RE: Grpro 100cc twin. or?
 

If you have two ignitions that are used for timing at 28 deg BTDC you can make a harness for the sensor and run two single ignitions in the place of one twin ignition.

Also if you only have one single cylinder ignition, Try it on one cylinder and see if the engine runs, Will not run with full power of both cylinders but will tell you it the twin ignition is bad.

Milton

RE: Grpro 100cc twin. or?
 

Yes, u r rigth. 3mm on the roto. I have another from the first grpro on the top of the tread. Smaller plug caps, but it wil do if i change them? (larger plugs on my new engine)


Thomas

RE: Grpro 100cc twin. or?
 

By the way, im doing this for fun:)

I just wanted to test chinas finest!

Thomas

RE: Grpro 100cc twin. or?
 

No problem, I have been having fun with gas engines for years, Used to convert weedies to just see them run.

Milton

RE: Grpro 100cc twin. or?
 

The spare ignition that i have is also for a china twin,and same timing- so il just have too get past the spark-plugg cap size issue.

RE: Grpro 100cc twin. or?
 

The engines I have are GR PRO and they are blue sold by the same
chinaman, Alfonso Wang.
You do not have to change the cap, just change the plug to the cap you have , that will work. if you do not have the CM6 plug.
CM6 is the small plug.

Larry LS PRO ENGINES

RE: Grpro 100cc twin. or?
 

i understant your problem with the two engines you got. I think somthing happened inside mine too, and caused the mountings to snap off.

But i will recomend this engine for deap-sea fishing. it sinks realy good:D

RE: Grpro 100cc twin. or?
 

I have these two plugs. The big one is for the new engine, small for the old. The biggest have a gasket, the small one dont.

RE: Grpro 100cc twin. or?
 

Thats the only difference, the gasket or the taper to seal. they will both work in the engines. The tread size is the same.

Larry LS PRO ENGINES

RE: Grpro 100cc twin. or?
 

Edit: I was wrong:) Plugs wil fit, but is it ok for the smal plugs to seat where they seat? not mutch metal there.. not cone..

Thomas

RE: Grpro 100cc twin. or?
 

by the way, anyone know what th bushes on the connecting rod are made of?

Thomas

RE: Grpro 100cc twin. or?
 

If it was an American engine they use a bearing called oil lite bearings. It is usually bronze.

Larry, LS PRO ENGINES

RE: Grpro 100cc twin. or?
 

Hey All
I am the North American Distributor for the RCGF line of engines. Along with Andreas and AussieSteve, we have been working hand in hand with the factory, their engineers, and our customers on the engines. Pat Roy did a comprehensive review on his personal thoughts on the 100cc engine too.

The factory is not only listening but designing these improvements into their engine lineup. Our biggest issue is the copycat manufacturers out there. They will use the RCGF design almost to the tee. Not the RCGF manufacturing discipline mind you. These copycatters will advertise the engines with pictures from the RCGF library. Nervey eh!!

That said, there are those that actually buy these copycats and sell them AS RCGF engines. How do I know this? I am dealing with 6 (six) North American customers that are trying to get warranty work on their engines. I am working with each and every one of these fellows and each and every engine has been investigated by me. They are NOT RCGF engines but real cheap, crappy, knockoffs.

I feel badly for the guys, but also the RCGF name and reputation suffers as a result. The factory has finalized and is producing engines that are now serialized and we (the dealers and distributors) will have all the numbers. No more fooling around.

Also, RCGF is coming out with a 150cc engine. If you go to the GRPRO site and then to my site (www.zrcgf.com) and compare both pictures, you will see that they are the SAME engine. The RCGF factory sells their engines in China too, so 3rd parties do buy them, but then they are reselling them. I guess we know who now!! Guess where the warranty issues will be handled.... You guessed it... If the customer did not buy from a RCGF distributor or dealer then NO warranty unless you go back to the seller. Good luck to that, as this posts and others have stated. Can you see that I am a little perturbed.

I know that AussieSteve and Adreas have posted the same sentiments on this site too.

I guess in summary, that just because the engine is made in China, does not mean that it is crap... It means that we as consumers (modeler) have to be vigilant, and aware. There are a lot of great products coming out of Asia. There are also opportunists who want to cash in on this with inferior products. This is why many of the quality manufacturers such as RCGF are setting up distributors who can work with the dealers and the customers first hand.

Henry
[email protected]
www.zrcgf.com
North American Distributor - RCGF Engines.

RE: Grpro 100cc twin. or?
 

