All Day Dan

My Feedback: (5)

I am changing my Brison engines from the original mechanical advance to auto advance with the new CH ignitions. After resetting the ignition timing to 28 degrees before TDC in accordance with this video from Milton, http://www.youtube.com/watch?v=GBXFpxWg7vY
I removed the button head screw near the sensor and replaced it with a ½ inch long socket head screw. The screw is jammed against the crankcase and is about 1/64 of an inch above the timing ring. I have tried to rotate the ring and dislodge the sensor with an awful lot of force and neither moved. I have also flown one engine like this for about twenty minutes with no issues. I got this method from Bill Cunningham, the founder of CH, a while ago. Has anyone else modified their Brisons this way? Dan.

w8ye

My Feedback: (16)

Yes, that's the way it's done since the synchro spark came out.

Bill Carpenter was the original owner of CH ignitions

Ralph Cunningham owned RC Ignitions

Adrian Ciulei now owns the new CH ignition

All Day Dan

My Feedback: (5)

Thanks w8. Good input. I got my names mixed up. dan.

bcchi

Bill Carpenter not Cunningham.
BCCHI

bcchi

Its Ralph Cunningham not Richard.
You can not no how little I really care.
BCCHI

w8ye

My Feedback: (16)

Thanks, I corrected that

All Day Dan

My Feedback: (5)

Thanks for the conformation, Bill. By the way, you did your job well. Adrian is great whether you care or not. I’m sure you care. Dan

bcchi

I guess we got that strightned out.Of course I care,Just sorry I can not do more. Very lucky in one way all of my health problems has not affected my eye sight.Still go flying several times a week.
Have been flying the DL 35 RA sence they first came out. It is a monster engine. Put in Bowman ring done the reed treatment and the BC speed treatment.I no it will turn with the OS 33,don't no about DA yet.
I build my own ignitions of course.But RCEXL uses about the same timing,except for the #4 on the DL 20 and Xu Liang nos that is wrong but says that is what DL wanted.
Yes Adrian is a very sharp guy.
BCCHI AMA 2500

gadix

My Feedback: (2)

Mine were converted years ago by the mfg in TX which I forgot the name... Just before he closed the business and sold it to a Canadian rc Shop...

All Day Dan

My Feedback: (5)

Gadi, Do you have an image of the conversion that you can post or describe it? Dan.

gadix

My Feedback: (2)

Dan
the B2.4 is installed on my Pitts S2 1/3 scale...
i iwll need to remove the cowl to take pictures for you
BUT
maybe i have old pics on my backup HDD..need to find them....
will do my best though
Gadi

gadix

My Feedback: (2)

see my very old post...
http://www.rcuniverse.com/forum/gas-...mid-air-2.html

some more posts: http://www.rcuniverse.com/forum/gas-...-bearings.html

the guy fromTX was Garry
he sold the Brison to Kange at the time
the brison is based on a DOLMAR engines

gadix

My Feedback: (2)

found the pics!!

this is the B2.4 with mechanical advanced IGI !!

today i have a CH ignition on it , without the mechanial unit.

All Day Dan

My Feedback: (5)

Thanks for the images Gadi. I see that the original button head screw is still installed next to the sensor and that another screw has been added to the timing ring. Is there only one additional screw? According to designer, that button head screw retains the sensor in place. Anything else won’t. On mine, I can’t budge that sensor with the socket head screw I have in there now that does not make contact with the ring. Dan.

bcchi

His name was Gary Allison,Nice guy hard worker,but hurt me pretty bad.
Bill C,BCCHI

gadix

My Feedback: (2)

the screw have 2 applications
1 to hold the ring in place after you adjust the TDC
2 to hold the sensor in place as it can move FW/BRW over the magnet
3 the ring is held by an C clip ring as well - look at the photo you will see it

the screw isnt 90 dgree to the shaft, it is in an angle so it put pressure on the sensor housing as well

gadi