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snakerbot

Member Since 22 Apr 2009
Offline Last Active May 31 2020 12:28 PM

Topics I've Started

Houston Area Nerfers Unite (HANU) Monthly War #35

20 December 2019 - 08:39 PM

We have these every month, I just forget to post them most of the time. Unless otherwise noted, they are the first Saturday of the month, at 10:00 AM, at this location.

 

Date: Saturday, January 4, 2020

Time: 10:00 AM until 2:00 or so.

Location: Hilton C. Schott Park, 8510 Will Clayton Drive Humble, TX 77396

Take the entrance farthest west, closest to 59, by the big red and yellow playground setup (A) and go all the way to the back. We'll be set up around the gazebo/picnic table (B).

 

Schott park labelled.png

 

Rules:

150fps limit.

Stock or stock-ish ammo only. Workers, Artifacts, and other short darts allowed as long as they have soft, stock-ish tips. No FVJs or voberries. There will be a community ammo bin which is mostly full of accufakes, waffles, and elites.

No blasters with realistic looking paint jobs.

All ages welcome, but if you aren't old enough to drive yourself, someone who is needs to stay with you.

Eye protection of some sort is mandatory.

 

Gametypes:

A mix of deathmatch and objective based games. A typical day might look something like this:

- 3-15 teams

- Territories

- CTF

- Carpe

- VIP

- 3-15 pistols

 

We're on Meetup and Facebook as well.

https://www.meetup.c...ents/267320334/

https://www.facebook...49451813/?ti=as


Houston Area Nerfers Unite (HANU) Monthly War #34

05 December 2019 - 10:45 PM

We have these every month, I just forget to post them most of the time.

 

Date: Saturday, December 7, 2019

Time: 10:00 AM until 2:00 or so.

Location: Hilton C. Schott Park, 8510 Will Clayton Drive Humble, TX 77396

Take the entrance farthest west, closest to 59, by the big red and yellow playground setup (A) and go all the way to the back. We'll be set up around the gazebo/picnic table (B).

 

Attached File  Schott park labelled.png   1.78MB   16 downloads

 

Rules:

150fps limit.

Stock or stock-ish ammo only. Workers, Artifacts, and other short darts allowed as long as they have soft, stock-ish tips. No FVJs. There will be a community ammo bin which is mostly full of accufakes, waffles, and elites.

No blasters with realistic looking paint jobs.

All ages welcome, but if you aren't old enough to drive yourself, someone who is needs to stay with you.

Eye protection of some sort is mandatory.

 

Gametypes:

A mix of deathmatch and objective based games. A typical day might look something like this:

- 3-15 teams

- Territories

- CTF

- Carpe

- VIP

- 3-15 pistols

 

We're on Meetup and Facebook as well.

https://www.meetup.c...ents/266352850/

https://www.facebook...49451813/?ti=as


Project 10

05 July 2019 - 06:29 PM

Attached File  IMG_3823.JPG   222.28KB   32 downloads

 

Back in December 2012, I made what was then my second homemade, an extension spring powered, bullpup rainbow (later named by Vaan as an ESRB, so that’s what I’ll call it).

 

And while it took a few revisions before it was truly reliable, that blaster has remained in service at the high-velocity games I’ve played at more or less continuously since then. Though it served me very well, a few niggles started to bug me:

 

- The barrel wasn’t quite on straight.

- The wooden handle had spent the last six-and-a-bit years absorbing water from the humid Houston air and was splitting.

- The screws holding the handle on no longer were staying tight.

- The trigger flopped around.

- General jankyness resulting from my lack of skill in 2012.

 

So earlier this year I set out to make essentially a 1:1 replacement for that blaster, intended to address the above issues. I had also hoped that I could improve the efficiency of the blaster by 3D printing a redirect piece with a smoother airflow path, using a lighter plunger rod, etc., but this new one is chrono’ing at basically the same FPS as the ESRB (around 230 with sweet oranges), so I don’t know if any of that stuff worked.

 

As with the ESRB, I don’t intend this to be a fully fledged writeup. Those of you with the experience and tools necessary to make this can probably figure out just from the STEP file what to do.

 

A couple notes though.

 

- This uses the same 1/4” galvanized aluminum plunger rod as Ryan and Kane used on the later version ESLTs, but with a 3D printed piece added on to enable rainbow catch usage.

Attached File  IMG_3827.JPG   99.91KB   32 downloads

- This also uses the same o-ring plunger padding method as the ESLTs.

Attached File  IMG_3835.JPG   84.12KB   33 downloads

- As with the ESRB, this uses a U-Cup to seal the plunger rod in the redirect, but it’s a different part number since the rod is a different diameter. This U-Cup seems to be adding a bit of friction, so I have an o-ring I’ll try eventually.

- The hopper wye has had the top corner shaved down to give the darts a little more room to maneuver the corner, and this uses a brithop. In my experience this is the most reliable method of shooting sweet orange darts.

Attached File  IMG_3841.JPG   70.34KB   34 downloads

- I’m using one of LegoDEI’s rifling attachments on the front. The STEP file just features a dummy piece there.

Attached File  IMG_3830.JPG   150.22KB   33 downloads

- The purple printed wye support is different on the STEP file and the pictures. I added this after I made the rest of the blaster, so a couple screws were in the wrong place. The STEP file represents what I would do if I built this again.

