CRRC Pro GF26I

[babsvdmerwe]

hi joseae, check under the ignition pick up to see if no dirt has built up and the battery voltage must be high, i am also using a 6v batt with regulater and seems to be working fine.
Andre

[zool.on]

Use caution if going to a 6V pack. If you have stock CRRC CDI I think it is ok. I got my CRRC 26 and 45 with the RCEXL CDI and was told not to use a 6 volt pack on it.

[2robinhood]

It seem that everyone is using regulators with 6v packs.
I actually ran a 6v unregulated on my stock auto advanced CRRC ignition.
My second 26cc, I ran a 4.8v 2500mah battery and had no issues, but the 1st one needed the 6v pack.
It just seems that issues come up when a battery starts to get around 4.8V-4.9v.
A 6V battery on a regulator can stay above 5.2 - 5.5 volts for a long time.
A 4.8v pack starts draining from the 5.2v - 5.5v as soon as it is turned on.
I know I had to keep mine above 5v to run cleanly.
You could tell when it was low on voltage, it would become hard starting and pick-up a miss in higher rpm's.

[edwal07]

	Quote: Originally Posted by 2robinhood
	It seem that everyone is using regulators with 6v packs. I actually ran a 6v unregulated on my stock auto advanced CRRC ignition. My second 26cc, I ran a 4.8v 2500mah battery and had no issues, but the 1st one needed the 6v pack. I just seems that issues come up when a battery starts to get around 4.8V. A 6V battery on a regulator can stay at 5.2 - 5.5 volts for a long time. A 4.8v pack starts draining from the 5.2v - 5.5v as soon as it is turned on. I know I had to keep mine above 5v to run cleanly. You could tell when it was low on voltage, it would become hard starting and pick-up a miss in higher rpm's.

That's what I was talking about in my last post about using the 6v with a regulator. I have seen 2 or 3 engines where guys were complaining about a high end miss at wot, like a popping, but everything was set and nothing adjusted after a good flight.
I found that they will hit but not start below 4.9 volts, or start and then quit in the middle of a flight. That is why I went to 6v and a regulator. I am using Spectrum in my planes and am going to 7.2v LiPos with regulators, one to make sure I have no problems with the Spectrum Receivers and to end the engine problems due to low voltage. I have not had any problems as I check voltage prior to each flight and charge the ignition battery after every 3rd flight.
You are correct as the voltage on a 4.8 starts about 5.34-5.39 on a fully charged battery and goes down hill from there, the ignition draws about 700ma at wot so it does not take long to drop, even if you are using a 2000-25000ma battery.
I think 7.2 Lipos or 6v packs with a regulator is the best way to go.

[joseae]

I think what you guys have said kind of makes sense since lately I can get my engine to start with the 4.8v pack but after the first run it becomes almost impossible to start with the same pack. There has been a couple of times when in the middle of struggling to start the engine I have temporarily switched to my receiver's 6v pack and the engine starts right away. Now the question is, how come this was not happening before? I have been using the same 4.8v pack from the beginning and was able to fly 4 or more times with no issues. I tested my battery pack and at least, as voltage is concerned, it seems to be OK. So, in conclusion (???), something must have changed here, either the battery pack's capacity has diminished or the ignition has become more demanding. I know it does not make sense, but that is all I can conclude from all this. Could it be a matter of amps and not volts? My next step will be to try a higher capacity (mAh) 4.8v pack and if that does not work then get me a 6v pack with a regulator. What kind of regulator are you guys using?

[3Dguy]

Mines running fine on a 2500mAh 4.8v pack.

[2robinhood]

My 1st 26cc needed 6v packs, and I ran them unregulated.

My 2nd 26cc I ran 4.8v 2500mah pack and never had an issue.

[rcign]

Ah, progress..
for 20 years we had igintions that ran for 2 hours on a 600ma 4.8V battery...NO problems, they just worked..
Now we have Lipos, hydrides, A123s etc....
Special chargers, regulators etc....
Ignitions with leds, cutoff features, automatic chokes, etc.....
When you people get tired of screwing around with all these high dollar special ignitions and want something the works all the time, takes no special chargers, and is relatively cheap, you know where to find them....AND they're guaranteed...RC ignition.com and C&H...We both have been around for over 20 years, longer than some of you "newbies" have been flying....We started with mechanical advance ignition, later when the technology came about, had electronic control...You need NOTHING else in an ignition..
Something to be said for the K I S S principle...

[3Dguy]

Should I be ashamed of my youth?!

[joseae]

	Quote: Originally Posted by 2robinhood
	My 1st 26cc needed 6v packs, and I ran them unregulated. My 2nd 26cc I ran 4.8v 2500mah pack and never had an issue.

Why you talk about them in past tense? What happened? Did you try to run the first one on 4.8 volts? This is driving me nuts. I just tried a different 4.8v and it will fire up a few turns and stop. As soon as I replace it with a 6v it runs more or less normally. Now what could be happening? Is the ignition going bad? Should I buy a new ignition or just a 6v pack?

[ken crane]

he has out grown our little planes lol hes a giant guy now !

[ken crane]

	Quote: Originally Posted by rcign
	Ah, progress.. for 20 years we had igintions that ran for 2 hours on a 600ma 4.8V battery...NO problems, they just worked.. Now we have Lipos, hydrides, A123s etc.... Special chargers, regulators etc.... Ignitions with leds, cutoff features, automatic chokes, etc..... When you people get tired of screwing around with all these high dollar special ignitions and want something the works all the time, takes no special chargers, and is relatively cheap, you know where to find them....AND they're guaranteed...RC ignition.com and C&H...We both have been around for over 20 years, longer than some of you "newbies" have been flying....We started with mechanical advance ignition, later when the technology came about, had electronic control...You need NOTHING else in an ignition.. Something to be said for the K I S S principle...

this guy cracks me up ! at first i thought him as arrogant and chalenged him,then i started to watch and learn from his posts then i came to realize the guy is a smart sob. hes right in 99.9 percent of his comments. learn from his years of exp. i dumped all the lipos regs ect and went back to the simple kiss theory. addeed 2 batteries 2 switches and left all the advances to the others and i am much happier and more money in my pocket to buy fuel. thanks rci! btw the rci ignition on my crrc 50 works just fine !!!