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-   -   NGH GT70Twin new when? (http://www.rcuniverse.com/forum/gas-engines-142/11077095-ngh-gt70twin-new-when.html)

JIMMYMUGUREL 05-11-2012 10:24 AM

NGH GT70Twin new when?
 
1 Attachment(s)
Hello Mr. Michaelchow,

When the new engine will be ready? Looks great and if quality is just OK, could be successful. For now I bought GT9 to test the quality and I bought it only after I saw GT70Twin.

I wish you success.

clivemc 05-11-2012 12:29 PM

RE: NGH GT70Twin new when?
 
i hope the exhausts dont come like that ........

bcchi 05-11-2012 12:37 PM

RE: NGH GT70Twin new when?
 

Quote:

ORIGINAL: clivemc

i hope the exhausts dont come like that ........
That is a pretty dumb looking exhaust set up.
BCCHI

ec121 05-11-2012 03:23 PM

RE: NGH GT70Twin new when?
 
Not only dumb but they also look heavy.

michaelchow 05-11-2012 07:11 PM

RE: NGH GT70Twin new when?
 
thanks for your support, Sir, I am sorry that I can't confirm the delivery time until now, I need solve some problems before releasing.
yes 70 will be matched with two polished muffler.
and 70 still use sleeves and will be heavy.

all other size use sleeve, and crankshaft inlet structure, so the crankshaft is heavy and accumulated weight is heavy. I am sorry that I insist the continuing way with glow engine.

earlwb 05-11-2012 07:24 PM

RE: NGH GT70Twin new when?
 
I like the design myself. The mufflers are not those stupid cheap useless noisy tin can crap things everyone is slapping on the engines. You have to buy more expensive canister mufflers to quiet down those engines that have the crappy mufflers on them anyway.
At least the muffers on this engine look useable without you being forced to buy something better.
I like the sleeved cylinder design too, granted it comes out a little heavier, but it doesn't look like a converted trimmer engine. It looks more like a model airplane engine.

Turk1 05-11-2012 08:20 PM

RE: NGH GT70Twin new when?
 
This is a video of how a half GT 70 flies.:)
http://www.rcuniverse.com/forum/m_10...m.htm#11077653

rampage-1 07-11-2012 06:39 PM

RE: NGH GT70Twin new when?
 
The design will work great in a warbird setup and a PawneeI like it

Turk1 07-11-2012 08:52 PM

RE: NGH GT70Twin new when?
 
GT70 twin hoping be ready about end of the year.Before it there comes GT38 4 stroke single.August/september .

MetallicaJunkie 07-11-2012 09:35 PM

RE: NGH GT70Twin new when?
 
so its a .70 or 70cc?

Turk1 07-11-2012 11:32 PM

RE: NGH GT70Twin new when?
 
GT 70 will be simply two of a GT35=70 CC twin.

TimBle 07-11-2012 11:40 PM

RE: NGH GT70Twin new when?
 
I like those exhausts! Will be perfect for the Ta 152H I've started resourcing for build.<div>Please keep em and if you lighten up the engine, all the better. Nothing like a better power to weight ratio.</div>

Turk1 07-12-2012 12:33 AM

RE: NGH GT70Twin new when?
 
Hi Tim unfortunately NGH engines are rather some heavy comparing others mostly because of separate sleeve system design(instead of hardened cylinder wall) and glow type mount lugs.

TimBle 07-12-2012 02:29 AM

RE: NGH GT70Twin new when?
 


I can't see the GT 70 being a beam mount.....

as for the weight, thats a design challenge and I'm pretty sure Mr Chow can get the weight down. A tinner liner design could work with reinforcement on the outside. I can't see that a liner wil add more than 20gr to the weight.

Then he could also stress the engine further to product more power than others in this class</p>

michaelchow 07-12-2012 04:57 AM

RE: NGH GT70Twin new when?
 


Tim, yes you are right, the weight is not just from liner, and other parts add up. GT35 is heavy, so T70 is heavy, at about 2.1kg, it is with a "bowl"-style mounting. and someone like the stock-muffler with slant-pipe, and the welding-muffler with vertical-pipe is ok too.
I think I am not good on controlling the engine weight, focuced on strong parts. but I am doing best to control the weight of NGH's first 38cc 4-stroke within 1.4kg, it will bes tested next week and can get the data. thanks!</p>

mikes68charger 07-12-2012 05:19 AM

RE: NGH GT70Twin new when?
 
Great looking motor, I just wish when one makes a twin they could use the smalles spark plug they can or atleast slant them back as fitting a twin of this size is hard on most non 3D birds And as we say its not supper light so it should be designed more for no 3d use.

You single 4 stroke sounds like a great ideal. I have one you your ngh35R, and while I had issues at first with the muffler brake off, it has been a great motor and seems to get better and better as I have not had many motors that will leave a DLE30 in the dust.


smackay 01-26-2013 01:43 PM

RE: NGH GT70Twin new when?
 
Michael, I have the 38cc 4 stroke, great engine, I was wondering if you had any plans to make a 76cc twin using the 38 head parts?

Turk1 01-26-2013 10:17 PM

RE: NGH GT70Twin new when?
 
Hi, he is working hard for some 4 strokes.I think 4 stroke twins are on the way but when?

JIMMYMUGUREL 03-15-2016 11:46 AM

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JIMMYMUGUREL 03-18-2016 01:15 PM

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