Lemjim

What plug should I purchase for this engine?. Also proper gap?.

Jim

Ratchet

My Feedback: (1)

I assume you mean the GF50i engine from CRRC Pro ... if so, then get yourself an NGK BPMR6F and set the gap to 0.020

=R=

Lemjim

Thanks for the info.

Jim

jimcork1

My Feedback: (4)

I have not bee able to get my 50 started. It will pop when choked then choke open to start. It will start and run about 2 seconds then die. Has to be choked again to repeat the procedure and it will repeat.

Fuel is at the carb and will drain out of the inlet if I choke it too long. I have tried using a megatron starter and the engine will spin over but not start. I am thinking the ignition system is dropping out. I have been using a 4.8 NIMH 2000 ma battery pack. I am planning to switch to a 6 V pack. What are you using and do you have any starting issues. Jim

Ratchet

My Feedback: (1)

Hi Jim,

To me, it sounds like your throttle plate isn't open enough to start the engine. Do you still have the idle adjusting screw in the carb? Crank it down a bit and see if the butterfly is opening a bit. Also, check to ensure you have the needles set properly, 1 3/4 for the low speed needle, and 1 1/2 for the high.

DO NOT USE A 6 volt battery pack for the ignition, you will damage it. Stick to a 4.8 volt pack only.

Good luck ...

=R=

jimcork1

My Feedback: (4)

The idle screw is still in but backed out to not affect the throttle.

The needles are set and confirmed at 1 1/2 open. I tried 1 3/4 on the low and it made no difference.

I have also tried cranking with throttle at idle,, 2 clicks off idle and 1/3 throttle. I have confirmed the throttle will open at these settings.

I have also choked with my thumb to insure it was drawing fuel and it is.

I checked with supplier of engine and they have confirmed the Ignition is ok with 6 V.

The engine is also kicking back on my hand at times when cranking. Does yours do this.

The supplier is thinking the ignition pick up on the engine is malfunctioning. I just don't know. I really don't think it is fuel delivery as I have pulled the plug and seen it wet, and with my thumb over the carb I can draw fuel until it drips out of the intake.

What do you use for an on/off switch. I am using a flight pack on/off switch. Today I plan to try cranking with battery direct connect to the ignition. Jim

Lemjim

Went to the parts store and they had to special order me a couple, the R through them off course. Pick them up today.

Thanks again, JL

LANNYBOB

what plug should i tell them i need. should i omit the "R" and tell them bpm6f.

jedijody

My Feedback: (1)

The Champion plug # is RDJ7J, whether you use NGK or Champion make sure you use the resistor plug, with the R in the number.

Jody

jedijody

My Feedback: (1)

Jim, the problem is most likely your ignition module, I have seen this symptom several times and the module was always the problem.

Jody

jimcork1

My Feedback: (4)

You are correct. I returned the module under warranty and it has been running great since the new module installed.

The engine has met all expectations with the new module.

I am flying a 17# Big Hots I call the Phoenix due to rising from the water of Katrina. (the parts were cut to build the hots and in a box on the floor. The house flooded,, the box floated wet all the parts and they all molded. I sanded cloroxed some, and made some new parts, the plans were totally ruined but enough there to get a idea on how to build the bird.