Todd from TechT here. I apologize for not coming to the nation more often.
First off Id like to say thank you to all the people that have given our bolt a try.
If you've read this far you heard from some people who have had good experiences and some with bad.
Since the all of their releases (Ion, PMR, DM/PM L7's) we have been constantly updating our design and setup instructions.
We have made recent updates to the PMR L7 that have made it more consistent and more air efficient. It now comes with top-hat mods that allow you to pick the pressure you run at....from 145 to 200 psi. Fully adjustable. Perfect for those who like low pressure operation....to those that like high pressure.
The DM/PM L7 bolt has been tough in the setup department. Many people have trouble understanding how to really set the marker up, and I am assuming a large level of responsibility here.
I was having people restart their dwell really low....too low for any DM marker and having them try to set the gun up. My setup instructions of a dwell of 5-10 worked great for PM6 and Minion owners....but was hell for DM owners. Rather impossible.
While one setup will work well for the PM6...one totally different is needed for the DM. I’ve found with my DM6 that a dwell of 15 gives me good consistency and efficiency. I’m doing more testing this week to see if I can really get the dwell lower. But for now...with the stock board on a dm6 a dwell of 15 works really well for me.
The new setup for DM 5 DM6 and DM7 owners is now.... start with a dwell of 18, LPR 4-6 turns out (the minimum of what ever it takes to keep the bolt back in the breech), and whatever input pressure that will make the marker shoot 280-300 FPS. I’m now would have people test fire and chrono their marker and then play a game. Thats right...a real game..on the field with a dwell of 18, LPR high enough to keep the bolt back, and and input pressure to get to the desired fps.
If the consistency is good (accuracy), after the game, lower their dwell by one flash. Then go play another game.... see if the change in dwell noticeably negatively affected the consistency (accuracy). If not, lower the dwell again by 1 after that game. Continue to lower and test until you notice a loss of consistency at low and high rates of fire. At this point you need to increase your dwell back up to regain the consistency. I would go up one to two flashes in dwell just to be safe.
That pretty much the easy way of setting up this bolt perfectly.
Before I was telling DM owners to start at 5 and work up....but Im sure by the time they got to 15 they thought something was wrong...and probably only took the dwell to 10 before taking it out of their marker thinking something was wrong. "The online instructions said it should work at 5....my doesnt....its broke!" I think this is what happened to alot of people. Its understandable too, I would have thought the same.
I wish I had told people to do it this way from the beginning, but you live and you learn right. So if you've read this far, be a help, and spread the word on how to do this setup. It’s the no brainier way of making it happen. No guesswork, frustration and confusing trips to chrono or backyard.
We are also working on spacers for the DM5, 6,7,8. They will be available in about 2 weeks. We have had some trouble getting all the DM solenoids to operate at what the bolt naturally wants to operate at with no spacers...90 psi. That’s right, with the DM5,6,7,8 or bolt operates at 90psi. We have found that it too low for a few of the DMs solenoids to operate at. At this pressure they would half cycle. So we have introduced spacers to get the pressure all the way up to 145...stock bolts pressure. With the spacers the L7 had a standard deviation of about 3 to 3.5 fps. The stock bolt with the same paint and barrel had a standard deviation of 6 to 6.5 fps. Both bolts used right at 3.6 pounds per shot in a 68ci tank. When starting the test with the bottle pressure right at 1500 psi.
I’m telling you all this because I want you to know that I am still doing the testing to make this bolt, and more importantly, the setup for this bolt better suited for the DM line of markers. I think we're there with the most recent change of set up instructions, but only time will tell.
I hope this helps some people.... because it took some time to type.....not really...only about 30 mins
Peace out GUYS.... any suggestions for products or my website.... shoot them to firstname.lastname@example.org