Heated hand grips and LED light - Snowblower Forum : Snow Blower Forums
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post #1 of 27 Old 01-29-2019, 05:23 PM Thread Starter
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Heated hand grips and LED light

Ok guys, Iíve been wanting to add some heated grips to my HS 928 machine which has the 12V/50W coil system for the work light. I plan to switch to a PAR 36 LED which uses 9 watts and then install some heated grips, maybe the simplicity or Ariens ones as I like the look of them more than the Amazon ones. I know some folks run a rectifier and/or battery setup. Iíd like to just run off the engine if itís possible. It seems possible on paper with a 9 watt light and a 30-40 watt set of heated grips. Can anyone confirm? Does it work ok? What grips are you using?
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post #2 of 27 Old 01-29-2019, 08:39 PM
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It will work fine.

Remember to incorporate a bridge rectifier and capacitors in-line with the LED bulb.
Details:
https://www.snowblowerforum.com/#/topics/6602

If you don’t get enough lumens as expected from the LED you can wire the hand warmers in series to reduce the watts(and warmth) to increase the watts of the LED bulb or upgrade to a dedicated LED light bar.

I’m using Ariens 721014 hand warmer kits on a ‘89 ST824 924050 repowered with a Tecumseh HMSK100 (10hp) and on a ‘93 ST1032 924084 repowered with a Tecumseh OHSK120 (12hp) both with 1.5A/18w AC.

If you wire the heaters in series, each will get 6V, not 12V. This will reduce their output to 1/2 of the original. So 12V, 35W heaters would put out 9W each, totaling 18w, if you wire them in series cutting their voltage in half you will stay at or below 18w.

To do this, you'd run one output from the alternator to wire A of one heater. You'd connect wire B of that heater to wire A of the second heater. Then wire B of the second heater would go to the alternator.

I have a 2A fuse wired in line before the toggle switch on the panel.


They don’t get as warm as my neighbor’s new machine but my hands don’t get cold using mine.

Make sure the outer diameter of the handle bar matches the inner diameter of the heated grips for whichever kit you purchase.

Good luck!

Ariens ST1032 924084 (ST1232)
MODS: Tecumseh OHSK120 12hp, 3" Pulley, 6 Blade Impeller Kit, Hand Warmers w/ on-off switch, 1700 Lumen LED bulb,Front Weight Bar 18.5lbs, Chute Clean Out Tool, Tire Chains, Drift Cutters, Armorskids

Last edited by Homesteader; 01-30-2019 at 07:30 AM. Reason: Forgot to answer original question.
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post #3 of 27 Old 01-30-2019, 12:02 PM Thread Starter
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I didn't think I needed to install a rectifier for the led bulb per this thread as long as I use the right bulb.
https://www.snowblowerforum.com/foru...28-hs1132.html
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post #4 of 27 Old 01-30-2019, 12:06 PM
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Some of the newer Ariens heaters are wired in series from the factory. The ones on my Pro 28 are, for example. And even wired in series they're still around 40 watts and quite toasty.
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post #5 of 27 Old 01-30-2019, 12:32 PM
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I used the Oxford Heated Grips on an HSS1332 wired to the battery. They work great.
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post #6 of 27 Old 01-30-2019, 05:07 PM
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Quote:
Originally Posted by vmax29 View Post
I used the Oxford Heated Grips on an HSS1332 wired to the battery. They work great.
Do you remember which exact model of Oxford grips you used? OF692Z maybe? 25mm / 1" bar size, right?
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post #7 of 27 Old 01-30-2019, 07:29 PM
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I installed the heater handle this way, because we rarely use the right handle!

12V ATV Bike Motorcycle Heating Grip Handlebar Hand Heater w/ Switch Accessories

I install both on the same side !


And I Installed volt meter to !
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post #8 of 27 Old 01-30-2019, 08:18 PM
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Quote:
Originally Posted by Homesteader View Post
If you wire the heaters in series, each will get 6V, not 12V. This will reduce their output to 1/2 of the original. So 12V, 35W heaters would put out 9W each, totaling 18w, if you wire them in series cutting their voltage in half you will stay at or below 18w.
For a simple resistive load like a heater, if you go to 1/2 the voltage, you actually get 1/4 the power, not 1/2 the power.

A 4 Ohm resistor, getting 12V, flows 3A, and puts out 36W. But change to 6V, and the current drops to 1.5A, and power output drops to 9W.

Power = Volts * Amps
or P=V*I
But when you reduce the volts, the amps are *also* reduced proportionally. So the power changes by the square of the voltage change.

So you can wire heaters in series to reduce their power draw, just be aware that it will be a BIG drop in heat output. Your 12V 35W heaters, wired in series (6V each), are putting out 9W total, not 18W total.

https://www.rapidtables.com/calc/ele...alculator.html

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post #9 of 27 Old 01-30-2019, 09:07 PM
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Quote:
Originally Posted by tabora View Post
Do you remember which exact model of Oxford grips you used? OF692Z maybe? 25mm / 1" bar size, right?
It was the cruiser grips for 1Ē bars. Just checked, they are EL801Z

The Adventure Heated Grips EL690Z did NOT fit.

I had to shim one of the grips (throttle side) to fit but the kit came with a plastic shim. If they make a kit for atv with 2 1Ē grips for a thumb throttle type setup it would be perfect. I donít know if they make one. Hope that helps.
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post #10 of 27 Old 02-01-2019, 06:15 PM
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Quote:
Originally Posted by vmax29 View Post
It was the cruiser grips for 1” bars. Just checked, they are EL801Z.
Thanks very much for that info! I just purchased a set new on eBay for only $35 including shipping. He had them listed as the OF692Z sport grips, but they were in fact the EL801Z Cruiser grips 25mm / 1" bar size. Hurray - can't wait for toasty fingers in this weather we've been having!
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