Which bulb for Mag hotwire mod?

[Quest4fire]

Thanks! I'll check out Lighthound for the cells!

 

[Quest4fire]

If the size doesn't dissuade you and if FM has another run of his 4.5" PAR36 head, a Mag mod using that giant head can be a tremendous thrower. Couple the head with a 13V GE4509, GEQ4509, or Martek 4509Q small plane landing light lamp. This does exceed your ~75W draw requirement. It looks like 8xPowerGenix may slightly underdrive a 4509. Perhaps a bored 3D Mag mod using 12xElite 1700s is better (if and when 12AA->3D holders become available).

Here are some example beam shots, comparing a GE4509 (4.5" PAR36 head) vs FM1909 (2.5" Throwmaster head) vs Osram 64440IRC (2.5" Throwmaster head).

Whoa! That is some serious fire! Very impressive. Hope to graduate to a projects like those some day.

 

[Battery Guy]

If the size doesn't dissuade you and if FM has another run of his 4.5" PAR36 head, a Mag mod using that giant head can be a tremendous thrower. Couple the head with a 13V GE4509, GEQ4509, or Martek 4509Q small plane landing light lamp. This does exceed your ~75W draw requirement. It looks like 8xPowerGenix may slightly underdrive a 4509. Perhaps a bored 3D Mag mod using 12xElite 1700s is better (if and when 12AA->3D holders become available).

Here are some example beam shots, comparing a GE4509 (4.5" PAR36 head) vs FM1909 (2.5" Throwmaster head) vs Osram 64440IRC (2.5" Throwmaster head).

Wow, I have to admit that I am very surprised at the difference between the GE4509 with the PAR36 head and the FM1909 with the TM head. I would have expected the FM1909/TM combo to perform better.

Thanks so much for sharing. That is an excellent comparison. I especially like the comparison between the 64440 and the FM1909, both using the TM head. It really demonstrates what a huge difference the bulb makes.

Cheers,
BG

 

[Justin Case]

The 1909 focuses very tightly with the Throwmaster, but it just can't keep up with the huge, bright hot spot from the 4509. The 1909 lights up a tiny area of the tree. The 4509 lights up everything.

I probably could get more out of the 64440IRC, but with 5xIMR26500, I'm limited as to the Vbulb setting to use while still getting decent regulation. I probably could go to 19.5V or even 20.0V for Vbulb, but I doubt I'd run in regulation for very long, if at all.

Here is a head-on shot of the PAR36 vs Throwmaster: