Cordless Heated Shield

[Cubby]

I love the concept for a a battery pack for the heated shield. I did a search and found this on the HJC website. There is a temperature control unit battery pack?

http://hjchelmets.com/hjca/tech_install_electShield

 

[smokingcrater]

Using the 12v =2a,reduce using a 1a fuse in the positive line.

Nope, fuses don't work like that. A fuse only does something when the current draw of the device exceeds its value, but it doesn't regulate the current draw in any way. What you are thinking of is a resistor.

 

[cannondale27]

Looks like a temp control unit is available. That would lower consumption. For now I will try a resistor inline. Thinking 1 a. With a switch. Will get in habit of only using shield when needed instead of on all the time like I do now. Easy enough to recharge the unit while riding also if needed. Just run cord to sled.

 

[wavemaster]

The unit says 12,000 mah or 12 Amp Hours.

The shield on average will draw 1.5 amp constant at 12vdc.

So in a perfect world if the load is 1.5 amps we could take 12ah / 1.5amp = 8 hours.

It is a full resistive load so it will be effected by temp and cabling etc.

The battery will not put out a consistent 12v the whole time.

My guess would be between 4 and 6 hours.

 

[cannondale27]

Yes I got 4 hrs out of a 90% charge so your math is right on. Not enough. I am shooting for 8 real world hrs. Test next weekend.

 

[scott32]

Nope, fuses don't work like that. A fuse only does something when the current draw of the device exceeds its value, but it doesn't regulate the current draw in any way. What you are thinking of is a resistor.

yep, my bad

 

[biffdotorg]

Yes I got 4 hrs out of a 90% charge so your math is right on. Not enough. I am shooting for 8 real world hrs. Test next weekend.

Here is a wrinkle as well, and it's something you won't probably be able to test until it gets colder. How long will it last sitting out in 5 degrees compared to your garage. Cool project!

 

[Blue Dave]

Sounds like a solution in search of a real problem. I would certainly rather have a cord to deal with than to carry a battery pack in my pocket. Just my $0.02

 

[biffdotorg]

I think you are right with that Dave. I was thinking of putting a gel battery on my person somewhere to power my GoPro longer. Then reality struck and it was obvious to just use an electric shield cable between me and the sled. I don't use an electric shield, but would easily justify using the cord to power my GoPro.

I think that is my next big seller is designing the water resistant back for the camera, that connects to the RCA-style power to the GoPro. I think I have a profitable idea there.

 

[Blue Dave]

I think you are right with that Dave. I was thinking of putting a gel battery on my person somewhere to power my GoPro longer. Then reality struck and it was obvious to just use an electric shield cable between me and the sled. I don't use an electric shield, but would easily justify using the cord to power my GoPro.

I think that is my next big seller is designing the water resistant back for the camera, that connects to the RCA-style power to the GoPro. I think I have a profitable idea there.

Sounds like a new product for Rocztoyz to develop and sell. Are you listening Rock?

 

[cannondale27]

Rock is listening. I just hate cords and being able to just hop off and on sled without it would be really nice. Keep in mind I also have a tether for the rollover valve. I don't like being beat and if you have to plug in cords you aren't going to be first!

 

[cannondale27]

Had a couple setbacks. At Muni group ride I left the rear bag open and lost my MicroStart in a Fluke grey pouch,toolkit with airpump,rope,tools and a Multiknife in the stock little bag. Was lost between hotel and the first T on trail. Reward if returned!

Anyway tried to make best of a bad situation and bought the New XP10. Should have researched better because in all my excitement over more batt power I did not look at size! Its to big to carry in pocket. I have no doubt it will do 8hrs with a shield but would need a backpack! Is nice in now it has boost and reverse polarity protection. Check it out. If I ever go on a overnighter and do use a backpack as I have in past I will give the shield a shot otherwise done with testing.

 

[Rockmeister]

Sounds like a new product for Rocztoyz to develop and sell. Are you listening Rock?

Lol, yep!

Biff, get ahold of me, we have a power supply that a few have purchased for their GoPro's.
Would like to streamline them for the GoPro, get ahold of me & let's work together on it.

Rock

 

[cannondale27]

Lol, yep!

Biff, get ahold of me, we have a power supply that a few have purchased for their GoPro's.
Would like to streamline them for the GoPro, get ahold of me & let's work together on it.

Rock

That's a great idea!

 

[cannondale27]

I still like idea of a all in one cord Rock. Hope you can figure it out.