CRRCPro/CRRCPro-USA On The 45cc
Hi Guys:
I have read with interest the various postings on the CRRCPro 45cc engine. I decided to get one since so many before me have worked out so many problems.
I just decided to move into gas after 60 years of modeling and 30 plus in RC, but always glow.
At any rate I ordered a engine from Hobby-People. They list as the "THOR", it has CRRC stamped all over the crankcase and the cylinder powder coating is black. It must be OEM'ed for Global for the USA market and for Ripmax for the UK, at least that is the way it appears to me. The instruction sheet seems to be from the UK since fuel is referenced as "petrol". We also have CRRCPro-USA and CRRC-China in this picture. As I said not sure how all of these relationships work, maybe someone will enlighten me.
Anyway I received the engine from Hobby-People in timely fashion. I have documented my journey with pics so everyone interested could share my experience.
With all the posts about QC , etc I decided to pull the engine apart to check the inside. Re-assemble and test.
1. The engine was well packaged and exterior appearance was very good.
2. Interior inspection disclosed some substance in the top of the cylinder and on top of the piston in the "squish" zone. Don't know what it was. Black and soft, almost looked like lapping compound but it was not gritty, felt like wax. Cleaned it all out. Rest of the engine appeared clean but dry. No residual oils. Squirted the entire interior with Marvel Mystery Oil and re-assembled.
3. Drilled and balanced a Zinger 20X8 and mounted. No problems.
4. Mounted the engine to a test stand and mounted the ignition module to the right side of the stand. The CDI is in a plastic case no markings on it except "THOR".
I did a test of the ignition with the plug connected but not inserted into the engine. Nice fat hot spark. No sign (sound) of internal discharge inside the CDI that I believe "hardtop531" in Australia experienced. Excuse me if I have referenced the wrong guy, there have been so many postings I may have him mixed up in my feeble old 73 year old mind.
5. Filled the 24oz tank with 89 octane mixed 25:1 with Pennzoil Multi-Purpose 2-cycle oil. I know, not synthetic, I said I was 73 !
6. Throttle full open, choke full closed, ignition "OFF". Eight flips to to prime. Reverse above settings , heavy glove, and flip 1, 2, 3, 4-ROAR. Flawless start idling at 2850-RPM. No kickback at all. Warmed it up at idle for about 2 mintes- throttle advanced about half way for 4500-RPM range. Very smooth transition and acceleration. Next 12 minutes spent on the same type actions. Ran the tank out at about 17 minutes.
7. Turned everthing off for a rest session (including the driver for coffee).
8. Two cups of coffee later, did I mention I am a old USN Submarine sailor ? No coffee no workee !
9. Re-filled the tank, backed the idle screw out about 30 degrees.
Primed the engine with 4 flips.
Ignition, glove, flip- 1, 2, 3-ROAR. Now where is the challenge in that ? All subsequent runs have been the same, EXCELLENT, no kickbacks and very easy starts.
10. Engine settled into a very smooth idle at 1560-RPM. More time (about 6 mintes) and I wanted to see what was on top.
I found there was 6975-RPM with the Zinger 20X8 at the top. Very impressive with less than 30 minutes on the clock. Only time will tell on the CDI but it hasn't missed a beat so far.
Anyway, long story short. Thanks to "Tooly" in Israel, "hardtop531" in Auatralia, "Jim" at CRRCPro-USA and CRRC-China and all others that came before me to assist in the improvments from a stinker at first to what I consider to be a very good engine. I have about 2 hours on the clock now and showing steady improvement. Top end with same parameters is currently 7100-RPM. I have not flown it yet but I feel confident enough to put it in my new 27% Extra 330L.
My experience has suggested to me that I would always open these engines up for internal inspection before even turning it over by hand. I am sure the manufacturer will address the QC issues since it is only to their advantage.
I will be happy to respond to any questions.
