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Did DC hit 200 fps @ 10GPP after all??
TimmyDeNorCal:
I absolutely agree that DC did everything he could to test his bow(s) accurately. Hopefully I did not come off as doubtful of his measures, I only meant to inquire into any additional testing, or a final agreed chrono reading, because the post seemed to be heading that way. And, of course, I never came across any more discussions on that amazing BooYew RD masterpiece after the original post.
And likewise, that’s interesting that you, Mark, have seen the exact opposite of my lighter-draw-weight-performing-at-higher-levels theory. Maybe I am just completely off-based, but it just seems like every higher DW bow I test - mine or not - hits a quicker wall speed-wise...
...but, then again, Simon/Simson has a pretty heavy Osage recurve showcased on his site (66-70# or so, I think) that popped 185+fps! That’s such a dern heavy arrow at 10GPP.
I dunno...the speed chase captivates me...still. And there are so many ridiculously talented bowyers floating around this site, so I’m sure there are plenty of bows knocking on the 200fps door at any given time. I’ve just got to jump into the backed-bow game so I can at least play in the parking lot while the pros work out their kinks on-field.
superdav95:
Timmy. I’ve also noticed that with my bows. My 50# and under bows are my best performers as far as speed testing gpp is concerned. I have several 40-45# bows that outperform gpp wise then my slightly heavier bows at 48-55lbs. There does seem to be a threshold that I’ve noticed also. The only thing I’ll say is this. There are almost an infinite number of variables that come into play when it comes to testing speed that I will not even attempt to list them all here. We would be here all day discussing them and debating them all. Obviously the design of the bow matters a whole lot in its speed. One thing I will say that I’ve noticed that may have an influence On your theory is that we as shooters tend to have better/proper form when shooting lighter poundage bows. Some may say this has little difference but it does matter in my opinion. The release will likley be better, crisper, cleaner. The torquing the bow may be less. Less plucking on release also with lighter weight bows to name a few. The only way to eliminate some of these factors is to use a trigger release shooting machine to remove these human elements and get consistent readings. Then you could more confidently see if the theory holds. My gut tells me based on my own bows is that it does.
Tuomo:
Thanks for reminding... I bought one of DC's 200 fps bow, got it and it is really nice bow! It is now here in Finland, waiting for testing. I had problems with my shooting machine and then came other "too much to do" -reasons, so this has forgotten. I really have to take this bow back to high order of priority.
I known that it is difficult take all variables into account but I will try. I want to be very precise and objective. I hope that around the end of the year I have time for this kind of project.
simk:
We indeed miss DC on here. I have been fascinated by his approach and tried to get the 200 myself. Some of the bows were 190+ but never 200. I also copied DC's design but the results weren't even close to 200 🤔 I then lost interest a little in this actually pointless challenge and instead set my goal in making a smooth accurate simple and durable longbow. I was very surprised by the speeds I got with these 67-68" longbows. My latest test on the shooting machine gave me a solid 198, 197, 196, 196 with 10gpp and a draw of shy under 28" and 212fps for 7.6gpp. I'm pretty sure there is a 200fps-bow amongst these untested bows in my shop. If not it will be possible to make one with only slight adjustments. And yes, they drop over time. The prototype I'm shooting since spring now settled in at 185fps. And yes, lower drawweights clearly allow better results on wooden bows. And yes, in my shop yew as a belly constantly outperforms tropical woods and osage. I will take a video of the next testing and let you know. Cheers
superdav95:
Sweet looking bows Simk! The closest I got to this myself was my hickory sinew and horn bow. It got to 197fps at 10gpp on initial speed testing then it settled in at 189, 191fps after several shots. It’s reflex settled in at around 7.5”. The only other bow I had come close to this was a 5 piece bamboo short bow at 194fps at 8.33gpp. There were things I could have done to speed up my bows that includes my arrows but I didn’t. Taking the human element out would likley make the difference.
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