secondary upgrade

[edgeracer1]

how much of a benifit is there by switching to the nytro/srx etc style clutch. I have a drag srx and i am used to workin on those secondarys but have never used a phazer type.

 

[cannondale27]

I have one on my Phazer(Vmax500 reverse secondary) and really have not seen any difference at all.I thought about trying a roller setup on it but worry the faster backshift will cause more engine braking which I dont want.

 

[edgeracer1]

so a srx secondary should fit?

 

[cannondale27]

No the splines are to big.Vmax 500 clutch is same as SRX but smaller splines.

 

[edgeracer1]

Really what year and is it even worth replacing?

 

[Tbyrd]

cannondale, what degree helix and spring did you end up useing? did you stay with same specs as old secondary?

 

[cannondale27]

Edge I would say no not worth doing unless you were to want a roller.

 

[Tbyrd]

The book says the shorty's run a 39 degree helix, stock. Are you sure on the 85 #? Just trying to get a base line for a setup on my mnt lite.

 

[cannondale27]

I will look again but I am pretty sure.Maybe the angle is different for the reverse secondary?I think it was the stock Helix from Vmax 500.

 

[cannondale27]

Shows what I know about clutching!38 helix?Sorry.Anyone know how to identify these secondary's?
Here is the Vmax stock specs.
http://www.zenitram-inc.com/vmax.htm

 

[yam177]

45 degree helix

 

[cannondale27]

How can you tell?

 

[cannondale27]

Here is the post when I installed it last year.How do you identify these clutches and Helix?
http://www.ty4stroke.com/viewtopic.php? ... =secondary

 

[yam177]

BV51 Id's the Helix angle

 

[cannondale27]

Is there a chart or something to cross reference?