View Single Post
  #6  
Old 03-29-2023, 08:53 AM
Half-Inch Stud's Avatar
Half-Inch Stud Half-Inch Stud is offline
Ultimate Warrior
 
Join Date: Jul 2000
Location: BlueBell, PA or AL U.S.A.
Posts: 18,476
Default

Meanwhile the Calc by David Vizard will advize a 106 LSA or even lower for 9.5:1. He insists.

LSA = 128 - ( 455/8 / 2.11 * 0.91 ) for 10.5:1,

You can move a degree lower for 9.5:1, a degree higher for 11.5:1
Some minor movement for effective Rocker Arm ratio, to account for seat velocity to 0.2" lift
No movement for Longer rods ( 0.25* )


The issue is tradition, Cam marketing, and COTS cam availability.

__________________
12.24/111.6MPH/1.76 60'/28"/3.54:1/SP-TH400/469 R96A/236-244-112LC/1050&TorkerI//3850Lbs//15MPG/89oct

Sold 2003: 12.00/112MPH/1.61 60'/26"x3.31:1/10"/469 #48/245-255-110LSA/Q-Jet-Torker/3650Lbs//18MPG 94oct
Sold 1994: 11.00/123MPH/1.50 60'/29.5"x4.10:1/10"/469 #48/245-255-110LSA/Dual600s-Wenzler/3250Lbs//94oct