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Motha Russia
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Discussion Starter · #1 ·


Four years after Yamaha introduced the RX-1 as the first competitive four stoke machine in the snowmobile market, they released the all new Nytro for 2008.
Although Yamaha’s 4-stroke assault on the snowmobile industry has been a long and hard battle, the Nytro marks a big turning point for 4-stroke snowmobiles because it is the first 4-stroke sled that has a power to weight ratio that can compete with the 2 strokes. Yamaha has built some excellent 4 strokes in the past few years but they did require a lot of help from the aftermarket to make them competitive in the mountains.
In our eyes what makes the Nytro such a big deal is that right out of the crate it is light enough and has enough power to be a good mountain machine.
Rider Dusty Witherrite - Photo by Pattie Waters​
The Phazer that was released last season really opened our eyes to the direction that Yamaha was pushing the snowmobile industry. But although the Phazer is extremely fun to ride, it is more directed at new riders to the sport than to the average mountain rider.
Make no mistake, we absolutely applaud Yamaha for building a machine to bring new riders into the sport because aside from more snowfall there is nothing the industry needs more than fresh blood.
Basically Yamaha took the successful FX chassis from the Phazer and merged in an all new 1050cc triple producing a sled they could market to riders in all disciplines of snowmobiling and competing in the 130hp class.
So how competitive is the Nytro? Well Robbie Malinoski's win in WPSA snow cross on a prototype Nytro should begin to answer that question. Robbie and the Boss Yamaha team made history in Brainerd Minnesota when the Nytro became the first 4-stroke machine to ever win a WPSA National.
Rider Stephen Clark - Photo by Pattie Waters​
Arriving at Snow Shoot '08, there was no sled we were more excited to ride than Yamaha’s new Nytro, but thanks to Mother Nature we got some of the worst snow of the weekend during our Yamaha ride. This was very disappointing because it hindered us giving the Yamaha’s the thorough testing that we had planned.
Nevertheless we gave it our best attempt and we were immediately impressed with the responsive power of the Nytro. The triple has excellent low-end torque but unlike the Phazer’s engine that falls flat at higher RPMs, the Nytro pulls really hard all the way to the redline. The EFI system provides power any time you need it and with enough grunt to push the sled where it needs to go. The 130hp Nytro engine has a new Engine Braking Reduction System (EBRS) feature that gives the rider more of a “coast” feeling when the throttle is released. The EBRS does a good job of taking away the harsh engine braking characteristics of a 4-stroke engine.
Rider Mike Witherrite - Photo by Pattie Waters​
Four strokes are inherently heavier than their two-stroke counterparts and the Nytro is no different, but at 520lbs (FX Nytro RTX) it is only 26lbs heavier than a Polaris 700 Switchback. Honestly we hardly noticed the extra weight of the Nytro on our test, the excellent ergonomics and riding position definitely helps to make the machine feel lighter than it is. The FX chassis used on the Nytro utilizes a lightweight CF die-cast frame that moves the engine down and back towards the tunnel.
As debuted last year on the Phazer, the Nytro uses a integrated chaincase with a magnesium cover. The lightweight FX chassis coupled with an over-the-engine steering system makes for a very good handling machine. The handling of the sled is an excellent compromise between the responsive feel of the Phazer and the planted stable feel of an Apex. The apple doesn’t fall far from the tree and you can definitely tell that the Nytro uses a very similar chassis to the Phazer but the chassis handles more aggressively than the Phazer and responds well to rider input.
Photo by Stephen Clark​
All '08 Yamaha’s uses a new simplified naming system that easily shows the horsepower and class of machine. Each model is assigned a horsepower class; for example Apex 150hp, Nytro 130hp, Vector 120hp, and Phazer 80hp. Each model is also assigned a suffix designating its intended riding style. For example all rough trail models get the RTX badge, while mountain machines get MTX, and trail versatility machines are badged as LTX. The differences between RTX, LTX, and MTX models are limited to suspension systems and track lengths.
The Nytro RTX machine we tested at Snowshoot was equipped with Fox float suspension on the front and a Dual Shock Pro rear suspension system, and the set-up did an excellent job of soaking up all the impacts we could find. While the rear suspension could have been set-up slightly firmer for our riding style, the front did a good job of soaking up the bumps while still cornering flat on the trails.
Photo by Stephen Clark​
All in all we were impressed with Yamaha’s line up of sleds for 2008. While the Apex, Phazer, and Vector models received minor updates, the Nytro is an all new machine that brings a lot of innovative technology to the snowmobile market.
While the Nytro is not the lightest and most powerful machine available in 2008 it definitely has more technological features than any of the other machines, and these are the type of features that will allow us to continue to ride snowmobiles long after the environmentalists put an end to the production of oil-burning 2-strokes.
It is good to see four stroke machines now being able to compete with the 2-strokes. Good job Yamaha and long live the 4-stroke.

