Thread: Frames
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1/9/09, 7:33 PM   #6
Re: Frames
Larryoracing
Larryoracing is offline
Senior Member

Join Date: Nov 2007
Posts: 380
 

Dear Al,

I enjoyed your post and I was trying to think of what support bar to the "B"
pillar you were talking about. I spend a lot of time just looking at frames trying
to get into the mind of the chassis builders. Trying to figure out what the chassis
builder is trying to do/accomplish. What is this guy trying to engineer into the chassis? I haven't had much luck...lol! But I keep looking. It's like doing a math
problem in Jr High School...if you think about the problem long enough the answer
will come to you miraculously.....lol! It's not luck at all, it's just a matter of how long you are willing to search for the answer. If you put in the time the answer will come, guaranteed. If you are willling to wait long enough all your dreams will come
true. So it all comes down to what my boss told me many years ago.

"Larry...Health is the most important thing a man can have" "Take care of yourself 'and when the time comes you will be able to accomplish/do what you
want in life'".

Back to the point. Looking at the Maxim Chassis dwgs on their web page,
I figure on a Wing car they lay the "B" pillars back so that the "Wing" hangs
further back on the chassis to give the car more rear down force.

If you look at thier schematics/dwgs on their web page their are a lot of
support bars to the front of the chassis. They want to make sure all the loads
transferred from the front of the car are transmitted to the back of the car.

2) The key is they don't want the car too stiff, so in the center of their cars
most of the diagonal and longitudinal tubes are missing. There are just the two
down tubes transmitting all the twisting forces generated from the front of the car to the rear.

3) If you look at a "Spike" midget chassis the "B" pillars are really layed back.
The "B" pillars are really high/tall in the chassis to promote side forces to the
the outside RR tire, during cornering. And the car is narrow to promote
maximum side forces during roll through the corners....ie... torque is
equal to "Force" X "lever arm". Get the "B" pillars high and get the car
narrow to transmitt maxim side forces through the corners. Kind of like a
bigger lever arm to move a heavy rock or object. The car is high and and
the distance is long from the side of the chassis to the RR tire (Narrow
Chassis) to promotote maximum downforce to the RR of the car,
during cornering. And the "B" pillars are layed back to give more Rear Wt
distribution. It's a complete system and has been engineered that way
From John Godfrey's (?) many years of laying in bed at nights dreaming
this stuff up...lol! Wonder what John is dreaming up next. He's not dead
yet...lol, if you know what I mean?????


Anyhow those are my ideas and I'm sticking to it...lol! That is what bench
racing is all about and best of "Health" to you.

Sincerely,

Larry Otani:applaud: