UCE - twin spark?

[prof_stack]

Does the UCE G5 and C5 motor run with one spark plug or (as is the case with the Thunderbird model) the twinspark version?

This article is an interesting read:  http://www.royalenfield.com/company/news/therealitybullet.aspx

[t120rbullet]

The G-5 and C-5 will have 1 plug
The home market TwinSpark had 2.

[ace.cafe]

A twin plug system can be very effective in certain combustion chambers.

Essentially, it is a "band aid" for a chamber that is having flame travel issues.
This is common on hemi engines with high compression piston-domes which divide the chamber. Or on other chambers with excessive flame travel or impediments, or insufficient "squish" area.
It can help an older engine design remain viable and gain some power with less emissions, when there is a need to keep the engine in production.

I'm not quite sure why anyone would design a modern chamber which needed twin plugs to work correctly, when it is quite easily accomplished with a single plug design if you do it right.

[r80rt]

 I had my old R80 BMW dual plugged, it gave me a bit more power and upped  the gas mileage by quite a bit.

[t120rbullet]

I'm not quite sure why anyone would design a modern chamber which needed twin plugs to work correctly, when it is quite easily accomplished with a single plug design if you do it right.

It was explained to me that it was done to meet Indian emission standards without using a cat converter.