So I chrono'ed my rig today. I'm getting 157 FPS out of the Tall Tines. I'm shooting 58#'s at 28.5", and a 572grn arrow. Is that decent? After making the move to trad archery from the compound it was a bit of a shock. I'm used to the 324 FPS the halon spits out.
It's decent, but on the slow side for that bow. Are you sure you draw 28.5 inches?
It will work no problem, but I would have expected more out of that setup at that poundage and arrow weight.
Bisch
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I would try another chrono or different daylight situation if you don't have a light kit on the chrono. I have gotten some strange readings without the light kit on mine.
I've also read to black sharpie your field tips.
Quote from: TheAbominableBowman on June 24, 2018, 09:38:00 PM
So I chrono'ed my rig today. I'm getting 157 FPS out of the Tall Tines. I'm shooting 58#'s at 28.5", and a 572grn arrow. Is that decent? After making the move to trad archery from the compound it was a bit of a shock. I'm used to the 324 FPS the halon spits out.
At 28.5" the Halon isn't hitting 324, especially with a hunting arrow. I don't even chrono my recurves usually. I think that's a little low for a TT though. I had one about that same weight, but I have a 31" draw.
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What kind of string are you running?
Seems on the slow side but did you scale the bow? I've seen some surprising variations between marked and actual.
Honestly sounds on the low end...but I've known of chronographs hurting a lot of people's feelings. They think they are approaching 200 fps, when the chrony says a whole lot less.
If you haven't done them already, there are lots of ways to improve performance. A big one that Rod Jenkins mentions on his site (www.safarituff.com) is work on your release. A good release can make a big difference in speed, noise, and accuracy. Get a well made string. A good string served to fit your nocks can make a good bit of difference. Tuning is a biggie also.
To get an idea of what your bow is capable of, you need to find someone with a Hooter Shooter. It won't short draw, make a bad release, vary, etc. Anything else is an (educated?) guess. Also, be sure your chronograph is properly calibrated and the light conditions and shooting distance is correct.
You also must stand far enough back from the first gate on the chronograph to make sure the arrow has left the string before the arrow crosses through the first gate or else you will get a slow reading! I would of guessed you would have at least been in the 170's!
I agree with Chad. It's possible you are collapsing at release. It's very easy to loose or gain 10 fps just from your release. I would expect your #s to be at lease 170
Quote from: Orion on June 24, 2018, 10:29:48 PM
It's decent, but on the slow side for that bow. Are you sure you draw 28.5 inches?
I checked my draw length with the indicator arrow thingy. 28.5 is what I was getting.
Quote from: sneakybow on June 25, 2018, 12:14:54 AM
Quote from: TheAbominableBowman on June 24, 2018, 09:38:00 PM
So I chrono'ed my rig today. I'm getting 157 FPS out of the Tall Tines. I'm shooting 58#'s at 28.5", and a 572grn arrow. Is that decent? After making the move to trad archery from the compound it was a bit of a shock. I'm used to the 324 FPS the halon spits out.
At 28.5" the Halon isn't hitting 324, especially with a hunting arrow. I don't even chrono my recurves usually. I think that's a little low for a TT though. I had one about that same weight, but I have a 31" draw.
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My draw length on the Halon is 31 hence the big FPS.
Quote from: A.S. on June 25, 2018, 05:25:24 AM
I agree with Chad. It's possible you are collapsing at release. It's very easy to loose or gain 10 fps just from your release. I would expect your #s to be at lease 170
This might be the case. That number seemed low to me too. I'm gonna check the brace height, wait for a sunny day and give it another go.
Quote from: TheAbominableBowman on June 25, 2018, 06:37:50 AM
Quote from: Orion on June 24, 2018, 10:29:48 PM
It's decent, but on the slow side for that bow. Are you sure you draw 28.5 inches?
I checked my draw length with the indicator arrow thingy. 28.5 is what I was getting.
I know many folks that when measuring their draw length they pull farther than they do when they are actually shooting.
Just a thought.
Have a helper put a mark at the back of the arrow at full draw and then have them observe for actual draw length when you shoot over the chrono.
Quote from: monterey on June 25, 2018, 10:00:39 AM
Have a helper put a mark at the back of the arrow at full draw and then have them observe for actual draw length when you shoot over the chrono.
