Follow along - EOD Steve's Work Log
 

I thought I would start documenting a complete build-up of a brand-new VFC M4A1 RIS II FDE (aka M4A1 block2)

Follow along on this build!

http://hudsongravity.com/wp-content/...6-1429x960.jpg
http://hudsongravity.com/2016/05/24/new-project-vfc-daniel-defense-m4a1-ris-ii-fde/

The mechbox teardown and review.

http://hudsongravity.com/wp-content/...1-1440x960.jpg
http://hudsongravity.com/2016/05/27/block2-build-teardown-mechbox-overview/

A quick grip stippling before mechbox work.
http://hudsongravity.com/wp-content/...7-1440x960.jpg
http://hudsongravity.com/2016/05/28/block2-build-grip-stippling/

Mechbox build-up is complete, see it here:


http://i2.wp.com/hudsongravity.com/w...ize=1440%2C960
http://hudsongravity.com/2016/05/29/block2-build-mechbox-buildup/

Also knocked out the barrel group today.


http://i1.wp.com/hudsongravity.com/w...ize=1440%2C960
http://hudsongravity.com/2016/05/29/block2-build-barrel-group/

I'm really liking the blog format of the new site, and that rifle is definitely a piece of work ... thanks for the new bookmark and I can't wait to see what comes down the pipe next.

It is done. Paint + final chrono numbers.

http://i2.wp.com/hudsongravity.com/w...ize=1440%2C960
http://hudsongravity.com/2016/05/30/block2-build-paint-and-final-chrono/

I'd love a 'Like Button' on here. Excellent amalgamation of info, and an excellent looking build

Another build starting up, but first an in-depth review of the HAO Geissele HK416 SMR rail compared to the real deal.


http://i2.wp.com/hudsongravity.com/w...ize=1440%2C960
http://hudsongravity.com/2016/06/01/hk416-smr-real-steel-geissele-vs-hao/

A comparison between the ASG Ultimate U-18000 motor and the SHS High-torque.


http://i2.wp.com/hudsongravity.com/w...ize=1024%2C682
http://hudsongravity.com/2016/06/02/motor-and-pinion-gear-swap-comparison/

Thread stickied to keep it near the top, I'm liking this one.

I like this thread too. How's the asg 18k motor compare build wise to the jg blue ones? Tpa same I think. Is the arm skewed in the asg motor?

Isn't JG Blue 22 TPA? ASG is 28TPA.
Haven't torn the motor apart to be honest so I couldn't tell you if it's skewed, that's another post for another day when I'm less flooded.

Magnets on the ASG are quite good, on par with Tienly and SHS HT.

Hmm..? Maybe it is a 22tpa? Don't remember which arm I pulled from mine..?

Reading about the motors in this comparison, what would be a HT motor that has good meshing with Siegetek gears (or just use a Siegetek pinion) that is low power consumption?
Price not an option.

A hand-built frankentorque.

Off the shelf? I think Ziming and I both agree that it's the Tienly 30k, maybe if they come out with a slower motor, it'd be that.
The ASG meshes well with a Siegetek pinion, it's just the motor itself is somewhat noisy. But paired with fast gears and a fully charged battery, it would be much harder to detect.

For the time being, I'm giving clients the option of either motor (ASG or Tienly) given their different characteristics and applications.

I did a zci/siegetek 20:1 build recently that was pretty quiet. Not super quiet like my all shs build on my g36, but I've been having issues finding high torque, low amp draw motors with a straight pinion to try the seigetek pinion. ASM guys tell me I can put a siegetek pinion on a D shaft with some pressfit loctite, but I have not had any luck as it just ends up sliding on the shaft of the shs motor I tried it on.

I'm not sure I would trust something like a pinion to a chemical bond.
If you like the can, why don't you just swap the arm with a higher TPA one from some random ferrite motor? Sounds like you already had the pinion off already.

Not every ASM user is very intelligent... There are a lot of good guys there, but its mostly the elitists who think they're better than the rest of the community.

When you put an O pinion on a D shaft, chances are you are only getting 3 points of contact, and not a full round surface. The idea of a chemical bond is also unappealing to me.

My quietest setups are those that use SHS motors with SHS 12:1 and 13:1 gears, as well as Siegetek builds with 10:1 using Gen 2 bevel paired with a Tienly 30k with Siegetek pinion mounted. ASG 18k seems to be a decent motor, however the housing is slightly larger than a standard one and the motor seems to cause more whine, regardless of bevel height. I need to spend more time looking into the root cause of that.

don't have any higher tpa arms in my bin of abandoned motors. At least none that are 22 or better.

