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Did DC hit 200 fps @ 10GPP after all??

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TimmyDeNorCal:
So, I must have missed the original post when DC posted his Boo Yew RD bow (as of today, Dec. 4th 2022, it is around page 72 or so)...but I came across it earlier today.

It seems that at the end of the responses on that post the general consensus was that it did, in fact, appear to be the first natural materials bow to break the 200 fps @ 10 GPP barrier...

...BUT, I have heard next-to-nothing about it since. I guess I had figured that the bow would be tested in a more official manner - maybe by Badger?? - and then the official reports posted for all of us here (and beyond) to revel in his achievement.

But I didn't see anything more. Either way, it is an amazing achievement, and I commend DC for his unflappable nature and tremendous results. I just was curious if we finally had an all-natural 200+ fps performer in the midst or not...??

Mo_coon-catcher:
I’ve heard of and know of a few in the ballpark over the years. Several years ago lebhuntfish made the Fury that if I remember right was at the 200fps mark when he made it. I don’t think Pat comes in here much anymore though. But all the 200fps bows I’ve heard of lose that initial speed pretty quick to break in but still settle in the 190 fps area, which is still screaming for a natural material bow. Natural material bows seem to settle into a speed over time.

Kyle

TimmyDeNorCal:
I did see “The Fury” post. Great bow, great profile. I guess the draw weight was higher than the bowyer thought, so his numbers went down a little...but it was still screaming around the upper 180s or even 191 or something, if I recall correctly.

I was just really curious how DC’s BooYew RD bow turned out...in the end, after any additional testing. Because that bow seemed to be holding up fairly well.

I know the wooden bow tends to drop some speed after its first 20-50+ arrows or so, so the 200fps barrier is even more difficult a task than the number suggests, considering the materials at play. My best is a hackberry self bow RD that I got to finally hold about 2.25” of reflex...it started off around 181, 182 FPS...and I got all excited, of course...and then by the 3rd chrono session (and the 40th arrow or so) it settled in at 175fps.

It’s so hard to conduct valid testing, too. So easy to underdraw, overdraw, get erratic readings, poor lighting, too much lighting, and so on.

But seriously, any bow that even approaches the fabled 200 is an amazing accomplishment. I just was curious what the final take on that BooYew masterpiece ended up being...

TimmyDeNorCal:
Also - I think the bows that flirt with 200 will be lower draw weight bows, like DC’s BooYew.

It just seems that 30-40# bows respond better at the 10GPP standard. It might just be my experience, but I really do think that higher draw weight bows suffer at 10GPP more so than 30-40#ers. I know it has been discussed before, but the 10GPP might be handicapping higher draw weight bows.

I don’t know have any empirical data on my opinion, but there seems to be something going on with the strain levels 50#+ bows experience that don’t seem to translate their draw cycle into the same speeds that the lower weight bows seem to attain. Of course, maybe my 50#er+ bows are just poorly tillered, or poorly designed, but they shoot well...I just cannot seem to achieve the same chrono readings that the 40-42#ers can.

mmattockx:

--- Quote from: TimmyDeNorCal on December 04, 2022, 04:10:31 pm ---It’s so hard to conduct valid testing, too. So easy to underdraw, overdraw, get erratic readings, poor lighting, too much lighting, and so on.
--- End quote ---

This is a huge hurdle to get over. I don't doubt DC's last bow did hit 200fps under his testing conditions, but there is no way it would have when shot off fingers in general use. DC was super meticulous about his testing and did everything he could to get consistent results and maximize what those results were.

This isn't a knock on him at all, he was trying to find out what his bows would do under optimum conditions and he worked hard to create those conditions. He used a shooting machine that allowed him to just draw the bow in one smooth motion and have it release exactly at 28" with no pausing or hold at full draw at all. He always shot indoors in his basement and used two chronographs to provide redundancy on the results.

None of this replicates general use of a bow by human hands, but it does show exactly what the bow is capable of at peak.



--- Quote from: TimmyDeNorCal on December 04, 2022, 04:17:48 pm ---It just seems that 30-40# bows respond better at the 10GPP standard. It might just be my experience, but I really do think that higher draw weight bows suffer at 10GPP more so than 30-40#ers. I know it has been discussed before, but the 10GPP might be handicapping higher draw weight bows.
--- End quote ---

That's interesting because I think I've seen more people go the other way and say heavier bows have an advantage for max speed.


Mark

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