ebonyandivory wrote: I'm pretty sure at about 170mph I'd be wondering "is this a bad idea?".
Yeah, but as soon as you finish saying that to yourself you'll be going 300.
ebonyandivory wrote: I'm pretty sure at about 170mph I'd be wondering "is this a bad idea?".
Yeah, but as soon as you finish saying that to yourself you'll be going 300.
What do you suppose the final drive ratio is? Cuz I kinda doan't think those cars, fast as they are, are geared for 300....
In reply to Jay_W:
Like... 1.23
In reply to Jay_W:
Did you hear the epic clutch slip off the line? You know they have a not stock ring and pinion.
Showed this to my wife last night and asked if we win the Lotto can I do this? Her response was 'sure, build what you like, but get a pro to drive it' I told her 'Berkley that, I want to drive it and I wouldn't want me or anyone else to drive something I built at 300mph'
As an aside, at the opposite end of the scale did anyone see this Mini at Bonneville? I now want to get a Hillman Imp to 150mph at Bonneville
In reply to Adrian_Thompson:
Ironic that a BMW head fits onto a vintage Mini motor.
In reply to alfadriver:
Keeping it in the (modern) family 
That's pretty impressive with only a few extra (visible) aero bits and on a 9000 foot runway. Fingers crossed for 300 next year.
The0retical wrote: That's pretty impressive with only a few extra (visible) aero bits
They claim it's All stock aero, at least when they ran 280mph
CobraSpdRH wrote: Don't they have to go both directions or something for it to be a "record" at the Texas Mile? I seem to remember something they did to mitigate doing a run with the wind at your back...
Not sure about Texas Mile, but I know that at Bonneville you have to make a backup run within so many percent (faster or slower) to get the record.
In reply to NickD:
Texas mile is standing start 1 mile course. Only run one direction. Speed is measured at finish line only.
Other than 4x the length, the primary difference between the standing mile vs. 1/4-mile is top speed vs. ET, correct? Even so, it seems like a re-geared top fuel car(with the rest of it re-engineered to match) would be the hot ticket to the highest top speed in the standing mile, no?
SOooo Fast, I think I would like to drive it, I have Been Half that and was comfortable,but 300 maybe NOT. I would like to build a Bonneville Streamliner but the Speed Demon has put those Numbers about a Million bucks away, yea Baby!!!
In reply to petegossett:
I'm not sure that Top Fuel engines can run at WOT for that long, don't they rebuild them in between passes?
petegossett wrote: Other than 4x the length, the primary difference between the standing mile vs. 1/4-mile is top speed vs. ET, correct? Even so, it seems like a re-geared top fuel car(with the rest of it re-engineered to match) would be the hot ticket to the highest top speed in the standing mile, no?
Top Fuel engines are coming apart by the 1/8mi mark. I doubt anything useful would last a whole mile.
petegossett wrote: Other than 4x the length, the primary difference between the standing mile vs. 1/4-mile is top speed vs. ET, correct? Even so, it seems like a re-geared top fuel car(with the rest of it re-engineered to match) would be the hot ticket to the highest top speed in the standing mile, no?
Not so fast young grasshopper. Top Fuel cars only run a thousand feet not a quarter mile. At least not since 2009? They burn through about 35 gallons of nitromethane per pass....at $100 per gallon. They produced something like 10000 plus horsepower. It takes almost a thousand horsepower just to turn the blower. An interesting fact I learned is that by the end of each pass the electrodes on the spark plugs are melted off. They essentially are dieseling in the last half of the dragstrip pass. They basically get 2 runs out of the blower belt.
Insane.
Ovid_and_Flem wrote:petegossett wrote: Other than 4x the length, the primary difference between the standing mile vs. 1/4-mile is top speed vs. ET, correct? Even so, it seems like a re-geared top fuel car(with the rest of it re-engineered to match) would be the hot ticket to the highest top speed in the standing mile, no?Not so fast young grasshopper. Top Fuel cars only run a thousand feet not a quarter mile. At least not since 2009? They burn through about 35 gallons of nitromethane per pass....at $100 per gallon. They produced something like 10000 plus horsepower. It takes almost a thousand horsepower just to turn the blower. An interesting fact I learned is that by the end of each pass the electrodes on the spark plugs are melted off. They essentially are dieseling in the last half of the dragstrip pass. They basically get 2 runs out of the blower belt. Insane.
they can also only run the same set of connecting rods for a few runs because they literally compress with every run and over time will drop compression enough that they change it out for a new one.
for reference:
In college, in one of my engineering classes, we calculated the operating life cycle of a top fuel engine.
It was something like 1000 revolutions (cycles) total.
Those are damn sexy cars too. That was a fun ride.
Schrödinger's Flight Service wrote: In college, in one of my engineering classes, we calculated the operating life cycle of a top fuel engine. It was something like 1000 revolutions (cycles) total.
I've heard something like 900 revolution cycles is a life of a Top Fuel motor. Considering they turn close to 10000 RPM on full load and a pass is 4 seconds the math makes sense when you include the burnout.
Back to the Ford GT...the rearward-facing shot when he dumped the parachute it look like the motor let go. Or maybe it was just a vapor trail period LOL
Ovid_and_Flem wrote:Schrödinger's Flight Service wrote: In college, in one of my engineering classes, we calculated the operating life cycle of a top fuel engine. It was something like 1000 revolutions (cycles) total.I've heard something like 900 revolution cycles is a life of a Top Fuel motor. Considering they turn close to 10000 RPM on full load and a pass is 4 seconds the math makes sense when you include the burnout.
If one were so inclined, reducing boost, switching to a steel rod, along with a few other factors would still be driveable and last for the two miles... but a Pro Mod makes north of 4000 HP, and they have dramatically longer lifespans, so it may be wiser to start there and up the boost rather than starting with top fuel and lowering the boost.
In reply to tuna55:
I am sure there are silly things like rules and classing that prevent that.
Schrödinger's Flight Service wrote: In reply to tuna55: I am sure there are silly things like rules and classing that prevent that.
Isn't the standing mile(s) stuff just run whatever at the pointy end of the rules?
tuna55 wrote:Ovid_and_Flem wrote:If one were so inclined, reducing boost, switching to a steel rod, along with a few other factors would still be driveable and last for the two miles... but a Pro Mod makes north of 4000 HP, and they have dramatically longer lifespans, so it may be wiser to start there and up the boost rather than starting with top fuel and lowering the boost.Schrödinger's Flight Service wrote: In college, in one of my engineering classes, we calculated the operating life cycle of a top fuel engine. It was something like 1000 revolutions (cycles) total.I've heard something like 900 revolution cycles is a life of a Top Fuel motor. Considering they turn close to 10000 RPM on full load and a pass is 4 seconds the math makes sense when you include the burnout.
Exactly - start with whatever fast drag car, then modify it to hold together for the standing mile. The hard launch wouldn't be a concern, so there's some improvement to be made in that regard, and the obvious engine concerns already stated, but they've got the aerodynamics worked out pretty well already.
But this is using the production block, head castings etc. Not a pure drag engine. Yes, it's had a ton of work, but it's the same basic bits and aero as came off the production line in 06. Seriously, think of it!
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