Well, it's a well known fact that the OEM Maverick tracks on Yammi's are junk.
I figured as long as I was going to tear every thing apart, I might as well do it up right. Stay tuned to this thread to see the results...
I will be stretching a MTX Phazer to 153" with OFT Racing rail x-stensions, installing a 153 x 14 x 2.5" Camo Extreme (custom cut by OFT Racing), adding Nytro 3.00 pitch drivers (including the extros), and installing 8" OFT Racing billet wheels on the rear axle.
I will be dropping a pound or two off the skid as well.
Here is the project sled and the goods... It's an "oh nine" Phizzer MTX...
I figured as long as I was going to tear every thing apart, I might as well do it up right. Stay tuned to this thread to see the results...
I will be stretching a MTX Phazer to 153" with OFT Racing rail x-stensions, installing a 153 x 14 x 2.5" Camo Extreme (custom cut by OFT Racing), adding Nytro 3.00 pitch drivers (including the extros), and installing 8" OFT Racing billet wheels on the rear axle.
I will be dropping a pound or two off the skid as well.
Here is the project sled and the goods... It's an "oh nine" Phizzer MTX...
QUADSCRIB
Expert
NICE LOOKIN GOODS!! 
sobfrogg
TY 4 Stroke Guru
Nice looking parts 
How bout some BOOST
How bout some BOOST
sonds
Lifetime Member
- Joined
- Oct 7, 2008
- Messages
- 383
- Location
- Golden Valley MN
- Website
- ductworksmn.com
- Country
- USA
- Snowmobile
- 08 T-Nytro
Moto, looks like sled ops golden valley might need to send some longer hyfax 
sonds
sonds
Already installed! Customer service from OFT Racing is second to none!
snippe
Newbie
MotoPsycho
More pictures please...
More pictures please...
alright, a few more pics...
First of all, I urge all Phizzer owners to drain the chaincase and remove the cover to check for water. This sled has less than 200 miles on it, and when I drained it I got a couple of ounces of water from the case. The water has also started to corrode the chaincase cover as seen in the first pic below...
First of all, I urge all Phizzer owners to drain the chaincase and remove the cover to check for water. This sled has less than 200 miles on it, and when I drained it I got a couple of ounces of water from the case. The water has also started to corrode the chaincase cover as seen in the first pic below...
Got some more Japanese goodies to install...
I decided on a 17/46 gearset. The Nytro drivers are about 4% larger than the Phizzer drivers, which RAISES the gear ratio. I wanted to LOWER the ratio by 0.1 to 0.2, so that gave me either a 45 or 46 bottom gear choice. I hate trails, and avoid them whenever possible. I went with the lowest option, and that requires the longer chain as well.
If I run into RPM issues, it can be ironed out with some weight in the primary.
I also decided to go with the 2500 torsion springs. You can see the difference in size and twist in the pics below:
I decided on a 17/46 gearset. The Nytro drivers are about 4% larger than the Phizzer drivers, which RAISES the gear ratio. I wanted to LOWER the ratio by 0.1 to 0.2, so that gave me either a 45 or 46 bottom gear choice. I hate trails, and avoid them whenever possible. I went with the lowest option, and that requires the longer chain as well.
If I run into RPM issues, it can be ironed out with some weight in the primary.
I also decided to go with the 2500 torsion springs. You can see the difference in size and twist in the pics below:
Alright, final installment of the Phizzer stretch.
Here are the Nytro drivers/extro's installed
There is a fair amount of room between the extro's and the rail tips... no worries
Plenty of room for the 2 1/4" lugs as well... I think you could run 3"; even with the larger Nytro drivers
Here, you can see the difference in gears... I think she'll do okay with the 56...
Believe it or not, you can fit 14 5/8" of track under the Phazer... It requires A LOT of cursing, beer, perfect driver alignment, and custom fitment; but it WILL work!
