igniter placement

[brumby]

Where is the best place to place the sparking part of an igniter? Towards the end the the chamber, in the middle or towards the front.

Thanks

[MrCrowley]

if your only making 1 spark put it in the middle

[brumby]

What about duel sparks.... and would a bbq igniter be capable oof doing dual sparks?

Also.. I have a T pipe at the end of my chamber and a chamber fan in the T..

[boilingleadbath]

Generaly, we suggest putting a single igntion point about 1/3rd of the way from the rear chamber wall [to the front of the chamber].
In reality, I suspect the ideal location is dependent apon projectile mass and chamber dimensions (among other variables)... but this will do.

As far as I know, there are no guidelines relating to the location of the gaps when using two sparks... and short of computational solutions, I don't know.
Just locate them at 1/4th and 3/4ths, I geuss. It may not be ideal, but the difference is likely to be small.