Its completely up to you if you want to cut holes and add fans for ventilation, It will help with fogging and such, I personally don't install fans and I have no problems but I have to admit it does get a little warm, but I take the hellmet off and cool off every once in a while, and yes certain dremel bits do an excellent job at making holes in helmets, as for how long it takes to install fans and such, depends on how well you know how to wire it up and mount everything, I would suggest not installing a fan right now if you are rushing the build, do it later when you have more time, also if its cool where you live, fogging and heat probably won't be much of an issue
Yeah I was thinking I'd skip the fan for now, but I will definitely find places to cut in small breathing holes. It would be nice to avoid the fogging and heat issues. Thanks a lot for the suggestions! Very helpful.
Looking good dude, reminds me a lot of my build!
Regarding fan cooling holes, I don't have any in my helmet, and I have one Radio Shack micro fan right in front of my mouth. So far, I haven't had any major problems with fogging. However, if I were to do it again, I would put slits (using a Dremel or rotary tool) in the "rebreathers" on the cheeks, and maybe locate one (or even a second) fan over those to draw in fresh air.
The reason I think I'm not having problems with fogging is that my neck guard completely covers my mouth and nose.
A neck guard that covers your nose and mouth would be super useful, but I feel like that's probably the most heat-intensive solution? I'll definitely be putting holes in those areas. By the way, can you run one of those micro 12V fans on just a 9V battery or will it severely underperform with only 9V? Thanks also for the feedback, much appreciated.
A fan is a very good idea. If you don't have a fan the visor will fog up and you will have trouble seeing. The best area IMO for some vents is to hide the slits in the tubing on the chin piece. I suppose you could use just fans and no air holes but that will greatly reduce the effectiveness. To make the holes you can a dremmel, whole process shouldn't take long.
Edit: wow guess I type slow beat by two posts lol.
Should I go with the rotary tool or the drill bit? Or I guess I could do both, doesn't matter too much, I assume. Is there an effective way of hiding the holes and slits if I throw them into the "rebreather" tubes on the sides of the chin? Thanks also for the feedback
UPDATE: Today I sanded like crazy. I only have 1 bicep, 2 forearm, and 1 COD piece left needing sanding. Tomorrow I'll finish that up and get a coat of primer on everything. I also bought my first visor/faceshield today! It was gold and it cost $50. Ouch. But it looks sexy as hell, so it was worth it. I cut out the visor to the appropriate shape and used BLACKULA's tutorial to fit the visor. Tomorrow I will also be gapping the visor.
Here are the pics for today:
This is me this morning trying to think of a clever place to hide some air holes:
This is my wiring setup for the 4 LEDs will be using in the helmet. I guess LEDs actually do have a bit more internal resistance than I initially thought, so I will probably be swapping out the current 100 ohm resistor for a 50 ohm (or by putting two 100 ohms in parallel):
This was a test fit of my visor to the helmet in the car moments after I bought it. I was so excited! It was still in the bag lol:
This is the visor after I raped it with the dremel and made it fit appropriately. Note, at this point I have already installed 2 aluminum posts to mount the visor in with screws:
These are the thigh pieces I finished sanding today:
Hopefully I can get a lot done tomorrow! I don't know if I will be able to get more pictures tomorrow, but I will do my best!
Thank you all for the feedback so far. It has been very helpful and I really appreciate it!