Turbine scales

[JUICE]

There are no rules for turbine engines in IMPBA. It clearly states nitro and gasoline and there are voltage limits for FE in the rule book. There would have to be rules written and passed by the BOD. I think the chances are slim at best since there are not a lot of these boats out there. To get something in the books for a small few I believe just won't happen. I know that is not what you wanted to hear but those are the facts.

[photohoward1]

Juice, What if a guy shows up with an actual diesel? Would they not be covered? Just surmising here.

There are no rules for turbine engines in IMPBA. It clearly states nitro and gasoline and there are voltage limits for FE in the rule book. There would have to be rules written and passed by the BOD. I think the chances are slim at best since there are not a lot of these boats out there. To get something in the books for a small few I believe just won't happen. I know that is not what you wanted to hear but those are the facts.

[photohoward1]

One more thing.. Guys run Coleman Fuel? This is not Nitro or Gasoline. I'm not arguing, Just pointing things out. Someday if I win there lottery a Turbine would be cool.

[SJFE]

I'll add if saw introduced a turbine class I'd try an hock the farm to build one. I think more than a few guys would do them same if only for the same reason Chuck Yeager firewalled that throttle looking for the monster out there past the edge of the envelope. Some folks just wanna go as fast as possible. Me I'd wanna try it in a boat as close to scale as possible. After All offshore boats aren't out there turning laps and making speed runs on lipo.

[JUICE]

Juice, What if a guy shows up with an actual diesel? Would they not be covered? Just surmising here.

I don't see diesel anywhere in the rule book but and I am not a nitro guy. However it does run in a glow motor. You would have to get with the Nitro Director on that. And Coleman fuel is white gasoline and is legal.

[PatrickM]

Todd,

I highly suggest you pick up an AMA membership to cover you in case something does happen. I believe this covers you to some extent. I have had similar people ask about increasing the cell limits to 14S or running 125cc engines. It all comes down to insurance coverage and the premiums we pay as organizations.

Tyler

A possibly useful suggestion, but keep in mind that the AMA member policy is secondary insurance. It will only cover post litigation costs that your homeowners policy doesn't.

[PatrickM]

Probably a stupid question, but how does one determine the swept cylinder volume of a turbine?

[Todd Fleury]

Housing Diameter:83 mm (3.27")
DimensionsL x W x H approx. 375mm, x 100mm x 160mm (14.8" x 3.9" x 6.3")
Total weight including gearbox:2930 g (103 oz)
Weight of accessories:650g (ECU, Valve, Gastank, Battery, Wires and Tubing) (23 oz)
Idle GG-Turbine speed50000 RPM
Maximum GG-Turbine speed:175000 RPM
Compressor Pressure Ratio2:1
GG-Turbine EGT:480- 730°C (896 - 1346 F)
Mass Flux0.14 kg/s
Idle Output Shaft Speed6000 RPM
Maximum Output Shaft Speed (depending on gearbox version)
19000- 35000 RPMEGT:300 - 360°C (572 - 680 F)
Power-shaft speed:19,000 - 22,000 RPM
Power:8 kW (11.2 hp)
Fuel:Kerosene Jet A1, PetroleumLubrication5% Synthetic Turbine Oil in Fuel
Fuel consumption at full power:260 ml/min
Fuel consumption at idle:90 ml/min
Service Interval50 hours
Drive system Custom water-cooled gearbox

[jaike5]

In order to run in an open class there has to be a class established (rules) within the organization for the boat.
Otherwise the open classes would be a free for all.

As stated in above posts there is classes stated weather it be mono/cat/hydro. I'm sure we are talking power plant here, and turbine falls in the open category . On another note can cats run in hydro since they run on three points ?

Cheers, Jay.

[don ferrette]

As stated in above posts there is classes stated weather it be mono/cat/hydro. I'm sure we are talking power plant here, and turbine falls in the open category . On another note can cats run in hydro since they run on three points ?

Cheers, Jay.

Wrong sir. Open classes are for mixing recognized already established classes together, it is NOT a "run what ya brung anything goes" class.

[photohoward1]

Yes! So can a Tunnel.

On another note can cats run in hydro since they run on three points ?

Cheers, Jay.

[T.S.Davis]

together, it is NOT a "run what ya brung anything goes" class.

WHAT! Just when I was dropping that V12 into my big mono. Back to the drawing board.

Jay, as far as I know you can run a cat in hydro just as you described. We used to do it at the Michigan Cups. Pretty sure IMPBA is the same.

[Doug Smock]

If it's not a mono, it's a hydro.

[jaike5]

If it's not a mono, it's a hydro.

Awesome !! cool we now have two classes, 4 different sizes in each. That should make every one happy

So then I was correct it's closed open class.

I didn't see "RECOGNIZED, ALREADY ESTABLISHED CLASSES" in the rule book , my bad.

[Chilli]

We also have specialized classes. Have you read the rule book? (not being sarcastic) Mono, Cat, Outboard Tunnel, Sport Hydro, Rigger, 1/8th scale. I would think 21 FE classes would make the majority of members happy. (again, not being sarcastic)

And while we're at it, where did you folks see any definition for the Open Class in the rule book? In the IMPBA, the only reference I can find to Open is the LSG Open Offshore class which specifically states "All IMPBA legal LSG engines are permitted". So for anyone looking to run what you brung under the "Open" umbrella, I have news for you. It just isn't there on a national level. In reality, most "Open" classes are combinations of IMPBA defined classes that are permitted on the district or club level or at sanctioned races (if posted on the race flier).