RE: H9 Jackal 50 Prop Jet
[8D] I look, but all I can see is the pretty blue. Great picture. I might say "wrong engine", but that E-60 just loves that color.
Posted on: 9/1/2010 2:47 PM by Author "jettlag" in the forum "Extreme Speed Prop Planes"
http://www.rcuniverse.com/forum/fb.asp?m=9974242

RE: CHAMBER
Angel, you already have all we have. Next, it is your job to help us determine what is best for you.
Posted on: 6/18/2009 8:27 AM by Author "jettlag" in the forum "Jett Engineering Support"
http://www.rcuniverse.com/forum/fb.asp?m=8861618

RE: Jett In cowl muffer arrived
are we ever really back? really gone? does anybody really know what time it is? thanks for all your patience.
Posted on: 10/1/2008 9:33 AM by Author "jettlag" in the forum "Extreme Speed Prop Planes"
http://www.rcuniverse.com/forum/fb.asp?m=8008381

RE: Fastest Engine
That was impressive. In the real old days, when we had a bad day at the field, we would say, "I'm going to buy a boat". Now I know what they really meant.
Posted on: 8/15/2008 11:50 AM by Author "jettlag" in the forum "Extreme Speed Prop Planes"
http://www.rcuniverse.com/forum/fb.asp?m=7848723

RE: Sundowner 50 Results. JETT 60 LX
Good news!!! We probably just stumbled into the right combination for ours. On another note we broke the nose completely off ours a week ago when we decided to see if it would stay on the table in a 20mph wind. The airplane was apparently not trimmed correctly as it did not pull out of the dive in time. As a result our continued tests for the optimum propeller are on hold.
Posted on: 6/2/2008 2:13 PM by Author "jettlag" in the forum "Extreme Speed Prop Planes"
http://www.rcuniverse.com/forum/fb.asp?m=7571053

RE: Pictures: Bob Violett-Dubb Jett
I know nothingggggggggggggggg. Ok, I do know something. I am younger than Violett.
Posted on: 3/21/2008 4:40 PM by Author "jettlag" in the forum "Classic RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=7260988

RE: Fastest Engine
was it rich?
Posted on: 3/17/2008 2:47 PM by Author "jettlag" in the forum "Extreme Speed Prop Planes"
http://www.rcuniverse.com/forum/fb.asp?m=7239041

RE: Anyone got OS 75AX numbers yet? Apples with Apples results?
Here are the exact data from our tests. OS .91 prop rpm muffler 14 x 6 10700 stock 13 x 6 11600 stock 12 x 6 13100 stock 14 x 6 11500 turbo Jett 13 x 6 12300 TJ 12 x 6 13600 TJ 15 x 8 9600 TJ 15 x 8 9100 Stock OS 61 12 x 6 12200 Stock 13 x 6 10200 Stock 12 x 6 12800 TJ 13 x 6 10900 TJ MDS 68 13 x6 10700 Stock 13 x 6 11200 TJ Magnum 75 13 x 6 10900 Stock 14 x 6 9900 Stock 13 x 6 11300 TJ 14 x 6 10400 TJ We also tested the Bisson and found it to be as good or maybe 100 better than the stock mufflers.
Posted on: 1/14/2008 11:35 AM by Author "jettlag" in the forum "Tachometer Readings"
http://www.rcuniverse.com/forum/fb.asp?m=6905372

RE: Mounting Remote Needle?
In this installation, all you have left to worry about is the tank. Remember 80% of your engine problems are the tank and the other 20% are your tank. You will actually get more (good) run time with a smaller tank installed correctly than with a big one installed incorrectly. always make sure you have 1/2" of dense foam around the tank--front, sides, back, bottom, everywhere--such that nothing can touch. Then pack it lightly inside the nose. If you wrap the tank, then cram it into too tight a place, then you defeat the purpose of the foam. Place the center of the tank at the center of a a side mount engine and carb or at the center of the fuel outlet of a more vertical engine (I do not buy airplanes that are not side mount--not worth the trouble of getting the tank right). Finally, if the tank is clean and there are no leaks (make sure the needle packing nut is tight) you will not have any fuel flow issues. Finally, this engine runs a 11 x8 for break in. Run it up to peak and back it down at least 1000 rpm, then sneak up on the setting until it is running nicely in the air, transitioning fast, and not blowing plugs. After you get the setting close, you can try the 11 x8, 12 x 6, or the 12 x 7. If you start getting heat, or have trouble backing down the needle a full 1000 from peak without falling off the pipe, then your prop is too big.
Posted on: 8/10/2007 11:32 AM by Author "jettlag" in the forum "Jett Engineering Support"
http://www.rcuniverse.com/forum/fb.asp?m=6220494

RE: Ballistic Powerhouse--Arrival ! ! !
All Texas Aggies take note. He is a Red Raider and I conned him into that Maroon shirt!!!
Posted on: 4/4/2007 5:18 PM by Author "jettlag" in the forum "Classic RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=5665378

RE: gp viper jett50lx video
just remember what the warranty says: "If you start this engine without a prop, warranty is void". [;)]
Posted on: 1/22/2007 12:00 PM by Author "jettlag" in the forum "Extreme Speed Prop Planes"
http://www.rcuniverse.com/forum/fb.asp?m=5305069

RE: Mini Delta 2000 - almost complete
That is really cool. Let us know how it flies.
Posted on: 12/18/2006 11:19 AM by Author "jettlag" in the forum "Extreme Speed Prop Planes"
http://www.rcuniverse.com/forum/fb.asp?m=5130491

RE: BSE .60LX
I have stayed out of this because I am dead out of crankcases and can't weight an engine at the moment. However, I just weighed a brand new .50 and it weighed 16.9 with a nut and washer. This is the way we publish the weights so you can compare with other engines. However, I weighed a piston and liner and crankshaft of the .50 and .60L and the difference is 10 grams. 1/3 of an oz. All the other parts are the same except the case and it is actually lighter on the .60. This means the difference is less than 10 grams. dub
Posted on: 11/16/2006 2:15 PM by Author "jettlag" in the forum "Jett Engineering Support"
http://www.rcuniverse.com/forum/fb.asp?m=5004114

RE: jett 90 lx
I love to answer these kind of questions, which by the way are good ones. Nevertheless, I get to lecture a bit: First. I have a saying: If you assume the obvious you are probaby wrong. It is obvious that rods need oil holes, right. Well, guess what? They don't. The majority of the pumping is done by the motion of the rod moving up and down on the crank journal. Sort of like flopping your underarms and hands to make crude sounds in Jr. High....Every time it flops from the top of the journal to the bottom it creates a vacuum in the gap, sucking in more oil. Also, the majority of rod breaks are through the oil holes, so we learned (by not listening to the "Experts") that you do not need the holes and that, in fact, the holes make them weaker. This brings us another of my sayings, " People who say, "I know for a fact", usually have their facts wrong." Be careful of the advice you get at the field. Finally, the ports on sport engines will bring in more air and fuel if they do not have the angles. Mine do not have angles. The high rpm racing engines do. Thanks for the questions.
Posted on: 10/25/2006 5:04 PM by Author "jettlag" in the forum "Jett Engineering Support"
http://www.rcuniverse.com/forum/fb.asp?m=4914187

RE: Kingcat-Like Design and Build
wow wow wow nice work
Posted on: 10/18/2006 3:43 PM by Author "jettlag" in the forum "Extreme Speed Prop Planes"
http://www.rcuniverse.com/forum/fb.asp?m=4884439

RE: Diamond Dust Modified
Nice Remote installation. If you still get some bubbles in the line due to heat or vibration, you might try a piece of thin plywood between the new bracket and the remote for additional insulation. I tried it years ago in a F-1 racer--just used 1/32--and the problem disappeared instantly
Posted on: 10/3/2006 12:06 PM by Author "jettlag" in the forum "Extreme Speed Prop Planes"
http://www.rcuniverse.com/forum/fb.asp?m=4822734

RE: Little Toni / Jett BSE90LX Performance from telemetry
This is really great data. Oops, the technocrats would say, "these are very good data". Remember, you can always call dub. Some of those questions are complex.
Posted on: 6/19/2006 1:39 PM by Author "jettlag" in the forum "Extreme Speed Prop Planes"
http://www.rcuniverse.com/forum/fb.asp?m=4406745

RE: BSE .61 LX DUBB JETT
holey moley.
Posted on: 5/1/2006 11:52 AM by Author "jettlag" in the forum "Extreme Speed Prop Planes"
http://www.rcuniverse.com/forum/fb.asp?m=4227509

RE: my cermark f-16 project,fully glassed,now painted
Very nice. Love the color of the carb and mufflers. dub
Posted on: 3/25/2006 12:00 PM by Author "jettlag" in the forum "Extreme Speed Prop Planes"
http://www.rcuniverse.com/forum/fb.asp?m=4080658

RE: Jett .60L
Thanks for the data, or is it those data. I don't speak English.
Posted on: 1/9/2006 10:37 AM by Author "jettlag" in the forum "Tachometer Readings"
http://www.rcuniverse.com/forum/fb.asp?m=3751724

RE: Champ Race
Dave, the Radar gun was set at about 150 ft from the #2 pylon. We usually set it at 200. You get the most consistent results from being back, rather than standing at #2. We also carry wind meters to try and get real with the data. You get between 50 and 75% of the benefit of the wind. I have forgotten that you beat me. In fact, I think I won.
Posted on: 11/1/2005 4:58 PM by Author "jettlag" in the forum "Q-40 Racing"
http://www.rcuniverse.com/forum/fb.asp?m=3511668