I recently sold a few conversions with the newest version of the Chinese ignition everyone is now using...
The cap is made to fit the 5/8 hex 14mm Champion RDJ7Y spark plug...
The plug has a taper seat instead of a gasket...
The plug WILL work in an engine made for the RCJ7Y spark plug that uses a gasket..
I cut an old cylinder in half and screwed the spark plugs in to check the distance to the end of the plug from the inside of the combustion chamber...The distance is almost exactly the same with either plug, maybe a few thousandths difference...
Either will work...There will be a version with a Bosch cap clone available so those who think a taper seat plug will not work in their engine...
My conversions with the ignition circuit inside the mount will still use the C&H circuit with syncro spark, engines with a separate ignition box will be Chinese from C&H..
A word of warning, a taper seat spark plug has been known to split an SPE 26cc cylinder when screwed in too tightly...Must be some really good aluminum..

Have you tried the NGK BPMR6f? It's allot cheaper and I have been not able to tell any performance difference between the two. The NGK fits the cap.

Have not, the Champion was available here at an auto supply...Should work the same...
Keep up the good work, looks like you guys are doing it right...Some of the other companies should take note...

Are you guys saying that the NGK BPMR6F and the Champion RDJ7Y spark plug are the same physically?
If so, then my BME and Brison plugs can be used interchangeably.

I have a spec sheet from an ignition manufacture that list them as the same as well as the Bosch HSR8E. I have used all 3 in our motors.


Cheers,

sparkplugs.com

Right, they are the best source!

I went to sparkplugs.com and they recommend a non-resister Denso plug (T20MP-U).
I would not be comfortable in using a non resister plug in a resistor application.

I agree with you, thats dangerous.

Go here for cross reference with the NGK BPMR6F: http://www.ntbp.com/sparkplug/images/DENSO-NGK.xls
It seems they don't make a resistor plug.

RCIGN1, can you give us a bit of info on the Chinese system, does it work like the C&H as far as advance etc?

Sounds like it is being made for C&H directally, is it a different circuit?

Who else is using it?

Any other info you can share?

There's one Chinese company making very good ignitions...They are sold to many manufacturers, any name can be put on the box....Bill tested all the Chinese ignitions, found that this one works very well, is now selling this ignition...It says C&H ignition on the label, made in China...I don't think there is any difference in the internal circuit...There are shielded caps to fit the different types of spark plugs...
Works just like the C&H, first flip retards from 28 BTDC...
Not made for him specifically, he just likes the way they work so he is now selling them in addition to his own....

We have worked with this company for a while now. They are very professional and there QC is some of the best.
You can find all the specs here: http://www.rccdi.com/
We have found very little difference between the the two except for price.

One possible problem...The connector inside the cap is a spring....You can twist the cap the wrong way and make the spring bind on the end of the plug when taking it off..Easy does it, a slight twist will make it easier...I think Bill said counterclockwise

I see you came out from under your rock. Yes we are selling the RCEXL system . This was a very decision to make. But the UAV-RPV builders are taking about all the HD CH systems we can build. I am 72 years old and have been doing this for 26 years am a little burned out.
The RCCXL is very good. Alittle more batt drain then the CH and almost unrepairable. Plug cap can be changed and wires if torn off out side the case.The RCEXL plug cap is a little tricky to remove. We have already had one flier tear up the cap . Do not put pliers on it,do not pry with a screwdriver This will void the warranty. Just turn the cap clockwise as far as you can do not pull up. Then pull up and turn counter clockwise at the same time will come right off. Use a little silicone diaelectric grease on the spark plug.


You cannot learn much listening to yourself talk.
BCCHI

.

Bill,
Is there pricing for the new system?
Will you continue to service the original system?

$79.95 for the single, $99.95 for the Twin... Eather in 10mm (CM6) or 14MM (BPMR6F). We will contimue to service the CH units, after all there is 26 years worth of them out there. We will continue to make the HD CH units for the UAV programs and for model use.

WOW, thanks
That is a great price.

To all CDI gurus !!! I confused about RCCDI timing.
What is really advance timing/angle ?
Mark Fuess, in Venom engine review >18 deg at idle and 35 deg at WOT
RDCDI site in technical notes: 28 deg for RPM >2000 and 35 Deg for WOT. Also angle between sensor and magnet > 40 deg
My question is : this ignition will works with my 3w24 engine (old sensor one magnet.) ?

Sorry for my english but the message is important

Best regards
Dino

Old 3W ignitions did not use a hall sensor...The rccdi ignition WILL work if you use the sensor that comes with the ignition...You will have to time it at 28 BTDC.....PM TKG for instructions, they have done extensive testing with this ignition...It works very well, I have used both the single and twin systems...Bought from C&H with their logo on the box....

Thank Ralph. I will contact Bill (BCCDI).Few ears ago i bought fom him an original and american ignition. Made the job perfect in an OS 91 4t engine (methanol) without a drop of nitro.
By the way will work with NGK CM-6 ? with DA/3W etc. resistor cap ?
This ignition was intended for a resistor plug.

Bill can supply the ignition with either cap..

Thanks. PM sent to Bill (bcchi). Wanting for their answer.