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Post by Mike C on Nov 10, 2016 17:36:28 GMT -5
anybody ever try one of these? linkI'm looking for more acceleration and top speed.
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Post by Randy_R on Nov 11, 2016 11:16:41 GMT -5
You will not improve acceleration or top speed. The Polaris clutching keeps you at hp peak rpm (7800 or do I think)at full throttle already. All the new primary can do is give more rpm and noise. It might feel faster but the 850 is strong enough that you will not gain.
You may gain if the clutch can get you higher rpm if you put a tune in that allows more rpm. On rzrs there are some tuners that will allow 9500 rpm. That gives more power but also risk.
I'm not an expert so this is my opinion. If you want more power I really recommend buying a 1000.
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Post by Randy_R on Nov 11, 2016 11:20:11 GMT -5
There used to be a guy in the club that put lots of $ in a 650 Brute for power. He would have came out far better just buying a 750 Brute. After his mods his 650 would only go 40 miles on a tank.
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Post by Mike C on Nov 11, 2016 11:45:24 GMT -5
I was happy with stock tires, would go 84 mph all day but now I'm lucky to hit 70. tires must be twice as heavy as oem, made a huge difference after tire change. feels like clutch slips more now. tires are 1" wider than stock but are the same diameter.
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Post by Mike C on Nov 11, 2016 12:04:18 GMT -5
Final drive resistance (heavy/larger tires) affect cvt clutching severally. I will either need springs and weight kit or a cvt clutch such as this. just wondering if any1 had any personal experience.
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Post by Randy_R on Nov 11, 2016 16:46:18 GMT -5
Thats a huge top speed hit. Does 850 show RPMs? If so you could send Todd at Hunterworks an email with your RPMs at full throttle acceleration and at top speed. He would be able to tell you if clutching can help. It's likely that tighter spring can help with acceleration but I doubt as anything will help with top speed. 70mph sounds plenty fast to me. My 800 Can-am would do 78 and that was stupid fast for that wheelbase.
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Post by Mike C on Nov 11, 2016 16:53:58 GMT -5
they are hitting rev limiter on long wot runs with mph still climbing.
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Post by Mike C on Nov 11, 2016 17:29:21 GMT -5
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Post by Scott S on Nov 11, 2016 18:21:19 GMT -5
Mike, I put a Dalton kit in my 1000 before Utah trip. What it did exactly what Randy explain. With my HL having lower gearing I thought the 32" tires I put on would do fine but I finally noticed I was only hitting 7200-7300 rpm on full throttle. Once I put the Dalton kit in with correct weight setup my full throttle rpm hit 7650-7700 which according to Polaris is the sweet spot and man it took of like a raped ape. I'm kinda wondering if all the test runs I did on asphalt before the trip caused my tranny issues in Utah. It was actually leaving 2 burn marks on the street which is pretty hard to do with 32" tires.
Tweaking for altitude or tires changes is very simple and easy btw.
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Post by Randy_R on Nov 12, 2016 10:18:06 GMT -5
Two burn marks with 32s is wild. That means the belt was not grabbing until rpms were up. Thst definitely could be rough on tranny as well as entire drive line. It's kinda like putting in a 3500 rpm stall torque converter in a car. Hits hard but heck on drive line.
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Post by tylerr87 on Nov 12, 2016 11:06:19 GMT -5
He wants to keep up with a certain canned ham. Hehe
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Post by Scott S on Nov 12, 2016 13:14:53 GMT -5
Randy, I also install the lower engagement spring which now engages around 1850 rpms. The Dalton also comes with a better helix that's installed in the secondary, that plus the correct weights I believe it's just allowing it to almost instantly go up to 7600 rpms. But Todd did recommend to Not do test runs on pavement but that's all I had around my home that was long enough.
I do want that X3 though!!
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Post by Randy_R on Nov 12, 2016 20:13:41 GMT -5
Im wanting an X3. Maybe in 2018...
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