E T (just "E T" to everyone)
Milton, WI
I have read with interest the various postings on the CRRCPro 45cc engine. I decided to get one since so many before me have worked out so many problems.
I just decided to move into gas after 60 years of modeling and 30 plus in RC, but always glow.
At any rate I ordered a engine from Hobby-People. They list as the "THOR", it has CRRC stamped all over the crankcase and the cylinder powder coating is black. It must be OEM'ed for Global for the USA market and for Ripmax for the UK, at least that is the way it appears to me. The instruction sheet seems to be from the UK since fuel is referenced as "petrol". We also have CRRCPro-USA and CRRC-China in this picture. As I said not sure how all of these relationships work, maybe someone will enlighten me.
Anyway I received the engine from Hobby-People in timely fashion. I have documented my journey with pics so everyone interested could share my experience.
With all the posts about QC , etc I decided to pull the engine apart to check the inside. Re-assemble and test.
1. The engine was well packaged and exterior appearance was very good.
2. Interior inspection disclosed some substance in the top of the cylinder and on top of the piston in the "squish" zone. Don't know what it was. Black and soft, almost looked like lapping compound but it was not gritty, felt like wax. Cleaned it all out. Rest of the engine appeared clean but dry. No residual oils. Squirted the entire interior with Marvel Mystery Oil and re-assembled.
3. Drilled and balanced a Zinger 20X8 and mounted. No problems.
4. Mounted the engine to a test stand and mounted the ignition module to the right side of the stand. The CDI is in a plastic case no markings on it except "THOR".
I did a test of the ignition with the plug connected but not inserted into the engine. Nice fat hot spark. No sign (sound) of internal discharge inside the CDI that I believe "hardtop531" in Australia experienced. Excuse me if I have referenced the wrong guy, there have been so many postings I may have him mixed up in my feeble old 73 year old mind.
5. Filled the 24oz tank with 89 octane mixed 25:1 with Pennzoil Multi-Purpose 2-cycle oil. I know, not synthetic, I said I was 73 !
6. Throttle full open, choke full closed, ignition "OFF". Eight flips to to prime. Reverse above settings , heavy glove, and flip 1, 2, 3, 4-ROAR. Flawless start idling at 2850-RPM. No kickback at all. Warmed it up at idle for about 2 mintes- throttle advanced about half way for 4500-RPM range. Very smooth transition and acceleration. Next 12 minutes spent on the same type actions. Ran the tank out at about 17 minutes.
7. Turned everthing off for a rest session (including the driver for coffee).
8. Two cups of coffee later, did I mention I am a old USN Submarine sailor ? No coffee no workee !
9. Re-filled the tank, backed the idle screw out about 30 degrees.
Primed the engine with 4 flips.
Ignition, glove, flip- 1, 2, 3-ROAR. Now where is the challenge in that ? All subsequent runs have been the same, EXCELLENT, no kickbacks and very easy starts.
10. Engine settled into a very smooth idle at 1560-RPM. More time (about 6 mintes) and I wanted to see what was on top.
I found there was 6975-RPM with the Zinger 20X8 at the top. Very impressive with less than 30 minutes on the clock. Only time will tell on the CDI but it hasn't missed a beat so far.
Anyway, long story short. Thanks to "Tooly" in Israel, "hardtop531" in Auatralia, "Jim" at CRRCPro-USA and CRRC-China and all others that came before me to assist in the improvments from a stinker at first to what I consider to be a very good engine. I have about 2 hours on the clock now and showing steady improvement. Top end with same parameters is currently 7100-RPM. I have not flown it yet but I feel confident enough to put it in my new 27% Extra 330L.
My experience has suggested to me that I would always open these engines up for internal inspection before even turning it over by hand. I am sure the manufacturer will address the QC issues since it is only to their advantage.
I will be happy to respond to any questions.
E T (just "E T" to everyone)
Milton, WI
Little Friends
A few of my friends.
