HarleyTechTalk

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.

Does anyone know if silicone content in the KB hypereutectic pistons has changed? They recommend a minimum piston to wall clearance of .0015" nowadyas. I used to follow their recommended minimum of .00075" clearance.