 

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Motha Russia
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Discussion Starter · #2 ·
i know JR is not to crazy about this sled as I'm, but JR a turbo system will fix that power to weight ratio no problems :)
 

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Very nice. Now that I'm back in a climate that actually has snowfall, I can get back into the sled market. Yamaha's snowmobile line is definitely on the top of my list.
 

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7c Forever
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i know JR is not to crazy about this sled as I'm, but JR a turbo system will fix that power to weight ratio no problems :)
oh it can, it can fix the ratio forsure, but for what it costs you're into a custom motor for one of the 2-strokes, and that's a whole different world again.

I do have a lot of respect for the mountain line tho, particularly the apex mountain, best track on the market by far, and with a turbo it's very capable of rocking and rolling, that's an application that really really suits it.
 

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7c Forever
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Still the best looking sled of the bunch :fact


:)
well that's something that's very subjective.

what isn't I guess tho.


To me, the Vmax 4 is still one of the best looking sleds of all time. looked like it was designed in a wind tunnel and 100% meant business.
 

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Motha Russia
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Discussion Starter · #7 ·
The first snow fall was yesterday, this sled is looking better and better :)
 

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...The 130hp Nytro engine has a new Engine Braking Reduction System (EBRS) feature that gives the rider more of a “coast” feeling when the throttle is released. The EBRS does a good job of taking away the harsh engine braking characteristics of a 4-stroke engine...
This is funny... :lol

I'm sure Jr finds it funny also... :crash
 

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7c Forever
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well I think they could have done it easily with clutch calibration for a lot cheaper, the same way everyone has been doing it since the 1920's.

It would be cool if they made it adjustable on the fly tho, then you could adjust it independantly of your upshift. A lot of people really like the engine braking tho, it was a big selling characteristic of the original RX-1 actually.
 

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I got to buy mine this weekend, big decision, Nytro RTX or Apex GT...... :storm:dunno:headdesk


The Nytro is slightly faster out of the hole but after 85 mph the Apex is flying by like a freight train.

Apex is a 115 mph + machine

Nytro is only good for 100mph. (that's what is bugging me) I hate loosing lake races.

Nytro has better suspension, is lighter and can do big jumps and powder. But there's zero wind protection on it and the gas tank is very small.


Jesus, i need some Advil again.....:confused:storm
 

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7c Forever
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my advice would be to go with the Nytro.

You'll be losing lake races either way, the other manufacturers have brought some pretty big guns to that fight. The Nytro is good at the job that it's designed for, it's actually a fairly effective rough trail package.
 

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my advice would be to go with the Nytro.

You'll be losing lake races either way, the other manufacturers have brought some pretty big guns to that fight. The Nytro is good at the job that it's designed for, it's actually a fairly effective rough trail package.
I still don't know wich one i'll buy. But i don't know wich machine you have in mind saying that other manufacturers brought some big guns. Here, the only sled who can beat an Apex GT is a very well setup Mach Z, and there's no Mach Z in 2008. From the owners comments and magazines tests the XP 800 is a big deception, not faster than the old MXZ and there's already many recalls and blown motors. The F1000 is not there at all, it's slower than the old F7, and Polaris is not in that game at all.

I tell you, i went to many lake races, it's hard to beat an Apex. Only a good Mach Z can and a well setup F7 is close.

LMAO! I'll admit why i don't know what to buy, i want an Nytro RTX, but 3 of friends have 06 Mach Z......:lol :mrgreen
 

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7c Forever
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well if you look at grass results, the apex is competative, but not dominant in the 600 class. That doesn't reflect up top speed, but I'd put good money that a cheaply set-up Rev800 will have more than an apex has to offer.

F1000 isn't really geared to run that range, but same thing as the rev, a $40 gear and the apex is likely to be in deep deep trouble. You're right tho, the old F7's are retarded fast. Which is another thing to worry about.

Also don't forget about the old triples, XCR, Thundercat, SRX, and the old Mach800's can all deliver a nasty nasty shock to the newer stuff on a flat trail or a lake, particularly now that they're old enough that the aftermarket is mature and developed.

I mean really... 115mph on the lake in this day and age isn't (or shouldn't be) anything special. around 2000 every manufacturer had a machine that'd break 100mph in the 1/4, on snow, unstudded, with room to spare. Infact I'm fairly certain even at that time, most had machines capable of 120ish.

The new stuff hasn't gotten faster (in my eyes anyways) it's just got better suspension.
 
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