Well I pulled the trigger!

[RW06GT]

125 HP? are you joking? Anyone who knows the Nytro motor knows it comes in around 135-138. Idk about anyone else but id pay for the Viper n not get the turbo,not everyone wants 250 hp. I for one would rather have about 150ish HP because I don't lake race mostly rough trail. i want 0-60 mph which is the Nyto n now the Viper very well. Why would ppl say its so unbelievable the Viper is faster then the Nytro same motor and from all accounts its like 20 lbs lighter

Its 135 with a non restrictive exhaust.

Hmmmm, I thought you were in finance? When did you have time for the engineering degree? :lol:

Until this sled is on a dyno, everyone is just guessing.

I for one am ready to trade my xf turbo(unmodded) for a viper ltx/xtx and will happily add a turbo just to get away from that crappy sounding twin. I've read enough about Yamaha's intended changes to give this sled a shot. I always have my Attak or wifes xr as a backup.

 

[jtssrx]

125 HP? are you joking? Anyone who knows the Nytro motor knows it comes in around 135-138. Idk about anyone else but id pay for the Viper n not get the turbo,not everyone wants 250 hp. I for one would rather have about 150ish HP because I don't lake race mostly rough trail. i want 0-60 mph which is the Nyto n now the Viper very well. Why would ppl say its so unbelievable the Viper is faster then the Nytro same motor and from all accounts its like 20 lbs lighter

Its 135 with a non restrictive exhaust.

Hmmmm, I thought you were in finance? When did you have time for the engineering degree? :lol:

Until this sled is on a dyno, everyone is just guessing.

I for one am ready to trade my xf turbo(unmodded) for a viper ltx/xtx and will happily add a turbo just to get away from that crappy sounding twin. I've read enough about Yamaha's intended changes to give this sled a shot. I always have my Attak or wifes xr as a backup.

First off I've been told it doesn't run with the Nytro. That was Yamaha's goal "make it run with the Nytro". Second I know lots about motors and exhausts and a restrictive exhaust robs power. Period end of story.

 

[2008 Nytro RTX]

125 HP? are you joking? Anyone who knows the Nytro motor knows it comes in around 135-138. Idk about anyone else but id pay for the Viper n not get the turbo,not everyone wants 250 hp. I for one would rather have about 150ish HP because I don't lake race mostly rough trail. i want 0-60 mph which is the Nyto n now the Viper very well. Why would ppl say its so unbelievable the Viper is faster then the Nytro same motor and from all accounts its like 20 lbs lighter

Its 135 with a non restrictive exhaust.

Hmmmm, I thought you were in finance? When did you have time for the engineering degree? :lol:

Until this sled is on a dyno, everyone is just guessing.

I for one am ready to trade my xf turbo(unmodded) for a viper ltx/xtx and will happily add a turbo just to get away from that crappy sounding twin. I've read enough about Yamaha's intended changes to give this sled a shot. I always have my Attak or wifes xr as a backup.

Nope I don't but I read some #*$&@ from people who know their #*$&@. everyone knows the Nytro comes in @ more then 130 deff not no 125. IMO the Viper would be faster not saying it is deff forsure but it is lighter and I don't think the exhaust will cut much HP dow. But if it did then Yamaha must think it will make it handle n corner much better then the rear if its willing to risk decent amount of HP

 

[Jamie Gelting]

First off I've been told it doesn't run with the Nytro. That was Yamaha's goal "make it run with the Nytro". Second I know lots about motors and exhausts and a restrictive exhaust robs power. Period end of story.[/quote]


I agree the exhaust could be restrictive after the collector, however it is probably not as restrictive as the muffler will be on the new Viper or on in the past Nytros. The most important part of the exhaust is from the engine to the collector including the collector. Once it is past the exit of the collector it is important but not near as important before it. The restriction will be the muffler not the smooth 180 degree bend after the collector ( if the bend is sized correctly ). It will be interesting to see dyno numbers and power curves with this new setup.

Jamie

 

[RW06GT]

First off I've been told it doesn't run with the Nytro. That was Yamaha's goal "make it run with the Nytro". Second I know lots about motors and exhausts and a restrictive exhaust robs power. Period end of story.

Wow - you can just look at an exhaust and can tell it's restrictive. I wish my engineering degree was THAT good.

Reality = Speculation. Nothing more.

I get you had problems with your procross. I haven't with mine but can see it wearing out quickly and Im done with it after two years. Not saying the Viper is going to be a high mile/no worries sled like my attak but I'll give it a year or two. Hopefully a new rider forward Apex comes in that time, I just love that motor.

 

[yukon yamaha]

Even if the exhaust is a little congested look at all the room to have some one like excell or hindle improve on the design and get some real flow! I like the nytro motor and have built myself up a very strong one and cant wait to do it again in this chassis. Let yamaha worry about emissions ect and the aftermarket get rid of it all and build some power.

 

[jtssrx]

First off I've been told it doesn't run with the Nytro. That was Yamaha's goal "make it run with the Nytro". Second I know lots about motors and exhausts and a restrictive exhaust robs power. Period end of story.

Wow - you can just look at an exhaust and can tell it's restrictive. I wish my engineering degree was THAT good.

Reality = Speculation. Nothing more.

I get you had problems with your procross. I haven't with mine but can see it wearing out quickly and Im done with it after two years. Not saying the Viper is going to be a high mile/no worries sled like my attak but I'll give it a year or two. Hopefully a new rider forward Apex comes in that time, I just love that motor.

Have you ever seen exhaust systems dynoed? Strait pipes make the most power. When you start putting bends in them they lose a lot of power. I've seen it on the dyno with my own eyes. That's why a good exhaust cost big bucks.

 

[Nytro40th]

Have you ever seen performance headers that create more power, lots of bends. As long as the exhaust is free flowing and has mandrel bends will not necessarily decrease power.

 

[Mighty]

The Viper is Faster than the Nytro, start to finish

 

[09nytro]

Have you ever seen performance headers that create more power, lots of bends. As long as the exhaust is free flowing and has mandrel bends will not necessarily decrease power.

That's right..... ........

 

[2008 Nytro RTX]

WHat are mandrel bends?

 

[Nytro40th]

A mandrel is drawn through the inside of the exhaust pipe to form curves, this keeps the outer walls of the pipe from crimping down in tight bends which can affect the flow of exhaust gases and decrease power. Mandrel bends are the bend of choice when performance exhausts are designed or fabricated.

 

[Mighty]

WHat are mandrel bends?

Mandrel bending, as opposed to standard bending techniques, do not crush the pipe during the bending process. Therefore, the inside surface diameter is not lessened or closed off, which can create back pressure. Mandrel bending ensures a complete, unrestricted flow with no serrations or metal deformity. Mandrel bending increases flow in systems that require numerous sharp bends and custom patterns.

 

[2008 Nytro RTX]

So even if its bent it will flow nicely thus not dropping power off to much? I can't wait to see the very first race between these two sleds and then then the next most exciting to watch would be the Doo 1200 n the ZR 7000

 

[Nytro40th]

WHat are mandrel bends?

Mandrel bending, as opposed to standard bending techniques, do not crush the pipe during the bending process. Therefore, the inside surface diameter is not lessened or closed off, which can create back pressure. Mandrel bending ensures a complete, unrestricted flow with no serrations or metal deformity. Mandrel bending increases flow in systems that require numerous sharp bends and custom patterns.

Ah even better example than mine