Secondary Spring Help

[gerrman]

Need a quick explanation again on the numbers on a secondary spring. Have a '09 Dragon, stock spring is Blk/Purp 160-240. Considering to try a Blk/Wht 160-260 or a Blk/Silver 160-280. My main question is what will the effect be on the clutch/sled with the increased second number pressure? Thanks

 

[thefullmonte]

Team secondary springs are measured at 2.2" and 1.1". The second # better reflects the amount of side force you will be working against at full shift out.
To some extent the stiffer pressure acts like a shallower helix. It helps provide more side force at full shift when the belt contact with the sheave is at it's least.
In a nutshell it will slow the up shift of the secondary slightly and speed the back shift. Requiring more RPM from the primary.
The more spring you use the more torque sensing your clutch can be as it has a better hold of your belt at all times. The down side is you must have a primary setup that can pull the extra spring. Must be a balance between your clutches.
If you have to much secondary spring pressure, the clutch might not be able to shift out all the way. The primary will be trying to shift, but likely slipping.
I hope I explained that right.

 

[gerrman]

Team secondary springs are measured at 2.2" and 1.1". The second # better reflects the amount of side force you will be working against at full shift out.
To some extent the stiffer pressure acts like a shallower helix. It helps provide more side force at full shift when the belt contact with the sheave is at it's least.
In a nutshell it will slow the up shift of the secondary slightly and speed the back shift. Requiring more RPM from the primary.
The more spring you use the more torque sensing your clutch can be as it has a better hold of your belt at all times. The down side is you must have a primary setup that can pull the extra spring. Must be a balance between your clutches.
If you have to much secondary spring pressure, the clutch might not be able to shift out all the way. The primary will be trying to shift, but likely slipping.
I hope I explained that right.

Thanks Monte....Snow/weather conditions have not been the greatest to do a little testing around here...but I have noticed that the secondary clutch can be a little warmer than the primary at times(both are not smoking hot either)...Am I correct then if the secondary is warmer that it is slipping a bit...and a slightly heavier spring will help with the slipping..20 lb increase?...My current setup on the primary is giving lots of RPM so would a slight increase in secondary spring (160-240 to 160-260) affect it very much?
This setup is on a '09 D8 Dragon 163.

 

[thefullmonte]

Yeah, from what you are saying I think the 160-260 would be the ticket. Sounds like you are just doing a bit of fine tuning. Everything else being correct then as you said belt slippage is usually what contributes to clutch heat. I don't think you would notice much difference in RPM. You may just swap a little slipping RPM for some power to the track RPM.