prairie 360 primary and secondary springs

6657 Views 17 Replies 7 Participants Last post by tansmith2001, 16 d ago

coupedehille

Discussion Starter · Nov 10, 2009

I've got a 2006 prairie 360 with 26" 589's. I'd like to get a little more top end speed out of it. I know there are plenty of you guys who can suggest what primary and secondary springs I should try. right now I can almost hit mud holes in high, if that tells you how much I'd like to change the ratio. seems like I only hit about 30 mph top end. got a brand new $130 lifetime belt on it, so I know that's ok. I guess I need a weaker spring on the clutch so that it throws in at lower rpm? not sure about the secondary.

1 - 18 of 18 Posts

Jim

· #2 · Nov 10, 2009 (Edited)

Its a H/P issue on the 360 in low it will go where any will but it just dont have the h/p, The best spring is pink on primary and let the engine rev out a little better and this you will find bout as good as it gets until a piston and cam and pipe is added.
I want one to play with as I know there is a safe 15hp more in a piston cam setup with a mild pipe.
There is a lot of these units out there that the hp needs upped in a safe reliable manner as that is what that bike is about the non aggressive rider that wants a durable quad, its overkill for the Hp it puts out. Good sturdy machines but lack on horses.JH

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coupedehille

Discussion Starter · #3 · Nov 12, 2009

these bikes are freaking monsters. I can go anywhere with these 589's and locking diff. if it was a 700 it would be unstoppable.

I know it's not a hp issue, because the engine is screaming at top speed. it's got plenty of hp left for another 10 mph, so it's definitely the gearing. I had my tires pretty stiff with air pressure and speed wasn't an issue until I recently let some air out to get a softer ride and to not labor so hard in the sugar sand. I hate to go larger than 26" tires because of how hard it is on the suspension, but 27's would surely take care of this problem. I can live with it, but I know springs would make 'some' difference. I figure I need softer/lighter springs so that the clutch and the tranny pully are traveling all the way and thus giving the belt the most big-to-small ratio possible. is the pink primary spring lighter than the stock one?

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vtprairie

· #4 · Nov 12, 2009

I ran a pink primary and I also used Vforce weights in the clutch it didn't give me anymore top end but it rev a little quicker I noticed it when I plowed and such

Mikeyboy_esq

· #5 · Nov 12, 2009

coupledehille,

I've seen posts like your several times on the forums over the years. Some folks (like Olemanmoses) tried lots of things to make the P360 faster, but to no avail. In the end, these types of posts usually conclude the same way. The P360 has lots of great features and will usually do everything you need it to do...but its top-speed is slow compared to similar sized utility quads. None of the posts that I've read were successful in making the P360 significantly faster. If you want a faster quad, I suggest you buy a different quad. Sorry that I don't have better news for you.

Do a search on this and other forums (like Nyrocs) and you will see what I'm talking about is true.

Happy trails...

coupedehille

Discussion Starter · #6 · Nov 13, 2009

I figured as much. not a big deal. we take it slow on the trails and mainly play in mud and water. I won't bother if the gains are minimal since it pulls great for what I do just like it is. thanks for the help guys.

NovaKaw650

· #7 · Nov 13, 2009

VforceJohn doesn't think the engine would have the power for more top speed if the top speed mod was done to the primary clutch, but I would still like to see someone try it. I know the P360 will accelerate as fast as a 350 Honda, but seems to run out of gearing.

coupedehille

Discussion Starter · #8 · Nov 16, 2009 (Edited)

this thing does have power. it has more torque to turn the wheels in mud or pulling than a brand new big bear 400 that I got for my girlfriend. and I'm running 589's and she has the stock mudlites. but hers will hit 40 mph in fifth gear and mine's screaming at 30. like you say, this thing has the power, it just runs out of gearing. high gear should have been designed/geared with just a tad bit more top speed in mind. leave the donuts for low gear. I don't think you can squeeze any more out of the clutch and pulley. my clutch is going all the way in and the pulley is too.

