stunthanger.com
Engine basics => Engine set up tips => Topic started by: EddyR on September 29, 2013, 07:42:32 AM
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THIS METHOD IS SO EASY EVEN MY CAT CAN DO IT.
I have left the forum
Ed
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That is a trick I learned years ago from rebuilding engines for combat and racing.
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So thats what Randy was doing when I worked in the shop!!!!!
Ward-O n~
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An even easier way: open NV about 4 turns, prime in exhaust and start. Any engine will run on a prime, regardless of NV setting. Listen if engine stops rich, or leans out. Adjust NV accordingly. It isn't rocket science!
F.C.
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An even easier way: open NV about 4 turns, prime in exhaust and start. Any engine will run on a prime, regardless of NV setting. Listen if engine stops rich, or leans out. Adjust NV accordingly. It isn't rocket science!
F.C.
Or prime in the venturi, then proceed as Floyd sez. You do need to be able to tell from the sound if the engine is stopping rich or lean.
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Once you get a flight where the engine runs to suit you, solder the needle valve so you cannot adjust it. (overemphasis for dramatic effect) n1 S?P
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Yup, this works! And for those other posters with other ways that work for them, well, thats great....but thats not what this post is about. No one says you have to switch to this if you have something that works for you.
AND... Another good side benefit of the way Ed showed me is that you NEVER have to bottom out the needle. Screwing in the needle till it cant go any further can damage and bur the needle and or seat. By blowing in through the fuel tubing method, the air shuts off a little before you physically would bottom out and damage the needle. Every needle has different taper, so when you hear the change in tone and you find the "working range" of any needle from full off to full open, where opening any more doesn't increase flow, then you can set needle in the middle of that range and it will most likely start easily and be within a half turn of where you want to run it. I have passed this trick on to a few people who were just amazed at how well it works.
Thanks again Ed,
EricV
THIS METHOD IS SO EASY EVEN MY CAT CAN DO IT. ~^ Forget three turns out .Forget ST needles go 21 turns in. Forget set at factory. Are you now paying attention. #^ First make sure the hole that the fuel comes out is clear. Remove the needle valve and put your finger over the needle valve threaded end and using a piece of tubing blow air through the needle body. Now you have the needle valve in your hand install in and continue to blow air through the needle valve until you feel it getting harder to blow in to the tubing. Back of the needle 1/2 turn and the motor will run. 90% of the time it will be dead on and not even need adjusting. y1 I showed Eric V this 15+ years ago and Don my now flying buddy and they come to the field and flip the motor and it is ready to fly. I watch guys spend 1/2 hour trying to get there motor to run and I show them this trick and the motor starts right up.
It works y1 y1 y1 y1 y1 y1 y1 y1 y1 y1 y1 y1 y1 y1 y1 y1
Ed