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Old 01-28-2011, 12:07 AM   #1 (permalink)
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Default Upgraded Springs

Been riding my new to me 600 Dragon for a few weeks now and noticed rear springs seem soft. I weight about 220 with all gear, and like to ride aggressively, but not big into huge jumps. Just rail line moguls, and lofting over hills.
I've been riding with the springs on highest notch and noticed last weekend that I was landing a little harder than I liked, so I bumped up the WE 2clicks, and that seemed to help on all but the biggest holes.
Have the stock .347"\80deg in the back and was wondering about going to the heavier .359's. There is a service note that the coils hit the pivot bolts unless proper shimming is done. I want to be able to run my springs in a lower than max setting if possible to allow extra for days when I really get carried away.
Are the .359's worth it or will they be to harsh? Were the factory springs known for going soft, or were they just soft to start with? Recommendations?
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Old 01-28-2011, 08:19 AM   #2 (permalink)
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Most guys running aggressively, and many that don't run so aggressively, will agree the .347's might be on the wimpy side. They also agree that a new set of .359's are kind of expensive? You might want to try a set of X-Click adjusting cams. They're alum. and have a 4th side that's MUCH taller than the stock cam. The springs you have may work fine with those? They're about half the price of one spring...

Forgot. The .359's are a bolt on. The .405's need the mod to keep from rubbing. Those are crazy stiff...
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Old 01-28-2011, 09:45 AM   #3 (permalink)
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Just replaced mine with .359's. Once the stock ones start to go they went real fast. I am around 220 and headed out for trip when the spring were weak and the trails were rough. The springs were flat by the time I got home, that was a brutal ride.

Ordered from Michigan at Parts Pit Stop, $63.65 each, better than $104 locally. Both places had to order in, but I saved $50 even with shipping. Luckily I was able to do it during the last thaw so I did not miss out on much riding.

I suggest you might want to order springs if you don't want to miss any riding as they will probably go sooner than later.
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Old 01-28-2011, 02:09 PM   #4 (permalink)
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The springs do rub and even bind if not put in right a guy a gave me these Polaris part# a couple year ago when i put in the heavy springs their from the old 440 suspension if i remember right anyway take out the old bolt put these in they work perfect and im a pretty big guy hope these will work for you......

This is a snow team tips from Polaris.
Quant Description Part Number
2 Shaft arm 5132972
2 Screw 7517917
2 Thrust washers 7555945
2 Lock washers 7552614
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Old 01-28-2011, 02:55 PM   #5 (permalink)
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Originally Posted by msd246 View Post
The springs do rub and even bind if not put in right a guy a gave me these Polaris part# a couple year ago when i put in the heavy springs their from the old 440 suspension if i remember right anyway take out the old bolt put these in they work perfect and im a pretty big guy hope these will work for you......

This is a snow team tips from Polaris.
Quant Description Part Number
2 Shaft arm 5132972
2 Screw 7517917
2 Thrust washers 7555945
2 Lock washers 7552614
The .359 Fusion springs (7043079-067/7043080-067) are a bolt on. They do not rub. I've done 4 '06's and an '07 without issue, and many others have as well. The .405's will rub without the kit.
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Old 01-28-2011, 03:41 PM   #6 (permalink)
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Quote:
Originally Posted by michahicks View Post
Most guys running aggressively, and many that don't run so aggressively, will agree the .347's might be on the wimpy side. They also agree that a new set of .359's are kind of expensive? You might want to try a set of X-Click adjusting cams. They're alum. and have a 4th side that's MUCH taller than the stock cam. The springs you have may work fine with those? They're about half the price of one spring...

Forgot. The .359's are a bolt on. The .405's need the mod to keep from rubbing. Those are crazy stiff...
Indeed. I'm 300# dressed, and those freakin things hardly sag at all with me on them. I should have went with the next lightest pair.....
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Old 01-29-2011, 01:28 AM   #7 (permalink)
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Thanks guys. Got a set of .359's today for $60pc. Worried I had wasted money when on .012" thicker, but you guys have made me feel better. Thanks for info on not needing any special install.
Now it's off to rebuild front shock. Found out when everything out for new upper wheel bearings and lubing everything that dampening is almost 0. More work Yippeeeee!
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Old 01-29-2011, 10:49 AM   #8 (permalink)
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These are the springs I'm running w/o any binding issues. I have these set on the low setting and are plenty stiff, but yet soft enough to give a good ride. The initial angle is where most of the strength comes from in these springs.

Part numbers
7042079-067 Spring, Torsion, LH, STD [.375/47 ]
7042080-067 Spring, Torsion, RH, STD [.375/47 ]

7041822-067 Heavy duty front track coil spring 225#
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Old 01-29-2011, 08:24 PM   #9 (permalink)
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Current Sled(s): 06 Fusion 600HO Dragon
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Those rear springs are exactly what I bought (Isn't it nice of Polaris to stamp the part# right on the spring leg). Don't know why they're called .375 though. They measure .359" on the mic. They already feel quite a bit stiffer than stock just sitting on floor. Find out tomorrow I guess!
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Old 01-30-2011, 03:56 PM   #10 (permalink)
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Quote:
Originally Posted by BRR_Dogger View Post
Those rear springs are exactly what I bought (Isn't it nice of Polaris to stamp the part# right on the spring leg). Don't know why they're called .375 though. They measure .359" on the mic. They already feel quite a bit stiffer than stock just sitting on floor. Find out tomorrow I guess!

Carefull....take another look at the entire number (7042 vs. 7043)...

Double take here too. The .375's aren't quite as popular.
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