4 strokes
4 Srokes have a much broader powerband.
4 Srokes have a much broader powerband.
The thing I dont like bout the 4 strokers....
- Thread starter Himark
- Start date
If you call 'instant power' a steep climb in a dyno graph .....AFTER an engine has to work it's way into its powerband ---- you truly don't get it, and should probably Google - 'Idiot's Guide to Sled Performace' for some help figuring it out.
G
geno
New member
The Nytro MTX I drove was a dog at 10,000 ft, setup, was stock clutching. It won't be stock, in three weeks, when we try it again. It has nothing to do with the powerplant, it's all in the clutching.
My stock (for three more weeks) Apex was clutched very good, out of the box, now after 1500 miles, of 35 mile a day riding, it's bouncing off the rev limiter, under the exact same conditions.
My old RX1 was not even comparable, to throttle response and power to my Apex. I've never riden a Vector. Never riden a Phazer.
I've only riden a couple of good, hard hitting 2 strokes, that have better low end "snap" than my Apex. Both of those, were NOT stock clutching.
FWIW- the one sled was an 800 rmk, setup by indydan, the other was a 700 summit, setup by bigjohn
My stock (for three more weeks) Apex was clutched very good, out of the box, now after 1500 miles, of 35 mile a day riding, it's bouncing off the rev limiter, under the exact same conditions.
My old RX1 was not even comparable, to throttle response and power to my Apex. I've never riden a Vector. Never riden a Phazer.
I've only riden a couple of good, hard hitting 2 strokes, that have better low end "snap" than my Apex. Both of those, were NOT stock clutching.
FWIW- the one sled was an 800 rmk, setup by indydan, the other was a 700 summit, setup by bigjohn
heres the link I googled for yah so pay the dude 20 bux for access than you can learn all you need to know and STFU.
http://www.dynotechresearch.com/techarticles.asp#
http://www.dynotechresearch.com/techarticles.asp#
Gene; thats because you left them stock. My RX-1 pre SC hit hard but, I had the after market exhaust; 50 lbs of weight removed and the Holtzman Engineering Red CV carb springs. Those springs definately let it react quicker than the stockers plus increased the RPMs on top.
As for Himark's comments; I have ridden many two strokes and none have out accelerated the RX-1 (pre-SC kit). These sleds include the '05 M-7, '04 RMK 800, '04 Rev 800 '03, Viper Mtn, '04 900 MC, "Puddytat" (the LW MC that Janell Painter rides) and the wife's '05 RMK.
Now for ones I have raced (these are all after the SC of course); I raced gettnunstucks 800 Rev (geno has that video on putfile) Q-dogs M-7 (with and without N2O) and the "Puddytat". The only sled to out accelerate me was Q-Dogs when he used the Laughing Gas. Then it only did it for about 20'. BTW I'm willing to race anybody for the fun of it just to see how other sleds perform.
Jim
Himark,
4strokes have an amazing powerband!!! I think better than most 2smokes!!! But I'm not gonna be an azz about it like some people!!! Im just gonna give you my honest opinion!!! We need to go to the snowies sometime in January!!!
4strokes have an amazing powerband!!! I think better than most 2smokes!!! But I'm not gonna be an azz about it like some people!!! Im just gonna give you my honest opinion!!! We need to go to the snowies sometime in January!!!
heck yeah I am up for that.. Just PM me when you are going. I am heading out there next weeked also if anybody else is out there shoot me a PM and i will check out your ride. tks...
G
geno
New member
Jimbo, I'm anxious to try yours again, with some fresh fuel. 
Rob is riding his Nytro MTX around here, (lots of snow) on the tail. He said it runs up to 9400. So we have some ideas for clutching, for Cooke. We think it will be harder on fuel though, so probably carry a gallon or so, of gas.
Rob is riding his Nytro MTX around here, (lots of snow) on the tail. He said it runs up to 9400. So we have some ideas for clutching, for Cooke. We think it will be harder on fuel though, so probably carry a gallon or so, of gas.Nytro
The Nytro is in the 700 class.... The HP is in the the low to upper 130's. I rode the proto last spring during a big pounding of fresh snow at 9k-11k feet. I was switching back and forth between an 800 2 stroke and the nytro both stock. I liked the way the ntyro handled, it was smooth. It felt under powered to me. JHMO
The Nytro is in the 700 class.... The HP is in the the low to upper 130's. I rode the proto last spring during a big pounding of fresh snow at 9k-11k feet. I was switching back and forth between an 800 2 stroke and the nytro both stock. I liked the way the ntyro handled, it was smooth. It felt under powered to me. JHMO
I
Insaneboltrounder/sjohns
Well-known member
Wow its gettin deep in here . Some you dudes riding those nice 130 hp sleds need a reality check.
. Some you dudes riding those nice 130 hp sleds need a reality check.
J
johnny be bad
Well-known member
thats funny i raced one on sunday and guess what? he looked at a lot of xp tail light. keep dreaming.Yesterday I had the opportunity to ride with three guys that have a variety of interests... 2 have the new dragons and one has the new XP rev ....
I rode all of them and have to say my stock 2007 Apex is bar none a far better power plant with snappier throttle and pull all the way through the power grid...
In fact we had the opportunity to run neck and neck several times and short of spinning a few times on launch due to the instant power to the ground I can achieve that they cannot.... I chewed them up from beginning to end period.
Funny part is... im still stock and they all have cans, reeds and other mods.
2 strokes? no thanks.
T
Twisted Boost
ACCOUNT CLOSED
This is nucking futs, you ride what you ride! If you like your sled then thats awesome, if you dont buy a yamaha then you will
G
geno
New member
Whats this thread about again ? How to change a crank on a 900 Polaris ?
nobody changes cranks in 900's, too many holdovers. Buy another. Cheaper by the dozen.
D
DARKO
Well-known member
nobody changes cranks in 900's, too many holdovers. Buy another. Cheaper by the dozen.
LOL. Good point
The only thing that instant throttle responsive gives you is the ability to fug up the trail with your little brap brap brap ( so responsive ) and ruin the ride home for us. Atleast when we squash it leaves a nice small smooth hill to ride over btw my sled has the spool up time of a jet engine starting up, i have to spot the mogul 3 km's ahead if i wanna lift the skis .
btw my sled has the spool up time of a jet engine starting up, i have to spot the mogul 3 km's ahead if i wanna lift the skis .HighonBoost we can fix that 3 km thing toss a mid mount header on it
Atleast when we squash it leaves a nice small smooth hill to ride over
The problem is.......... on the other side of your smooth little hill that I have to ride over, there's a fug'n trench 3 km's long because you wanted to jump that mogul
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