Author Topic: vehicle weight  (Read 10981 times)

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Offline Ron Gibson

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Re: vehicle weight
« Reply #15 on: January 21, 2015, 03:26:50 PM »
Wouldn't that depend on if it is flying or not?

Ron
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Offline Stan Back

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Re: vehicle weight
« Reply #16 on: January 21, 2015, 03:38:06 PM »
Don't know.  I got kinda lost on the Point of Interest, Force of Mass, Direction of Vector thread.
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Offline Elmo Rodge

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Re: vehicle weight
« Reply #17 on: January 21, 2015, 05:24:21 PM »
About 2 pounds, Stan.  :dhorse: Wayno

Offline Captthundarr

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Re: vehicle weight
« Reply #18 on: January 21, 2015, 09:54:52 PM »
As we get Amys' car faster weight placement has become the new learning curve. 2013 her then new best speed of 144. she commented on the rear of the car feeling light so we add 145# of lead the rear bumper frame ('91 camaro) 2014 new top speed 159.348 she was happy with the added weight to the rear and the car was on "rails", her words. totalt car weight 2665# wet. this year looking for about 185.0mph then we'll see. don't want to get it much heavier. my 2cents.all I got.
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C/GALT 137.65 Ohio Mile check that 144.12 2013, AA/GALT 159.34 Ohio Mile 2014. B/GALT 180.577 RECORD 6/15

Offline entropy

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Re: vehicle weight
« Reply #19 on: January 22, 2015, 02:03:52 AM »
Us disagree! Are you saying less weight is better or vice versa?
hey Fred, i was talking about tire spin on asphalt.
on weight: IMO less is always better if it is in the right place
karl

Offline roadracer

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Re: vehicle weight
« Reply #20 on: January 22, 2015, 12:12:41 PM »
When I ran 184 on the mile and 190 on the 1.5 mile I weighed 168 lbs.  I gained some weight and couldn't get over 183 on the mile and 186 on th 1.5 mile.  I lost wight again for last season down to 170 lbs.  186 on the mile.  Didn't get to run the 1.5 mile. 
I also would spin my 998 on almost every run.  A controlled wheel slip from a hard launch. The bike would bracket race 205-206 0n the mile and 210-211 on the 1.5 mile if you rode it that way.
For my bikes a hard launch and less weight is huge.
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Offline fredvance

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Re: vehicle weight
« Reply #21 on: January 22, 2015, 05:24:54 PM »
Hey Karl, ok we agree on the weight. :cheers: I never spun the little motors, and haven't run the big motor on pavement. Brenda,, seemingly leaves slow. By about 20ft she is at full throttle. Works pretty good. She is doing some drag racing so we are looking for better starts. Having a 115lb rider really helps.
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Offline greenjunk

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Re: vehicle weight
« Reply #22 on: January 22, 2015, 05:59:00 PM »
frank, 2600lb? my god thats light.  i thought i needed to add weight at 3200# with our car.  keiths weighs over 4000#
David
213mph Time Bomb Camaro

Offline Captthundarr

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Re: vehicle weight
« Reply #23 on: January 22, 2015, 06:07:51 PM »
The thing is gutted and the only weight added was to the rear last year. When I started building for the mile I kept the "extended drag race" concept in mind. Don't need heavy for traction mostly balance. We have enough aero force on the front but as speeds increase we noticed some lift in the rear so we are sneaking up on it. I've seen folks haze the tires at the big end in wilmington in 3500+ pound car. Some of that was HP but some was due to some lift at speed.
Live,Laugh, Love /  Jack Scratch Racing /ECTA   
Amy Hartman-Driver, Frank Hartman-everthing else.
C/GALT 137.65 Ohio Mile check that 144.12 2013, AA/GALT 159.34 Ohio Mile 2014. B/GALT 180.577 RECORD 6/15

Offline greenjunk

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Re: vehicle weight
« Reply #24 on: January 22, 2015, 06:42:38 PM »
its almost all due to lift
David
213mph Time Bomb Camaro