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| So I've been building an ultralight |
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| nitrogen_widget:
is throttle body out of the question? for an old car those things are great. so easy to tune. not sure if planes can even use them since more stuff can go wrong with them. what about fuel injection? or same reliability issues? my dad has an old triumph that needs a full restore. it was a straight 4 with dual carbs and if one had an issue he wasn't going anywhere enjoyably because two cylinders were getting more gas than the other 2. Imagine it's like that? yes i have not much of an idea so curious. |
| danny_galaga:
There is a fuel injected version of this engine. Fuel injection is fairly popular in aircraft now, but not ubiquitous like in the auto world. Too expensive and too much mucking around for me to convert. |
| danny_galaga:
Apparently the weight of the carby floats can increase over time. Something to do with it retaining too much fuel or summink. It's a big enough deal that I was going to just replace them regardless. But surprise, surprise- they ain't cheap! Luckily I found my little set of weights I made over 30 years ago when I had access to a really accurate set of digital scales. Smallest weight is 0.05 grams (50 milligrams ). So I knocked up a simple beam balance scale ⚖️ and weighed the floats. They come in pairs and can't weigh over 7 grams. Both sets came out at 3.2 and 3.15 😎 Yes, I could buy a set of accurate digital scales quite cheaply, but where's the fun in that? Building the scales was probably the most fun I've had with this airplane for months 😄 |
| nitrogen_widget:
sounds like the floats are not water or fuel tight right? what about new floats? IDK my small engine experience is my old log splitter with a pull start you have to wind manually and a magneto stopped providing spark and after futzing with magneto and about an hr of yanking on it with no luck total, my solution was to go look for a newer engine. which i found. it was so old it has a belt drive electric start, but it does have a coil. so newer! i just have to wire it up properly now because it was on an old dead mower someone apparently stole the wiring from?. :) |
| danny_galaga:
--- Quote from: nitrogen_widget on October 03, 2023, 10:08:05 pm ---sounds like the floats are not water or fuel tight right? what about new floats? --- End quote --- You need two pairs of these. https://www.aircraftspruce.com/catalog/eppages/tempest_ms80-430.php?clickkey=409219 |
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