Originally Posted by Word?
For anyone thinking of posting please read this post or do not post at all
Here's the problem. I have went through an entire case of paint. Testing every possible dwell/pressure combination. The bolt is still unable to reach a velocity greater than 260 consistently and is FAR too rough on paint.
It is a bummer you are having so many problems with what is such a great product! Though the Eigenbolt is pretty well known as a "tinkerer's bolt," I haven't seen anyone have as much trouble as you.
The first thing I wondered when I read your posts was if you remembered to remove the rubber tip from the stock bolt and place it on the Eigenbolt? I've seen firsthand someone forget that step and have pretty much exactly your symptoms.
Also, when tuning, I wouldn't start with firing paint right off the bat. Set your dwell to stock (7ms). Forget about "sweet-spotting" your back cap for now. Just turn it all the way in, and then 1.5 turns out, and set your lower reg pressure to about 165ish and see if it appears to be cycling correctly. If not, you might need to tinker with some smaller o-rings in various places.
A smaller o-ring on the outside of the spacer will reduce the bolt's ability to "never chop," but it also will lessen the amount of grab that spacer o-ring has on the back flange of the bolt.
Next, you can experiment with smaller o-rings on the bolt guide shaft itself. You don't want the bolt to wobble on the guide shaft, but you definitely want it to slide freely.
Last, I've read on here where someone went the extra mile and used a cloth with a bit of brasso (I think?) on it to rub up and down the bolt guide shaft and remove just a little bit of the o-ring's outer surface, to quickly break it in. Clean it well and re-lube before putting the bolt back on.
Definitely don't waste any more paint until you get it working. Good luck!