battery to back helmet

[Sewer Rat]

Yep another stupid question:
Firstly My T6 oldham got the better of me and i bought a headlite kit
"please Sam T stop hitting me!!"
any normal person would figure out how to fit the strap to the helmet
not me.
do you have to screw the strap to the helmet ????? and then tighten it .
What i have done works but it can move up and down if you tug it a bit
I fixed a light mounting bracket to the back of the helmet and fed the strap through that .
the people i have caved with all have petz boxes screwed to their helmets and battery packs that went into these so i couldnot take a sneaky look.

Trust me i feel stupid asking this
But give me stupid over ignorance any day.

 

[George North]

Here's how you do it:

Drill two holes approx 7mm in diameter in the back of your helmet. They need to be spaced about 60mm apart, one vertically above the other. You thread the strap through the two holes and then around the battery and that's it!

George.

 

[Duncan]

Here's how you do it:

Drill two holes approx 7mm in diameter in the back of your helmet. They need to be spaced about 60mm apart, one vertically above the other. You thread the strap through the two holes and then around the battery and that's it!.

In fact you can get away with just one hole ('ang on, I'll just go and measure it...) 75mm from the rim of the helmet. The end of the strap with the buckle on it hangs out from under the rim of the helmet, and the rest of the strap goes up inside the helmet, out of the hole, through the slots on the battery (the battery should be between the strap and the helmet), and then into the buckle.

 

[darkplaces]

SuperGlue... Tiewraps are my fav as they can be tightend removing the anniying wobble.

 

[cap n chris]

Also you should use a hot spike to melt a hole (careful where it goes through on the other side!) through your helmet (unless it's speleotechnics glass fibre) since it minimises cracking and keeps the helmet strong.

BTW retro-engineering like this invalidates the CE approved status of the helmet but I imagine you are a "normal" person/caver rather than using the helmet in the course of your job. The only manufacturer I know of who produces a helmet specifically engineered with holes to mount speleotechnics headlite batteries are Dragon. IIRC they cost about £38.

 

[Sewer Rat]

I have already gone beyond the "thou shalt not make holes in your helmet"
I have a 3 led princes light on the side held on with cable ties, and you had mentioned melting holes instead of drilling them in the past. so all my holes have been made with a hot poker, soldering iron even.