THE NEW MT 57CC ENGINE

[robertp17]

	Quote: Originally Posted by bbagle1
	I tried to fly the engine today but I ran into some problems. I am getting radio interference from somewhere. I was using a noon-resistor type plug which I think may have caused the glitching. It was either that or a metal clevis on my throttle arm but the metal clevis is on a nyrod. Will this still cause intereference? Or do you all think it was because I had the wrong plug in? Any other ideas? And yes my ignition and battery and far from anything else.

Correct me if im wrong here but I was understanding that you should never use a non resister plug in these things, or you will get RF interference.

[Al Lewis]

	Quote: Originally Posted by robertp17
	Correct me if im wrong here but I was understanding that you should never use a non resister plug in these things, or you will get RF interference.

You shouldn't. That's why they have the resistor, to eliminate the RF interference in radios, etc. Why isn't Ralph answering these questions???

[mistydee0]

	Quote: Originally Posted by robertp17
	Correct me if im wrong here but I was understanding that you should never use a non resister plug in these things, or you will get RF interference.

Guys,
Just use a NGKBPMR6A and you will not have any problem related to spark plugs. The only difference between the 6A and the 6F is the hex that the cap fits on. The 6A uses a gasket to seal and the 6F has a taper to make it seal. You have to use the proper plug to match the ignition box you have. IE the 6A has a larger hex than the 6F. You must use the right plug matched to your ignition, as the caps are not the same. 6A has the large cap, the 6F has the smaller cap. The 6A plug takes a 3/4" socket and the 6F takes a 5/8" socket.
All the new engines in stock now come with the NGK plug, and not the Chinese plug.
So that should end the confusion about the plugs. I have just ordered 50 each of the [2] sizes so I will have them in stock. Sorry for the confusion!!!!!!

Larry LS PRO ENGINES


AIRBORNE RANGER

[hughes500e]

4th 5 minute run today on the 57 with a XOAR 23A. Choke on 4th or 5th flip she'll light up, choke off 4th flip and she starts right up. I had to open up the bottom end 1/4 turn or so to get a cleaner transition. I'm running 87 octane (my bad) at 32:1 with the stock muffler and max RPM is 5900

[hughes500e]

5900 was not acceptable so I checked the timing. I made a degree wheel on a blank CDROM disk and sure enough I was firing at 14-15 degrees. I managed to dremel out the hall sensor bracket and achieved 25 degrees. She fired with choke on, 2nd flip and 3rd flip running with choke off. It was a different animal with the timing advanced, very happy. It transitioned extremely well, idled a lot smoother and I tached 6220 on the XOAR 23A. I may try and squeeze that extra 3 degrees out of it but I am impressed with it now. Compression is getting stronger with each flip. I'm sure when I run higher octane and less oil I should be seeing 64-6500+ RPM. Obviously the timing has to be changed, knowing what I know now and the difference it made, don't run your engine without adjusting the timing!

Looking good!

[AJT]

Put 2 gals through the 57 this past weekend, Motor runs flawless!!! Flew from 12 noon until dark. What amazed me was the only time I used the choke was for the first flight, after that the motor started single flip every time for the rest of the day. (no choke). no matter how long the plane sat . One sweeeeet motor this was $$$ WELL spent. I read the plug after every flight and adjusted the high end until I acquired a nice coco brown color. Adjustments are now a done deal. I even played pass the transmitter and everyone who flew the airplane was blown away by the throttle response and idle, which never changes. I hope everyone else who owns the 57 has the same success that I've had.
AJT.

[wildhare]

Are you sure about that rpm? That sounds way low. I tested one MT-57 which had the retarded timing, it still turned a Vess 23-a at 6750. BY comparison the stock 3MM TOC-53 had the same power, and with the new Wild Hare hop up kit installed the TOC-53 turned the Vess 23-a at 7000 rpm.

So either your tach is wrong or there's something else going on, you still have a lot of power in there somewhere that's not getting out.

TF

[hughes500e]

Tried 2 tachometers, same results. Plug looks good, I'm still running a rich mix and the stock muffler. Have you tried running a XOAR 23A ? Perhaps its just too much!

[wildhare]

	Quote: Originally Posted by hughes500e
	Tried 2 tachometers, same results. Plug looks good, I'm still running a rich mix and the stock muffler. Have you tried running a XOAR 23A ? Perhaps its just too much!

I have run a Xoar/Bunny 23-8, my TOC-53 modified spins it at about 6800 rpm which is just about perfect for that engine, right at the power peak.

TF

[Al Lewis]

	Quote: Originally Posted by wildhare
	I have run a Xoar/Bunny 23-8, my TOC-53 modified spins it at about 6800 rpm which is just about perfect for that engine, right at the power peak. TF

He's talking about a Xoar 23A Tom. I think he might mean a Xoar 23 X 8 which would load the engine a lot more then a Vess 23A. They also don't seem to like the stock muffler.

AJT sounds like you got yours right where you want it !!!

[AJT]

Thanks AL!
Yea I am really enjoying this airplane It's nice taking a break from flying my larger airframes, No
pucker factor. All fun. I am in the market for another 35.....40%er but I think I'll wait until winter.
Stay well ..Fly often.
AJT.

[hughes500e]

Interesting, why would I mean something other than what I'm saying; try and keep up boys! LOL
http://azurehobbies.com/product_info...products_id=33
http://www.xoarintl.com/props/ma/PJE.html

XOAR has A B C designations as well as Vess. The pitch is much greater closer to the center of the prop compared to the normal 23x8; obviously putting a greater load on the engine boasting more thrust. I have a 22x10 Zinger prop that I'm going to run it soon, we'll see what it turns!