... AND VOLIA! Another "Over the top" build from OFT Racing
BEFORE:
AFTER:
Here are the Nytro drivers/extro's installed
There is a fair amount of room between the extro's and the rail tips... no worries
Plenty of room for the 2 1/4" lugs as well... I think you could run 3"; even with the larger Nytro drivers
Here, you can see the difference in gears... I think she'll do okay with the 56...
Believe it or not, you can fit 14 5/8" of track under the Phazer... It requires A LOT of cursing, beer, perfect driver alignment, and custom fitment; but it WILL work!
... AND VOLIA! Another "Over the top" build from OFT Racing
BEFORE:
AFTER:
Kingsandman
Veteran
Please don't take this as negative, but did you shorten the rails? I've done three of these now using Nytro drivers and the first one was the learning experience. Unless you shorten the rails, move the skid back, or shave the plastic caps and driver tips, THEY WILL HIT! Believe me, it would happen when the suspension cycled and it was violent! The first one we shaved the plastic caps untill the indentations were gone, then spun the shaft in the lathe and took a 1/4" off the tips of the drivers. Now we just pull the caps off, cut them straight across, cut one inch off the rails, reinstall the caps and they'll now but up against the rubber suspension stopper. Haven't had any issues with the rails hooking the track due to the size of the drivers and the nature of the extroverts. Again, I'm not bashing, but I didn't think they'd hit and they do. Nick at Vernon Motorsports and Grant at Nicola Motorsports both had the same problem with the same results. One was an instant destruction of the drive shaft and the bulkhead when the shaft stopped dead impaling the rail tips over some whoops. Just trying to helpMotoPsycho said:There is a fair amount of room between the extro's and the rail tips... no worries
P.S. I have all three together right now, but could stick my camera in there and take a picture of the rail tips if you like, but just look at your pictures and cut straight across the horizontal line at the bottom of the cap. Reinstall the cap, drill a new hole for rivet. Plus one inch is lots, but better safe then sorry.
QUADSCRIB
Expert
Kingsandman said:Please don't take this as negative, but did you shorten the rails? I've done three of these now using Nytro drivers and the first one was the learning experience. Unless you shorten the rails, move the skid back, or shave the plastic caps and driver tips, THEY WILL HIT! Believe me, it would happen when the suspension cycled and it was violent! The first one we shaved the plastic caps untill the indentations were gone, then spun the shaft in the lathe and took a 1/4" off the tips of the drivers. Now we just pull the caps off, cut them straight across, cut one inch off the rails, reinstall the caps and they'll now but up against the rubber suspension stopper. Haven't had any issues with the rails hooking the track due to the size of the drivers and the nature of the extroverts. Again, I'm not bashing, but I didn't think they'd hit and they do. Nick at Vernon Motorsports and Grant at Nicola Motorsports both had the same problem with the same results. One was an instant destruction of the drive shaft and the bulkhead when the shaft stopped dead impaling the rail tips over some whoops. Just trying to helpMotoPsycho said:There is a fair amount of room between the extro's and the rail tips... no worries
Seems like this topic is laid out w/ pics somewhere on this site....
murph
Extreme
Installing 3.0" Nytro extros on Phazer
When installing 3.0" Nytro extro drivers on the drive shaft what are you guys using to line them up?
Are you marking the existing Phazer driver locations on the axle and then putting the Nytro in the same place or????
when trimming the rail tips, are you then putting anti-stabs in place?
I'm sure this is not the last of my questions......
Thanks,
Murph
When installing 3.0" Nytro extro drivers on the drive shaft what are you guys using to line them up?
Are you marking the existing Phazer driver locations on the axle and then putting the Nytro in the same place or????
when trimming the rail tips, are you then putting anti-stabs in place?
I'm sure this is not the last of my questions......
Thanks,
Murph
Well, things seemed to all come together well...
Last pic of this sequence... StoliDoli... 6' 5", 285 lbs and highmarkin' on a Phizzer (there was a bit of poaching!)
)
Hey MotoPsycho how does it do in the deep stuff now and did you change your clutching any. A 56 lower gear seems like alot what is your track speed like and top end.
