This is just an update for those who may have wanted to see actual measured speeds. If you got your fill on the other thread just move along

OK, I spent a couple hours with a chronograph today with both the Allegiance and the LX. I shot several arrows at each weight to obtain an average speed. Here are some of the results with 27 3/4" DL at 63 lbs with a few different arrow weights:

-----------------------------------315 gr. 350 gr. 449 gr.
Alley 63 lbs, loop, peep, silencers -- 292 fps 279 fps 253 fps
LX at 63 lbs., loop, peep, silencers - 273 fps 260 fps 235 fps

I plan to shoot 3D this summer at 63 lbs. and am looking at 293 or 294 fps with no silencers on the string.

I set the Allegiance at 70 lbs. and shot with the peep and silencers still installed and got 294 fps. I then removed the string and cable silencers and got 295 fps. I was suprised to only gain 1 fps from removing the silencers. I next removed the peep to get a true bare string speed with only the loop and got 298 fps. This is one fps slower than the stated speed on the birth certificate. In my previous post I assumed another 5 fps for the removal of the silencers but actually gained only 1 fps.

Alley 70 lbs., 350 grains with only loop - 298 fps
LX at 70 lbs., 350 grains with only loop - 283 fps

Recalculating the dynamic effeciencies with the actual measured speeds puts the Allegiance at 80.7% and the LX at 78.6%. This puts the virtual mass for the Alley at 83.7 grains without a peep and 92.5 with a peep.

The Allegiance sustained more speed than the LX when dropping from 70 to 63 lbs. and shooting the same arrow. On a 350 grain arrow the Alley lost 17 fps over 7 lbs. where the LX lost 21 fps over 7 lbs. The Alley was also more efficient when shooting 5 grains per lb at 70 compared to 5 gpp at 63 lbs. The following were taken with a peep and loop but no silencers:

---------------------------------------70/350 gr. --63/315 gr.
Alley at IBO arrow weight of 5 grains/lb. - 295 fps ----293 fps
LX at IBO arrow weight of 5 grains/lb. ----280 fps ----274 fps

I have never seen a bow before that only loses a few fps when dropping weight and staying at 5 grains per lb?

One other interesting note: when switching back and forth between bows while shooting the arrows through the chrono it became very evident that the Allegiance had much less vibration and was quieter than the LX. Both bows had sights and stabilizers installed. I borrowed a chronograph from a friend and don't really know how accurate it is. But for an apples to apples comparison both bows were shot with same arrow back to back several times.

Below is new graph using the measured speeds listed above: