rhino 450...machined sheave? OD weights??

Gtperformance · #1 (**permalink**) 05-09-2011, 08:45 AM

Hey guys,

Any 450 guys made any mods with real results?? looking to lower engine rpm's at 30 mph cruising speed. I see the OD weights do not come in 12gr.....Anyone who has REALLy tested these and running a 450, please point me in the right direction.

Thanks

GF

**s2k1** · #2 (**permalink**) 05-09-2011, 10:28 AM

Heavier primary clutch roller weights will lower your cruising RPM. However, they will also lower the RPM during all stages of acceleration and will make it accelerate at a slower rate.

dbestduner · #3 (**permalink**) 05-09-2011, 11:30 AM

Someone on here had a 450 no too long ago and he went with oD weights and had great results. go with 16, anything lower can crush..

RSRRhino · #4 (**permalink**) 05-09-2011, 08:27 PM

yep i put in the 16gr od's and got the blue secondary spring. i am very happy with them. top speed now 42+ and more power on low end also. now it runs like it's being pulled behind a chevy truck till bout 38-39 and is a little slower hitting top speed but not enough to bother me anyways. so in all i say do it and you will be surprised at difference

dbestduner · #5 (**permalink**) 05-09-2011, 08:41 PM

There i are! lol couldnt remember your name!

Gtperformance · #6 (**permalink**) 05-09-2011, 08:52 PM

Looks like utv inc on sells 14gr and 18gr ??

Thanks

dbestduner · #7 (**permalink**) 05-09-2011, 08:58 PM

Quote: Originally Posted by Gtperformance

Looks like utv inc on sells 14gr and 18gr ??

Thanks

Ya, they sold out of 16gr. Hot Rod has them, and so does Hunterowrks.com

the 14`s are too light, go 16.

Gtperformance · #8 (**permalink**) 05-09-2011, 09:21 PM

So are the OD weights better than a machined sheave? Do they start out at a higher setting losing bottom end? Benchmark says the heavier weights will slow acceleration??

Just trying to figure out what to buy....ready to do something just trying to make the right decision the first time.

Thanks

dbestduner · #9 (**permalink**) 05-09-2011, 09:35 PM

Over stock you wont lose enough bottom end to tell, they came out with a new cut of the weights so u dont lose any bottom. The lighter the weight the higher the RPM will be when it shifts into the next gear, if you go too light it will hurt you. I would go 16. The OD weights REACT faster than a machined sheave, and they are smoother in my opinion. Thats why hot rod sheave is great, it gives you ultimate low end with the OD top end and smooth no roller flop. If you hit him up he might be able to machine a 450 sheave next.

RSRRhino · #10 (**permalink**) 05-10-2011, 09:40 PM

yeah maybe he won't leave us 450 guys out

WV Hot Rod Rhino · #11 (**permalink**) 05-11-2011, 02:28 AM

Quote: Originally Posted by RSRRhino

yeah maybe he won't leave us 450 guys out

Ill check it out

xHotrodx · #12 (**permalink**) 05-11-2011, 03:41 AM

Count me in also.........I dont get it the 450 is like a Redheaded step child everyone wants to ignore..

Gtperformance · #13 (**permalink**) 05-11-2011, 05:25 AM

Well guys....Ordered some OD weights and going greaseless sliders as well.
Plotted it on GPS yesterday on 3 runs... It runs 34.3mph when it starts hitting the rev limiter. Will change out the weights and report back the change (next week) Good or bad we will see what happens.