Schafer speed....Can these numbers be right? new #'s pg 3

[hybridbow hunter]

Folks, these numbers cannot be true...

If you tell us 58#  bow drawn at 28,5 and a medium speed is 228fps that means your KE= 52,65

your recurve (assuming it is a top of the line one) will have a store energy per pound of draw force at that draw lenght more or less 0,9 ft-lb/lb and a dynamic efficiency for 8 gpp less than 80%

so if you draw 58# your bow will store less than 58 X 0,9=52,2 #
and give to the arrow once you release less than 52,2 X 80%= 41,76 ft-lb of KE in front of the bow.

With a 460 gr arrow , to reach a KE=41,76 ft-lb you will need 203 fps.

My numbers in SE/PDF and dynamic efficiency are on the optimistic side...

[wv lungbuster]

Yeah what he said  

[pete p]

sounds like you got a nice bow there. the chrono is off though im guessing.

[Jack Whitmire Jr]

I'm a Schafer lover but those numbers are off IMO.

[Bowwild]

L.E.
If your Schafer is that fast you want to be very careful and make sure the timing is the same from limb tip to limb tip....LOL -- sorry, I couldn't resist throwing a little compound humor atcha.

[Shawn Leonard]

Soory, but no!! I had a Schafer that I drew to 29"s and shot 9gpp. and it was a 195 fps. bow which is quick but your numbers are impossible. I have a very fast RER that even drawn to 32"s and shooting 8.5gpp. can do only in the 220 range and this is the fastest bow I have ever owned. Shawn

[JohnV]

Those numbers are waaaayyyy off.  I used to have a Schafer 62" takedown built by Dave for fast flight.  It was a nice bow and shot well but it was not the fastest of the various bows I have shot.  I would rank the Schafer as "above average" for speed but would not put it up against ACS or Black Swan bows.

[Orion]

I agree with Bjorn.  The chrony is off.

[Guru]

'Tips are great bows, fast yes...but no way it's that fast, even with those light arrows.

Chrony needs to "dialed in" I believe    

[Dave Alaxanian]

My Bob Lee 63lbs@30 ,W/650g arrow blows through at 192fps.---And I thought that was smokin--With your very lite arrow and all that juice behind it it must sound like an M80 going off

[Sixby]

I have my doubts, but there are a lot of variables that you would not have in an actual test with a mec release. That just seems to be too fast to be a realistic number. I could believe 205 possibly , and that would be a super fast bow, Maybe 210. I am having a tough time with the 225. I think the bow is fast but the chrono is a bit faster. God bless you all, Steve

[Pete W]

For those numbers to be good the draw weight,or draw length, or arrow weight or all of these are not right.
 If the above are correct check your lighting.

 Pete

[L. E. Carroll]

I'll put 'my' crony up in the AM , if it's not raining, and see what mine says... Probably see something different.. I'll post my findings.

Gene  

[myshootinstinks]

Hi Gene,
   I've owned two Silvertips that were nowhere near that fast. Fly in the soup there somewhere.  

[Straitshot]

Gene,

I have two Schafers. Both are fast flight bows. The newest one has the thin black lamination you are talking about and the older one does not. The older one is a 62" bow and the newer one is a 60". They are both about the same poundage. I have never had either one chronographed so I have no idea how fast they are. They do seem a bit faster than some of my bows but not as fast as others.

My understanding is that lighting can affect a chronograph's ability to read. I think I would try it again and adjust the lighting.

Louis

[Michl]

Is it a Schafer with wheels?lol  :D

[Auzoutdoor]

I had a play today with some lighter arrows at 8.3 GPP and at 61 @ 28 got 210 average over 5 shots.At 10 GPP 190 FPS and even with the lighter arrows bow is quiet and smooth.Its good to see development going on with the trad bows.
Cheers KIM

[hvyhitter]

Its the lighting and the crono....a few years ago a few of us were at a shoot that had a crony set up, we all shot through and got 165-190 with different bows, then one of us shot a whopping 240 and blew us all away. After passing the arrow around we found that there was something about that arrow that the crony just liked and read about 50 fps faster....how mant HH longbows do you see that shoot 205 fps.

[L. E. Carroll]

OK, the sun came out, and here are the #'s from my crony... The light arrow I used in previous test was between 197 and 204 fps and one weighing 564.3 [ just a tad over 10gpp] is consistant at 188-189 fps... these are very realistic numbers and more of what I expected before shooting at the local shop.

I guess lighting really does do strange things to a crono.  

[BlackDog]

I have a set of limbs built last year that have the black lamination running full length under the back veneer. Also has the black lamination on the belly side next to the fadeout only, just as you describe.

 My older set of limbs (04' I think) only has the black lam running full length on the belly side under the veneer.

 I only assume it's a piece of carbon. Anyone know for sure??