Technical > Spud Miller's Cave
Motor dies
GlennLever:
--- Quote from: dreracecar on May 16, 2017, 12:56:19 PM ---Gimmicks, lots of cars dont use that--whats so different??
--- End quote ---
I believe what causes my problem with the engine quitting is the shape of the tank.
Being long and narrow causes the fuel to run away from the pickup with negative G's.
Not a gimmick if it solves the problem.
dreracecar:
Built correctly and there wouldnt be a problem.
Had an oppertunity to play with "fluid motion" graphics program, played with size, shape, volume, and forces, It can be made to work
JrFuel Hayden:
Glenn, I think you are right about the fuel tank shape. When Dave Tuttle build our car in 1997, he asked about what Bud wanted for a tank, and we were going to race the car and not build a show car, Bud wanted a tank that would not die after a burn-out or after the finish line, he built a kinda tall tank, it's a 4 gal tank that is 10" tall, & 16" long, with a baffle/shelf about 3" from the bottom, and about 1" open on each end of the tank with one hole under the fuel cap so the tech guys can do the fuel check [ must be pure alky], no hinged baffle. We have never had a problem with fuel supply.
BTW, if you'll notice the big show cars have tall tanks. Now when I had my nitro JrFuel car in the 60's, we made a cute little tank no higher than the top frame rail, and widge shape, BUT that was during the time of no burn-outs, just push start from the big end, change lanes behind the start line, and go with a flagman and smoke the tires about half track, no VHT.
Glenn I know you may not like our tank design, because of your full body, but a 10" tall tank has worked perfect for us.
I hope this helps.
Jon
GlennLever:
I have no choice if I want to run the full body, which I do.
With the new tank having a baffle and trap door the engine no longer dies after the burn out.
The primer pump solved the problem up on the big end. I can now make the turn of the track under power.
Glenn
dreracecar:
Burnouts without a problem
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