Weight Comparions Between 850 Patriot and 800HO Axys

[diamonddave]

Forgive me if it's out there and has been discussed, but I haven't seen dry weight comparisons of the 2 sleds. I think for people on the fence between the 2 sleds, this is an important discussion.


Do we have the published weights from Polaris? It would be nice to have a chart to compare the differences.

Does anybody feel that the 850 will or does ride heavier?

The light weight of the Axys is one of the things that make it so great out of the box in comparison to BRP.

 

[XCaSSAULT]

I’ve only seen quotes on here saying new 850 is 8pounds heavier.
Someone correct me if wrong.
So 800 is 408 power to weight 2.59per horse (assuming 157hp)
New 850 416 power to weight 2.47per horse (assuming 168hp)

We’ll have to see what actual horse numbers are. I’m hearing 168 and even 172 but what will production maps be. 2010 800 was suppose to be 154hp but was 144.

If my 416lbs 168hp estimate is correct it be like an extra gallon of gas in the 800 to equal 850 weight.

 

[Latitude 62]

Polaris has added some light weight parts to the 850 that the 800 does not have. As an example, the shock springs on the 850 are at least 3 pounds lighter using a new, high tech wire. There are a few other little differences as well like shorter running boards with larger clean out areas and a different style of attachment that may also contribute. The 850 engine itself is therefore, at least 10 pounds heavier than the 800. Dry weights I saw for 155, 2.6 were 415 and 408 respectively.

 

[deschutes]

I am seeing some conflicting information, but I also have not really been paying attention.

I thought the 2019 800 was supposed to be getting the same improvements as the 850, less the engine?

If this is the case, the 800 would benefit from the sale lighter components as well.

Polaris has added some light weight parts to the 850 that the 800 does not have. As an example, the shock springs on the 850 are at least 3 pounds lighter using a new, high tech wire. There are a few other little differences as well like shorter running boards with larger clean out areas and a different style of attachment that may also contribute. The 850 engine itself is therefore, at least 10 pounds heavier than the 800. Dry weights I saw for 155, 2.6 were 415 and 408 respectively.

 

[MTsled3]

It's 7lbs heavier, 415 for the 155" 2.6" as stated above. Only the 850 gets the lightweight springs, different running boards, and fuse box. The 800(and 600) gets the new front end and sealed relays.

 

[89sandman]

What about weights for the 3 inch?

 

[Ratchit]

I’ve only seen quotes on here saying new 850 is 8pounds heavier.
Someone correct me if wrong.
So 800 is 408 power to weight 2.59per horse (assuming 157hp)
New 850 416 power to weight 2.47per horse (assuming 168hp)

We’ll have to see what actual horse numbers are. I’m hearing 168 and even 172 but what will production maps be. 2010 800 was suppose to be 154hp but was 144.

If my 416lbs 168hp estimate is correct it be like an extra gallon of gas in the 800 to equal 850 weight.

I like to figure it out hp per pound. I’d rather do it wet weights, but for comparison

Assuming 408 lbs, 152 hp at dtr
152hp/408lbs=0.372 hp/lbs

Assuming 850 is 168 hp and 416 lbs
168hp/416 lbs= 0.403 hp/lbs

Now take a Yamaha sidewinder for comparison that’s 600 lbs with 204 hp
204hp/600 lbs= 0.34 hp/lbs

 

[Timbre]

Here are some more "assumptions".

The 2016 & 2017 Axys are estimated to be at 150 - 155 hp, and come with 62 gm weights in the primary. When adding a SLP pipe and can, which is commonly known to add about 10 hp, we add 2 gms of weight to the clutch. Now, for comparison, the 850 (I hear) comes stock with 66 gm weights (4 gms more).

So, here are the assumptions . . . .If adding 2 gm = adding 10 hp, the 850 should be up about 20 hp stock. This should put it well over 170 hp. Add SLP pipe and can, (maybe another 10hp??) and this sled will be a beast at over 180 hp!!!

 

[St. Hellens rider]

Here are some more "assumptions".

The 2016 & 2017 Axys are estimated to be at 150 - 155 hp, and come with 62 gm weights in the primary. When adding a SLP pipe and can, which is commonly known to add about 10 hp, we add 2 gms of weight to the clutch. Now, for comparison, the 850 (I hear) comes stock with 66 gm weights (4 gms more).

So, here are the assumptions . . . .If adding 2 gm = adding 10 hp, the 850 should be up about 20 hp stock. This should put it well over 170 hp. Add SLP pipe and can, (maybe another 10hp??) and this sled will be a beast at over 180 hp!!!

850 is running a different belt so 4 grams of weight more doesn’t necessarily mean a 20 hp improvement. In fact Polaris says 9% more hp. So probably more like 14 hp. Regardless this sled should work extremely well. It will probably still out run a stage 3 slp 800 ho axys.

 

[iluv2fly]

I talked to Carl cycle and they said it beats there ported and piped 800 axys.

 

[sledhead_24_7]

Out of Polaris sales brochure

 

[Teth-Air]

HP is good, but guys you are completely disregarding torque. I bet this new motor is a beast for torque?? Torque holds rpm and pushes acceleration. Even a hot 800 that pushes close to the same hp will not be equivalent.

 

[1Mike900]

Teth is correct, an engine only makes torque @ given RPM.
If you convert an engine to cu.in. you can come up with a torque calculation. So a 840 cc is 51.266 cu.in. Basically today;s 2S engines make on avg. 2.25 ft/lbs. per cu.in.
So this should be roughly 115.4 ft. lbs. torque at about 200 rpm. below peak BHP. So one could assume 110 to 115 max. If this is the case 112 ftlb. @ 8050 rpm = 171.66 BHP. So formula = torque x RPM/5252 rpm. = BHP at that RPM. Since Polaris has not said what it actually makes, I would assume 110 would be a safe # = 168.60 BHP
Hope this helps
Mike

 

[Betterview]

850 is running a different belt so 4 grams of weight more doesn’t necessarily mean a 20 hp improvement. In fact Polaris says 9% more hp. So probably more like 14 hp. Regardless this sled should work extremely well. It will probably still out run a stage 3 slp 800 ho axys.

RPM's are a very big factor here. Generally 1 gram of weight on each cam arm is in the neighborhood of 100 rpm change. The new 850 peak operating rpm is at least 200 below the 800 HO. I would start with 2 grams heavier cam arms if the horse power were about equal. The advantage of peak power being at a lower rpm is big when clutching because being a bit heavy will not be as big an issue.

 

[revrider07]

The lower the Rpm is the more efficient the clutch is also.

 

[damx]

I thought the new 850 likes the 8200 ish rpm range ?

 

[tdblakes]

At the demo ride, we were told target 8250RPM +-200 RPM