Tosolini or a guy with a machine that can measure torsional stiffness can tell us otherwise, then they should be the same. Just my .02
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Old 10-13-2003, 10:39 AM   #3763
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It's a fact that the SSG is very slightly more flexible than regular graphite. The silver inlay on the SSG does nothing for stiffness, it's there to keep the graphite from weakening due to UV light. Where as the regular black graphite is graphite all the way through. I have the SSG, regular black, and now the rayspeed chassis. IMHO the SSG is slightly more flexible than the rayspeed and the regular black is slighly stiffer than the rayspeed. I think the SSG will be fine for racing on carpet though because it still is very stiff if you leave the backbone in it. This summer most people with the SSG cars were taking the backbone out of their cars for asphalt racing because they were so stiff.
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Old 10-13-2003, 11:31 AM   #3764
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Quote:
Originally posted by Matt Howard
It's a fact that the SSG is very slightly more flexible than regular graphite. The silver inlay on the SSG does nothing for stiffness, it's there to keep the graphite from weakening due to UV light. Where as the regular black graphite is graphite all the way through. I have the SSG, regular black, and now the rayspeed chassis. IMHO the SSG is slightly more flexible than the rayspeed and the regular black is slighly stiffer than the rayspeed. I think the SSG will be fine for racing on carpet though because it still is very stiff if you leave the backbone in it. This summer most people with the SSG cars were taking the backbone out of their cars for asphalt racing because they were so stiff.
but the post for the backbone are heavy... u got change them to delrin?
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Old 10-13-2003, 12:09 PM   #3765
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The posts are aluminum, I don't see how they can be all that heavy. I had to add weight to my car when I ran the backbone to be legal, since the backbone is in the middle of the car at the lowest point I don't see the advantage of running delrin posts just to add weight somewhere else
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