Good advice! Gonna give this a try after work. From what I've been reading here and on other sites I'm definitely shooting slow. It could be from a number of different things but something surely is off.
I agree with others who say that your numbers seem very low for a Tall Tines bow. I would expect that you would be close to 170 fps with 10 grains/pound arrow weight and a clean release. Have a buddy shoot your bow and see if you get the same results. As others have speculated, there may be some issue with your release that is holding the speed down.
So my draw length is actually 29.5 and the chrono apparently hates the sun. I got a big variation in readings when shooting in the garage today versus outside.
Inside was more in like what the consensus was here: 181 FPS, 183 FPS, 185 FPS and 186 FPS. Outside it dropped back into the 153-157 FPS range.
Well, you didn't mention that part lol
Quote from: TheAbominableBowman on June 25, 2018, 06:39:04 AM
Quote from: sneakybow on June 25, 2018, 12:14:54 AM
Quote from: TheAbominableBowman on June 24, 2018, 09:38:00 PM
So I chrono'ed my rig today. I'm getting 157 FPS out of the Tall Tines. I'm shooting 58#'s at 28.5", and a 572grn arrow. Is that decent? After making the move to trad archery from the compound it was a bit of a shock. I'm used to the 324 FPS the halon spits out.
At 28.5" the Halon isn't hitting 324, especially with a hunting arrow. I don't even chrono my recurves usually. I think that's a little low for a TT though. I had one about that same weight, but I have a 31" draw.
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My draw length on the Halon is 31 hence the big FPS.
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I don't even bother using mine out in the sun
Those indoor numbers sound much more like what that bow should be doing!
Bisch
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Quote from: sneakybow on June 25, 2018, 05:52:25 PM
Well, you didn't mention that part lolQuote from: TheAbominableBowman on June 25, 2018, 06:39:04 AM
Quote from: sneakybow on June 25, 2018, 12:14:54 AM
Quote from: TheAbominableBowman on June 24, 2018, 09:38:00 PM
So I chrono'ed my rig today. I'm getting 157 FPS out of the Tall Tines. I'm shooting 58#'s at 28.5", and a 572grn arrow. Is that decent? After making the move to trad archery from the compound it was a bit of a shock. I'm used to the 324 FPS the halon spits out.
At 28.5" the Halon isn't hitting 324, especially with a hunting arrow. I don't even chrono my recurves usually. I think that's a little low for a TT though. I had one about that same weight, but I have a 31" draw.
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My draw length on the Halon is 31 hence the big FPS.
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Lol. Sorry. Left out that small detail. :biglaugh:
Quote from: old_goat2 on June 25, 2018, 06:15:16 PM
I don't even bother using mine out in the sun
I had no idea that was even a thing. Good to know.
Chronos need a diffused light, the light kit has cardboard that reflects the light to the chrono. Not direct.
You can get some wild numbers in sun, direct light or too little light.... I thought I built a world class bow once , then found the chrono was lying... :laughing:
Don't shoot deer in the sunshine! :saywhat:
Charlie, I gotta mess with sumpin the 8 months that it aint bow season.... :biglaugh:
This thread got me remembering my old chrony and today being overcast I did some velocity testing on my toelke recurve.
Chrony used was a shooting chrony - green one.
Hold - split finger with American leathers bigshot glove.
Arrow weights -
1) Beman ICS 340 full length with 100 grain insert + 145 grain field + 2 inches of 2117 footing + fletching and wrap and nock- 583 exclusive of last 3 - say 600 grain total
2) Beman ICS 340 full length with 21 grain insert + 145 grain field + nock + fletch -493 grain total
3) black eagle full length 300 + 50 grain insert + 145 grain field + 2 inches of aluminium footing + cresting and fletching and nock - 558 appx total
4) black eagles with standard insert 558- 29 grains
5) arrow dynamics heavies around 540 grains.
The bow kept all arrows nicely around 166 fps ,not 190 as I was expecting. That said while velocity testing she shot a peach of a group with me focussed on readout.
Update - Dan said that I was short drawing and I was - I was almost 2 inches under drawing. Now back to the drawing board.
Yes...had me scratching my head for a moment.??? Lol....even my 43# Wing gets close to 170fps. Speed isn't the sole measure of lethality. But a bow in the 180's will get it done easily..!