TAPP / PRO4

[DooZ]

Here's a spring I found that may offer some benefits if the green is a bit much in the Pro4/Stm driven https://boostkinetics.com/shop?olsPage=products/arctic-cat-torsional-secondary-spring-100150-free-shipping
More of a fine tuning change vs drastic change from green to red/white

 

[ClutchMaster]

Here's a spring I found that may offer some benefits if the green is a bit much in the Pro4/Stm driven https://boostkinetics.com/shop?olsPage=products/arctic-cat-torsional-secondary-spring-100150-free-shipping
More of a fine tuning change vs drastic change from green to red/white

yea that spring is probably similar to the EPI purple, and is what I’ll have to settle for fer now.

 

[DooZ]

yea that spring is probably similar to the EPI purple, and is what I’ll have to settle for fer now.

Not familiar with the EPI purple, but it must be close to the D&D purple https://shop.ddracing.com/d-d-powersports-llc-d-d-secondary-springs-detail.htm?productId=-405389

 

[STAIN]

@ 2 1/2" @ 1 7/16"
Dalton white 98 165
Cat green 96 157
EPI purple 86 148
Cat red/white ??? 116

I cant find the start rate for the CAT red/white but the finish is pretty low

 

[ISLANDRACING]

@ 2 1/2" @ 1 7/16"
Dalton white 98 165
Cat green 96 157
EPI purple 86 148
Cat red/white ??? 116

I cant find the start rate for the CAT red/white but the finish is pretty low

I found the specs for the RED/WHITE 68/116

Also some specs for the D&D springs:
D&D Grey 67/123
D&D Purple 83/140

 

[showtime]

Very good info ,i have hurricane ss tunes ,tapp and stm with button cover instead of roller ,only diff . is i have 9000 2017 cat .

 

[showtime]

Have tapp black spring, number 2 rollers, set on a on cam, 3 on clickers, 52\44 with purple in centre hole on stm ,xs825 , pulls 8900 0n 285 stock muffler tune ,happy with set up

 

[STAIN]

Have tapp black spring, number 2 rollers, set on a on cam, 3 on clickers, 52\44 with purple in centre hole on stm ,xs825 , pulls 8900 0n 285 stock muffler tune ,happy with set up

Wow. Surprised you can pull RPM with that set up. More to consider.....

 

[Crossfire12]

steeper angle, spring pressure balance, not pressuring a flat angle causing super squeeze on belt .

 

[STAIN]

with purple in centre hole

Is that the EPI purple secondary spring?

 

[THEPASMAN]

Where does the dalton B/O fall in that line up of springs. Also the stock yellow. Just wondering



Thanks Brent

 

[J & J Racing]

Wow. Surprised you can pull RPM with that set up. More to consider.....

Remember this is a button cover
Can pull probably 4 degrees more than roller or so
Still 40 finish with roller
I liked 38 to 40

 

[showtime]

Is that the EPI purple secondary spring?

Thinking dalton ,come from Hurricane

 

[STAIN]

Remember this is a button cover
Can pull probably 4 degrees more than roller or so
Still 40 finish with roller
I liked 38 to 40

That makes a little more sense

 

[KnappAttack]

Thinking dalton ,come from Hurricane

EPI purple secondary spring comes from Erlandson Performance.
It is NOT a Dalton spring. Dalton has a Cat white which is the exact spring as a Cat green, both of which is a bit more pressure than the EPI purple.