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-   -   Quadra 42 what spark plug to use (http://www.rcuniverse.com/forum/quadra-aerrow-engines-312/10222424-quadra-42-what-spark-plug-use.html)

joeskeeter 12-28-2010 05:50 AM

Quadra 42 what spark plug to use
Older motor that has the rcexl ignition.
It's a small plug.
Plug recoomendations for this motor please !
Going on a ultraspadstik build.
Getting close to mounting engine as soon as the fuel tank arrives.
What plugs are you guys using, I plan on trying a 20x8 prop and an 18x8 prop on it.
Also on the ignition battery, rcexl says to use a 4.8v 800 to 1200 mah battery.
I found a 1100 mah at onlybatteries.com thatis priced pretty good.

joeskeeter 12-28-2010 06:33 AM

RE: Quadra 42 what spark plug to use
1 Attachment(s)

w8ye 12-28-2010 07:40 AM

RE: Quadra 42 what spark plug to use
There are several plgs that would work on this engine.

What is the number on the plug that is in the engine. Does this plug fit the plug cap?

joeskeeter 12-28-2010 04:20 PM

RE: Quadra 42 what spark plug to use
The plug is Denso U20M-U.
I've never seen one of these.
I'm concerned the ignition plug cap might not work with
a diffrent head.
I called Bennett Built today and Mr. Bennett is out of the store until February 21.
And I'm getting close to finishing the SPAD and I sure would like to fly
it before then, and also would like to put a new plug in the motor since it has
been sitting for awhile.

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