NovaKaw650

· #9 · Nov 16, 2009

coupedehille said:
this thing does have power. it has more torque to turn the wheels in mud or pulling than a brand new big bear 400 that I got for my girlfriend. and I'm running 589's and she has the stock mudlites. but hers will hit 40 mph in fifth gear and mine's screaming at 30. like you say, this thing has the power, it just runs out of gearing. high gear should have been designed/geared with just a tad bit more top speed in mind. leave the donuts for low gear. I don't think you can squeeze any more out of the clutch and pulley. my clutch is going all the way in and the pulley is too.

The top speed clutch mod will allow the primary clutch to move closer together, thus making the gearing higher. It's generally good for another 5-10 mph on a V-twin.

coupedehille

Discussion Starter · #10 · Nov 17, 2009

are there any links or anything showing how this is accomplished? does the clutch just loosen up and slide on the shaft?

VFORCEJOHN

· #11 · Nov 17, 2009

I can get them to about 45-47 mph with the clutch mod, it jsut takes forever for them to get there. down hill you can get it going faster, but flats and uphill there is little to no change.

fuel mileage is greatly increaced, but they are efficent even in stock form.

I use 4 Vforce weights, they are 54 gram but make it rev higher. Dalton Blue primary spring wil get you the RPM's you are after. if you are running 26's you can try the EPI almond secondary spring for a little more low end backshift. it gets up and goes a little better when you are on and off the throttle

They just lack power. 12 rwhp isn't going to go really that far. even piped and jetted, they can barely get 14 rwhp.

John

NovaKaw650

· #12 · Nov 17, 2009

coupedehille said:
are there any links or anything showing how this is accomplished? does the clutch just loosen up and slide on the shaft?

There are many links on this site, check with VForceJohn; he does many of these mods.

coupedehille

Discussion Starter · #13 · Nov 18, 2009

eh, I live in florida and there aren't any hills anywhere I ride. I think I'm going to live with it. it pulls so well in mud and water, I'd hate to mess my low end pulling power up by trying to get a little more top speed. thanks for the feedback and tips though. you've alleviated my desire to try and get more out of it!

NovaKaw650

· #14 · Nov 18, 2009

coupedehille said:
eh, I live in florida and there aren't any hills anywhere I ride. I think I'm going to live with it. it pulls so well in mud and water, I'd hate to mess my low end pulling power up by trying to get a little more top speed. thanks for the feedback and tips though. you've alleviated my desire to try and get more out of it!

The top speed mod has absolutely no effect on low-end performance or acceleration. There are no downsides.

coupedehille

Discussion Starter · #15 · Nov 19, 2009

the thing is that 9 times out of 10 the only straight-a-ways I have to open it up on are rolling sugar-sand trails. and with 589's, power and tires probably have a lot to do with my speed issue. this mod sounds like a bunch of work for little to no results for what I'm doing. my bike goes faster than the people I ride with like to go. the results sound too iffy for me to feel the need to bother trying.

NovaKaw650

· #16 · Nov 19, 2009

coupedehille said:
I've got a 2006 prairie 360 with 26" 589's. I'd like to get a little more top end speed out of it. I know there are plenty of you guys who can suggest what primary and secondary springs I should try. right now I can almost hit mud holes in high, if that tells you how much I'd like to change the ratio. seems like I only hit about 30 mph top end. got a brand new $130 lifetime belt on it, so I know that's ok. I guess I need a weaker spring on the clutch so that it throws in at lower rpm? not sure about the secondary.

This was your original post. It sounds like you are looking for more top speed. We gave a possible solution with no downside to it. What more do you want?

coupedehille

Discussion Starter · #17 · Nov 20, 2009

what I read from the guy you referred me to was "I can get them to about 45-47 mph with the clutch mod, it jsut takes forever for them to get there. down hill you can get it going faster, but flats and uphill there is little to no change."

taking forever to get more top speed while going down hill for $150 weights and $40 worth of springs + a bunch of labor on my part seems a bit futile to me. "little to no change" for the terrain I ride on... why would anyone waste their time and money for little to no change?

I got what I wanted, an answer.

tansmith2001

· #18 · 16 d ago

vtprairie said:
I ran a pink primary and I also used Vforce weights in the clutch it didn't give me anymore top end but it rev a little quicker I noticed it when I plowed and such

Only makes it accelerate and switch gears quicker you'll actually loose top end with a softer spring you have to sacrifice acceleration to get top end

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