jstanton

My Feedback: (14)

Has anyone had any experience with the newer NGH GT17? I know the first release had issues but they have a newer version that address these issues. I would like to know if they figured out what was wrong and got this engine running right. It is sold by Agape RC on Virgina. This is the right size engine I have been looking for my Seagull Cap 232.

earlwb

I think the problem was the connecting rod. I have known of a couple of cases where the rod failed. Agape did fix the rod on one guy;s engine when it happened. The rod is bushed so you need to use a 20:1 fuel to oil ratio for break in and after it is run in really good, maybe 25:1 fuel to oil ratio. The other thing is that you need to use a really good quality synthetic oil, not the inexpensive stuff. I like to use Stihl HP Ultra oil in my engine. But Red Line or equivalent would work too. You need to use oil for air cooled engines. My 17cc NGH engine has been running really good for me, no problems actually with it in my case. I cannot tell you which version it is either, but it works. In my case I have it on a World Super Stunts .60 plane, but it doesn't need full throttle much though, as it can putt around slowly. The power output is quite good and I am very satisfied with the engine.

jstanton

My Feedback: (14)

Earl,

Thanks for the nice reply and it is good to hear you are pleased with your NGH GT17. I have a 4 year old ASP 91 glow die on me last weekend and it was in my Seagull Cap 232. I wanted to replace this engine with a gas engine but wanted one that would fit inside and cowl without having to tear it up so much. The DLE-20 was not an option for that reason. I found this engine and wanted to know how it has been working for those who have it. This engine will fit inside my cowl just like my ASP 91 did. I will just open up the air intake slots so there will be plenty of air going around the head if the engine. Here is a pic of my Cap 232. Thanks again

jstanton

My Feedback: (14)

Just got the NGH GT17 in today and it looks like a great little engine. I hope to get it installed on my Seagull Cap232 this week and flying it this weekend. Here is everythin that came in the box. As you can see the carb has a thicker manifold gastket to help keep the engine heat away from the barb. I really like the new ignition that is made a RCEL. It will take a higher voltage battery pack so I can use my 2 cell life batteries with fear of them damaging the ignition.

SeaJay

My Feedback: (6)

I Will keep an eye on this forum, as I have a Goldberg Tiger .90 that could use a new engine, and this might just fit the bill.. I look forward to your future flight and performance reports!

Craig.

earlwb

Yes that newer version ignition module is a big improvement. My engine came with the older module that used 5v with 6.0v being the maximum input voltage. I use a Lipo with a voltage regulator on mine.

captinjohn

jstanton, did you have a Giles 202 a few years back? That new 17cc engine you have now looks real nice. What brand of spark plug do they provide with the engine?

earlwb

I think the spark plug is a no name brand as the one that came with my engine had no markings on it.
But RCexl very likely makes them.

jstanton

My Feedback: (14)

As Earl said the spark plug is a no name but since it comes with a RCXEL ignition it is more than like;y made by RCXEL. I dID HAVE A Giles 202 a few years ago but I sold it to a friend who sent it to the fly gods in the sky. i HABE THIS ncg gt17 MOUNTED TO MY Seagull Cap 232 and it mounted right to the holes I had drilled for the Old ASP 91 I took out. This engine is a little longer than the ASP so the prop spinner sticks out a lillte more thanb it did with the ASP 91. The plane balance perfectly with this engine with no added weight anywhere. Here are oa few pics on the installation.

jstanton

My Feedback: (14)

I just got around to breaking in the NGH GT17. I have it mounted to my Seagull Cap 232 using a 2000mah life4 battery for the ignition. I have 1 gallon of 93 octane fuel with 25 to 1 Stilh synthic oil. I have a Evolution 14x6 prop. I choked the engine and it started up easy with my electric starter. I did 3 -10 min runs and the engine got better after each run. After the 3rd run I had a good 1900 rpm idle and I hit 8900rpm at full throttle for just a few seconds. I hope to do the maiden flight this coming Saturday and I will change the prop out to a APC 15x6 if I can find one at my LHS.

WindGap

My Feedback: (3)

Keep us updated as to the progress.

captinjohn

Yes, please give us a update on the NGH 17cc engine when you get it in your airplane!

CustomPC

I had an NGH 17cc when they first came out.

I had some issues with it from the beginning and the factory sent me the carb spacer which improved things somewhat but i eventually got tired of how inconsistent it was and removed it from the plane.

