jstanton

My Feedback: (14)

I just finished my CMP Glies-202 and I installed a Brillelli 25GT w/ei on it. The engine is still very new and not quite broken-in yet, but I had to fly her and see for myself if this engine was going to be a good fit for me. I am not into 3d fly-in, I only do the basic stunts and a lot of touch and goes. This little engine is going to be fine once she is totally broken-in. Here is a video of her first maiden flight.

http://media.putfile.com/Giles-202

pe reivers

The engine is a bit short of power, but she sounds quite right for your choice of flight. You will love gas flight after this, and the glow engines will gather dust and will refuse to turn over after a while.
And guess what, you will not care.

Magna

Hi Jim

What is the rpm that GT is pulling on 17x6?

Zippi

My Feedback: (10)

Hi Magna, Jim and I have the same engine and with the 17X6 prop it is turning about 8200 rpms. Jim has a lot more time on his engine and has flown his plane aready. My Giles 202 is on the way. May have to take a look into the EI that Scott at Brillelli will be gettin in that will pump the rpms up to about 8800.

2slow2matter

My Feedback: (1)

Yall need to mow!

Nice engine. I love mine

Magna

The jump from 8200 to 8800 on 17x6 should give another 1.5lbs thrust based on Preivers. It does seems to be a tad low on power. The flight seems to be on full throttle on all move, ya?

NM2K

My Feedback: (14)

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You were expecting a 3W?

Give it some time to run-in. But you knew that.

jstanton

My Feedback: (14)

At the beginning of the video the flight was mostly at full throttle, but she was running really rich. I landed the Giles and then we adjusted the carb to lean it out some on top end. From then on the flight went really well and she was at full throttle on most of the clip, but most of the flight was really at 1/2 to 3/4 throttle. We just didn't get that part of the flight on video, we were limited to the size of the memory of the camera. She well do a roll and loop at half throtte and a outside lood at 3/4 throttle. The engine only has 1 gallon of fuel run there her so far and she is getting stronger with each flight. Right now I am getting 8300RPM with a APC 17x6 prop and I am really happy with the way the Giles is running with the Brillelli 25GT w/ei.

Zippi

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Is there any new info from Scott about the other EI that he is getting that will boost the rpms up?

jstanton

My Feedback: (14)

Not yet. He is getting in a Sycro pack that works with the EI. This sycro pack is what helps the RPM to increase. I'll ask Scott today to see if he has an ETA on when they will be in.

NM2K

My Feedback: (14)

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There is no advantage to running a gas engine really rich. They do not benefit in the same way as a glow engine. Don't know if you knew this or not.

Peak her out and then back off about 200 rpm.

Antique

My Feedback: (4)

Just so you know...Syncro spark is a very good thing but is not magic..An engine timed at 28 or 30 BTDC will run the same with or without syncro spark...Full advance with syncro spark occurs at 4000 rpm....The advantage of syncro spark is retarded timing for starting with no kickback...
And if your carb low needle is set too rich the engine will bog on transition, as spark advance depends on the speed of the crank..The engine accelerates slower when too rich and the spark advance doesn't compensate...

tkg

My Feedback: (1)

Ralphs right again

Magna

Hi Jim

Somehow comparing the video of your 25GT mag in the giant stik vs the CMP Giles on 25GT EI, its seems that the Stik have a lot more climbing power.

Do you feel that too? I believe the 25GT mag have more power as per what Scott said due to the EI module thingy?

Scott Ellingson

My Feedback: (146)

I can not for the life of me figure out why the EI 25 has less than the mag 25. I ran a mag 25 tonight and a EI 25. The mag engine was 200 rpm higher. That has been what I am seeing on all of them. Maybe TKG has an idea. The reason I think Syncro Spark may help is I will be able to advance the timing more and still get a good start without kickback. I do know the magneto changes the timing by 10 deg from idle to full rpm. The timing at full rpm is about 32 geg BTDC and about 22 at idle. I have not set one up on EI with that much advance yet. I do think it will kick back without syncro spark. I will do it soon if I can ever catch up on engines. Only 18 to build now

jstanton

My Feedback: (14)

Magna

You are right the 25GT with mag has more power that the 25 w/ei. I know Scott will figure out why and I will be do what he comes up with. Right now the 25 w/ei has 8300RPM with an APC 17x6 prop and fly's the Giles-202 very nicely for a stunt plane. I know when this engine can do 8800RPM like the 25GT with mag it is going to be a great flyer.

