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Old 04-07-2011, 02:07 PM
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Smoke tap on Jtec Pitts muffler

Where is the best place on a Jtec Pitts muffler to install a smoke fitting??

Thanks!!
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Old 04-07-2011, 02:25 PM
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On the header, just aft of the inlet from the cylinder head. That's how I done mine and it works great.
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Old 04-07-2011, 04:00 PM
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ahhh perfect timming!!! awesome thanks!!!
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Old 04-07-2011, 04:03 PM
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The basic idea is to get the oil into the hottest area with the least pressure, but not close enough to the exhaust port that the smoke oil could run into the cylinder when the engine isn't running.

Good luck!
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Old 04-07-2011, 04:06 PM
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Quote:
Originally Posted by phippsj View Post
On the header, just aft of the inlet from the cylinder head. That's how I done mine and it works great.
Yep!
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Old 04-07-2011, 04:34 PM
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Very cool, thanks!!! I'm going to work on it tonight..... I was also considering wrapping one loop of copper or brass tubing around the muffler body as sort of a pre-heat, or is that a waste of time?

I've never had smoke on anything larger than glow engines or 20cc gas, and I have the perfect three year old plane that won't mind a little smoke oil in the cracks! DLE55 H9 Extra 260, should be fun for huckfest.
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Old 04-07-2011, 08:00 PM
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Preheaters are for glow engines. That DLE55 will be plenty hot enough. Just shoot the fluid directly into the header.

Just a helpful hint: flow test your setup on the bench before running the engine at the field. Get your end points setup on your radio and get the right flow (oz per min) suggested by your smoke pump manuf. TME recommends oz per minute = engine_displacement(in cubic inches) X 2 as a target. Just pump the fluid into a graduated container to dial it in. You will have to adjust at the field once you get it in the air.


Takes a little work and patience but that smoke is cool!
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Old 04-07-2011, 10:14 PM
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Good point on the pre-heat.....

I got it all set up but forgot my soldering iron at work, so I just have to add a couple of barbs and wait for a nice day. I put smoke on a DLE-20 in Dec. and have not flown it yet, but even that little guy made TONS of smoke with just a VERY small amount of oil. I am using the TME system, I've seen too many people with the sullivan sustems take a long time to dial them in. Took me about 15 minutes to get the TME set up, flow rate pretty close and mixed to throttle in my 9303.

Thanks again for the assistance! T.
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Old 04-07-2011, 10:52 PM
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Quote:
Originally Posted by phippsj View Post
Preheaters are for glow engines. That DLE55 will be plenty hot enough. Just shoot the fluid directly into the header.

Just a helpful hint: flow test your setup on the bench before running the engine at the field. Get your end points setup on your radio and get the right flow (oz per min) suggested by your smoke pump manuf. TME recommends oz per minute = engine_displacement(in cubic inches) X 2 as a target. Just pump the fluid into a graduated container to dial it in. You will have to adjust at the field once you get it in the air.


Takes a little work and patience but that smoke is cool!
Yep again!!!
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Old 04-08-2011, 10:04 AM
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Quote:
Originally Posted by phippsj View Post
Preheaters are for glow engines. That DLE55 will be plenty hot enough. Just shoot the fluid directly into the header.

Just a helpful hint: flow test your setup on the bench before running the engine at the field. Get your end points setup on your radio and get the right flow (oz per min) suggested by your smoke pump manuf. TME recommends oz per minute = engine_displacement(in cubic inches) X 2 as a target. Just pump the fluid into a graduated container to dial it in. You will have to adjust at the field once you get it in the air.


Takes a little work and patience but that smoke is cool!

wow that was helpful. thanks!
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Old 04-08-2011, 06:59 PM
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were are the pics.?
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