Airboat Camshaft Program....
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Airboat Camshaft Program....

  1. #1
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    Default Airboat Camshaft Program....

    I've been working with some 2 customers on airboat engine programs. These are based on BBC and LS platforms. Initial results were good but just got a call from the LS customer. In this work boat up in AK the fuel average has gone from 14 gph to 8 gph while maintaining the same cruising speed. Customers words were, "its like boating for free".
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    Chris Straub
    Straub Technologies

    3HP is an A$$ Whooping!!! JW

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    Quote Originally Posted by cstraub View Post
    I've been working with some 2 customers on airboat engine programs. These are based on BBC and LS platforms. Initial results were good but just got a call from the LS customer. In this work boat up in AK the fuel average has gone from 14 gph to 8 gph while maintaining the same cruising speed. Customers words were, "its like boating for free".
    Did you maybe put the MPG numbers backwards and the MPG increased instead of decreased?
    So many projects, so little time

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    Quote Originally Posted by snoc653 View Post
    Did you maybe put the MPG numbers backwards and the MPG increased instead of decreased?
    Read it again, he used GPH = Gallons Per Hour. Going from "14 Gallons Per Hour" to "8 Gallons Per Hour" at the same cruising speed is an increase in fuel efficiency.

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    Boat is using less fuel per hour running in the same rpm range. Have extended the fuel range by 40%.
    Chris Straub
    Straub Technologies

    3HP is an A$$ Whooping!!! JW

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    Quote Originally Posted by propless View Post
    Read it again, he used GPH = Gallons Per Hour. Going from "14 Gallons Per Hour" to "8 Gallons Per Hour" at the same cruising speed is an increase in fuel efficiency.
    My bad. That is some great work. We should get you do some Airplane cams. If you could half the burn rate you'd make a fortune.
    So many projects, so little time

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    Quote Originally Posted by snoc653 View Post
    My bad. That is some great work. We should get you do some Airplane cams. If you could half the burn rate you'd make a fortune.
    Just did an airplane engine based on the LS platform for a guy in PA. Going to run it on a stand for 200 hours. It has our LS Trunnion bushing kit in it also.
    Chris Straub
    Straub Technologies

    3HP is an A$$ Whooping!!! JW

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    Chris,

    Can you do something for these? Pratt&Whitney R2800 engines........... Had a nose gear problem at Oshkosh Airshow, declared an emergency and set it down! Engines are at our shop and heading on to the engine shop to be torn down for inspection and repairs...

    Spudz

    P.S. Google A-26 nose gear problem Oshkosh..........
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    Quote Originally Posted by Spudpilot View Post
    Chris,

    Can you do something for these? Pratt&Whitney R2800 engines........... Had a nose gear problem at Oshkosh Airshow, declared an emergency and set it down! Engines are at our shop and heading on to the engine shop to be torn down for inspection and repairs...

    Spudz

    P.S. Google A-26 nose gear problem Oshkosh..........
    Ouch! Beautiful plane! One of my favorites, right behind the B25. Its easy to second guess, but why didn't he hold the nose off and chop the throttles as soon as the mains were on? Sudden stoppage inspections can''t be cheap on those Big radials even if they didn't break anything.

    I was thinking more of a Lycoming or Continental Cam design. Could you imagine if you half the fuel burn in a light single how much money a pilot would save?
    So many projects, so little time

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    Quote Originally Posted by Spudpilot View Post
    Chris,

    Can you do something for these? Pratt&Whitney R2800 engines........... Had a nose gear problem at Oshkosh Airshow, declared an emergency and set it down! Engines are at our shop and heading on to the engine shop to be torn down for inspection and repairs...

    Spudz

    P.S. Google A-26 nose gear problem Oshkosh..........
    That would be cool as hell project. I can't but I know who probably can.
    Chris Straub
    Straub Technologies

    3HP is an A$$ Whooping!!! JW

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    Quote Originally Posted by snoc653 View Post
    Ouch! Beautiful plane! One of my favorites, right behind the B25. Its easy to second guess, but why didn't he hold the nose off and chop the throttles as soon as the mains were on? Sudden stoppage inspections can''t be cheap on those Big radials even if they didn't break anything.

    I was thinking more of a Lycoming or Continental Cam design. Could you imagine if you half the fuel burn in a light single how much money a pilot would save?
    This bomber is a P-51 on steroids and doesn't like slow speeds like your loved B-25.......... Actually I had the engines cut just before touch down and had my fingers on the prop feather buttons. The other thing the A-26 you can't hold the nose off like you can the B-25. The main landing gear are further forward allowing the nose to come down quicker, so the nose wants to slap down rather than hold it off.

    Cheers, John
    Last edited by Spudpilot; 10-10-2016 at 12:45 PM.

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