I'm now using an OS GT15 gas engine in the same sized planes and that is the best engine i have ever owned when i consider things such as ease of starting, consistent running and ease of tuning. The OS is more expensive but the lack of fuss adds up to more enjoyment and more flights which for me is exactly what i'm looking for.

jstanton

My Feedback: (14)

CustomPC,

I started this post for the reason you say you stopped using you version 1 NGH GT17. The new Version 2 NGH GT 17 has more that just the carb spacer. It has the newer NGH ignition that is a high voltage ignition that will use up to 8.4 volts. I am using a Life4 6.6 battery on mine and so far it has been a good running engine. I have had many gas engines and all of them have been the larger size 35cc to 60cc. This is my first gas engine in the smaller size and I wanted to see how well they perform. I have a friend that has the little 10cc Evolution gasser and it runs pretty good. I'll give a flight report this weekend. Thanks for you input and I know you'll have a great time with your OS 15.

earlwb

I think it is critical to use a really good oil in the fuel. A really good synthetic oil for air cooled engines. Do not use the inexpensive oils. I currently use Stihl HP Ultra. Red Line and some others would work too. Earlier I used Amsoil Saber oil, but it was leaving more carbon deposits than I liked to see. Also use 20:1 fuel to oil ratio maybe a little more for initial break in. The connecting rod needs all the oil it can get and it may be a little too tight initially as well. Don't try to go with the lean oil mixtures as the engine cannot handle lower oil ratios. The bushed rod is the weak link and will fail with lower oil ratios.

The Evolution engines work really well, plus they have needle bearings on the connecting rod too. Evo tested their engines much more rigorously than NGH did. OS of course did the same too. The Evolution 10cc gas engine is pretty awesome, it develops a lot more power than the NGH 9cc engine does.

CustomPC

I was running The Red Line @ 25:1 in mine when i damaged the piston and sleeve, probably due to my own tuning error.
Fortunately parts were cheap and i got replacement parts.

I subsequently ran some Shell racing oil which worked ok. I remember it was very high viscocity stuff.

The Stihl ultra has only been available here in Australia for a couple of months. I have a bottle now and i'm itching to try it. My fuel can is currently holding 30:1 of Stihl HP mineral oil for break-in on both my OS and new Stihl whipper snipper. When that fuel is all used up i'll be using the Ultra.

jstanton

My Feedback: (14)

Sorry guys no flight report this weekend on my NGH GT17. We had winds in the 20 to 30 mph range and I did not want to resist it. I do not like flying my RC planes in the kind on condition. I did do some more testing and the engine starts really easy now by hand. I did not find a 15x6 prop to try so I put on a APC 14x8 prop and I get 8700RPM with it now. I will have to wait for this weekend to try again. I will try the Stihl Ultra oil when I am done with this gallon I have of synthetic 25 to 1 oil.

earlwb

In my case, I was getting around 9,150 RPMs using a Master Airscrew 14x8 black plastic propeller. The 1,800 RPMs idle speed wasn't bad either. yeah we have had nuclear winds out here too. They had wind advisories up over the weekend and today even. 45mph gusts without the thunderstorms.

prigai

Where did you find the Ultra HP? I thought I've checked everywhere...

CustomPC

It's only been "on the shelves" here for a couple of months. Your Stihl dealer should have it by now or you can ask them to order it in.

If you can't get it i can pick one up and post it to you at cost.

prigai

Thanks mate, very kind offer. I will try Stihl first, maybe they finally realised there's a popular demand for the stuff...

jstanton

My Feedback: (14)

Just left the LHS and they finally got in a Xoar 15x6 prop. I picked one up and will install it tonight when I get home. I hope it will spin in the 8500 range. That shold give me the pull I am hoping for from this little engine. I am not really sure about the power it is putting out. It seems a little less than my old ASP 91 but we'll find out this weekend.

jstanton

My Feedback: (14)

I installed the Xoar 15x6 prop last night and did another test run on the engine this morning. All I can say is WOW this prop rocks on the NGH GT17. I am getting a very good idle at 1900rpm and I got 8700RPM on the high end. I think this Xoar 15x6 prop is the one to use on this engine. I hope to get a flight this Friday if the weather holds.

jstanton

My Feedback: (14)

Well the weather was really good this morning and I could not wait any longer to try this NCH GT17 engine. It is a great running little engine but does not produce the power of a 91 glow engine. My Cap 232 is a 90 glow size plane and the engine flew the Cap OK but not like the Old ASP91 had. Easy starts and a great idle is what thie little engine has. It does get 9000RPM on a Xoar 15x6 prop and that is more than enough for a 60 size plane. I just my move this engine into my Great planes 60 size P-47 of maybe even built me a 4 sart 60 for this engine. I do like the way this engine is designed and I think I am going to get the NGH GT25 for my Cap 232. That engine should do the job. Sorry no flight video

CustomPC

A 2-stroke Gas engine will never be as powerful as a the same sized glow engine.

Their power and torque is closer to the same sized 4-stroke glow engine and my own experience with this engine and the OS GT15 is that propeller rpms are roughtly the same as my old FS .91 II Surpass engine.

Any model which flies well with a an OS .75AX 2-stroke or a .91 4-stroke will be an ideal home for the 15-17cc gas engines.