From:Barry Brown e-mail:oldmill@kingston.net
Subject:RE: RE: RE: RE: RE: RE: Sparks plugs Date:Tue Mar 1 08:16:12 2016
Response to:6104
It is not difficult to find many references for retrofit plugs for your Henderson
or any other old bike BUT that is not definitive proof of what was fitted at the
factory. I suggest searching through the back issues of the contemporary
motorcycle periodicals .

----- ORIGINAL MESSAGE FOLLOWS -----
Thanks very helpful Brian Scharff from
Findlay Ohio

----- ORIGINAL MESSAGE FOLLOWS -----
Here is the photo of a 1951 AC plug for
Henderson.

----- ORIGINAL MESSAGE FOLLOWS -----
I don't know which brand was factory
shipped, but here is some info:

I have an image of an AC ad from 1923.
It shows an AC 185MS for Henderson
motorcycles. I've attached the image.


I also have a 1951 AC spark plug catalog
and it lists AC O-6 for Henderson
motorcycles. The Champion equivalent
was 6M.

I will send a picture of this plug as
well. In both cases, the plug has fins
to provide better cooling for the air
cooled engine.

Peter

----- ORIGINAL MESSAGE FOLLOWS -----
Guess what I'm looking for is when you
took delivery of the bike in 1930 what
make came in the bike and an example of
what one look like

----- ORIGINAL MESSAGE FOLLOWS -----
I'm running Champion D16's in my 1931
KJ. Those are hot plugs
but the bike runs great on them.

----- ORIGINAL MESSAGE FOLLOWS -----
Can anybody out there tell me what spark
plug and heat range
came in a 1930 KJ and in a 30 superx
from the factory and a
picture would be helpful thank you