Im looking at getting my hands on a gentex sph4 helmet. What is the difference between a sph4 and a sph4b. Is it the nvg mount on the front. Looking at doing a drop ship helmet for a bit of fun.

Looks like the front visor/nvg cover has two slots on the sph4b (one on each side) and only one central slot on the screen accurate sph4.

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Steve
Corporal in 69th Regt. 1st Batt. Homer’s Heroes.

"I'd like to die at the age of 80 in my own bed, with a belly full of wine and a girl's mouth around my c**k."

Yes the SPH4-b has the dual visor knobs because it has both tinted and clear visors (also has the nvg mount in the center):





^^This is the wrong model!


For our purposes, the correct SPH4 only has a single visor knob in the center of the cover as it only has a single tinted visor:





My SPH4. I haven't converted the ear sections or trimmed the visor knob yet. Paid about $275USD for it back in 2008.


Hope this helps and the best of success!


Kevin

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I told you I'd shoot, but you didn't believe me! WHY DIDN'T YOU BELIEVE ME!?!

Thanks guys. THats what I thort. Just seen a few without the double knobs and nvg be called sph4 not sph4b

Umm... just to be clear: One knob no nvg mount = SPH4 (what you DO want)

Two knobs and nvg mount = SPH4B (what you DON'T want).



Kevin

_________________
I told you I'd shoot, but you didn't believe me! WHY DIDN'T YOU BELIEVE ME!?!

Im going to build a Ferro sph4 helmet not a Spunkmeyer that looks to be a sph4b. Thanks for clearing that up.

Pretty sure Spunkmeyer's is an sph4 too, but has the added section holding the targetting sight clipped over the front.

Here's a Spunkmeyer replica:


P1010713 by medwaypvb, on Flickr

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Steve
Corporal in 69th Regt. 1st Batt. Homer’s Heroes.

"I'd like to die at the age of 80 in my own bed, with a belly full of wine and a girl's mouth around my c**k."

Thanks for the info guys. Got a SPH4 on its way. Time to start gathering parts.

Found out today from a guy in new zealand that spesalizes in sph4 helmets said that sph4 helmets come in both 2 knobs for dual visors and single centre knob for single visor. The sph4 looks the same as the sph4b but the sph4b is kevlar not fibreglass like the sph4. there are a few other differences but not really noticeable from a distance.

If you are looking for an SPH-4 there are a couple of things you should look for:
- the right size (as far as I know there is regular and XL)
- get one with the suspension liner instead of the later TPL (bubblewrap) liner
- it should have an M87 Mikrophone
- there should be no leather reenforcements on the earphone liner (forgot the correct name)
- look for a long microphone boom (there are long and short versions available) if possible with a thumb screw at the microphone end
- if you are very very .....very lucky, you can get a mic boom with the correct hinge as well

Hope that helps,
Stefan