THE NEW MT 57CC ENGINE

[jrjohn]

	Quote: Originally Posted by zoomer260
	Me too, for a say 18lb. heavy "50 cc (yeah right) plane". All these 50cc planes seem a bit heavy for 50cc. We put 4.2's in anything approaching 20 lbs. and 60cc in the grey area. And I was never a light plane freak, just powered 'em accordingly. Plus I have never been a "3D" pilot but this season would like to try my hand at harriers just so I can get to the slow rolling harrier. AND I need all the help I can get! I was kinda hoping that I could put this one on a 17-18lb. plane and put the DL on a fifteen pound plane I also have. I like the price tag and hope it proves out, I'm pretty sure it will. I'm trying to figure out why it is any better than a "lightened" G-62. I guess I compare all the "new" engines to Zenoah, Quadra and Sachs. A pound or less in weight for wing loading only does not always make enough differance? When a trade off in power is part of the price ? COST is why !!

I'd prefer the MT over the lightened G-62. the MT-57 is lighter, and one big plus is the rear carb with reeds. Much easier throttle and choke setup, and no blowback of fuel because it has reeds. One thing I notice a lot with the side carb engines (not the G-62 in particular because I have never seen one) is that they tend to have problems with air hitting the metering diaphram, causing preasure problems and subsequent flameouts. I had a 3MM that did this.

[rcign]

Gonna be VERY interesting...RC Ignition is Larry's service center and a dealer...
Nice to have a choice between the G62 lite side carb and the MT57 rear carb...Performance is close...
And the best 26cc engine, the G26, converted with RC EXL ignition...
I also mport RC EXL ignitions direct from China...
Looks like my website needs a MAJOR makeover.....
FWIW, MY conversions have a carb rotator that gives a straight shot to the throttle servo..What's easier ??

[sinergy]

Now thats the best comment I have seen in this thread... actually the 2nd best. I will leave the first one alone because it doesn't deserve attention haha.

I do have a serious question though Mr. Ralph. Are you going to run the 57 against the beloved G-62 or have you already?

I want to know flat out which is stronger... I am curious.

[rcign]

I haven't even SEEN a 57 yet, but it will probably be a little stronger, based on Tomy and Rich Border's numbers...The DL was a little stronger with the same prop....
Soon as I get a 57 I will dissect it and test some props...

[sinergy]

Cool.. I will be looking forward to hearing about your tests!

[RTK]

	Quote: Originally Posted by sinergy
	Cool.. I will be looking forward to hearing about your tests!

Me too. I know Ralph will give an honest review. Just to throw out a number, my G62 light turns a Mejz 22x10 at 7400.

[zoomer260]

	Quote: Originally Posted by RTK
	Me too. I know Ralph will give an honest review. Just to throw out a number, my G62 light turns a Mejz 22x10 at 7400.

That's a good number. I gotta get a Menz prop or two to try on the DL just so I have personal experience for comparison purposes. In fact, I need to get all kinds of props because one of these days I'm gonna get off my wallet and send one of the G-62's to Ralph.

I'm in need of (again) personal experience with both side by sid to know where things really are with all the 50cc class engines. I'm aware that I as well as most now consider 60cc (old school) in the same class as the "new" 50cc engines.

SEND RALPH a engine !! We are all waiting on his review !!

[rcign]

RTK, your 62 lite is repaired, shipping tomorrow..It's lighter now without the sensor bearing and has a new RC EXL ignition circuit...
Larry says my MT57 engine is shipped...

[RTK]

Thanks for the prompt service Ralph. As always, out standing!

Looking forward to the 57 numbers and evaluation.

[bbagle1]

I just purchased one of these today for an SD models 30% extra. I know it is still new and nobody knows much but what prop should I start with? 22x8 or 23x8? Also what voltage does the ignition need? 4.8 or 6? Hope this engine lives up to at least some of the hype.

[RTK]

For the ignition no need to go over 4.8. As for the prop, if this thing has the poop people are saying, go with the 23x8. The 22x8 will be a little small unless it is one of the thicker heavier loading manufacturers props.

[soarrich]

I have a SD 260 30%er, it's a very clean airplane, much more so that a Yak 54, after the test I did with my MT57 I'd go with the 23x8 or 23a.

I found the stock LG where a little soft, so with a 23 incher you'll want to grease it in. I found that if I slow it down to land it just keeps raising the nose and slowing with the aft CG I'm using. I've got a 9C Futaba and found that I put idle down at 3 on the e switch and mix 5 with throttle to elevator with a 3 also on the e switch it lands very well now. The idle down slows the engine about 150 rpm, and the mix puts in just a little down that it needs to not keep slowing. Mine has a MT62 in it.