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Building Tips and technical articles. => 1/2 A building. => Topic started by: Allan Perret on April 13, 2010, 11:28:25 AM
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After it's broken in, how long will it run on 1 ounce of say 20% nitro fuel ?
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Mine will run about 6 min 10 sec. on one ounce of Norvel which is 35%.
Bill Hodges
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100 psi? Bloated? Are you pulling out legs? I would have thought that would blow the endcaps off the tank!
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LL~
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I have a 1-1/4 oz tank, 20% fuel APC 6-2 and 52' handle to thrust line and I run out of fuel in the overhead 8. It is running a little rich but if I lean it down any more it's just too fast. Cox TD venturi (.116") should I go smaller?
Update: I just found a way to make the tank bigger using 100 psi compressed air LOL. Tank was 34cc now bloated tank is 37cc. Just have to be careful not to pinch it back down. Also, the manual says these things run ok on 15% so I've got some flying to do.
Motorman 8)
Hi Motor Man, why are you using a 6"x2" prop? can the 1.0cc Norvell pull a 7"x4" prop? If the Norvell can swing
a 7"x4" prop, you'd get less RPMs, hopefully usable thrust, slower, more manageable lap times and far better
fuel economy. That is a small displacement class "A" engine, not a Half-A engine. This is simply a suggestion;
because I'm not familiar with 1.0cc glow engines. I am very familiar with 1.0cc diesel engines; that make very usable
power with 7"x5" and 7"x6" props for control line flying. Best of luck. Tony G H^^
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Hi Motor Man, why are you using a 6"x2" prop? can the 1.0cc Norvell pull a 7"x4" prop? If the Norvell can swing
a 7"x4" prop, you'd get less RPMs, hopefully usable thrust, slower, more manageable lap times and far better
fuel economy. That is a small displacement class "A" engine, not a Half-A engine.
This is simply a suggestion; because I'm not familiar with 1.0cc glow engines. I am very familiar with 1.0cc diesel engines; that make very usable
power with 7"x5" and 7"x6" props for control line flying. Best of luck.
Tony G H^^
The .061/1cc displacement engines are allowed in the official AMA 1/2A scale event and many of the unofficial 1/2A stunt events that are being held around the country.
For your information and since you admit not being familiar with these 1.0cc glow engines, the Norvels like to run at a high RPM on small props.
Keith
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Manual says 6-3 is max prop and the engine peaks out at 22,000. I found a nice prop that i will try tomorrow a REV UP 6-3 which pitches out to 2.5 and has less load around the hub area than the APC 6-2 and has more blade area. It's a pristine copy that would make a great pattern for a mold but it's wood so, hope I don't break it.
Motorman 8)
If you know what you want in a prop and you can mold your own props, carve your plug plug. Hell, that ain't half as hard as everything else. You could stack up 4 or 5 Popsicle sticks and carve that into a plug. What's holding you back? Just make sure you carve something that the engine is known to like and don't try to make the engine run like LA.46 because it ain't.
Type at you later,
Dan McEntee