I will have more video tomorrow. I have made the changes that Scott suggested to the carb to get the engine to idle right inside the cowl. The engine is getting a little stronger with each flight now and I am really interested in seeing how she runs with this mode.

Zippi

My Feedback: (10)

Jim, once you get your engine tweaked out let me know just where your high and low settings are. That will give me a ball park figure to look for. Kinda wish I'd known about the big rpm difference between the Mag and the EI before I got mine. I may have got the mag and saved $100.00. I kinda based my purchase on the video of your Giant stick with the 25cc GT Mag. There is a big difference between the flight of your Giant stick and the Giles 202 as far as power and flight characteristics. I am not knocking the engine here, I really like my 25cc GT EI. I just am beginning to think it may have been more suited for another style of plane with a little less weight.

jstanton

My Feedback: (14)

Zippi

I understand what you are saying about the difference between to two engines, but the more I run the 25GT w/ei each time it is a little stronger. With the engine hitting 8400RPM now it is flying much better and the one with the mag would have been to heavy.

I did find the landing gear to be weak like Tconnel said and for now I am using a fiberglass repair kit to fix the landing gear. I will be ordering the landing gear he used I think in the long run. I thought you might like to know when you put your together. May neighbor says a fiberglass repair kit would help to strengthen the landing gear and I am trying that for the moment.

Zippi

My Feedback: (10)

If you are referring to the Cap X landing gear it looks like a good buy for $20.00. I might get that gear myself.

Scott Ellingson

My Feedback: (146)

Jim,

I have come to a cunclusion on the power of the 25 on mag and EI. I ran 2 today, one mag and one EI. Both ran the same RPM. I set the timing at 28-30 like usual. All of the engines I have done from the last batch I got are lower than some of the previous batches. I believe this is due to the tightness of the engines. They are all very tight and I believe in the end they will do the same power as your mag engine doing 8800 rpm on the 17x6. Full break in will take 5 gallons or more. I also ran 2 46cc engines recently. One was a new one I did to sell, the other was a well used one I did for another person. The used one spun a 22x8 APC at over 7200 RPM, while the new one did it at 6850. That is a huge difference for otherwise exact engines. The only differencs was the one that turned higher was broken in. You are picking up RPM's all the time the more you run it. I believe your first mag engine was just a little looser to start out and picked up RPM quicker and started out higher. I believe your EI engine will meet the mag engine in power eventually. It just needs more break in. Have patients, give it time, and run the crap out of it Terry from CH said it the best. People who are used to glow think a couple tanks is all it takes to run in an engine like an OS, but a gas engine will fully break in if you have it long enough to run 5 gallons through it. I have another guy in Colorado. He flies at 5500 feet. He has put more than a couple gallons through his engine. It is still picking up power. These engines may not beat an MVVS for power, but an MVVS will never come even close in price.

Scott

Scott Ellingson

My Feedback: (146)

Zippi,

Just wanted to show you a pic of what a typical 25GT looks like inside when I tear thm down to do them. They are brand new as you can see. The rings are even black, not shiney. If I used a recon engine, then they would be more powerful out of the box, but then again, they wouldn't be new Keep me posted on how you are doing with yours. If you have the time, run a few gallons through it on the stand.

flyboy1299

My Feedback: (7)

Hey Artisan, I was just looking for someone who was on line and found you. A member has asked me to look at his ad in the marketplace and all he gave me was the ad number, 188326. Do you know how to find this ad with only the ad #? I'm on line and waiting to see if you can answer. Thanks, flyboy1299

ScottK

My Feedback: (9)

Isn't the video showing the one thing that you should not be doing with a brand new gas engine...

...running it at full throttle for more than a couple of seconds at a time?

karolh

Don't make the common mistake and believe most everything you hear or read

Karol

jstanton

My Feedback: (14)

Scott,

This is really good to hear. I am really liking the way the engine is getting better with each flight. Right now I am at 8400RPM and the Giles is flying really well. I had a mishap with the landing gear and she is in the shop getting that fixed. i will be flying her again this week if weather holds out. We have rain coming again. I'll have the another video ready for posting with the next flight.