Raid your local shop for dead G&G Combat Machine motors. The ones with grey cans and black endbells are actually parts compatible with SHS motors. They are 28 TPA and use O type pinions.

The HK416 rebuild starts:

http://hudsongravity.com/wp-content/...ize=1440%2C960
http://hudsongravity.com/2016/06/05/hk416-build-starting-point-initial-work/

Sounds like were gonna have a VFC 416C build off :P

After getting reorganized and collected post-NF5, I was able to finally sit down and do a thorough review of the newly-released TMC minimap pack.


http://i2.wp.com/hudsongravity.com/w...6/IMG_3655.jpg
http://hudsongravity.com/2016/06/17/tmc-vs-gmr-minimap/

Hopefully I'll be able to resume work on the HK416 this weekend.

Had a few spare minutes this evening...

CHECK OUT THAT MIRAGE EFFECT THO. Wild.

http://i2.wp.com/hudsongravity.com/w...6/IMG_3660.jpg
http://hudsongravity.com/2016/06/17/hk416-build-mechbox-first-test/

I think I have some of those...

A look at the Midwest M-Lok rail for the HK416/MR556.
Or it should be titled "get rid of that nasty Dytac or Strike Industries rail and check this out"


http://i1.wp.com/hudsongravity.com/w...6/IMG_3666.jpg
http://hudsongravity.com/2016/06/22/midwest-industries-m-lok-rail-for-mr556hk416/

Turns out it may have to do with the design of the ASG motor housing being different from other motors. The body is slightly larger, and the guide tower for the shaft is part of the body instead of a separate piece slipped on before the pinion. Maybe the dimensions cause the motor to seat differently in the grip or motor guide hole, I don't know.

I managed to get my ASG to sound pretty much identical to my Tienly setup through somewhat counter-intuitive means. When I shimmed both setups visually, Tienly was much quieter. I tried shimming the bevel gear 0.3mm lower than what visually seemed optimal, the noise signature went down to the same level. Drivetrain setups were identical: Siegetek 10:1 sets in VFC mechboxes, PTS MOE grips, Siegetek pinions.

Quick review of the new Surefire Scout DS dual switch.


http://i2.wp.com/hudsongravity.com/w...6/IMG_3693.jpg
http://hudsongravity.com/2016/06/23/surefire-scout-ds-dual-switch/

Some additional (final) work on the HK416, experimenting with various gear setups and some video/metrics.

http://i0.wp.com/hudsongravity.com/w...ize=1024%2C714
http://hudsongravity.com/2016/07/13/hk416-build-experimenting-with-alternative-setups/

That's a stunning SBR, love the flat trigger!


Sent from my iPhone using Tapatalk

I've been doing literally zero airsoft-related things lately, but here is a quick review of the Arisaka M-lok inline flashlight mount;
A lightweight, economical Surefire scout light mounting option!


http://i2.wp.com/hudsongravity.com/w...ize=1369%2C960
http://hudsongravity.com/2016/08/07/arisaka-m-lok-inline-scout-light-mount/

Look for more content soon as I'm going through a mid-year gear acquisition...

A quick comparison between the M300V's old (120 lumen white) and new (250 lumen white) heads


http://i0.wp.com/hudsongravity.com/w...ize=1440%2C960
http://hudsongravity.com/2016/08/07/comparison-between-m300v-a-and-m300v-b/

What flash hider is that on there?

It's an MB556K brake, bit of an older brake now...

An in-depth look at the Insight MTM thermal monocular and usage.

http://i2.wp.com/hudsongravity.com/w...ize=1024%2C683

Also, I am now a BTC dealer.

Fuck. Finally some new content.
Messing around with some NV mounts.

http://i2.wp.com/hudsongravity.com/w...751.jpg?w=1333
http://hudsongravity.com/2016/12/11/new-and-old-wilcox-l4-g30-and-l2-g05/

Why the Wilcox dovetail J-arm is bad, and why Wilcox should feel bad.

http://i1.wp.com/hudsongravity.com/w...ize=1440%2C878
http://hudsongravity.com/2016/12/18/why-the-wilcox-j-arm-is-bad-and-why-wilcox-should-feel-bad/

A discussion about Sentinels and auto vs. manual gain

http://i.imgur.com/pQsgiX7.jpg
http://hudsongravity.com/2017/01/10/lets-talk-about-sentinels/

Great write up as always, Steve