David,
I'm trying to visualize a short armed linear tracking tonearm negotiating a warp and I can't help but see the cartridge alignment doing the exact opposite of what you're saying. You are right that the long arm keeps the cartridge closer to parallel when going over a warp. You are also right in that the short arm changes the angle of the cartridge more than a long arm when going over warp, but it changes in the opposite direction that the record surface changes.
Imagine looking at your cartridge from the side with the record surface moving from right to left. A warp comes to the cartridge and lifts the tonearm. The cartridge tilts, lifting the cantilever end more than the tonearm cable pin end (although both lift, the cantilever end lifts more... and much more with a short arm). The record surface does the opposite. As the cartridge climbs the warp, the record surface is higher on the right side of the cartridge than it is on the left side of the cartridge. It's tilted in the opposite direction. For the two to remain in alignment, they must be tilted in the same direction. Please correct me if I don't have this right.
I'm trying to visualize a short armed linear tracking tonearm negotiating a warp and I can't help but see the cartridge alignment doing the exact opposite of what you're saying. You are right that the long arm keeps the cartridge closer to parallel when going over a warp. You are also right in that the short arm changes the angle of the cartridge more than a long arm when going over warp, but it changes in the opposite direction that the record surface changes.
Imagine looking at your cartridge from the side with the record surface moving from right to left. A warp comes to the cartridge and lifts the tonearm. The cartridge tilts, lifting the cantilever end more than the tonearm cable pin end (although both lift, the cantilever end lifts more... and much more with a short arm). The record surface does the opposite. As the cartridge climbs the warp, the record surface is higher on the right side of the cartridge than it is on the left side of the cartridge. It's tilted in the opposite direction. For the two to remain in alignment, they must be tilted in the same direction. Please correct me if I don't have this right.