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Old 03-27-2008, 11:23 AM   #16
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in R/C, 80% is driver skill, with 20% car. Full scale is a different picture.


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Having done both, I would argue the proportion contributing to success is the same regardless of scale. In fact, I would argue 90/10 for both scales.

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Old 03-27-2008, 12:30 PM   #17
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To many variables in the flex!
Temp,direct sun,Braces,material chassie made from,atmos-pressure!
If we all can figure out the flex as unpredictable as it is,should be able to figure out the problem with the set up quicker!
I dunnno I'm npt that good yet !
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Old 03-27-2008, 12:52 PM   #18
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I'm npt that good yet !
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Whatever I see just how good you are every sunday!
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Old 03-27-2008, 05:28 PM   #19
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[QUOTE=British Menace Darren (Muppet Racing) did alot of work on chassis flex with the G4. As Motorman also did I think.

One of the things Darren found was, given that the modular construction of the G4 made the chassis very stiff, he enlarged the holes in the rear of the top plate and did not tighten the screws down at that point! Sometimes omitting the screws altogether! This basically meant the rear and front of the car was only connected via the chassis plate. This gave the rear end alot of freedom to roll, flexing in relation to the front of the car/chassis. This fitted nicely with the high COG of gas cars at the rear compared to the much lower COG at the front.
Darren record with the car speaks for itself.

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Do you mean the two rear upper deck screws?
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Old 03-27-2008, 05:42 PM   #20
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Originally Posted by 92mnstanger View Post
Having done both, I would argue the proportion contributing to success is the same regardless of scale. In fact, I would argue 90/10 for both scales.

Steve
Thats interesting you think that.
You the only person I've ever known that thought that to be honest with you. Even Alain Menu, Mr. Herbert and a guy called Michael Schumacher admit the car has the magority and is the magor factor in the overaul contribution to the race lap.......... still.

From a purely engineering standpoint............flex is out. From a drivers stand point, flex helps in driving the car's. Making them easier to drive and thus faster. But as skill rises, the chassis stiffness gets higher! Thats fact in full size car racing cause I had to take the data on exactly that myself!

In r/c.....I just think it will head slowly in that direction. And you will see less and less flex in chassis as time goes by.

But that is just my opinion.

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Old 03-27-2008, 05:47 PM   #21
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Having read you post again Streve....and again. I may have got tyhe wrong impression of what you were trying to say....lol. I hope you don't take offence.
Sorry that I took it wrong if that is the case.

The reason why I think there is alot more emphasis on driver ability in R/C is, as was pointed out earlier, the lack of direct imput to the driver that you can get from full scale.

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Old 03-27-2008, 05:51 PM   #22
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I think the main thing with flex in an R/C car is to start with the stiffest chassis you can get.
Get the car set up the best you can with the flex, or lack there of, you have then use "flex adjustment" if you have any (!!) aas a last fine tune tool.

Just my input into this.

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Old 03-28-2008, 06:37 AM   #23
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Whatever I see just how good you are every sunday!
Dude at these big races believe me i'm nothing near the top!
But that is why i go is to get better and better!
Each time i go it feels like i am faster when i get back home next to my locals.
Also it does me good to get away from time to time and RELAX!
later
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Old 03-28-2008, 07:27 AM   #24
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Do you mean the two rear upper deck screws?
Yes, the two screws that also, originally, hold the handle too.

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Old 03-28-2008, 08:49 AM   #25
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Dude at these big races believe me i'm nothing near the top!
But that is why i go is to get better and better!
Each time i go it feels like i am faster when i get back home next to my locals.
Also it does me good to get away from time to time and RELAX!
later
Jeff
I'd be happy if i can be half as good as you are LOL
Looks like this weekend is going to get rained out, so i'll be heading up there today for a little practice time (friday)!
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Old 03-28-2008, 09:21 AM   #26
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Ah the old flex or not to flex question?
Well I see flex as potentialy expensive, let's say for instance your cruising down the straight at any major track suddenly for some strange reason you get a glitch or someone punts you off the track and you cartwheel in to the barriers. I would think that chassis would be easier tweaked if it flexed than if it didn't.
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Old 03-28-2008, 10:35 PM   #27
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www.bofeathers.com/photos.htm

chassis flex
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Old 03-28-2008, 10:51 PM   #28
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LOL
Funny, but i don't think that's chassis flex.....
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Old 03-28-2008, 11:04 PM   #29
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it does to an extent, alot of things working there though. Same concept, but more prevelant
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Old 03-28-2008, 11:06 PM   #30
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Ah the old flex or not to flex question?
Well I see flex as potentialy expensive, let's say for instance your cruising down the straight at any major track suddenly for some strange reason you get a glitch or someone punts you off the track and you cartwheel in to the barriers. I would think that chassis would be easier tweaked if it flexed than if it didn't.
what if you had a really stiff chassis? Ever seen a drill bit break? If its really still, the force is transfered thought the whole car, if it flexes, it takes energy away.
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