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  1. #1
    skaliwag's Avatar
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    Pee Wee + SPI

    Anyone tried to give a Pee Wee a taste of SPI?
    Real Airplanes have Round Engines and Two Wings.

  2. #2
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    RE: Pee Wee + SPI

    I'm pretty sure they already have it?

  3. #3

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    RE: Pee Wee + SPI

    I've just checked 5 of mine-covering about a 30 year production range-they ALL have SPI-and without miking them, it seems to be the same-about 0.015" -in each case. I suppose it is possible that the R/C version-with the rotating exhaust throttle -might have had the lower edge of the exhaust port raised to eliminate SPI-as was done with the QZ 049-but as I don't have an R/C Pee Wee I am not in a position to confirm this.
    How much SPI is optimum is another matter-presumably, you could play with cylinder shims a la Kustom Kraftsmanship- to set up the engine for optimum timing-but I've never heard of anyone producing 020 cylinder shims. given the size of the Pee Wee, you'd need a proportionately thinner range of shims than those used on 049s...........

    ffkiwi

  4. #4
    nitroairplane's Avatar
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    RE: Pee Wee + SPI

    I am sure not all did.
    What about the ones that came with mufflers?
    All 5 of my non RC ones hae it though.
    A NOSE HEAVY PLANE FLIES BADLY A TAIL HEAVY PLANE FLIES ONCE!!!!
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  5. #5
    skaliwag's Avatar
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    RE: Pee Wee + SPI

    When I posted this I was looking at one of my old motors. I had another look today and found the cylinder was not screwed home.. It now has SPI... Thanks all..
    Real Airplanes have Round Engines and Two Wings.

  6. #6

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    RE: Pee Wee + SPI


    [quote]ORIGINAL: nitroairplane

    I am sure not all did.What about the ones that came with mufflers? [quote]

    .....I don't think Cox ever made a muffler for the Pee Wee. They did make a throttled version-with the same style of rotating baffle exhaust throttle used for the 049, 09 and 15 Medallions. These were not very common-and only appeared in the 80's or thereabouts. IIRC Davis Diesel (or it could have been Ace R/C) made a silicon rubber muffler which could be used on the Pee Wee, and an aftermarket muffler of soldered brass was offered in the UK in the late 1960's (probably as a result of the SMAE compulsory silencer rule)

    ffkiwi

  7. #7
    nitroairplane's Avatar
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    RE: Pee Wee + SPI

    I am 100% sure that cox made a pee wee muffler!
    A NOSE HEAVY PLANE FLIES BADLY A TAIL HEAVY PLANE FLIES ONCE!!!!
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  8. #8
    nitroairplane's Avatar
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    RE: Pee Wee + SPI

    yeah.
    http://coxengineforum.forumakers.com/t1827-lean-green-cox-machine
    I have seen them in the past.
    A NOSE HEAVY PLANE FLIES BADLY A TAIL HEAVY PLANE FLIES ONCE!!!!
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  9. #9
    nitroairplane's Avatar
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    RE: Pee Wee + SPI

    Yuo again look.
    http://www.rcuniverse.com/forum/m_9124192/anchors_9124192/mpage_1/key_/anchor/tm.htm#9124192
    A NOSE HEAVY PLANE FLIES BADLY A TAIL HEAVY PLANE FLIES ONCE!!!!
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  10. #10

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    RE: Pee Wee + SPI

    OK I stand corrected.

    ffkiwi

  11. #11
    nitroairplane's Avatar
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    RE: Pee Wee + SPI

    And Ron Valentine just listed a pee wee with muffler on eBay if anyone is interested.
    I am
    A NOSE HEAVY PLANE FLIES BADLY A TAIL HEAVY PLANE FLIES ONCE!!!!
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  12. #12

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    RE: Pee Wee + SPI


    ORIGINAL: nitroairplane

    And Ron Valentine just listed a pee wee with muffler on eBay if anyone is interested.
    I am

    Beware!


  13. #13

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    RE: Pee Wee + SPI

    Cox sold the Muffler Kit .020 engine part# 2620 for a retail price of about $3.75 according to the one I'm holding in my hand.
    It's a minature version of the ones sold for the .049, .09, and .15 engines. It took me years to find one. Good Luck !!


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