Nytro MTX handle bar warmer..

[rotax]

I have my right side handle bar warmer thats "not warming" .. figured, no problem, 10-15$ to replace... Looked at a microfiche for a 2007 Nytro (NOT the FX)...but its showing as a $128 piece (SINGLE warmer).

WTF?????


I can't find the part in a 2008 microfiche, can anyone help me out? Do these 2 sleds use the same hand warmers?

I can get a complete "generic" kit for 40-50$; 2 warmers, wires, switches, done... is it really worth 128$ to have a variable controlled heater....wow....

Anyone else had hand warmer issues on their FX Nytros?

 

[ruffryder]

south seattle sports - generally pretty cheap

They want 90 bucks for each side, plus another 7 for each grip... what a steal

I wore through my left grip onto the warmer (1600 miles, too aggressive of gloves) to the point were I would get shocked when I would hit the brakes (wet glove and hand going to ground on the brake lever..). I thought is was some sick means of teaching me not to touch the brakes as much. Regardless, my left side doesn't work anymore and I am in the process of looking for alternatives... Without spending 200 bucks.

Post back what you find...

 

[rotax]

south seattle sports - generally pretty cheap

They want 90 bucks for each side, plus another 7 for each grip... what a steal

I wore through my left grip onto the warmer (1600 miles, too aggressive of gloves) to the point were I would get shocked when I would hit the brakes (wet glove and hand going to ground on the brake lever..). I thought is was some sick means of teaching me not to touch the brakes as much. Regardless, my left side doesn't work anymore and I am in the process of looking for alternatives... Without spending 200 bucks.

Post back what you find...

thats basically the same fish i found on babbitsonline.com and could not find the hand warmer for the FX nytro. Do you have a PN by chance?

For ~100$ I'll be looking a lot closer at my current one before i drop that $. hah I haven't done any troubleshooting, so maybe I'll be lucky and its loose connection (but I dunno when I was last lucky when it came to snowmobile parts...)

 

[ruffryder]

2 sku: 8gf-26241-00-00 grip 2 $7.23
3 sku: 8gn-2626a-00-00 grip, warmer 1 $93.11
4 sku: 8gn-2626a-10-00 grip, warmer 1 $93.11
5 sku: 90267-48014-00 rivet, blind 4 $1.78

 

[rednytro]

i took the grips out of a generic kit glued them on conected the wires and they worked perfect all season , till i hit a tree and tore the element

 

[rotax]

i took the grips out of a generic kit glued them on conected the wires and they worked perfect all season , till i hit a tree and tore the element

sweet, thats what i was wondering...i'll go that route!

sorry bout the tree! eeep


quick search on hand warmer..

http://www.denniskirk.com/jsp/produ...=305&productId=p391957&leafCatId=30504&mmyId=

think if i need to i'll go with that, see how it works..something better than nothing on the cold/windy days..

 

[ruffryder]

Did some searching and found these...

RSI High power - hooks

They look cool, don't cost too much, and extend to the hook. I will be trying these out with some new grips too.


Rednytro... You are saying you wired them up to your existing nytro wiring harness? So you still have the functionality of the handlebar switch and the gauge? If so cool, I am going to check out the manual too.

Anyone ever thought about putting that expanding foam stuff in the handlebars to help keep them warm?

 

[rednytro]

haha yeah trees happen . yep all i did was tie into the old grip wires and was good to go . i still use my stock hand warmer switch and gauge . id like to try a set of the 30 watt ones this year , im not sure if it will screw up the coumputer though if the elements can draw 30 watts instead of the normal 20 ?

 

[rotax]

Good find!

I wonder if it'll be a pita to get the grips back on over those *over the hook* elements.

They look self adhesive?

Did you find or see a wattage requirement for these??

I would not think the difference in 10W is going to do anything to an elecrtrical DC system. It'd be like plugging in something to your DC plug on the dash..adding additional 'load' to the system.

 

[ruffryder]

Yep, they are self adhesive. I think I am going to try out the tape stuff instead of putting on actual grips, RSI sells that too. Not sure how that is going to work, nor if it will be thick enough. I haven't seen a wattage requirement either.

 

[ruffryder]

More information about warmers...

ty apex link

I was wondering how the control logic works for the ecu in supplying power to the hand warmers... it seems the ECU puts out a PWM signal to the warmers (like, kind of an adjustable frequency square wave).

There is good information there about resistance of handwarmers.... replacements will need to be similar to get similar output. A reduction in resistance will increase the power (voltage = constant) P = (V^2)/R......

Anyone have a clue as to how the three wire elements are constructed? Obviously one is ground... but are the other two of equal resistance?

 

[rotax]

Wow, thats some way to complicated reading..

All I wanna know is if I can crimp into the current wires running to the hand warmers and use the RSI heater element instead. lol

I started a topic as simple as that as well.. Some people WAY over engineering something so d@mn simple. sheesh.