Attached File  IMG_3829.JPG   135.83KB   34 downloads

- The STEP file does not show most of the fasteners. The shoulder screw goes on the catch. The 3/8” screws hold the barrel support on, and hold the wye to the redirect. The 3/4” screws go through the rear barrel spacer and the handle clamp. The 3/8” Flat head screw goes in the front of the handle clamp and into the grip. The 1” flat head screws hold the back of the grip to the handle clamp. The 1 1/4” screw is what the trigger pivots on, and is cut down to length.

- The physical blaster has two holes one inch aprt for the front sprint post, for different amounts of pretension. The STEP file only has the one I’m currently using. The set screw I’m using for the spring post has been cut down so it doesn’t poke out of the body.

Attached File  IMG_3833.JPG   94.52KB   33 downloads

- The purple parts are printed in Color Me 3D Purple Haze PETG. The white parts are eSun/Inland solid white PETG.

 

I used this blaster in the Foam Pro Tour at this year's Endwar, where it was the only hopper-fed blaster there, and one of only two (that I saw) old-school PVC contraptions. The other was an AABow with an RSCB. Unfortunately my team went 0-2, but the blaster performed well enough, and I blame our poor showing more on our almost zero practice than anything else.

 

Anyway, files are here.

https://drive.google...7VF?usp=sharing


Project 8

06 January 2019 - 09:48 PM

Attached File  IMG_3782.JPG   105.99KB   45 downloads

This is what I’ve come to call “Project 8” or just P8. It is a fully 3D-printed, magazine fed, fully-automatic blaster heavily inspired by/based on Torukmakto4’s T19. It uses the same Hy-con geometry wheels, but with the 11mm gap instead of the base 9.5mm. The important parts of the flywheel cage geometry such as spacing and bore diameter are the same, although both parts of the flywheel cage have been modified somewhat.

 

It also uses the same stepper motor bolt drive, although again, some slight geometry changes have been made to fit them into this blaster.

Flywheel motor controllers run the same build of SimonK that the T19 does, but with the motor speed governed at 21,291rpm instead of 25,510. The slower speed at the larger gap flywheels are meant for 150fps games, and although there wasn’t a chronograph at the last game, a test cage with the same geometry was getting ~145fps with community bin accufakes and ~150fps with community waffles. The new wheels were printed with different settings that better matched the intended profile, so I dropped the speed by about 5% (to the current speed) just in case it was shooting too hot.

 

The core arduino code is near-stock T19 “Core 26.1”. The only change I made was to reduce the base feed delay from 185ms in non-turbo mode and 180ms in turbo mode to 145ms and 140ms, respectively since the flywheels don’t need to reach quite the same speeds.

 

Essentially this is a T19 in a differently shaped body. I did not really intend this to be so, but once I started doing the CAD, the design took on a life of its own and this is where it ended up. In general it features smoother contours than the T19, especially on the user contact areas, where the grip, the stock pad, and the front of the magwell are all very heavily radiused. It also has large windows on the left and right sides of the magwell so I can see how much ammo I have left in the magazine. The breech is also not a fully enclosed breech like the T19, although the jam door, when closed, serves the same purpose a closed breech does, aligning the dart with the bore. This jam door was really intended to be a top loading door more than a jam door, but I’m not sure I’ll ever actually use it for that. I used to top load my rapidstrike, but it lost that ability about seven months ago and I can’t say I’ve missed it.

 

Issues as they exist right now:

- It’s pretty large and heavy. Not unreasonably so, but a hypothetical Project 9 may make an effort to be lighter.

- The weight balance is a little off. The center of gravity is about an inch behind the handle with the battery in place. Not a huge deal, but noticeable in some circumstances.

- The magwell required huge amounts of sanding, filing, and scraping to make the mags drop free. I’ll edit the CAD eventually, but I haven’t yet.

- One of the screws in the handle digs into my knuckle if I hold it in certain ways.

 

And so you can see it in action, here’s a video of the CTF rounds we played at the last HANU game where I used this blaster.

https://www.youtube....h?v=wdj4fMtDgTg

 

More info on the T19 can be found at Torukmakto4’s blog:

http://torukmakto4.blogspot.com

 

The cad files and code for P8 are available here:

https://drive.google...ccV-W0eCXEGhUSc


Houston Area Nerfers Unite (HANU) War #24

27 December 2018 - 01:54 PM

Date: Saturday, January 5, 2019

Time: 10:00 AM until 2:00 or so.

Location: Hilton C. Schott Park, 8510 Will Clayton Drive Humble, TX 77396

Take the entrance farthest west, closest to 59, by the big red and yellow playground setup (A) and go all the way to the back. We'll be set up around the gazebo/picnic table (B).

 

Attached File  Schott park labelled.png   1.78MB   50 downloads

 

Rules:

150fps limit.

Stock or stock-ish ammo only. Workers, Artifacts, and other short darts allowed as long as they have soft, stock-ish tips. No FVJs. There will be a community ammo bin which is mostly full of accufakes, waffles, and elites.

No blasters with realistic looking paint jobs.

All ages welcome, but if you aren't old enough to drive yourself, someone who is needs to stay with you.

Eye protection of some sort is mandatory.

 

Gametypes:

A mix of deathmatch and objective based games. A typical day might look something like this:

- 3-15 teams

- Territories

- CTF

- Carpe

- VIP

- 3-15 pistols

 

We're on Meetup and Facebook as well.

https://www.meetup.c...xMTA5NjgyNDBlYw

https://www.facebook...12567972183035/