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> MY08 Switchback Torsion Springs, Optional springs
Snobeeler
post Feb 10 2009, 04:57 PM
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Looking at the springs available it appears to me the Standard spring is the stiffest. Am I reading it correctly. I would like a set that is stiffer for my 08 Turbo SB for touring.

7043079-067 Spring, Torsion, .359S, 12.5#, Black, LH [Std]
7043080-067 Spring, Torsion, .359S, 12.5#, Black, RH [Std]

7043240-067 Spring, Torsion, .347S, 77, 9#, Black, LH [Opt]
7043241-067 Spring, Torsion, .347S, 77, 9#, Black, RH [Opt]

7043071-067 Spring, Torsion, .347S, 80, 11#, Black, RH [Opt]
7043070-067 Spring, Torsion, .347S, 80, 11#, Black, LH [Opt]

This post has been edited by Snobeeler: Feb 10 2009, 04:59 PM


--------------------
06 FST Classic............. 8,700 miles, All Updates and Team Tips Completed, Yayou's 2012 ECU Upgrade, Reinforced Boost Box, PS Advanced Rider Adjustable Boost Pressure Controller, Innovative Motorsports Data Logger, Stewert Warner Boost Gauge, 08 Spindles, SLP slt Ski's with Dual Runners, Revalved M-10 shocks, Reinforced Front A-Arm, Rebalanced Drive Clutch, SLP Heat Vents, Gearcase Alignment Done, Violet Wire Fix, Rerouted Cyclone Seperator Vent to Muffler, Jackshaft Notch, 12 Volt D-C Outlet, Gas Tank Float Level Modification, RC7PYCBX Spark Plugs.

2014 800 Switchback Pro R Adventure..........1650 Miles, Rerouted VES Solenoid Outlet (sound familiar), StudBoy Duece Runners, Heavy Rear Track Spring.
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Switchrider
post Feb 11 2009, 08:23 AM
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QUOTE(Snobeeler @ Feb 10 2009, 05:57 PM) *
Looking at the springs available it appears to me the Standard spring is the stiffest. Am I reading it correctly. I would like a set that is stiffer for my 08 Turbo SB for touring.

7043079-067 Spring, Torsion, .359S, 12.5#, Black, LH [Std]
7043080-067 Spring, Torsion, .359S, 12.5#, Black, RH [Std]

7043240-067 Spring, Torsion, .347S, 77, 9#, Black, LH [Opt]
7043241-067 Spring, Torsion, .347S, 77, 9#, Black, RH [Opt]

7043071-067 Spring, Torsion, .347S, 80, 11#, Black, RH [Opt]
7043070-067 Spring, Torsion, .347S, 80, 11#, Black, LH [Opt]



I installed Torsion Springs 7041940-067, 7041941-067 .405 Square on my 06 switchback. They are heaver than stock. I am 300 lbs. I like them on the medium setting when checking Sag etc. I don't think these cross to any listed above. When I pull it up online it lists my number as a torque arm. I assure you that is not what I installed. At the end of my part number the .405 is the spring width (Not radius because it is square) I would guess the measurment on the part numbers you have listed means the same. The larger the number (ie .359) the stiffer the spring. I don't see my springs listed any more. Not sure if this helps you.


--------------------
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Snobeeler
post Feb 11 2009, 11:18 AM
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QUOTE(Switchrider @ Feb 11 2009, 09:23 AM) *
I installed Torsion Springs 7041940-067, 7041941-067 .405 Square on my 06 switchback. They are heaver than stock. I am 300 lbs. I like them on the medium setting when checking Sag etc. I don't think these cross to any listed above. When I pull it up online it lists my number as a torque arm. I assure you that is not what I installed. At the end of my part number the .405 is the spring width (Not radius because it is square) I would guess the measurment on the part numbers you have listed means the same. The larger the number (ie .359) the stiffer the spring. I don't see my springs listed any more. Not sure if this helps you.

