A question before new Crown arrives

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Bob_O

Bob_O

Member
Dec 19, 2017
5,132
109
MICHIGAN, United States
Hello everyone. 

I've done lots of research in existing threads on tuning the Crown. Watched nearly every video I could as well. All this to prepare for the arrival of my new FX Crown 22, expected mid-day tomorrow. From tuning the WC MKII I had, as well as doing all my homework, I have a full grasp on adjusting the regulator and power (HS) wheel. What I am not sure of is the transfer port dial. I've read in a couple of posts - sorry didn't bookmark the threads - where the tuning should start with the transfer port dial on the highest (wide-open) setting, which would be the .25-.30 caliber setting. This does makes sense to me but I wanted to ask this question specifically since the majority of the information I found did not specifically recommend this.

After adjusting any excess play from the Hammer Spring adjustment screw, is there any good reason I shouldn't start the tuning (reg pressure and power wheel) with the transfer port setting on .25-.30 caliber?
 
Hi Bob , the Hammer spring adjuster has to have no play to get most out of gun. The gun can be tuned many ways in .22 cal , Higher pressure short burst or lower pressure and a longer burst , I found with .22 cal Keeping Reg as low as possible for your shooting makes gun more accurate , due to less harmonics . Congratulations on New gun post pics LOU



P/S will you be using slugs or pellets ?
 
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Thanks jw.

I'll definitely run a shot string at whatever pressure it comes right out of the box and see what velocity I get. Maybe it will be good without having to adjust the regulator.

Do you have an opinion on trying it with the transfer port dial in the .30 caliber position? It would seem that a larger port might lend better to the lower reg pressure/longer burst combination.

Just wondering what the guys with the earlier Crowns did, when the dial was marked 1 - 2 - 3 instead of by caliber.

I'll be using 18gr JSB pellets until the slug liner arrives........a month maybe?

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Bob here are some strings where I used the TP and power wheel settings with the reg at 150. This is how Mr.Rowe set it with the new hammer. He said "to many people play with the reg.set it, leave it, and use all the other adjustments" He reads these threads and said the "once you reset the reg it can take up to a tin to settle it down again not a few" Needless to say? I have left my reg at 150! hope this helps



Have fun Bob. You are used to quality, you won't be disappointed

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I would not take out play on the hammerspring without shooting trough a chrony. You might end up with to much hammer force if you do, and the max settings on the wheel will have no purpose. For example if you do not gain any more speed after setting 4, or 5 on hammer wheel, there is litle reason to increase the force further. I do not own a .25, but I believe with the .22 shooting normal pellets, it is no nescesarry to adjust the hammer with as much force as a .25 would. .22 usually require less reg pressure.

I have not played around with every setting on my crown, but I know some use the .177.22 setting instead of the .25.30, when they want to lower the velocity just a tiny bit. Like if going from setting 5 to setting 4 on powerwheel, one can instead stay on setting 5 and use .177.22 on transfer port, and see if the velocity ends up inbetween, on what 5 and 4 would with max transferport setting. 
 
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I took up SOME of the slack in the power wheel adjustment. But not all of it. You can see how much is left if you look at the gap towards the front of the gun while you adjust. I found, as mentioned before, that if you take out all the slack, you get your hottest adjustment about 4 on the wheel. So 5 and MAX are just putting pressure you don't need and isn't of any benefit to the adjustment.

So with most of the slack out, I get higher vel on MAX and less as I go down. But, my Crown .25 came with the reg set to 125 bar. I bumped it up a little at a time as I went forward on the HST and found a really nice shooting sweet spot. I can put it on 4 for that spot with the 25 gr pellets and then put it on MAX for the 33's and get the same sweet sounding harmony from the gun.

But shoot it first. I know you have ton of experience and know what you are doing. But I did find that my Crown didn't "settle in" for maybe 2 full tins or maybe 500 shots. Haven't chrono'd it in a while but I think it is shooting the 25's around 900 and the 33's around 800. Both have a very small ES. Great Gun. One of my fav's. Very accurate out to 75 yards. Ask Centercut :)





Crusher


 
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I took up SOME of the slack in the power wheel adjustment. But not all of it. You can see how much is left if you look at the gap towards the front of the gun while you adjust. I found, as mentioned before, that if you take out all the slack, you get your hottest adjustment about 4 on the wheel. So 5 and MAX are just putting pressure you don't need and isn't of any benefit to the adjustment.

So with most of the slack out, I get higher vel on MAX and less as I go down. But, my Crown .25 came with the reg set to 125 bar. I bumped it up a little at a time as I went forward on the HST and found a really nice shooting sweet spot. I can put it on 4 for that spot with the 25 gr pellets and then put it on MAX for the 33's and get the same sweet sounding harmony from the gun.
Click to expand...

Yes, that is what I will be looking for if it doesn't do it out of the box.

The sweet spot is what I achieved with the WC......so no matter which pellet I shot (25.4gr or 33.95gr), I had a good velocity for each, which was very important being no external hammer spring adjustment. I will be in a better situation with the Crown being I can tune for the best performance out of the heavier 18.1gr pellet, and then go down from Max HS setting if I need to for the 15.89gr pellet.

allen,

Utah Airguns installed a pic rail section for me. No mention that it would void the warranty but I didn't ask. I would have installed one myself anyway. I'm not afraid of a complete tear down to replace o-rings or parts if necessary. I'd rather do that myself than be without a gun for weeks.


 
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