HarleyTechTalk

If you can't find the clutch springs info, let me know, as I have a chart I made several years ago of some Harley, and aftermarket.
John

FWIW up in the "Sticky posts" there's a thread on clutch spring color codes that you might find interesting. Towards the end there's a chart with different spring part numbers, pressure etc.

On my 2010 FXDC I swapped out the stock "standard lite spring" for the "standard early  spring."

2010 fat boy 6 speed fm 110 kit  rider is 160 lbs 50mm tb 625 lift tman cam bike has 113hp 125 tq no slip as of yet  on dyno owner rides easy / normal no burn out should se spring be put in or wait till see if it slips at all

When I did my 103, made 115 foot lbs. I had to get the spring and take to tuner because it was slipping on the dyno

Bike weight, gear ratio etc?  More info may get you a better guesstimation.  That's all you can count on with no details.

Aprox how much hp tq numbers before se spring or upgraded clutch swap ?

 


I like that magneto

Good Catch!  Definitely looks well kept.  Good Luck and Have Fun with It!

Don Dorfman or John Sachs probably know.

I will add this because people do pay attention.  If I had the means to manufacture a fuel rail.  I would make it a larger volume.  If you have read fuel pressure with a mechanical gauge.  You understand the fluctuations of pressure that happen. You also see the gauge can't keep up with this fluctuation at higher rpms.  Read pressure at 1000 frames a second and you really see pressure fluctuations.  Bigger volume is less affected by pressure drop.

I have done something's to help volume on the pressure side of the reg but..... volume in the manifold would be nice.