850 walk through with Polaris engineer

[RMK-King]

Louie from Powermods made a nice little video showing the 850 at the snow show, thought some of you might be interested in seeing it.

https://youtu.be/5BggbBdvuF0

<iframe width="560" height="315" src="https://www.youtube.com/embed/5BggbBdvuF0" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen></iframe>

 

[akpowderhound]

Awesome video that confirmed many comments made on the internet
Thanks

 

[Daag44]

Awesome video that confirmed many comments made on the internet
Thanks

Example?

 

[revrider07]

Monitoring fuel temp is huge for tuning.

 

[Teth-Air]

I wonder how many 800's had problem with varying fuel pressures? Must have been some kind of an issue if now there are pressure and temperature sensors. Maybe explained some of the low RPM issues of the past?

 

[catnuts]

anyone know if cooling system will be better than the 800's

 

[Killer Time Racing]

anyone know if cooling system will be better than the 800's

Better than 100 VS 130 ??? Like 2018 VS 11-17

Troll much ?

 

[snowmobiler]

copied skidoos single rings.LOL

 

[willjogervais]

copied skidoos single rings.LOL

I know, right?! They also stole their dual piston design, added a single pipe, and what really gets me is they put two skis on the front of it, just like the skidoo.... Damn polaris, come up with your own ideas!!

 

[Ratchit]

copied skidoos single rings.LOL

Good thing polaris used a different bore/stroke with the single ring design for less inertia then the doo 850 with light weight pork chop crank tho
Doo copied fusion bore/stroke with bore just a slight difference, hmmmm

 

[BeartoothBaron]

Man, guess I've been hallucinating, because I could have sworn that the Fuji 440 I've been tinkering on had single-ring pistons. But it was built in 1980, and the Doo 850 has only been available to copy for a couple years, so apparently that's not possible...

 

[FriscoProx]

Seemed strange he said the 850 was clutched for same rpm's as 800, 8250-8300.

 

[goridedoo]

Its gonna be okay everyone... snowmobiler was just joking around... like always

 

[greasemonkey3406]

Its gonna be okay everyone... snowmobiler was just joking around... like always

You mean there are people that take him serious? lol

 

[off trail mike]

Seemed strange he said the 850 was clutched for same as 800, 8250-8300.

Same rev's but guaranteed different clutch weight with bigger HP.

Still interesting on same revs...I was watching BMP do pulls on the 840 with max torque at 8000/8050 RPM and HP at 8100 with a few different pipe heat numbers. Almost seems they are clutching on the high side, but I likely longer pulls and hotter pipe would definitely move the rev's higher

https://www.youtube.com/watch?v=E3hLkQ-Ezks

Time will tell.

OTM

 

[pinko]

Hmm I have one with estart coming which I will be removing. Wonder if I need that block off plate?

Sent from my SM-G960W using Tapatalk

 

[sno*jet]

anyone know if cooling system will be better than the 800's

from the vid- "moved the thermostat off the motor for improved durability, right? right."

 

[snowmobiler]

Hmm I have one with estart coming which I will be removing. Wonder if I need that block off plate?

Sent from my SM-G960W using Tapatalk

heres another look at the bendix holder.

https://www.youtube.com/watch?v=a3ze3Wj-j1c

 

[snowmobiler]

https://www.youtube.com/watch?v=xvgg6Kq9zUU

 

[Dazzler]

copied skidoos single rings.LOL

The 800 Dragon had single ring pistons back in 2008.