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Hemmings Motor News Blog

Hemmings Motor News has been around since 1954. We're proud of our heritage, but we're also more than the Hemmings full of classifieds that your father subscribed to. Aside from new editorial content every month in Hemmings, we have three monthly magazines: Hemmings Muscle Machines, Hemmings Classic Car and Hemmings Sports and Exotic Car.

While our editors traverse the country to find the best content for those magazines, we find other oddities related to the old-car hobby that we really had no place for - until now. With this blog, we're giving you a behind-the-scenes look at what we see and what we do during the course of putting out some of the finest automotive magazines you'll ever read.

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Boeing Powered T-Bucket

Posted July 25, 2011 2:18 PM by dstrohl

Here's a fiberglass Model T roadster with a rather interesting drivetrain: a Boeing 502-6 turboshaft engine that was re-purposed from a US Navy minesweeper.

First used by the Navy in the Fifties, two of these turbine engines would power a magnetic generator that produced an electric charge that blew up underwater mines. A Boeing 502 engine also powered the world's first gas turbine powered helicopter, a modified Kaman K-225 in December of 1951.

Surprisingly enough, the Boeing 502-6 gas turboshaft engine only produces 160hp at 23,725 RPM and has a super low 3:1 compression ratio. The engine's two through-flow combustors are ignited by glow plug igniters. Fuel consumption is 15 GPH kerosene or Jet A at idle and 18 GPH at full throttle. Acceleration is regulated by a quadrant-type throttle as is used in modern jets. A reduction gearbox spins the output shaft at 2,750 RPM.

The engine is only 43 inches long and weighs around 250 pounds. In the T-bucket here, it's oil cooled by a confiscated John Deere 8760 tractor oil cooler and an auxiliary fan. The transmission is hydrostatic, out of a 715 International combine, and hydraulic oil is supplied by a 30-gallon tank under the seat. The fiberglass T-bucket body sits on a tube frame, with front and rear spindles from a 1968 Fiat 124. It uses front rack and pinion steering from a Mustang.

Two beer kegs in the bed of the truck supply the needed kerosene. The car uses 24-volt electrics as is the standard for military equipment. All that said, the engine and transmission package will only do about 70 MPH, but you sure would have a fun time getting there.

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#1

Re: Boeing Powered T-Bucket

07/25/2011 10:31 PM

Always wondered about using a turbine for something like this.

What does "the engine and transmission package will only do about 70 MPH, but you sure would have a fun time getting there" mean?

Would it spin the wheels until the either the rubber was gone or it got up to 70, would the engine would load down to some lessor RPM, or would the oil in the hydrostatic transmission heat up absorbing horsepower?

Thanks!

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#3
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Re: Boeing Powered T-Bucket

07/26/2011 9:07 AM

This vehicle suffers the problem of any turbine vehicle I have ever read about: Fuel consumption.

In motion, the car gets about 4 miles to a gallon.

It is pretty cool though!

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#2

Re: Boeing Powered T-Bucket

07/25/2011 11:50 PM

Whoever created it, is a master craftsman, and an artist.

Magnificent!!!!

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#4

Re: Boeing Powered T-Bucket

07/26/2011 9:27 AM

"Re-purposed"?

Is someone verbing nouns here?

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#5
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Re: Boeing Powered T-Bucket

07/26/2011 11:08 AM

It seems you are British so you can be excused for questioning the use of english!

I used to wonder about that word too, until I realized one day that it is useful. Re-purpose is to keep the form of the thing from its original intended purpose, and re-use that same form and material for a new purpose that was not initially intended.

In short, "re-purpose" is the proper form of the modern vernacular "McGyver".

Here in Sebastopol we have an artist who re-purposes metal parts from junk into very funny sculptures.

http://laughingsquid.com/patrick-amiot-creating-sebastopols-eclectic-sculptures/

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#6
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Re: Boeing Powered T-Bucket

07/26/2011 11:24 AM

Useful. Thanks.

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