Thanks, I still do not believe the standard spring is the stiffest, although using the spring size listed shows it is. I wonder what the 77 and 80 mean on the optional ones. The standard springs do not show this number


--------------------
06 FST Classic............. 8,700 miles, All Updates and Team Tips Completed, Yayou's 2012 ECU Upgrade, Reinforced Boost Box, PS Advanced Rider Adjustable Boost Pressure Controller, Innovative Motorsports Data Logger, Stewert Warner Boost Gauge, 08 Spindles, SLP slt Ski's with Dual Runners, Revalved M-10 shocks, Reinforced Front A-Arm, Rebalanced Drive Clutch, SLP Heat Vents, Gearcase Alignment Done, Violet Wire Fix, Rerouted Cyclone Seperator Vent to Muffler, Jackshaft Notch, 12 Volt D-C Outlet, Gas Tank Float Level Modification, RC7PYCBX Spark Plugs.

2014 800 Switchback Pro R Adventure..........1650 Miles, Rerouted VES Solenoid Outlet (sound familiar), StudBoy Duece Runners, Heavy Rear Track Spring.
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ExcursionPSD
post Feb 12 2009, 01:39 AM
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QUOTE(Switchrider @ Feb 11 2009, 08:23 AM) *
I installed Torsion Springs 7041940-067, 7041941-067 .405 Square on my 06 switchback. They are heaver than stock. I am 300 lbs. I like them on the medium setting when checking Sag etc. I don't think these cross to any listed above. When I pull it up online it lists my number as a torque arm. I assure you that is not what I installed. At the end of my part number the .405 is the spring width (Not radius because it is square) I would guess the measurment on the part numbers you have listed means the same. The larger the number (ie .359) the stiffer the spring. I don't see my springs listed any more. Not sure if this helps you.


The MY06-07 Switchback have a completely different 144" uncoupled deep snow suspension.

The MY08-09 Switchback have the 136 Coupled suspension.

The stock springs are stiffer than the other two sets.
7043079-067 Spring, Torsion, .359S, 12.5#, Black, LH [Std]
7043080-067 Spring, Torsion, .359S, 12.5#, Black, RH [Std]


The below springs are heavier rate springs that were optional on the MY05 900 fusion and on the MY07 700 Cleanfire Dragon.

7043128-067 .405SQ, 16.25# LH
7043129-067 .405SQ. 16.25# RH

The 77 and 80 numbers represent the degrees between the main leg and the short leg of the torsion spring or hairspring.

This post has been edited by ExcursionPSD: Feb 13 2009, 12:25 AM


--------------------
07 FST IQ Cruiser. 15,710 miles SLP Powder Pros, 10" carbide, Fox Float IFS, MY09 LW spindle, skidplate, Racecraft intercooler & boost box, ELA Gen II exhaust, Precision Sports 2012 reflash & HD eng. mounts, full SLP intake, heat control and venting package, 136 x 1.25 RipSaw full clipped w/144 plastic doubled XL Fast-Trac 1.375 studs, Avid-Products.com external drivers on axle, revalved M10 Fox shocks, 4 inner and 2 outer idlers added, Receiver hitch & projector beam installed. rzimmer underdrive alt. pulley. AMSOIL fluids by MAXoil.com

10 600 CFI LX INTL Red Powder Pro skis, red skidplate, 108 double XL Fast-Trac 1.375, 4 rear idlers, receiver hitch

07 600 CFI Switchback Red Powder Pro skis, projector beam, red skidplate, 116 double XL Fast-Trac 1.375, receiver hitch

previously 06 FST IQ Touring SLP Powder Pros, 136 1.25 IceRipper
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Snobeeler
post Feb 12 2009, 07:13 AM
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QUOTE(ExcursionPSD @ Feb 12 2009, 02:39 AM) *
The below springs are heavier rate springs that were optional on the MY05 900 fusion and on the MY07 700 Cleanfire Dragon.

7043128-067 .405SQ, 16.25# LH
7043129-067 .405SQ. 17/25# RH

The 77 and 80 numbers represent the degrees between the main leg and the short leg of the torsion spring or hairspring.

