Recent content by sptomh

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    Want Battery Recommendation for Rotax 503

    Upon rereading the article it seems a little ambiguous. I now see that even the provision 8 has a frequency that is lower than recommended. I know that lithium’s are used in a lot of motorcyles which have similar charging systems without problems. The charging system in the 503 is made by...
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    Want Battery Recommendation for Rotax 503

    I had the same question about the compatibility of the Rotax 503 charging system and lithium battery’s. Earth X has a good article online on the subject. Bottom line the newer provision 8 engines with multiple coils and magnets put out a smoother current and would be compatible while the older...
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    Want Battery Recommendation for Rotax 503

    I have a 503 in my Kitfox Lite. I’m considering a Battery Tender 270 cranking amp lithium battery. It has a full battery management system and only weighs 2.2 pounds (about 10 less than my current battery). I think it may be the same battery as the Aerovolts brand for a lot less money. The...
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    Fabric Testing

    Thanks everyone. That helps a lot.
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    Fabric Testing

    Been looking for someone with a Maule tester but no luck. If the quicksilver tester isn‘t appropriate I’m wondering if I can come up with something on my own. I took a pencil eraser and measured the area. Calculated the force to equal the minimum required tensile strength from 43.13 (about 13...
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    Fabric Testing

    Ok. I thought the shiny ”sailcloth” that Quicksilvers are covered with was something else. Sounds like I can just use the quicksilver tester with their recommended limits. Airplane was covered many years ago but it has been inside it whole life. Thanks.
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    Fabric Testing

    I recently purchased a light aircraft (maximum gross 550 lbs) the was covered with PolyFiber Light (1.7 oz./sq. Ft.) many years ago. The fabric seems good to me but I’d like to test it. I don't have access to a Maule tester and new ones are over $500. I’ve seen the reasonably priced...
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    STOL Floatplane

    Thanks!
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    STOL Floatplane

    Hi, I live on a small lake in northern Michigan and I'm wondering if it would be possible to safely fly a light airplane in and out of it. The lake is only about 1200 - 1400 feet long and has 50' trees at one end (clear on the other). I've seen video of an ultralight Kolb on floats and that...
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