I have a Shockwave on my 270hp McXPRESS Nytro and wonder what RPM I should set it for? What is the limiter set at? What way do you rotate it to lower RPM? I don't have my sled handy and I can't remember if it's marked on the helix.
What RPM do I clutch my 270HP McXPRESS Nytro?
- Thread starter Matte Murder
- Start date
8800 rpm, bad practice to adjust rpms via the secondary, turbo Nytros like 47 straight cut helix, ditch the shockwave and get a 47 then tune with the primary, then never touch it again after that. JMO
M5
M5
If you run the 47 degree straight helix what is the rest of the clutch set up? What is bad about the Shockwave helix, seem to be pretty common on Nytros.
They bind, everyone I know who has had one got rid of it.
Primary
BWB spring
14.5 rollers
8BU 00 loaded right to the max with MPI brass rivets
secondary
47 straight cut
Artic Cat green spring or purple EPI or Black Alpine all the same spring
Set a 0 and 1
M5
M5
make sure that shockwave is allowing for full shift out cause i bet its not allowing that to happen, like M5 said toss that helix
B
BigFish BC
Well-known member
yes 8800 seems best,they do make a bit more hp at 9000-9100 but for longevity of the motor + more tork at 8800
S
SNAFU
Member
The ramps on the shockwave helix are quite a bit narrower than a Yamaha helix and quickly wear groves in the plastic buttons. I removed my shockwave too.
I was having the same problem as well. I also removed my shockwave.
B
BigFish BC
Well-known member
yup same here plus was not shifting out all the way.
