Electric start?

[Kricket]

Can you remove the e start and ring gear around the primary? I just bought a 2011 and want to sell the e start. Also is there any wiring that needs changed I know I had to get a non e start wiring for my summit. Thanks

 

[ENDO1]

Can you remove the e start and ring gear around the primary? I just bought a 2011 and want to sell the e start. Also is there any wiring that needs changed I know I had to get a non e start wiring for my summit. Thanks

Just unplug the connector on the right side above the brake caliber, and yard the rest out and you will be good to go. Where did you buy your sled ?

 

[Mark's RMK]

E-Start

The E-start can't be reinstalled on another sled unless you keep the ring gear on the clutch and sell/swap out clutches. The clutchs aren't drilled and tapped for the ring gear.

 

[mountainhorse]

Yep... if you sell it...you will need to swap the clutch with the person you are selling it to.

Also, If you were to just remove the ring gear.. You would need to re-balance the clutch as they are balanced with the gear mounted.

 

[mountainhorse]

The wiring is easy... It has a connector for that... all the sleds wiring have the ability to run a starter as far as the wiring goes.

 

[Kricket]

Got it taken out. It weighed 23 pounds minus the ring gear. ENDO1 I got it at Chets in Quincy.

 

[Matte Murder]

Could you weigh everything but the battery? Or just the battery you took out?

 

[Max_Power]

Everything without the battery weighs 9.5 lbs. I'm just packaging mine up to ship today.

 

[ENDO1]

Weighed my battery last night on the bathroom scale, 15 lbs. Thinking about trying one of the light weight ones, any one have any idea which one to get,
and how well they hold up to the cold and vibration's ?

 

[mountainhorse]

I'd look for Murph's recommendations on here.... that guy is the battery guru.

 

[wyojules]

I am looking but cannot find the right spot because I don't know how to look.(idiot)Could you please post the battery size and brand from Murph, or give me a link? THANKS!

 

[akrevrider]

Bump...Have you found the replacement battery yet?

 

[Murph]

Speedcell batteries

The most popular Speedcell batteries that guys are buying for the ProRMK are the:

6.9 aH (12 cell)
4.6 aH ( 8 cell)

The difference being the environment that you are operating in (how cold, left outside overnight, etc) and the protocols you are willing to follow. Both batteries are equipped with dual pole Anderson style tool less QD (quick disconnect) connectors rated to 100g's.

We also sell the chassis side subharness that has the matching QD connector and allows installation without cutting into the stock harness.

Feel free to PM or call me with any additional questions.

Murph
[831]464_3458

 

[cateye5312]

The most popular Speedcell batteries that guys are buying for the ProRMK are the:

6.9 aH (12 cell)
4.6 aH ( 8 cell)

The difference being the environment that you are operating in (how cold, left outside overnight, etc) and the protocols you are willing to follow. Both batteries are equipped with dual pole Anderson style tool less QD (quick disconnect) connectors rated to 100g's.

We also sell the chassis side subharness that has the matching QD connector and allows installation without cutting into the stock harness.

Feel free to PM or call me with any additional questions.

Murph
[831]464_3458

I talked with the guys at Shorai and asked them about their lithium iron batteries and why they quit listing them as being for snowmobiles. They said the batteries needed some sort of minor electrical current running through them (such as being able to turn on the headlights without starting the machine) to warm up the battery slightly before it would be able to start a snowmobile in cold weather so they quit recommending them for snowmobiles. Since Speedcells are lithium iron batteries also how are you dealing with this issue?

 

[Murph]

I talked with the guys at Shorai and asked them about their lithium iron batteries and why they quit listing them as being for snowmobiles. They said the batteries needed some sort of minor electrical current running through them (such as being able to turn on the headlights without starting the machine) to warm up the battery slightly before it would be able to start a snowmobile in cold weather so they quit recommending them for snowmobiles. Since Speedcells are lithium iron batteries also how are you dealing with this issue?

Pulled from an earlier long winded post of mine found here:
http://www.snowestonline.com/forum/showthread.php?p=3064895#post3064895
I edited that response here to address your question-- feel free to click on the link to get a better idea of who I am and my professional bias.

...Lithium DOES have limitations in cold weather applications--as does lead acid (what the OEMs use now in their snowmobiles). The strategy that the OEMs use to overcome cold weather performance degradation is capacity. Most OEMs have a "performance envelope" of -30 to +30 degrees. This is why most OEMs batteries are 16 to 20 amp hour even though many people (SnoWesters) will tell you that a 7 amp hour battery will work just fine-- it will as long as it isn't too cold out or the sled was in a trailer or heated garage. Try and start a Nytro that has been outside for a week in -30 temperatures with a 7 amp hour battery and it will prove my point. As a technology platform, lithium can use the same strategy of excess capacity to overcome cold weather performance degradation. Even with excess capacity, the Lithium platform is still smaller and lighter than its lead acid equivalent due to the fact that lithium is more energy dense.

Not all lithium batteries are created equally. A battery's performance is dependent on the quality of cells inside. The cell manufacturers even have different levels of "quality" in the cells they offer. Why does this matter to you, the consumer/ end user? The cell quality typically determines two important factors when it comes to battery "performance"-- 1. starting power ( ability to overcome motor inertia and spin the motor fast enough to fire), 2. Longevity- lithium batteries are susceptible to overdischarge -- even more suseptible to lead acid-- if the individual cells are not balanced properly and one discharges more than the others in a start cycle, the battery can be rendered inoperable. At Speedcell, we use A-grade A123 cells because they are the most energy dense and have the highest quality. Many of our competitors claim to use A123 cells, and some of them do, but they are not the A-grade cells. The reason that I can make this claim is that A123 will not sell A-grade cells to a company that does not have a US government issued cage code. As I stated previously, Speedcell through its parent company Navitus, has a cage code-- 1VC84. Our products are built in our facility in Las Cruces, New Mexico. We supply battery systems to the DoE and the DoD. If you have a custom application or need, we can build a unique solution for you. Call our competitors and tell them that you need a custom battery built for size, layout, capacity, etc-- see what they say. It's real easy to determine who actually is a battery company versus a "battery company" (i.e. reseller of foreign products)
.....

Thanks,
Murph

This is why the answer to "what battery for my Pro?" Is never as straightforward to answer. It depends on your environment and what you consider acceptable as an end user for extreme cold weather protocols. I always try to ask someone as much as I can regarding typical ambient temps, if the sled is inside a heated environment (trailer or garage) or outside. Also elevation comes into play, or aftermarket heads, when it comes to the battery turning the motor against compression in extreme cold temps.

Feel free to give me a call if you still have more questions.

Murph
[831} 464. -3458

 

[mountainhorse]

There is a reason you can find cheap Chinese made Lithium batteries... they are inferior in quality...

What SpeedCell offers is that difference in quality... and an american company to boot.