R2A chrono

[cornish guy]

Hi
I have followed your instructions and fired a shot that read 802ft/sec showing gun needs adjusting as this shows it has drifted just over 12ft/lb, the problem I have is after firing a shot on this new chrono it shows 802ft/sec and 9.30 above I then pressed s2 and it still shows 9.30. How can I get to ft/lb or does mine have a fault.
Thanks

I've got the R2A and I also found the instructions to be lacking in information. It's actually quite simple though. The main setting which I found the instructions didn't explain clearly was setting the pellet weight. Once you input the weight it's very easy after that.

Before using the chrono however, the instructions recommend you set the 'gain' to high for airguns. I don't know if it makes much difference but to do so, firstly when it is switched off press and hold S1 and S2 together, then switch it on, if it displays GN:HIGH then simply take your fingers off the buttons and switch it back off and on again and it's set. If it states GN:LOW then keep S1/S2 pressed and switch off and on again and then it should display GN:HIGH. Take your fingers off the S1/S2 and switch it off and back on again and it's then ready to go. You should only need to do this once unless you also use it with firearms where you would alternate it.

To then start using it you will need to set the pellet weight. Firstly switch on and the screen should display V(fps)00. Then press S2 twice until shot00 is displayed. Then press S1 and the weight settings will display. Press S3 to increase the weight figure or S2 to decrease until you arrive at the correct pellet weight. Once the correct weight is set, press S1 again and then S3 to quickly get back to V(fps)00 again.

You're now ready to start using it. Fire a shot through the opening centrally and as parallel to the sides/base as possible so the pellet flies straight through. I would also keep the muzzle a few inches back to avoid any muzzle blast being measured. The chrono will then display the velocity in fps. If you press S2 it will display the muzzle energy in ft/lbs (E(fpe), press S2 again and the shot number will be displayed i.e. shot 01 for the first shot etc, S2 again and the average energy will be displayed (Eavg), S2 again for the average velocity (Vavg), S2 again for min velocity (Vmin), S2 again for max velocity (Vmax), S2 again for absolute velocity i.e. the difference between the highest and lowest velocity in the shot string (dV), S2 again for standard deviation (SV), S2 again and RPS and NR will display (concerns rate of fire so not really relevant for airguns) and at that point press S3 to return to the beginning. If you want to erase the measurements at that point you can press and hold S3 or just switch it off and back on again which I find easier.

You can also link it up to a PC to transfer the shot measurements but I've not tried that yet.

I hope that helps!

[Halesowen Kid]

Hi Cornish Guy,

That sounds odd to me, so my I suggest you email the manufacturer direct and put your question to them.

I've found them very helpful when I've had any queries and they are fast to respond too.

Mike

[partner k1250]

Has anyone had experience with the Polish R2A chrono,I seem to be having trouble setting mine up,the instructions don't help,any advice would be welcome (other than buy a different one)it's please help before I go nuts!!!! Stuart.

mine just stopped working can they be repaired ?

[gc93]

Has anyone had experience with the Polish R2A chrono,I seem to be having trouble setting mine up,the instructions don't help,any advice would be welcome (other than buy a different one)it's please help before I go nuts!!!! Stuart.

hi, there's a vid explaining setting up on the tube , if I remember right punch in POLISH R2A CHRONNO