Which clutch spring to use for your Bike?

[GoFast.....]

Now that we have Determined there are diffrent levels of tension or lbs of springs. It would be great to hear from people. I think the first thing would be to determine how far the stock spring will go and then move up. I personally know the stock will go to 105tq and 100hp on a 02 bike but know it will not go to 135hp in my 06 114 that I had. I had to go to a Barrnett clutch but maybe a stronger spring would have held but I destroyed the plates and just went to Barrnett setup which really held up well. I think all of us want to use as little tension as possible for the left hand sake. I wonder myself have light of spring I can get by with on my 107 which should be around 120 tq

[ameagle13]

Got an SE spring on a 113" with 128/128 and it hasn't slipped yet.  Standing burnouts, rolling burouts, hard shifts.  Have broken a belt already but the clutch is still perfect.  Did a sixth gear pull on the dyno and checked the gear ratio to see if it was slipping at first and showed no signs of slipping at all.  I was really surprised myself.

Good Luck,
J

[Don D]

I use a stock 02 spring and a VPC 93 on my 107, stock clutch pack. Easy on the hand and bites well, no slippage.

[Admiral Akbar]

Well at 6500 feet your true torque will only be about 100 fp.. Ran a 100hp/tq at sea level for 15K and it worked fine..  I got a vp92 and light clutch pack for sale over in the swap meet...

Max

[GoFast.....]

Well at 6500 feet your true torque will only be about 100 fp.. Ran a 100hp/tq at sea level for 15K and it worked fine..  I got a vp92 and light clutch pack for sale over in the swap meet...

Max

I do not know if I am going to just need a spring or a clutch pack. I need to get it on the dyno. The 107 I think is going to come in I think between 120 and 125 and if it will not hold I will need one. Shippimg to oversees is expensive

[mtnmotorrider]

I have found the SE spring coupled with an Energy One extra plate kevlar steel/friction stack to hold very well under all conditions for my 106 FPT 103CI Road Glide.  A heavy bike operated in very mountainous terrain.  No slippage shown on the dyno chart.

[Scramjet]

At the risk of repeating myself, here are two data points:

My 2007 FLHX 103" with stock spring at about 100/100 has not slipped with over 10,000 miles on it.

On the other hand I know of a 2007 FLHX 107" HQ build that slipped badly at around 115/115.

I guess every bike is a little different.

B

[Ultrashovel]

I've got the Harley easy pulling clutch kit with the soft spring. I'm running a sidecar and it has yet to slip. Life is good. 

[Arrowsmit]

IMHO for easiest lever pull while maintaining a no slip clutch the AIM VPC w/stock spring is the way to go. If a pre '06 bike the HD easy pull ramps will help. For bigger builds add the E-One extra plate kit.

VicW.

[GoFast.....]

At the risk of repeating myself, here are two data points:

My 2007 FLHX 103" with stock spring at about 100/100 has not slipped with over 10,000 miles on it.

On the other hand I know of a 2007 FLHX 107" HQ build that slipped badly at around 115/115.

I guess every bike is a little different.

B

100 and 115 are a lot diffrent. I think about at 110 the stock spring becomes questionalble. I have a 07 flhx that was 100tq and a stock spring can handle that

[hot rod 98]

SE spring and VP92 feels like stock pull, zero problems!