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HelicopterGasser Model RC HelicoptersOther › OS GT15HZ in a JR Ergo 60
06-01-2013 12:47 AM  4 years agoPost 1
balsabasher

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Central Ohio, USA

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OK, I decided to go the beta tester route and try this combo. Just received the engine today and took pictures comparing it to a OS 70SZ-H. Will be placing it into an used but large sweetheart of a JR Ergo 60 heli. If it works out, I will add a JR Schweizer 300 kit that I have laying around.

What came in the box. Tuned muffler with bolts, gasket, and exhaust deflector. Engine with throttle/choke arms, ignition module, and spark plug. Plug looks like the DLE branded one.

GT15 compared to the 70SZ.

Showing the Ergo 60 fan and duct on the GT15. Will need the duct modded to provide clearance around the choke shaft and carb mixture adjustment screws. May build an extentsion on the duct for more air flow guidance.

BTW, the test subject!

Blades; what goes around, comes around!

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06-02-2013 12:43 AM  4 years agoPost 2
balsabasher

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Central Ohio, USA

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Basic engine fits the frame like a glove.

Easy mod to fan duct to fit engine.

Also, I found that JR had the pinion and main gear needed for this project. Sport flying @ 1600-1800 head speed. I got lucky and had the gears in my old school stock.

Blades; what goes around, comes around!

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06-02-2013 12:47 AM  4 years agoPost 3
shihan

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Oneida, N.Y.

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very cool, great combo.....

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06-02-2013 12:58 AM  4 years agoPost 4
balsabasher

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Central Ohio, USA

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This project is off to a great start!!
I have a Z230 with the G-23 engine. This will alow me to compare the two helis. But I can see now that the GT15 heli (Let's name it Z150!) will be about 2# lighter and have a third more HP plus able to have a higher head speed. This should make for some good Sport Flying.

Blades; what goes around, comes around!

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06-03-2013 04:40 AM  4 years agoPost 5
balsabasher

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Central Ohio, USA

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Ok, I hit the first bump. Found that I will have to grind away some of the lower frame on both sides so I can install the lower muffler mounting bolt and nut. May have to add some reinforcement to the lower frame. Also found some bad bearings on the heli and I am going through the heli to refresh any other problem areas.

Btw, found that the GT15 will fit in a JR Vigor frame better than the Ergo frame. The Vigor fan duct will require more work though.

Picked the Ergo frame for a sport scale project. If I like the performance of the GT15 engine, I will consider building a gas sport FBL Vigor CS.

Blades; what goes around, comes around!

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06-10-2013 03:45 AM  4 years agoPost 6
balsabasher

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Central Ohio, USA

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Project was delayed while I was out of town.

Hit one more bump. Had to shorten the fan hub. The clutch shoe was binding on the top of the clutch bell. All done and back on track. Also found old school purple bling and metal upgrades in parts pile. So you guessed it! Installing bling while going through heli and bearings. Hope to test fly in the next couple of days.

Blades; what goes around, comes around!

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06-12-2013 04:54 AM  4 years agoPost 7
balsabasher

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Central Ohio, USA

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One more thing needed to be done, lenghten the throttle linkage. Also sub a NGK plug in place of the factory supplied one. Btw, no spark plug gap is listed for this engine so I set mine at .021.
Took it out for a test flight today. Needed to lean the high speed needle a slight bit from the factory setting.

WOW,I am liking this engine so far. Not even broke in and it is better than my Z230. Heli is lighter, more powerful, less vibration, and better throttle response. This is a great sport engine! Feels more like a 2 stroke gas model engine and less like a weed-wacker engine. If it proves reliable, I am sold.

I like it enough that I am moving forward with the S-300 conversion. Pictures at the end of today's test flight.

Blades; what goes around, comes around!

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06-19-2013 05:01 PM  4 years agoPost 8
balsabasher

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Central Ohio, USA

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I am still enjoying this engine. It is still breaking in but I noticed an increase in power. This is a good sport engine. I would not spank it for 3D duty. There are better motors and engines for that.
Here the heli is with the S-300 conversion installed. This is a large heli!

Blades; what goes around, comes around!

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06-19-2013 08:45 PM  4 years agoPost 9
RM3

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Killeen, Texas - USA

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thats neat...clean too. keep an eye on those temps and listen to the engine, if you start getting increasing amounts of bogging sounds, land it and check the temps, adjust needles and have at it.
Hopefully it lasts...as it very well should given your flying style in that model.

have fun!

showing a preference will only get you into trouble, 90% of everything is crap...

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HelicopterGasser Model RC HelicoptersOther › OS GT15HZ in a JR Ergo 60
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