Do you know if the 25# springs will fit on my 08 SB. Being twice as stiff at 25# would mean I could only use them when touring. Too stiff for everyday use.


--------------------
06 FST Classic............. 8,700 miles, All Updates and Team Tips Completed, Yayou's 2012 ECU Upgrade, Reinforced Boost Box, PS Advanced Rider Adjustable Boost Pressure Controller, Innovative Motorsports Data Logger, Stewert Warner Boost Gauge, 08 Spindles, SLP slt Ski's with Dual Runners, Revalved M-10 shocks, Reinforced Front A-Arm, Rebalanced Drive Clutch, SLP Heat Vents, Gearcase Alignment Done, Violet Wire Fix, Rerouted Cyclone Seperator Vent to Muffler, Jackshaft Notch, 12 Volt D-C Outlet, Gas Tank Float Level Modification, RC7PYCBX Spark Plugs.

2014 800 Switchback Pro R Adventure..........1650 Miles, Rerouted VES Solenoid Outlet (sound familiar), StudBoy Duece Runners, Heavy Rear Track Spring.
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ExcursionPSD
post Feb 13 2009, 12:28 AM
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Group: Moderators
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From: Milwaukee, Wisconsin
Member No.: 744
Current Vehicle:
07 FST Cruiser
Age: 63



QUOTE(Snobeeler @ Feb 12 2009, 07:13 AM) *
Do you know if the 25# springs will fit on my 08 SB. Being twice as stiff at 25# would mean I could only use them when touring. Too stiff for everyday use.


That was a typo, it should be 16.25#


--------------------
07 FST IQ Cruiser. 15,710 miles SLP Powder Pros, 10" carbide, Fox Float IFS, MY09 LW spindle, skidplate, Racecraft intercooler & boost box, ELA Gen II exhaust, Precision Sports 2012 reflash & HD eng. mounts, full SLP intake, heat control and venting package, 136 x 1.25 RipSaw full clipped w/144 plastic doubled XL Fast-Trac 1.375 studs, Avid-Products.com external drivers on axle, revalved M10 Fox shocks, 4 inner and 2 outer idlers added, Receiver hitch & projector beam installed. rzimmer underdrive alt. pulley. AMSOIL fluids by MAXoil.com

10 600 CFI LX INTL Red Powder Pro skis, red skidplate, 108 double XL Fast-Trac 1.375, 4 rear idlers, receiver hitch

07 600 CFI Switchback Red Powder Pro skis, projector beam, red skidplate, 116 double XL Fast-Trac 1.375, receiver hitch

previously 06 FST IQ Touring SLP Powder Pros, 136 1.25 IceRipper
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Snobeeler
post Feb 13 2009, 07:35 AM
Post #7


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Group: Moderators
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Current Vehicle:
06 Classic, 14 Pro R 800
Age: 55



QUOTE(ExcursionPSD @ Feb 13 2009, 01:28 AM) *
That was a typo, it should be 16.25#

Thats more inviting. I may try those. Thanks


--------------------
06 FST Classic............. 8,700 miles, All Updates and Team Tips Completed, Yayou's 2012 ECU Upgrade, Reinforced Boost Box, PS Advanced Rider Adjustable Boost Pressure Controller, Innovative Motorsports Data Logger, Stewert Warner Boost Gauge, 08 Spindles, SLP slt Ski's with Dual Runners, Revalved M-10 shocks, Reinforced Front A-Arm, Rebalanced Drive Clutch, SLP Heat Vents, Gearcase Alignment Done, Violet Wire Fix, Rerouted Cyclone Seperator Vent to Muffler, Jackshaft Notch, 12 Volt D-C Outlet, Gas Tank Float Level Modification, RC7PYCBX Spark Plugs.

2014 800 Switchback Pro R Adventure..........1650 Miles, Rerouted VES Solenoid Outlet (sound familiar), StudBoy Duece Runners, Heavy Rear Track Spring.
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