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Where is all the TAF guys running N/A injected power? A couple years ago I was hanging out with Tony Bartone at the World Finals. This particular race he was in his Roger Dean Alcohol Dragster, naturally aspirated running 100% nitro. The guy was putting down the blown guys left and right and took the thing all the way to a win.
http://www.northeastdragracing.com/r...onepomona1.jpg
N.J.B.A rules allow it....
TOP ALCOHOL FLAT - TAF
General
1. Fuel system Mechanized fuel system allowed. The injection system cannot be controlled by exhaust gasses.
2. Fuel Blown Methanol. Unblown Nitro-methane, no percentage limit.
3. Clutch, Flywheel & Bellhousing All boats utilizing a clutch must have a steel hydroformed bellhousing. All boats must have a 360-degree flywheel cover.
4. Neutral Device A devise to allow engagement and disengagement at will of the propulsion device while the engine is running.
5. Prop shaft The minimum prop shaft diameter through the back of the strut is 1-1/8.
Engine
1. Any internal combustion automotive type engine permitted. No dual engine set-ups allowed. Maximum 565 cubic inch and 4 valves per cylinder.
2. Supercharger Required roots-type maximum size 14-71, 19 case length, 11-1/4 case width, maximum rotor cavity diameter is 5.840. Helix is restricted to maximum rotor spiral of 6.5 degrees per inch of length. Maximum overdrive 70%.
3. Screw-type superchargers are not allowed.
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The UNBLOWN fuel deal (as run in NHRA) doesn't work in a boat with a "conventional" set-up. An unblown fuel motor (as run in NHRA) needs a tremendous amount of "load" on the motor to make it run right. Nobody has yet devised a way of putting more "load" on the motor in a boat.
Jim Pisciotta tried unblown fuel unsuccessfully for a couple of years in a Top Alcohol Hydro, before he pulled the plug on it.
I think a way to make it work would be to put the equivalent of a automotive brake rotor on the drive shaft somehow. Then have a brake caliper and brake shoes activated by a timer system to "drag" on the rotor to apply a "load" on the motor to allow it to efficiently burn all the fuel that is run through a modern style fuel motor...
What do you think???
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Those guys say they get 40 passes on a crank and 80 on a set of pistons and rods if all goes well. (Pretty sure it was that order) Thats affordable if you dont blow your stuff up a lot. They say the biggest money killer is burning up the heads. The intake is basically zero maintenance except a few small pieces.
After talking to 4 seperate teams and a slew of other people I started running small percentages in the shovel nose with the BBC. Just 10% puts out quite a smell :supp:
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The UNBLOWN fuel deal (as run in NHRA) doesn't work in a boat with a "conventional" set-up. An unblown fuel motor (as run in NHRA) needs a tremendous amount of "load" on the motor to make it run right. Nobody has yet devised a way of putting more "load" on the motor in a boat.
W-drive and dual props should do it.
