A T19E1 Delta dev build - iFlight Xing-E 2207; ACE-NX; experimental 9.0mm Hy-Con wheels; new full length breech.

My new general purpose rifle; perhaps.

 

 

This is the test build for a whole lot of new stuff which will be expanded on and released in 2 other posts, one for the blaster hardware, and one for the ACE-NX motor drive.

 

First of all, this contains the very first test pair of ACE-NX boards. The reason I have been quiet on that front has been validating them, namely, with this. Sure, there are dummy loads and spinning up random cages and such, but there is nothing like a real closed-loop build shooting real darts and running some nasty, torquey, near-kilowatt range modern motors to know whether an ESC can really hack it on the last margins. And so far, I'm satisfied.

 

 

 

The other big thing: a new full length breech. This was a long time coming - the old one didn't match the new shorty breech's styling as well as lacking the new thicker 7mm drive section and cage flanges and using an outdated, stock-blaster-style mag overtravel stop approach which technically prohibited having a cleanly flared magwell opening.

This unit fixes all those issues and harmonizes everything, while maintaining the same inverter compartment dimensions, and using the same covers and mag releases. Some incremental round control/feeding improvements were made as well.

As a consequence of some feed ramp improvements up front, and the inverter compartment length needing to stay the same despite the 7mm flange thickness to still put our big beefy controllers in there, this breech is now slightly longer than the Early-style full length breech. Thus, the rear top rail segment now has a third version.

 

 

  

This should seem familiar to anyone who has seen a short dart T19.

 

The magwell dimensions (and distinctive non-trapezoidal-ness, incidentally) are unchanged from the original. While some mags are rattly in T19 magwells, that doesn't matter to round control or feed reliability; and we really do not want anything fitting tightly. FDL-2 and -3, Foxfire and several other blasters have Icarus'd that and created compatibility problems with certain mags (Gen2 Workers, in particular) to the point of making the follower stick by chasing after that nice precise-feeling lack of clearance. That works with the shorty setups, since Talons are pretty well a tight standard, but full length mags have about 15 manufacturers, and many of the mags out there have been getting kicked around fields for the last decade or more.

 

 

And the OTHER other big thing going on is in the cage.

 

I'm always cooking more motor options, of course, and generally I'm aiming for a balance of cost, availability, futureproofness if possible, torque, build quality and favorable mechanical design for a flywheel application (more on that later). But also, there is a trigger response meta afoot in large format flywheel development, and so I wanted to make sure some of the motors my blaster supported were thoroughly modern in magnetic design while also being relatively large stator and thus very torquey.

 

The main contenders I evaluated for this were the Emax Eco 2306 and 2207, Emax RSII-2306, a few motors of the DYS Samguk series, and iFlight Xing-E 2207 and 2306. In the end I went with the iFlight. More on that later too in the parts release post. A single cage design supports both the 2207 and 2306 variants with only a flywheel change and the existing Racerstar BR2207S cage cover and shaft end plugs are used. This unit is running the 2207 in 2450kv wind. There are 2750 and 1800 (IIRC) as well, so there is room with them for higher speed for multistage setups on 4S, as well as optimizing either the single or multi case for higher bus voltage such as 6S.

And the other other OTHER hidden thing is that this unit is running 9.0mm wheels and a matching modified "9.0 ready" version of the Delta cage with the groove fillers shaved just a tad. I started out very skeptical of the 9.0 the first few shoots with it, but after getting some more trigger time on this particular gun, I have warmed up to their viability almost entirely and I don't think I'm going to be changing them any time soon.

Protip: It helps to use some halfway decent ammo before forming an opinion of a blaster... Never judge a book blaster by its cover groups with field scavenge garbage. Also protip: Things tend to shoot slightly like crap when they aren't broken in.

Anyway, the 9.0s are not a huge change over the good old magic-number 9.5. They pick up, at absolute most, 10fps with used ammo (more like 5 or 7 typically), and with new ammo and the speed dialed in just right, reaching 200fps is not out of the question. What is interesting is that decap rate between this 9.0 gun and my other 9.5 units is about the same.

 

 

Am I forgetting anything? (Yes, a minor S-Core firmware revision.)

Out, will be back again very soon once I round all these pesky files up.