- Joined
- Nov 26, 2009
- Messages
- 3,097
The RX was my favorite flat lifter cam when I was racing my 850 Monoshock. Someone told me it was the best High HP, High RPM cam you could get for a Nort and I was convinced when I started using it. This cam has not yet been configured for BSA radiused lifters. I'm looking into that and I have contacted Megacycle to see what they can do.
I spent some time mapping out cam profiles and you can view the comparison between the RX and the PW3 below. Note the closing ramp difference below and how close everything else is except the ramp.
BTW - the Norris RX first came out as the HPI 7. George of HPI (horsepower international) told me it came from an Offenhouser grind. George is the guy who gave us the 920cc Norton.
Below is a comparison of the RX to the Axtell #3 (JS1)
You can see the general similarity in shape. Now the problem is getting the RX re-shaped to work with BSA lifters. I need some help getting the data I need to make or have someone make a cam master for the RX cam re-designed for BSA radiused lifters.
I spent some time mapping out cam profiles and you can view the comparison between the RX and the PW3 below. Note the closing ramp difference below and how close everything else is except the ramp.
BTW - the Norris RX first came out as the HPI 7. George of HPI (horsepower international) told me it came from an Offenhouser grind. George is the guy who gave us the 920cc Norton.
Below is a comparison of the RX to the Axtell #3 (JS1)
You can see the general similarity in shape. Now the problem is getting the RX re-shaped to work with BSA lifters. I need some help getting the data I need to make or have someone make a cam master for the RX cam re-designed for BSA radiused lifters.