DEZign Bolts VS Stock Bolt

[El Pirata]

I went to test the Stock Angel Bolt against the DEZign Venturi and Open Faced Bolts. The results were less than had hoped for as there were major inconsistancies between the readings. While the DEZign bolts were much higher in velocity from the same input pressure into my Angel the consistancy still left a lot to be desired. I am thinking I either am having a mini reg problem or the paint was very inconsistant. I will try next weekend with another brand of paint, probably something that's higher quality. While all were inconsistant you can see much higher averages for both DEZign bolts as well as each of their lowest was above the highest off the stock bolt.

Here are the numbers:

Stk DV DOF
292 319 316
305 316 327
296 318 330
292 317 332
289 316 327
304 319 311
285 328 314
305 320 317
301 309 330
303 327 315
299 317 327
295 316 320
291 315 318
307 310 315
285 314 326
299 320 312
298 325 318
297 317 335
297 326 330
292 316 328

Stock (Stk)
Highest: 307, Lowest: 285, Difference: 22, Average: 296.6

Dezign Venturi (DV)
Highest: 328, Lowest: 309, Difference: 19, Average: 317.85

DEZign Open Faced (DOF)
Highest: 335, Lowest: 311, Difference: 24, Average: 322.4

[welted]

you also might want to try turning your velocity down a bit. maybe it's just me, but i don't feel as confident in the chrono at high velocities such as 335. try chronoing the stock bolt to about 280, so the highest on the Open Faced is like 305. might have a little more consistency.

[sponge003]

Keep us posted

thanks for posting the truth and not skewing the data one way or another!

[El Pirata]

I had a another set of numbers for both DEZign bolts after I turned down the reg a little and got them below 300fps, well mostly. The numbers were a little more consistant but not as good as I had wanted them. Actually right after these numbers was when I noticed the valve moving problem and I think I lost that sheet of paper but hopefully I will find it tomorrow.

[DEZ]

I want to take the mini reg apart and see how she works .maybe I can find some parts that can be smoothed and polished to a mirror finish for smoother operation. I did this with Maxflow regs...I even lightened up the relief piston o ring pressure by re cutting the o ring groove by a few thousandths of an inch.

[Trigga Nometry]

If you haven't already, the best way to tell if there really is a difference in any of the bolts is to run it through a "student's t-test". That will tell you statistically if there really is a difference or not. It takes all the variance out of the numbers and will give you an answer as to what you really are seeing. The t-test is a very powerful tool for statisticians performing Design of Experiments (DOE) which is what you are essentially doing. I use it at work all the time when running R&D trials. This is a perfect example of when to use it.

The calculations are boring as heck (to the average non-geek) but the information is quite powerful.

Like I'd really have to tell you this but from looking at the numbers above, they are statistically different (duh!) but because you did not try to normalize them to say 300fps, it really doesn't mean anything. Try to run them all at close to 300fps (or any set velocity) and you'll have more meaningful data.

[El Pirata]

The second set of numbers was like that however I have not found it yet, honestly I have not looked that much but I plan on looking tomorrow, it's probably in my truck. The one thing I did want to show with the first set of numbers is the difference in flow between the stock bolt and DEZ's bolts which was shown.