Technical Analysis of the HW100

[tgif]

Hi again,
I have balanced the reg and hammer spring as this thread indicated and now I am very happy with the spread over the 80 shots...

Min Vely 569.00 fps
Max Vely 581.00 fps
Spread 12.00 fps
Average 576.07fps
Stndard deviation 2.27

Average power 11.7 ftlb

However I am still concerned about the small number of shots does anyone know what could cause this problem?

Cheers
Tom

How did you get the deviation: randomly jumped, or the fps increased slightly as the pressure went down in the cylinder? What kind of pellets were on the test?

[guido]

so how high can the HW100 in 5.5mm with the long FAC barrel be turned up to while still retaining some good consistency?

[Keyrigger]

Without the pressure readings from a regulator that has been adjusted to maximum output (from the long barrelled version), it will be hard to tell. I am sure that there is a practical limit as the rifle sits until the Belleville washer pack is either, re-arranged, or a few additional washers are added. Most of the washer stacks that I have seen, all are set with three going each way, which is the practical limit that the washer developer has stated. More than that per direction and the washers will not work properly.

There will be a point that it is more logical to remove the regulator completely and use the tuning of the rifle's power curve with striker springs, striker weight, etc, etc, just like you would with an AA 400 series rifle. My personal take on it would be that if someone wanted more power, they should buy a Daystate Air Wolf or an Air Ranger. Of course, the 37 ft lb energy I get from my AA 410 E is no slouch, either.

[guido]

but the S410ERB does not have a very useable power curve unfortunately...at least mine doesn't

I will leave theis HW100 as is since it is sooo accurate

Getting a 30-40ft\lbs Rapid 12 anyways..

[Keyrigger]

At full power, I was getting about 30 shots. I reduced it to 23 ft lb and I am getting around 50 usable shots per fill, of which 35 are within 15 fps. Mine is not the ERB, but the older non-adjustable Extra Hi Power. So much for non-adjustability, lol. I do agree that getting a rifle meant to fire at high energy levels is the best answer to wanting the power to make those long shots possible. I hope that you are able to get a couple of pellets that allow you to tap into that power.

[guido]

The 23" FAC barrel gives 870 fps with 16 gr JSBs.
The 16" barrel does 815 fps.

Seems like the extra 7" of barrel only adds about 60fps.

This leads me to think that the HW100 can be turned up a little more with the 23" barrel?

[Keyrigger]

I'm sure that you could push it to a bit over 900 fps, and maybe as high as 950, but your shot count will greatly suffer. The one thing about Belleville washer stacks is that you must operate them within the range that at full compression, they are not collapsed or totally flat. There is a practical limit to which you can set any regulator, and I am fairly certain that the HW regulator is set close to its maximum level. For certain, you will seriouly drop the shot count and I would take a guess that you will get no more than 20 shots before having to refill. Of course, that is part of the fun of getting the most out of your airguns.

[zorro63]

Hello.
I am of Spain. I am a new member of the forum. I feel my English, use an Internet translator.
I have a HW100 in caliber .22 is a magnificent weapon.
It wanted to know as of it accedes to discs of wharf of the regulator of C3. By where there is to disassemble to accede to such.
Thanks

[maxilius]

Sorry for my english. I am Italian

In my HW 100, pellet probe D3, not have a hole. It is all fill. Why?
air flow trohgh where
tanks

italiano:
nella mia hw 100, ll posizionatotore del pellet, non è bucato. é tutto pieno. Perche?
il flusso dell'aria da dove passa?

grazie a tutti

[maxilius]

D - Action Block Back:

This portion of the action contain the pellet probe linkages, the magazine indexing and hammer mechanisms.




At a glance, the HW100 pellet probe D3 look similar to the one in the QB with a hollow center and a hole on the on the side. The side hole is directly above the port.
On closer examination, the HW100 probe is a lot slimmer and the probe tip have very thin wall and nicely chamfered; which should make it one of the most efficient probe designs.
The probe does not have a O-ring seal like many other air guns. The probe sealing O-ring is inside the breech instead.

Sorry for my english. I am Italian

In my HW 100, pellet probe D3, not have a hole. It is all fill. Why?
air flow trohgh where
tanks

italiano:
nella mia hw 100, ll posizionatotore del pellet, non è bucato. é tutto pieno. Perche?
il flusso dell'aria da dove passa?

grazie a tutti

[Keyrigger]

It is possible that HW did that on early rifles and they may have found that it is not needed. Many manufacturers of rifles do not drill the bolt probe out like it was done on the HW, but make the probe smaller so it allows just as much air to flow to the base of the pellets. It is a design chaange, not a problem. Hope this answers it.

[maxilius]

grazie

tanks

[les175]

It is possible that HW did that on early rifles and they may have found that it is not needed. Many manufacturers of rifles do not drill the bolt probe out like it was done on the HW, but make the probe smaller so it allows just as much air to flow to the base of the pellets. It is a design chaange, not a problem. Hope this answers it.

Mine is the HW100S .177 cal.. new in late September 2007. It DOES have the hole in the probe.... the probe is about .115 in is diameter and the holes are very small..... hard to see unless you take it apart.....
Les

[Keyrigger]

Thanks, Les. Interesting about the variations out there.

[maxilius]

Mine is the HW100T .177 2007/09 SN 19099XX