Motor dies

[dreracecar]

My guess is the first time the the boating industry started using alu to make boats out of.
 You have the equipt and I have the equipt, the average guy/girl that wants to try and do it themselves prob do not have access to. So to keep fustration down  and to be able to use simple forming tools to work the 5052, giving up .017" in thickness to learn proper construction methods and increase welding skills, I feel holds a little more weight to the discussion. Most of the tanks discussed here will be small in volume vs a big show top fuel or funny car that using the thicker material is a general must use, and those will be made by the likes of you and me, and not the home builder. The last home built tank I saw run in a funny, blew up and burned the car down, used .080 but did not roll the edges and split across seams

[nostalgic371]

Thanks for the info, drerace !

[hotrod316]

Well that did not go well! went testing last week
almost lost our new fed.
car made a very hard right turn! even the tower said that was a great save.

original fix
baffels in the tank?


we put 4 baffels in the tank.
1st problem,
it blow fuel out the rear vent, right onto the right rear tire, never done that before! thanks to (go pro)

fix?
going to tie front and back vents together and put them into a vented punk tank not going to do that again you say heart attack!

SECOND PROBLEM IS STILL THE PROBLEM TRYING TO FIX. SECOND PASS THE MOTOR DIED AGAIN AFTER THE BURN OUT, BAFFLES DID NOT FIX THE PROBLEM.
 
FIX
WE PUT THEM IN THE WRONG PLACE.
IT'S NOT THE TANK

QUESTION SPUD
IF YOU REMEMBER WE ARE RUNNING THE MAIN BY PASS OFF THE PUMP ( PIC IS ON HERE UNDER PUMP I THINK, REMOVED ALL THE INTERS)
COULD THIS BE THE PROBLEM, CAVITATING  IN THE PUMP
FUEL TANK TO FAR FROM PUMP.
FUEL LINE,  IS 1" ALUM TO  10" OF # 12 HOSE TO PUMP

GOING TO CHANGE THE MAIN BY PASS TO RIGHT BEFORE THE BARROW VALVE TEE OFF.
PLUG THE PUMP

IT SOMETHING STUPID I KNOWN!
AS ALWAYS THANKS FOR YOU TIME
STEVE M 

[GlennLever]

Liquid under the tire at launch is no fun.

I almost collect the wall at gateway last year when we were held at the line for a track problem and the engine got hot and water from the expansion tank escaped right in front of the right rear tire. No one noticed the water.

People tell me they do not know how I did not touch the wall, myself I do not remember coming that close, it was just reaction instinct that saved me.

This problem has been addressed and will never happen again.

Sorry the baffles did not solve you problem. The description exactly fit the problems I had at Epping before we install baffles

[hotrod316]

THANKS GLENN WE ARE GOING TO MOVE THE MAIN OF THE PUMP  AND TRY AGAIN
WE HAVE ONE MORE TEST BEFORE  THE NEXT NDRL RACE
STEVE M

[GlennLever]

Are you going to Norwalk?

[hotrod316]

that was the plan! but if we can not find the gremlin no!

[32bantam]

What are the butterflies set to?   If they are too tight...when you snap the throttle closed they might be cutting off air for just long enough to stall. open them up a few thou and try it....you will have to readjust the barrel valve.

[hotrod316]

thanks  Steve  will try that.
went testing Saturday,  stayed off the brakes longer, motor did not die after the burn out, but still die at the big in
and yes it a PIG!!  5.30, 5.30 5.31 5.30  131 or 132 mph  IN THE 1/8, now I have a driver! Richard Lawson, now can we just get to a race?

[dreracecar]

What are the butterflies set to?   If they are too tight...when you snap the throttle closed they might be cutting off air for just long enough to stall. open them up a few thou and try it....you will have to readjust the barrel valve.

 Just screw the stop a little bit , no need to mess with the BV,  Its alcohol! as long as it comes off of idle clean and sharp the BV is fine.
 Fuel volume reacts to "G" force.  1g will move the fuel to fill the void at a 45* angle at the tail. If you are not carrying enough volume the fuel will move away from the pickup, and is quite common with the chute hit.
  Racing is too expensive to have problems, really need to have somebody build you a tank that works correctly