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USB boot heaters - use battery instead?

post #1 of 16
Thread Starter 
Is there anyway I could convert a USB sole heater and use that in my boot as a sort of DIY heater instead of paying the $200+ on thermics or other?
I'm just not sure how to get a battery hooked up to power them...
post #2 of 16

I've never done it but it shouldn't be too hard.  Based on a quick google it looks like the boot sole heaters are only 10-30 bucks.  Some have batteries built in.  Those that don't I assume you'd have to run the wire between the boot liner and shell (same as expensive ski boot heaters) and then run that cord up your pants to a cell phone or similar USB device.  If the soles put out enough heat, it could work well.  let us know how it goes if you do it.


Edited by nathanvg - 11/13/14 at 3:10pm
post #3 of 16

Here you go.

USB is a five volt dc system.

Power it with a 6 volt rechargeable LION.

post #4 of 16
Thread Starter 
Quote:
Originally Posted by nathanvg View Post

I've never done it but it shouldn't be too hard.  Based on a quick google it looks like the boot sole heaters are only 10-30 bucks.  Some have batteries built in.  Those that don't I assume you'd have to run the wire between the boot liner and shell (same as expensive ski boot heaters) and then run that cord up your pants to a cell phone of similar USB device.  If the soles put out enough heat, it could work well.  let us know how it goes if you do it.


 



main problem is that I have custom soles already so I don't want to add or replace the soles in my boot.
Ideally I just need the pad to slide into the boot.
post #5 of 16

My question would be 'Do USB heated work in ski boots?'

 

ThermaCELL® Proflex Heated Insoles

ThermaCELL® Proflex Heated Insoles

Regular Price: 

$179.99

Overall Customer Rating:
Not Rated
post #6 of 16

a few steps in your project

1) First step is which USB boot heater will work in your ski boots.

Answer is I'm not sure.

 

 

2) If the question is how do you power USB on the go.  this is answered by portable USB battery pack.

There is a huge slew of these now on the market, with tons of different form factors.

post #7 of 16
Quote:
Originally Posted by GordonFreeman View Post
 
Quote:
Originally Posted by nathanvg View Post
 

I've never done it but it shouldn't be too hard.  Based on a quick google it looks like the boot sole heaters are only 10-30 bucks.  Some have batteries built in.  Those that don't I assume you'd have to run the wire between the boot liner and shell (same as expensive ski boot heaters) and then run that cord up your pants to a cell phone of similar USB device.  If the soles put out enough heat, it could work well.  let us know how it goes if you do it.

 



main problem is that I have custom soles already so I don't want to add or replace the soles in my boot.
Ideally I just need the pad to slide into the boot.


I don't think that's a problem... As I recall the expensive boot heaters are typically put in the boot liner 1st, then the sole is put on top of that and the whole thing is glued in place.  They cut a small hole in the toe to run the wire out.  Seems you could do the same

post #8 of 16
Quote:
Originally Posted by nathanvg View Post


I don't think that's a problem... As I recall the expensive boot heaters are typically put in the boot liner 1st, then the sole is put on top of that and the whole thing is glued in place.  They cut a small hole in the toe to run the wire out.  Seems you could do the same

 

The Hotronic heating element are peel & stick units. They are affixed to the top side of the foot bed (custom or otherwise). Holes are made in both the foot bed and the bottom if the boot liner. The wire is feed through the holes at the bottom of the foot bed and liner and then routed at the exterior of the liner inside the boot shell to the upper cuff of the boot shell. A self adhesive fabric cover is then placed over the heating element and the foot bed to provide a smooth surface for the foot to rest upon. The heating element is more or less in direct contact with the bottom of the foot with the fabric cover in between to provide a smoother surface.      

 

Don't know what they do with Thermic units. Maybe someone can enlighten me. :cool 

post #9 of 16
Thread Starter 
Do you think the fabric cover does much?
Would putting duct tape over the heating element cause any problems with having even pressure on the footbed while skiing?
post #10 of 16

The fabric cover does seem to smooth everything out. Cost about $10 per pair. Haven't had any problems with them. No creep during use and no adhesive residual after removal.

I don't think a single layer of duct tape over a custom insole will alter fit that much. However, I would not use duct tape for that purpose. Duct tape usually leaves a nasty sticky mess that's a pain to remove. Not to mention they creep quite a bit under pressure and will probably end up all bunched up. The area over the heating element will probably be a real mess with both the heat and pressure.

Some other thin fabric type tape with a thinner & more stable adhesive might do the trick. But then that's what the Hotronic fabric cover is.       

post #11 of 16

I put the Hotronic elements in my daughter's race boots and she a) cannot feel the element or the cord, b) nothing slips and c) cannot feel the cord or tape around the cord

post #12 of 16
Quote:
Originally Posted by rhygin View Post
 

I put the Hotronic elements in my daughter's race boots and she a) cannot feel the element or the cord, b) nothing slips and c) cannot feel the cord or tape around the cord

 

How and where do you run the heating element cord from the top of the foot bed top outside the boot?  

I've seen several different method/route with varying success.

post #13 of 16

Good question.... I asked a lot of people including the guy who is arguably the best boot guy in New England.

 

I put the heater element on the top of the insole and put the sticky red cloth on top.

 

I sliced the foot bed and fed the cord to the underside of the foot bed.  Some people then run the cord under the foot bed and exit the liner at the base of the heal and run the cord up the back/outside of the liner.  I put a slice in the liner on the bottom of the foot... right where the cord was exiting the foot bed and then ran the cord on the outside of the liner from that point forward.  I used duct take to prevent wear and keep it all together.  I do believe this is the best way to do it.  

post #14 of 16

I have always been able to feel the element under my foot, so instead of running the wire toward the back, I turn it the other way so that the wire has to exit a slit in the toe of my liner. Then I wrap it around the liner (with some duct tape) and up the boot. This also has the advantage of not having to cut your footbed, though I'm not sure that's a big deal. 

 

(Yes, I know, princess and the pea, but the metal part where the wire and element attach, I can feel it. This way I also don't have any more duct tape running under my footbed, either, upsetting that delicate fore-aft balance! haha)

post #15 of 16
Quote:
Originally Posted by segbrown View Post

I have always been able to feel the element under my foot, so instead of running the wire toward the back, I turn it the other way so that the wire has to exit a slit in the toe of my liner. Then I wrap it around the liner (with some duct tape) and up the boot. This also has the advantage of not having to cut your footbed, though I'm not sure that's a big deal. 

(Yes, I know, princess and the pea, but the metal part where the wire and element attach, I can feel it. This way I also don't have any more duct tape running under my footbed, either, upsetting that delicate fore-aft balance! haha)
It's this kind of thing that can mess with someone's head. I will not be putting my boots on just to see if I can feel it.
post #16 of 16
Quote:
Originally Posted by segbrown View Post
 

I have always been able to feel the element under my foot, so instead of running the wire toward the back, I turn it the other way so that the wire has to exit a slit in the toe of my liner. Then I wrap it around the liner (with some duct tape) and up the boot. This also has the advantage of not having to cut your footbed, though I'm not sure that's a big deal. 

 

(Yes, I know, princess and the pea, but the metal part where the wire and element attach, I can feel it. This way I also don't have any more duct tape running under my footbed, either, upsetting that delicate fore-aft balance! haha)

 

My son is a princess just like you. :D So he runs his wiring the way you do. Works for him. 

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