What is the trick to setting up a no bar car ?
Is it weight ratio front to rear ?
Suggestions please ?
Kit Henry
HMS Speedways and Hobbies
How to set up a no-bar car
Started by
Kit Henry
, Feb 08 2018 03:01 PM
13 replies to this topic
#1
Kit Henry
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Posted 08 February 2018 - 03:01 PM
#2
Dominator
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Posted 08 February 2018 - 06:17 PM
Kit, do you mean a car with no bite bar?
A motor is only as fast as the chassis it's in.
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#3
Samiam
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Posted 08 February 2018 - 06:20 PM
Sam Levitch
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#4
Matt Sheldon
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Posted 08 February 2018 - 06:43 PM
Slip joint or hard tail, Kit?
On a slip joint you want the rear body mount forward of the pivot. Weight ratio is definitely front to back. Typically .300 - .435 tires as .500+ is too much bite.
Matt Sheldon
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#5
macman
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Posted 16 April 2018 - 03:39 AM
Basically, you have to put enough weight in the front to keep the car from jumping out of the slot, or even bouncing.
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Ben Kernan
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#6
Phil Smith
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Posted 16 April 2018 - 09:25 AM
What is a slip joint chassis/car?
Phil Smith
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#7
MSwiss
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Posted 16 April 2018 - 09:41 PM
The below shows one pretty well.
I don't typically think they use a hardware hinge. Lol
http://slotblog.net/...lot-s16d-motor/
I don't typically think they use a hardware hinge. Lol
http://slotblog.net/...lot-s16d-motor/
Mike Swiss
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#8
Foamy
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Posted 20 April 2018 - 11:48 AM
Here is a new ESR Sidewinder chassis under a Vette body. . .
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Dennis Hill
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#9
MSwiss
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Posted 20 April 2018 - 12:02 PM
Thanks for posting, Foam.
In a pass, is there any fore-aft movement, or is there just a bit of flex, limited by the hinge?
In a pass, is there any fore-aft movement, or is there just a bit of flex, limited by the hinge?
Mike Swiss
Inventor of the Low CG guide flag 4/20/18
IRRA® Components Committee Chairman
Five-time USRA National Champion (two G7, one G27, two G7 Senior)
Two-time G7 World Champion (1988, 1990), eight G7 main appearances
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17B West Ogden Ave., Westmont, IL 60559, (708) 203-8003, mikeswiss86@hotmail.com (also my PayPal address)
Note: Send all USPS packages and mail to: 692 Citadel Drive, Westmont, Illinois 60559
#10
macman
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Posted 02 May 2018 - 08:11 PM
just a bit of flex... built this a couple of years ago, works like a charm, Boss 490, 208 grams, GMC extended cab dually body, .705 in 1/8
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#11
Foamy
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Posted 03 May 2018 - 11:37 AM
No fore and aft movement. These things run mainly on a no glue program so it is all about chassis flex. Moving the center body mount front to back
changes the bite the car has.
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Dennis Hill
"Just once I want my life to be like an '80s movie,
preferably one with a really awesome musical number for no apparent reason."
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#12
MSwiss
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Posted 03 May 2018 - 11:55 AM
Big thanks for the reply.
Mike Swiss
Inventor of the Low CG guide flag 4/20/18
IRRA® Components Committee Chairman
Five-time USRA National Champion (two G7, one G27, two G7 Senior)
Two-time G7 World Champion (1988, 1990), eight G7 main appearances
Eight-time G7 King track single lap world record holder
17B West Ogden Ave., Westmont, IL 60559, (708) 203-8003, mikeswiss86@hotmail.com (also my PayPal address)
Note: Send all USPS packages and mail to: 692 Citadel Drive, Westmont, Illinois 60559
#13
Phil Smith
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Posted 03 May 2018 - 11:56 AM
I found this: http://visionsraceca...-comp-dragsters
Our chassis is designed to flex, which helps transfer weight to the rear wheels.There is a slip-joint adjustment on the front of the car to control the amount of chassis flex.
This allows you to tune the car for the optimum setting for each track.
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#14
Phil Smith
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Posted 03 May 2018 - 12:00 PM
This might be taking the flex thing a little too far. 
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