Hey, is it possible to show how it comes .. packaging, manual, accessories supplied? Is the general impression thus far one of a quality product. Just trying to get a feel for the product/company as a whole.

I finally got mine in today. So here's the story.

Shipping was pretty slow, and packing was moderate (see pictures). I weighed the engine alone and it was right at 2lb 15.75oz (3lb). The muffler, ignition, and mount put it right at 3.5 lbs. I will post the exact weights a little later.

Grinding Wheel???:
Temp tonight was around 40deg, 300ft ASL, xoar 22x8 prop. Primed the engine, choked it, flipped and.... POW! It fired the first flip. You really should have seen our faces. After fighting with my Zenoah and my friend’s Fuji and DA this thing was incredible! Two flips later it was purring right along at 1700rpm. Head temps stayed around 160-170deg. A Very Very smooth running engine. The manual states that the "Grinding Wheel" (break in) for this engine is 2 hours at 2000rpm and 2 hrs at 4000pm. Well, I did my two hours at 2000rmp, and it took about three 16oz tanks. I ran another tank and a half at 4000rpm and I couldn’t take it anymore! I let her loose. The throttle response was quite impressive. With the engine running so rich it was spitting all kinds of oil, it was turning right at 7000. I expect this to get better when I quit running Lawn Boy and lean it out. When I feel like it is broken in good and I get her tuned right, I'll post some figures.

My overall impression:
This is a good engine, total flying weight at 3.6 lb, first flip starting, for $370 you really can’t beat it. As far as the instructions go... let's just say that you need to read them with a friend, they are hilarious!! With lots of exciting and interesting terms, like Grinding Wheel.

Some other notes:
When you drill a prop for this engine use a DA prop jig, the bolt pattern is exactly the same. If you ever need to replace a bolt on this thing it is going to be a 10-32. Very nice looking smooth running engine, I am proud of it. I don't know the total power of this thing yet, but as soon as the other hour of "Grinding Wheel" time is up I'll let you guys know.

BTW: With this ignition, a 400mah 4.8volt battery will last aprox 2hrs at idle
For the pictures I have removed my personal information that's why the white boxes.

Let me know if you have any questions!
Nmking09

Does it take the same spark plug as a DA, will DA exhaust fit?

I don't know. I haven't had a chance to measure the exhaust mount. I don't know about the plug either. I'll try and get back to you on that.

Yes, one question: when are you planning to fly it?
'cmon......I have to order mine...

Bye.

Andrea

interesting development...

From what ive seen of chinese motors they have the basic blocks sorted ...(its just an engine) but other stupid things keep braking.

Electronic ignitions are the no1.

Ive also seen 3 CRpros (chinese with red block) throw magnets.

Ive also seen one reverse its propellor in mid air....talka bout 4D!!!

It will be interesting to see how it goes after 10 then 100 flights...

SUBSCRIBE!

It appears to be the same ignition that adam uses from BCMA, the exl on my BCMA26, I dont want to hijack this thread from mwking, but I did have a different view to see

This engine has a domed shaped piston inside,does anyone know if the DA50 is the same?

As far as flying it goes:
I am planning to put it in a Chip Hyde cap-x. I ordered one from him and he said that he would ship it out last Monday. He didn't, I think he is really sick or something. Anyway, I have canceled my order from chip and will order one from chiefaircraft.com this Monday. So it may be a month or so before I can get it in the air. If anyone gets it flying before then let me know how it works out. Of course, when I get it flying I will post my report.
Nmking09

Peak Model had one of these yesterday, and it was $370 with free shipping. Of course, .. today it is sold out

LOL ... I wanna see the SOB that handled flying that 4D reversed propeller !!! ...

Shows you how many lurkers there were out there just waiting for a report before they bought one. NMKing may have just made that company a bunch of money. Their reputation will determine whether or not it is long-lived. I'll continue to lurk as there are so many of these econo-gas companies putting out fantastic products. DL remains in 4th place, if no other reason than for lack of data.

Now... How can I get a cut?? If only I would have thought to charge them before I posted the review. Ah well, I still think that the true test of the quality of this engine will come after many many flights. Well, I’m off to go finish the break in, 1.5 more hours at 4k. I would recommend hearing protection for anyone wanting to follow the manufacturers break in method.

That sounds like crazy amount of "grinding wheel" going on there . . Does the DA50 need the same amount???

Extended amounts of break-in time on an engine with a cast-iron liner and ringed aluminim piston is usually only necessary with poor manufacturing tolerances, or unnecessarily tight piston/bore clearance.

I'm about to go out and run in two 100cc Yamaha racing Gokart engines. Two sessions of 10 minutes each and they are ready to race . . at 15,500 rpm.

DA recommends that "at least 2 to 4 gallons of petroleum oil / gas mix" "at 32:1 ratio" be run though the engine while flying with a "prop that allows peak RPM over 6,500" with the high needle set slightly rich. After this breakin, they recommend a high quality synthetic be used. They do NOT recommend running on the ground during break in .

Hey Bobkra would the DL50 be over the top for the ultra rc Giles ?
Ken

Well, I just hit the pay now button so how long can I expect untill my "Grinding Wheel" time starts? Mine will replace a 43 EI Fuji on a GP Ultimate 1.60... I see you started this thread 10 days ago so I know it took at least 10 Days for shipping... Larry

I'd love to see the combination in action, and would sure like to fly it. My Brison puts out 21lbs of thrust and the DL is advertised to put out 30lbs. The Brison gives me a 1.8:1 thrust to weight ratio on the Giles and it flies 3D VERY well. The DL would give you close to a 2.6:1 ratio. The highest ratio I've ever flown is on my DA50 equipped Hangar 9 260. Its ratio is 2.3:1 and is phoenominal. The only downside might be that you'd have to go with a 3 blade prop for ground clearance. I'd say go for it. You don't have to fly at full throttle (all the time). It would open up a lot more options down the road too.

I'm considerring one of these for my Bling. I have a DA in it now but I'd like to use it in an 87in Yak (Ultra RC) I'm building. The Bling is only 13.5lbs and would do just fine with only 30lbs of thrust. The Yak should come in around 15.5lbs.

You did, by saving the money up front

I just started reading this thread tonight. Wow a DA 50 for half the price. I been looking and studing about the DA 50 for a couple of days. All I read is good. The only negative is the price. I am thinking maybe with the tax return. Then I see this DL50 and think the Chinese do a pretty good job of coping. Maybe not as good as the DA itself but I could get 2 for the price of one. Then someone says they will probably do the new DA85 next. Then I am thinking wonder what this will do to DA. If there is no DA to do the R&D what will the Chinese have to copy. You know I would rather have the real DA around for the great stuff they will have in the future the a Chinese clone. I am going to do the DA even if I have to wait and save alittle longer. For those of you who don't see it the same way, this opion is not a judgement of you. I just like to hold onto as much good old USA as possible. It gets harder every day because we keep losing us companies.

just like to hold onto as much good old USA as possible. It gets harder every day because we keep losing us companies.

I wonder if every part of the DAs are made here in the US?

And I wonder which is the country that always underlined the benefits coming from the economic competition and free market....

One question for the ones that have the DL 50 alredy in their hands: how does the casting of the parts looks? And what about the overall appereance....

Bye.

Andrea

Unless you assure proper cooling and avoid overcharging the engine...

Bye.

Andrea

Meaningless comparison...

Bye.

Andrea

Their number is 520-722-0607. Call them direct and you can hear for yourself what their thoughts are on the subject.