I did a test yesterday.
With no pressure in the line and gun closed, cold start it had no problems getting rpm’s and bypassing to buffer.
With pressure in the line and warmed up it just cranked a couple times and locked. The starter motor just doesn’t have the force to overcome 3000psi and bypass to tank.
I’m using a ZK1 flow unloader. Maybe that’s the difference?
Ooohhh yeah, I use a trapped unloader. Yeah man that’s cheating lol.
So if you release the pressure and then try starting it, will it still lock up?
Switch. You’ll never go back. I can’t imagine feeling like I’m kicked by a donkey every time I squeeze the trigger on a trapped unloader. With my 4/4 it was a lot and wasn’t pleasant. I can’t imagine it on an 8.
If the motor catches right away and no pressure in the line it’ll kick over to bypass.
I’ve thought about a ZK1, just haven’t got around to getting one installed. I’ve heard reports of it having issues so not in a huge hurry.
I’ve had one for 2.5 years and another one for 2 years. Both going strong. No issues.
I remember a couple years ago one or two people complaining about them but I haven’t seen anything recently.
I seem to remember people having issues with downstreaming and bypassing pressure, probably more of a setup glitch.
I believe the K7 is the finicky one of the bunch….K1 seems to work well.
It’s nice to wake up in the morning without feeling like my hand got slammed in a car door. Only regret is not making the switch sooner.