If someone was looking into purchasing a 100cc Chinese twin my vote has to go to the RCGF engine. The machine work is good, the parts fit is excellent, the crankshaft is the best of all coming out of China and machined to very high standards. The engine case and mounting lugs are machined from bar stock and leave the mounting lugs extremely strong. I don't think anyone will ever break a mounting lug on the RCGF 100 twins.

After purchasing mine, many changes and improvements were made to the RCGF to improve the internal quality and increase the longevity of the engine. The wrist pin bearings were changed from busing to rollers, a few changes were made to the reed block and carb to make for easier mounting, the prop bolt pattern is supposed to have been changed to match the DA and 3W bolt patterns, the muffler fit has been improved, and the exhaust flanges have been made a bit "beefier".

After only changing the rod bushings to bearings, replacing a defective ignition, and some minor machine work on the front hub to eliminate some rubbing mine is turning a solid 6,200-6,300 rpm at a desert altitude of over 4,000' msl. I mentioned desert because it's hot there, changing the effective density altitude to over 8,000'. That's a strong engine! All of that and more has been incorporated into the latest production run of RCGF engines.

Don't be fooled by companies like GR Pro. Mistydee0 used to be a GR Pro dealer. He ceased for a good reason. His knowledge of their practices is vast and accurate.

RE: Grpro 100cc twin. or?
 

Thomas

RE: Grpro 100cc twin. or?
 

RCGF does sell LOTS of their engines in China. What they are trying to do is get control of who can sell them as dealers and distributors.
Right now, anyone in China can order any number of engines and the factory rep will sell them. If that person sells it over ebay or to ANOTHER company, then here is where the problems begin. Currently there is NO tracing of where they were originally purchased. This is being handled with the new releases coming on line now.

If the engine you are using is an RCGF engine, then congratulations, you have an excellent engine that will provide extremely competent service for MANY years to come. However, if you need servicing or warranty work that may be an issue, since warranties will be honored by the factory only if they have been sold through their distributor network. That said... ALL of us who are bona fide dealers and distributors will work with you to resolve any issues you may have for any of the RCGF engines.

As an aside here. I have the RCGF 65cc engine running on a test stand. So far I have put 165 hours on it. I am running a 40:1 oil/gas, @6500 rpm with a 22/8 prop. I am using a 5 gallon gas tank to run the engine continuously. I want to run the engine to failure point. I attached a fish scale to the stand (its on ball bearing wheels) - 28 pounds of thrust. For the average modeler this is a LOT of years of usage.
So far so good....

Henry
[email protected]
www.zrcgf.com

RE: Grpro 100cc twin. or?
 

Its good that you test the engines u sell!

Thats what im doing too:)

When did the "new`n improved! Rcgf hit the marked?

RE: Grpro 100cc twin. or?
 

will a DA 100 hall sensor fit this engine? The rxexl sensor that goes with the ignition dit not work with the Grpro ignition. I uset a Grpro ignition on the engine today, to confirm if the rcexel ignition was the cause to the problems i have.

I am reciving a new Rcexl, but not a sensor, my seller asked if a da sensor was a fit..he was out of Rcexl sensor.

RE: Grpro 100cc twin. or?
 

It is not a fit.

RE: Grpro 100cc twin. or?
 

Anyone knows the size of the rollers that fit?

RE: Grpro 100cc twin. or?
 

The new RCGF Engines are not "new" models per se. Yes we have added incremental updates that up the power curve, make the engine more robust (for example thicker ears on the mounting points), and aesthetics (hey it is eye candy) that will provide brand recognition that it is a RCGF engine. This will help us against the cloners and the unauthorized resellers too. The biggest improvement we made is to add serial numbers to the engines.


Henry
[email protected]
www.zrcgf.com

RE: Grpro 100cc twin. or?
 

I guess the bottom line is that if the guy believes he is getting a good product with the GR Pro copy at a price he likes he should buy the GR Pro and quit trying to up the quality by substituting RCGF parts. By the time he's done he would almost have an RCGF but at a higher end cost. Almost is the operative word here...

RE: Grpro 100cc twin. or?
 

Great words Pat... I totally agree. Enough said.


Henry
[email protected]
www.zrcgf.com

RE: Grpro 100cc twin. or?
 

Hey pat, thats funny-my T-shirt says "Almost" :) At higer cost? no, i sell these engines. This is a test engine, and it wont be solt if its not any good.

But iv would be mutch more happy selling the Rcgf with serialls. Il buy a Rcgf too.

RE: Grpro 100cc twin. or?
 

Just a thought, but warranty and parts inventory issues might be minimized by sticking with the RCGF. Making a little money with each sale is a good thing but to lose it later in customer returns is just not worth the effort.