Allison Blow-over @Jasper2016

[CUDA]

Actually he did win that race against Shane Stoval, oddly enough I havent seen any pictures of Stoval's boat on the race course

Yeah but Shane said it was cheating because he was in the air not on water ,

With that green windshield I heard he got lost and drove back to Alabama

[RichS]

SO GLAD that Greg is ok!

[flabum1017]

On a positive note it kinda looks like he crossed finish line first???

Not only that, but backwards! Didn't Earnhardt win a race up-side-down and backwards once too?

[Ally101]

nothing like winning a pass up side down

[RBT]

I cut and paste this from my Facebook post about it.





Ok. Folks here it is. From a data standpoint. The anatomy of a crash!


First the details of flight, the boat left the water at 669 feet into the run at a speed of 96.8 mph and 10543 rpm. The boat gained 4 meters in altitude(hair over 13 feet) and traveled 207.75 feet before its final abrupt stop. The speed dropped 21.6 mph in the air and landed at 74.8 mph with a force of 9.79 g. The motor peaked at 12456 rpm
The first kiss on the bow was with a force of 4.98g.
The evidence suggests at 383 feet into the run the 12v trim stuck open and trimmed the motor to the mechanical limit.


Not sure that anyone has ever crashed a drag boat and been able to recover the data. But that is what I can see

[wing nut]

I cut and paste this from my Facebook post about it.





Ok. Folks here it is. From a data standpoint. The anatomy of a crash!


First the details of flight, the boat left the water at 669 feet into the run at a speed of 96.8 mph and 10543 rpm. The boat gained 4 meters in altitude(hair over 13 feet) and traveled 207.75 feet before its final abrupt stop. The speed dropped 21.6 mph in the air and landed at 74.8 mph with a force of 9.79 g. The motor peaked at 12456 rpm
The first kiss on the bow was with a force of 4.98g.
The evidence suggests at 383 feet into the run the 12v trim stuck open and trimmed the motor to the mechanical limit.


Not sure that anyone has ever crashed a drag boat and been able to recover the data. But that is what I can see

That data is fantastic.

[flabum1017]

Got a voice data recorder?

[whipper]

Thats pretty cool you have that data Greg!! I wonder what can be learned buy that so it doesn't happen again like mechanical stops perhaps so the motor wont trim to high? Very cool!

[tb2054]

I was thinking the same ..I hear the same thing happen over and over ,,,mabe a safety strap !!!! easy to do.

[patchesII]

Collaring the trim ram internally to prevent over trimming is the best answer IMO. There's a little work in doing it. Need to know your trim angle running and do some measuring to get the collar right

[olboatman]

Collaring the trim ram internally to prevent over trimming is the best answer IMO. There's a little work in doing it. Need to know your trim angle running and do some measuring to get the collar right

How about an ignition shut off (or limp mode) when the trim passes a set point? Could be easy to fab. Just a thought. Gary

[RBT]

The trim ram was internally limited. Greg could drive the boat with the trim maxed out. It was a combination of events that created this.

[SANTAFE]

I think a mechanical trim limit is the safest. Electrical stuff can fail. JMHO

[JCSmile]

I cut and paste this from my Facebook post about it.





Ok. Folks here it is. From a data standpoint. The anatomy of a crash!


First the details of flight, the boat left the water at 669 feet into the run at a speed of 96.8 mph and 10543 rpm. The boat gained 4 meters in altitude(hair over 13 feet) and traveled 207.75 feet before its final abrupt stop. The speed dropped 21.6 mph in the air and landed at 74.8 mph with a force of 9.79 g. The motor peaked at 12456 rpm
The first kiss on the bow was with a force of 4.98g.
The evidence suggests at 383 feet into the run the 12v trim stuck open and trimmed the motor to the mechanical limit.


Not sure that anyone has ever crashed a drag boat and been able to recover the data. But that is what I can see

Just a curious question, but what is the acceleration (in g's) of a boat like this generally (say earlier in the track or off the line?). Glad he is ok!!

[speedinstream]

A short ram on a ally only barley trims past over trim any way in good conditions not enough to blow u over lot of guys have to shim or use wedges to get more positive trim with a short ram