Originally Posted by
Black Beard
Interesting. I can replicate that if I change the entrance/exit parameters of the TP to increase the drag. The TP would have to have less smooth changes in shape than I'd like- like sudden step entrances/exits. But here are so many assumed vaues that it could still be completely wrong.
Thanks for that. All useful in understanding how it all works.
BB
BB, I got some similar results to Jon when testing TP sizes. I started at 3mm and worked my way up to 3.9 in 1mm increments. Each time I drilled out I gave the entrance a tickle with a center drill so I had a beveled entrance and not just a step. Have done this excersize twice now, but using a different power plant on 2nd go.
From memory power was down ~ 30fps, maybe a little more at start, but stayed consistant until around 3.5mm reached. Cycle wasn't bouncing much, though experienced more of a harder feel/stop at end of cycle. Things change quickly from 3.5 to 3.7. Power started to increase and shot cycle feel improved. No real gains seen over 3.7 other than more bounce at 3.9 which is contradicting JB! I have these notes somewhere, will dig them out to confirm memory! When using an O ring in my TX I find the 3.5 TP about right to control bounce, will go to 3.7 if using para seals. Indications are AA got TP size right!
TX200HC, Prosport, LGV - ex PCP pussy!