Converting Cannons from 3rd ed. to 4th ed.

KataH · 03-09-2016, 05:03 AM

Anyone have any formulas to convert Cannons from 3rd edition to 4th edition stats?

Thanks

mlangsdorf · 03-09-2016, 06:41 AM

For TL4-5 cannon, you can eyeball it by halving damage and Acc and leaving the other stats unchanged. That still puts the Napoleon from High-Tech (M. Hurst's for 3rd edition) at 2.5x damage as the Napeleon from High-Tech (SA Fisher et al for 4th edition) but the Napoleon in 3rd edition seems to have erroneously high damage anyway.

For TL6-7 cannon, halve Acc (and refactor it to properly reflect the use of scopes and other aiming aids). AP penetration damage and fragmentation damage are unchanged; explosive damage is doubled. Note that you can shift AP penetration by about 10% - the 75mm Long Tank Gun from the WW2 Core book is written up as the Rheinmetall KwK40 and the Waverliet M1 in High-Tech (4th ed) with subtly different stats.

Hope that helps!

KataH · 03-10-2016, 10:39 PM

Thanks for the information, I appreciate it.

03-09-2016, 05:03 AM	#1
KataH Join Date: Nov 2004 Location: New Mexico	Converting Cannons from 3rd ed. to 4th ed. Anyone have any formulas to convert Cannons from 3rd edition to 4th edition stats? Thanks __________________ KataH "Follow me if I advance! Kill me if I retreat! Avenge me if I die!"

03-09-2016, 06:41 AM	#2
mlangsdorf Join Date: Aug 2004 Location: Austin, TX	Re: Converting Cannons from 3rd ed. to 4th ed. For TL4-5 cannon, you can eyeball it by halving damage and Acc and leaving the other stats unchanged. That still puts the Napoleon from High-Tech (M. Hurst's for 3rd edition) at 2.5x damage as the Napeleon from High-Tech (SA Fisher et al for 4th edition) but the Napoleon in 3rd edition seems to have erroneously high damage anyway. For TL6-7 cannon, halve Acc (and refactor it to properly reflect the use of scopes and other aiming aids). AP penetration damage and fragmentation damage are unchanged; explosive damage is doubled. Note that you can shift AP penetration by about 10% - the 75mm Long Tank Gun from the WW2 Core book is written up as the Rheinmetall KwK40 and the Waverliet M1 in High-Tech (4th ed) with subtly different stats. Hope that helps! __________________ Read my GURPS blog: http://noschoolgrognard.blogspot.com

03-10-2016, 10:39 PM	#3
KataH Join Date: Nov 2004 Location: New Mexico	Re: Converting Cannons from 3rd ed. to 4th ed. Thanks for the information, I appreciate it. __________________ KataH "Follow me if I advance! Kill me if I retreat! Avenge me if I die!"