More information about warmers...

ty apex link

I was wondering how the control logic works for the ecu in supplying power to the hand warmers... it seems the ECU puts out a PWM signal to the warmers (like, kind of an adjustable frequency square wave).

There is good information there about resistance of handwarmers.... replacements will need to be similar to get similar output. A reduction in resistance will increase the power (voltage = constant) P = (V^2)/R......

Anyone have a clue as to how the three wire elements are constructed? Obviously one is ground... but are the other two of equal resistance?

 

[ruffryder]

Wow, thats some way to complicated reading..

All I wanna know is if I can crimp into the current wires running to the hand warmers and use the RSI heater element instead. lol

I started a topic as simple as that as well.. Some people WAY over engineering something so d@mn simple. sheesh.

I think part of the problem is that the power comes from the ECU. There are many questions as to if/how it is protected from faults and/or high currents.

To answer your question, I will let you know, when I know. Might have to take a fluke with me to the snow show to be sure...

 

[ruffryder]

I have a set of the grips coming my way, and I also have got the information on the RSI extended grip warmers. The grips have two elements per warmer, a high and a low. Below are the specs.

High = 6.4 ohms rated at 30 W
Low = 12.8 ohms rated at 15 W

The two elements can be wired in parallel for one side. That will give you the following

One side in parallel (high and low) = 4.27 ohms
Both sides in parallel again = 2.135 ohms

P = V^2/R so power of the handwarmers = 79.16 Watts
This assumes a voltage of around 13 volts. It looks like these will be a good match for our system.

I am going to be getting my hands on an oscilloscope soon (Mon or Tues). I plan on verifying if indeed the warmers only work above 4500, what the frequency/time period is, what the voltage is and if it changes with setting, and what the pwm signal looks like for each setting.

I will also be checking to see what the resistance is on the stock grips when cold, and when hot. I have talked with some who think there might be a difference. We shall see.

Should be some interesting information, and will help to see what the limits of the ecu are, or at least define them a little better.

nytro stock
left - 7.3 ohms
right - 7.2 ohms
parallel - 3.62 ohms
total = 54W @ 14V
27 W ea grip
amps = 3.86

RSI grips - parallel high and low in each grip, then parallel between grips
left - 4.28 ohms (equivalent)
right - 4.28 ohms (equivalent)
parallel - 2.14 ohms
total = 92W @ 14V (used for comparisons)
45 W each grip
amps = 6.57 amps

hotgrips - parallel
left - 3.0 ohms
right - 3.0 ohms
parallel - 1.5 ohms
total = 130W @ 14V
65W ea grip
amps = 9.29

nytro w/ 06 apex bars
left - 2.2 ohms
right 2.2 ohms
parallel - 1.1 ohms
total = 178W @14V
89W ea grip
amps = 12.71 YIKES!!!!

In comparing the above data, it looks like the RSI's are a good match for the needs of the nytro.

One thing that has me curious though, is if there are guys running the 06 bars on newer sleds, even though they are only running on 1 or 2, if the pwm output is at full voltage, then they will be seeing full current. If this is true (voltage magnitude doesn't change, only pwm signal) then I would assume that the ecu can handle 12 amps or so... Maybe.... we shall see.

If anyone has an apex in the washington area, I would be curious to see if the pwm signal is the same...

 

[rotax]

good stuff, thanks again rr.

i ordered mine (RSI elements) from team2 this afternoon.
who was great to work with and had a good price on the over the hook element. props.

out of curiousity i'm going to see what voltages show up at idle...since i'm also curious about this no worky under 4500 rpm thing..

 

[ruffryder]

I don't know ... not for certain. I should have an answer in a couple of days. Going to play with an oscilloscope...

 

[ruffryder]

not sure if you guys got to see the vid.. I scoped the handwarmer output and made a short vid..

Nytro hand warmers...

 

[jgargano]

RSI hi power heated hand grips?

How do you wire the three RSI wires to a two wire system apex gt? I know that the rsi wiring is white is hi, blue is lo, and red is ground. On apex gt left bar is yellow and black, and right bar is black and black with red strip? Do you wire hi and low toughter? as positive and red to ground or is it more complicated?

 

[rotax]

How do you wire the three RSI wires to a two wire system apex gt? I know that the rsi wiring is white is hi, blue is lo, and red is ground. On apex gt left bar is yellow and black, and right bar is black and black with red strip? Do you wire hi and low toughter? as positive and red to ground or is it more complicated?

yes, hi/low twist together and solder to your 'hot' lead from the sled.
ground from heater to ground lead from the sled.

 

[jgargano]

RSI Hi handwarmer

Is there a seperate HOT for left and right? When test light used only found one on right handlebar???? Does the wiring in the APex GT form a loop and this is why I am not getting a response from my test light?