Just noticed this about the 570, WTH? - Page 2 - Polaris ATV Forum
Polaris Sportsman 570 Discussions for the all new 2014+ Polaris Sportsman 570

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post #11 of 82 (permalink) Old 01-04-2017, 01:37 PM
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Locked Diff = no need for 2 calipers. Makes the machine lighter, fewer parts to maintain, and 0 loss in performance. I'm at a loss as to why you would like it less because of this...

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post #12 of 82 (permalink) Old 01-04-2017, 01:58 PM Thread Starter
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Quote:
Originally Posted by ThorsHammer View Post
Locked Diff = no need for 2 calipers. Makes the machine lighter, fewer parts to maintain, and 0 loss in performance. I'm at a loss as to why you would like it less because of this...


I guess since my Ranger had them I figured these should. 2 different animals I guess.


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post #13 of 82 (permalink) Old 01-04-2017, 02:05 PM
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Quote:
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Originally Posted by ThorsHammer View Post
Locked Diff = no need for 2 calipers. Makes the machine lighter, fewer parts to maintain, and 0 loss in performance. I'm at a loss as to why you would like it less because of this...


I guess since my Ranger had them I figured these should. 2 different animals I guess.


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Yea I'd say the ranger needed them as its probably 2 to 3x heavier.

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post #14 of 82 (permalink) Old 01-04-2017, 06:35 PM
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Nobody has mentioned engine braking. I have very rarely used my brakes on this quad and I've been riding through snowy mountains and let the engine take me down. One rear brake isn't a factor at all.
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post #15 of 82 (permalink) Old 01-05-2017, 01:28 AM
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Nobody has mentioned engine braking. I have very rarely used my brakes on this quad and I've been riding through snowy mountains and let the engine take me down. One rear brake isn't a factor at all.
X2 - I doubt I will ever have to replace brakes on my 850 because of wear.

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post #16 of 82 (permalink) Old 01-05-2017, 10:44 AM
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Originally Posted by SpyderX View Post
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Originally Posted by ThorsHammer View Post
Locked Diff = no need for 2 calipers. Makes the machine lighter, fewer parts to maintain, and 0 loss in performance. I'm at a loss as to why you would like it less because of this...


I guess since my Ranger had them I figured these should. 2 different animals I guess.


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The Ranger has turf mode. Turf mode is a totally different rear differential that has the ability to unlock the rear diff when Turf Mode is activated allowing the rear axle to act like an unlocked differential. in this situation, 2 calipers are needed otherwise, the one brake would pull the machine in that direction when it activates.

"There are no problems. There are only Solutions. It's your job to find the right one.

2007 Hawkeye 300 17HP of gutless glory
25" STI Black Diamond ATRs
Pure Polaris Deluxe front Brush guard
Pure Polaris hand guards
4" LED on the pod
8" LED light bar on the front bumper.
Tamarack Titan Luxury Lounger
Cabela's Chainsaw mount
Badlands 2500 lbs. winch w/remote and Kong winch saver.
Full Aluminum Skid plate and A-arm guards(custom built)
Pure Polaris Front rack extension
Quadworks Stage 1 power kit
  • K&N Highflow reusable filter
  • Quadworks highflow prefilter
  • Dynojet kit
2" rear spring spacers

Towable/equipment
Custom built road drag grader

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Rear bumper/brush guard
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post #17 of 82 (permalink) Old 01-05-2017, 10:48 AM
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Originally Posted by ThorsHammer View Post
Locked Diff = no need for 2 calipers. Makes the machine lighter, fewer parts to maintain, and 0 loss in performance. I'm at a loss as to why you would like it less because of this...


I guess since my Ranger had them I figured these should. 2 different animals I guess.


Sent from my iPhone using Tapatalk
Yea I'd say the ranger needed them as its probably 2 to 3x heavier.

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The Rangers dry are all less than 2x the weight of the 570 dry. This doesn't include the crew models.

However, they have two calipers because the ranger's all have turf mode.

"There are no problems. There are only Solutions. It's your job to find the right one.

2007 Hawkeye 300 17HP of gutless glory
25" STI Black Diamond ATRs
Pure Polaris Deluxe front Brush guard
Pure Polaris hand guards
4" LED on the pod
8" LED light bar on the front bumper.
Tamarack Titan Luxury Lounger
Cabela's Chainsaw mount
Badlands 2500 lbs. winch w/remote and Kong winch saver.
Full Aluminum Skid plate and A-arm guards(custom built)
Pure Polaris Front rack extension
Quadworks Stage 1 power kit
  • K&N Highflow reusable filter
  • Quadworks highflow prefilter
  • Dynojet kit
2" rear spring spacers

Towable/equipment
Custom built road drag grader

Future mods
Rear bumper/brush guard
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post #18 of 82 (permalink) Old 01-05-2017, 12:05 PM
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Both my 2005(400) and 2012(800) only have one rear brake..... as others have stated 1 rear is more then enough (as 70+% of all braking is done by the front brakes on all vehicles)!!

Stop looking for reasons.... like it and keep it or hate it and sell/trade it!! Easy enough!

Matthew "MustBeNice"

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post #19 of 82 (permalink) Old 01-05-2017, 12:47 PM
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Funny enough my 2009 Sportsman 850 XP had dual rear brakes. Then for 2010+ it had a single. I believe the 2-ups have twin rear brakes though.

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post #20 of 82 (permalink) Old 01-05-2017, 01:25 PM
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80% of the stopping power is on the front wheels. Especially once you apply brakes and start slowing down, it shifts all of the weight to the front. One brake is more than enough to lock BOTH of the rear wheels. What more do you want than locked? If you dont believe me try this -- get going about 15-20MPH -- use only the foot brake to engage only the rears. It will take a long time to stop. Try again with the hand-lever and you will be quickly stopped.

The brakes are not the limiting factor, the traction is.

Heck, even try the above experiment on pavement. Front brakes are what stop these machines.
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