THE NEW MT 57CC ENGINE

[mistydee0]

Hey guys, I myself dont even have one to please customers!!!!!!! Ralph will get the first one of the litter. Tomy aired me one and soarich cried so hard that I had one and he did'nt so I had to give that one up or loose a flying buddy. Today I get a message on the machine I WANT ANOTHER MT 57 , now thats what I call having mucho GALL!!!! Thats like crying I'm hungry with a loaf of bread under each arm!!!!!
Only kidding Rich, he works very hard to test for me and deserves anthing I can do for him. Now I hope the "OLD COOT" in Arizona dont get on my case. I would hate to loose my greatest asset to my network of good people. I guess there are 30+ other people counting the days until they get there's. I hope the plane from
China dont run out of gassssssssssssssssssssss.

Larry LS PRO ENGINES

AIRBORNE RANGER

[soarrich]

	Quote: Originally Posted by rcign
	I haven't seen the carb insulator block yet, but the MT50 and MT62 use a black plastic material with inserts for the threads.....

Ralph

The carb bolts pass through a carb adapter plate, then through the reed cage, then thread into the back of the crankcase, all compression loads on the plastic induction parts, very cool. I want another one, but I understand I'm at the back of the line now that I already got one, but this line streaches around the block, it's like the opening night of a Bush bashing movie in NYC.

[rcign]

Good, no need to change it...Tomy is doing it right...

[jrjohn]

	Quote: Originally Posted by soarrich
	Ralph The carb bolts pass through a carb adapter plate, then through the reed cage, then thread into the back of the crankcase, all compression loads on the plastic induction parts, very cool. I want another one, but I understand I'm at the back of the line now that I already got one, but this line streaches around the block, it's like the opening night of a Bush bashing movie in NYC.

Rich, do the standoffs bolt from each side, or is it a through bolt?

[joe barrington]

Hi JrJohn,the Standoffs bolt directly to the crankcase studs that protrude to the rear of the case,they r also slotted to enable an adjustable wrench to tighten them up.

Personally i think there 2 long by 3/4'' for most planes.See my pics on page 1 of this thread with a ruler in photo

[soarrich]

99% sure it's through bolted, that is how the MT50 is done. Larry gave it to me with the standoffs on, it was in my plane the next morning ready to fly, then it blew 20mph until the weekend and I don't fly on weekends. I'll have a flight report tomorrow I hope!

[soarrich]

The length worked out dead nuts perfect on the Laniar 87" Yak, I would have liked maybe 1/4" more, the prop clears the cowl by 1/8" now. Any shorter and the carb would have to be in a hole cut in the firewall, it's not much over a 3/8" away now, but that works on this plane because they have a 1" hole right behind the carb. A choice of maybe 3 lengths would be a nice option though.

[Al Lewis]

	Quote: Originally Posted by zoomer260
	I thought that the MT57 was turning a 24-8 in the high 6000 range ? These numbers we're talking here seem to be in line with my DL50. And I expect to reach 7100 minimum on a 23A Vess when I get a chance to work it some. Looking foward to you getting the engine Ralph. Larry SEND HIM the engine !!

It looked a little strange to me also. Thought maybe there were a set of numbers I missed.

[jrjohn]

So much really depends on the prop. Last year I was running a 22x8 3W prop on a DL-50, It was turning 7700, I tried a 22x8 TBM and it nocked my RPM's down to 6300. The austrailian video shows the guy taching the MT-57 at 7000 with a 24x8 He doesn't indicate what prop it was. After landing he made a comment that it could use a bigger prop.

[reyn3545]

Not to hijack th thread.. but are there any comparisons (thrust, RPM) of the major props out there? I've seen different performance from different brands in the same size prop, but I hate to buy "everything" to find the one that works for me.

[rcign]

Props are not perfect...The same props from the same manufacturer will vary...
I can run a G62 with a 22-10 Dynathrust and get 7400 rpm..
Same engine, 2 minutes later, MSC 22-10 prop, 6400 rpm...
Other brands are somewhere in between...
Now, I could say G62s will turn a 22-10 prop 7400...But I won't, it's not a number that means anything...Somewhere aroung 7000 is a good average number with most props..
Engine sellers will find the highest rpm prop they can so they can advertise their engines that way...
Horizon says the G26 turns a 16-8 prop 8900...My G26s with a Mejzlik 16-8 and no muffler will turn close to 10,000...It's all in the advertising...HP numbers are worthless, as is the ThrustHp program...It's on about 8 lbs high on the numbers for an 18-6 @ 9000...They say 25.8 lbs thrust..Actual measured at the tail wheel number is 17+.......Buyer Beware....
There was/is a website, rcfaq.com, that had numbers taken with various props and users..They vary all over......
I tested a new DL50 when they first came out....6700 rpm with the factory muffler, Xoar 23-8 prop...There are numbers out there as high as 7400..Different prop, different altitude, different fuel mix....I tested a new MT50, 22-8 Menz wood prop, 6800 rpm...Others have reported higher numbers..
The new MT57 should be here next week, will get tested with a 23-8 JXF, I broke the Xoar on my hand...Careless needle adjusting with a running engine...Screwdriver slipped, 8 stiches in my "birdie" finger.....Destroyed the prop..

[reyn3545]

OUCH.. I've been tempted to tune with the engine running, but so far have smartly resisted that temptation!Oh, by the way, did you mention to me in an earlier conversation that you could get an AN APC T-6 race prop for a G-62? I've been looking for one, but can't find it on APC's site, or anywhere else for that matter!