Drag Racing Discussions > Front Engine Dragsters
Jr Fuel tire diameter
ricardo1967:
--- Quote from: JrFuel Hayden on March 28, 2017, 11:55:16 AM ---Without using a wheelie bar you have a good chance of sending me your front wheels to fix.
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--- Quote from: Scottmech on March 28, 2017, 04:34:16 PM ---Wheelie bar....disagree. Is there a chance of it doing a wheel stand??
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Sorry for being repetitive with this video, but I really wished I knew better (that was three months before the start of this forum). Like you, I dig the look and stance of old diggers, but I wished I had the wheelie bar installed during that shakedown pass, at least as a 'safety net' (the fire bottle ended up doing that job, kinda).
Scott, you have a great looking car. Keep it looking good. But you can rest assured that Jon is the best on the planet to restore your wheels ;) (mine look better than new now)
Scottmech:
Thanks for the vid. I've got a similar one of a friends car doing a wheel stand similar to yours during a test session. Always interested in the factors that lead up to incidents like this and what can be done to prevent them.
In accidents that I did sort of a case study on...seems human factors are the major cause.
In my buddies wheelie, lack of judgement (trying too much too fast in a new car) led to the wheel stand and damage to the car.
In the second one, an experienced driver was unfamiliar with a new car, lack of test runs (from half track runs on alcohol to full sub 7 second pass on a 95% load of nitro in a 115 inch car......in 4 runs)and pushing a car to performance levels it had never been run at led to the car hitting the wall and flipping.
In the third, rushing to build the car and lack of test runs led to the car hitting the wall. They finished the car the night before the race (new car chassis and all), and with no test runs tried to make a full pass. The front of the digger narrowly missed the back of the car (and the driver) in the other lane.
IMO, if proper procedures (with a healthy doser common sense) are used, the chances of an accident are drastically reduced. I work in an jet engine test cell....so maybe it comes from that. In any case, I've tried to follow that same methodology with my car. Didn't rush the build, proper prep before heading to the track, and small steps in testing the performance of the car at the track. So far its worked out well. Car went through the shakedown runs without incident and allowed me to gain confidence the car. Still haven't made a full clean pass (8 runs on the car) but it's getting really close to it...
Best thing is...I'm having a BLAST!!
ricardo1967:
--- Quote from: Scottmech on March 28, 2017, 07:48:06 PM ---Thanks for the vid. I've got a similar one of a friends car doing a wheel stand similar to yours during a test session. Always interested in the factors that lead up to incidents like this and what can be done to prevent them.
In accidents that I did sort of a case study on...seems human factors are the major cause.
In my buddies wheelie, lack of judgement (trying too much too fast in a new car) led to the wheel stand and damage to the car.
In the second one, an experienced driver was unfamiliar with a new car, lack of test runs (from half track runs on alcohol to full sub 7 second pass on a 95% load of nitro in a 115 inch car......in 4 runs)and pushing a car to performance levels it had never been run at led to the car hitting the wall and flipping.
In the third, rushing to build the car and lack of test runs led to the car hitting the wall. They finished the car the night before the race (new car chassis and all), and with no test runs tried to make a full pass. The front of the digger narrowly missed the back of the car (and the driver) in the other lane.
IMO, if proper procedures (with a healthy doser common sense) are used, the chances of an accident are drastically reduced. I work in an jet engine test cell....so maybe it comes from that. In any case, I've tried to follow that same methodology with my car. Didn't rush the build, proper prep before heading to the track, and small steps in testing the performance of the car at the track. So far its worked out well. Car went through the shakedown runs without incident and allowed me to gain confidence the car. Still haven't made a full clean pass (8 runs on the car) but it's getting really close to it...
Best thing is...I'm having a BLAST!!
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I understand your points. In my case I rushed to get the car ready for the last track day of the season, spent almost all night in the garage taking car of last minute details...
Your car seems to have a similar combination to mine... I wished you were closer, it'd be fun to match race! (that is, once I learn to drive)
AWAG:
I had a fed that I had bracket raced for over a year and a half. It was just a simple cheap built 302 Chevy in it. One day I added a carb spacer to it. I made a t&t pass not much changed so the next t&t I raised the rpm 200 at the line and when I took off I drug the push bar on the ground. The next time out it had a bar on it.
dreracecar:
If one is running an index, the only thing that matters is to leave ahead of the other guy and the ability to run right on the number, if you can do that, 60ft times dont mean $%#@. Never go by the 60' time of others unless the front end is set up exactly like yours, a car with 30" of overhang will always 60' better because the overhang shortens the 60' clocks 24"
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