ORIGINAL: psgugrad
has anyone here seen/heard anything about or seen one run at your flying field? It seems like an interesting concept and I want one, I just want to make sure I'm not buying a $200 paperweight. I've heard people knock gas engines this size, but after my first gas engine (a DLE 20 in a 4*120) I'm pretty much abandoning glow. I like the 4*120, but have to carry it in my company cargo van as it won't fit well in the car and it's a pain as I have to unload the van first, etc.... I have a well-worn 4*40 that I love, but the covering is coming off from castor oil.
In a 40-sizer, the cost of glow fuel isn't really a concern, but the gas engines don't get slop all over your plane, plus they run soooooo much better. Glow engines only run great when the compression, carb settings, fuel, and glow plug are all 100% perfect...move any one of those 4 factors even slightly from ideal and all bets are of. THe gas motors are so much less sensitive. I would be curious to know:
How does the thing run?
Is it powerful...really as powerful as a .46 glow...at least a plain-bearing one like an LA .46?
are parts available? are they reasonable priced, or does NGH try to pull an OS Max on us with regards to parts pricing?
what is the cylinder construction? steel sleeve? chrome-plated brass?
any input appreciated
Mike Norris
I'm testing one GT9 for our local distributor .
Engine is very powerful if you have in mind the fuel it uses (no nitro) , much more powerful than the OS46LA.
Needles settings process is more similar to a glow engine than a Walbro fitted gas engine, but on mine i have no problem to get a reliable and low rpm on idle and very good transition.
Also i've tested on this engine a new spark plug 1/4*32 with iridium tip. I must make more test, but i'm satisfied with performance with this new spark plug.
Sleeve construction with steel sleeve, no ABC or ABN construction.
If you have in mind the engine comes with a true RCEXL ignition, a special and a costly spark plug, the fuel delivery system pump-regulator, i think is well priced.
But also you must think where you want to mount this engine. The CDI , battery for the CDI and FDS, opto kill switch and or a switch will increase the total weight of your model, not a good idea if you want for extreme 3D. But there are much more airplane models for this engine.
Only remember to use a good quality oil mixed at the correct ratio needed by this engine ( no less than 25:1) .
Best regards