CRRC Pro GF26I

[3Dguy]

Sorry about the old engine, and congrats on the new one! Man, Ray's even goinng to break it in for you? Sweet.

Mine has a gasket. Since airflow is my next culprit, I will run the engine without a velocity stack to see if that solves anything. It's really down to trial and error now. I looked it over, and the carb/engine is fine.

[MTS247]

What NGK plug have you all been using NGK CMR7H?

[3Dguy]

I have.

[2robinhood]

I have been using the NGK CMR7A.
I bought them on E-bay, 10 pack @ the door for about $15.00

NGK codes:

C = 10mm thread
M = compact plug
R = resistor plug
7 = heat range
H = half thread............... A = special design

[MTS247]

Cool thanks

Iv had to replace the hall sensor and im not sure where to set the timing iv got it in the centre, what timing positions do what? how can i improve transition from idle to full noise? improve idle?

[TrikeFlyer]

Locate top dead center and mark your prop hub. Put degree wheel on where prop goes. Line up 0 degrees with TDC, then rotate counter clock wise and mark both 28, 30 and 32 degrees on prop hub.

(if you don't have a degree wheel go to Walgreens or Office Depot and buy a cheap protractor)

Now hook up your ignition system with switch and battery with the spark plug out of the engine. Make sure spark plug is grounded to the metal shield.

Now slowly rotate the engine counter clockwise and when you hear the spark snap look at the pointer and your timing marks to see how many degrees BTC (before top dead center) the ignition is firing. rotate the hall sensor until the ignition fires at 28 or 30 degrees BTC and lock down screws.

NOTE: the hall effect sensor must have the white printing facing the magnet to work if you are going to replace a hall efect sensor.

This is all a very simple proceeduer. HAVE FUN!!!

Trike.

[2robinhood]

FLZman , have you received your engine yet?

[FLZman]

	Quote: Originally Posted by 2robinhood
	FLZman , have you received your engine yet?

I was just about to post . Yes I got my new motor from Ray on friday and had a blast with it over weekend. I can't say enough about Ray, not only did he feel bad for my experiences with first one bought from somewhere else, he gave me a substantial discount for my problems even though he had nothing to do with original sale. He also took the time and gave the engine a good 1 hour or so test run before shipping it out just to make sure it was right. I bolted in on and the plane saw more flying time than it has for last 4 four weekends.....lol. Lessons learned and Ray stepped up to plate.

Oh, also I sent Ray the seized up engine and he is going to fix it up. Now I wil have an engine in need of a home..........hmmmm


Z

[joseae]

Has anyone experienced a high pitch noise coming from the front of this engine. It comes as the engine warms up and is more noticeable at idle. Sometimes it varies in pitch. I have 4 flights on my Yak 54/CRRC 26, it seems to be running very rich, 4 stroke style. After sliding the sensor to the right that seemed to improve, but the high pitch noise is getting worse. I noticed it gets quite loud and then the engine dies. Could this be metal to metal? Or maybe ball bearings? Maybe this is part of the problem of not being able to idle below 2200 rpm. I am also still having issues with rc interference affecting mainly the throttle servo, but that I can take care of. Any suggestions? (other than contacting CRRC). I have been using a Xoar 17/6, 40:1 gas mix and a 1200 mA nickel metal for ignition.

[Doublesixes]

Be careful of that noise. My 26cc was making some weird noise similar to what you describe and finally quit in midair. Nobody could get it to run reliably again. I'm negotiating with CRRC China to see if they can replace the engine but i"m rather skeptical at this point.

[3Dguy]

Bearings?

[joseae]

	Quote: Originally Posted by Doublesixes
	Be careful of that noise. My 26cc was making some weird noise similar to what you describe and finally quit in midair. Nobody could get it to run reliably again. I'm negotiating with CRRC China to see if they can replace the engine but i"m rather skeptical at this point.

Who did you buy it from?