Donald-Neisler.COM

I got this on one my newsgroups I subscribe to and I thought I would share it with everyone, simply amazing.

I apologize for the off topic posting, but I think most of us are interested in various phases of aviation. I was just sent this video of an F-16 dead stick landing. Thought some of you might enjoy ‘riding’ along … though it went very well, I found it ‘hair raising.’

This took place in Elizabeth City Coast Guard Air Station after a practice-bombing run in Dare County, NC. Very good job by the guy and by his number 3. Heavy breathing noise is due to being on 100% oxygen, which is standard procedure with the EPU running on hydrazine.

Thanks to Carl Carlsen

Click Here to View F-16 Dead Stick Landing

One evening I was bored and had some free time. I always have had thoughts of writing something that generated G-Code. So I came up with this simple little application. It works good, I have used it a couple of times already since I made it. It only does squares at this time, but I will be adding facing and pocketing when I get bored again…

Here is a nice quick little upgrade that will let you select several RPM ranges (0-1000, 0-2000, 0-3000, and 0-6000) in less than 30 seconds. These numbers are educated guesses as I have not gotten my Tachometer working yet. When I get more firm numbers I will post them. To do this upgrade you need to order 3 parts from SDP-SI.

• 1 - Timing Belt Pulley, GT2 (5mm) Pitch, 32 Grooves, 12mm Bore, 2 Flanges / With hub for 15mm Wide Belt. Material - Aluminum alloy, Finish- Clear anodize. (Part#: A 6A55M032DF1512)
• 1 - Timing Belt Pulley, GT2 (5mm) Pitch, 19 Grooves, 6mm Bore, 2 Flanges / With hub for 15mm Wide Belt. Material - Aluminum alloy, Finish- Clear anodize. (Part#: A 6A55M019DF1506)
• 1 - GT2 (5mm) Pitch, 82 Teeth, 15 mm (.591) Wide Neoprene Belt (Part#: A 6R55M082150)

Once you have those parts you will have to machine the 19 tooth so that it has a 12mm bore. It comes with I believe a 6mm bore. Then have someone broach a 4mm keyway in each. Once this is done, you can actually use the gears if you need to though I recommend a few more steps myself.

<Insert pics here….>

In this configuration you will get about 0-1000 RPM in L, and 0-2000 RPM in H. If you swap the 19 and 32 pulleys then you get 0-3000 RPM in L, and 0-6000 RPM in high. Again, these are educated guesses for RPM. I have machined some 6061 aluminum with a 1/8” 2 Flute end mill @ 10IPM and .0625 DOC and the swraf was being welded back to the stock, so I need to up the feed to run at 6000 RPM. I tried a ¼” 2 Flute end mill at 6000 RPM and 24 IPM and it made some very nice cuts with ease. I think I could have gone faster easily; I just have not had a chance to do much testing yet. I ran my mill for 30 minutes at the 6000 RPM setting and I took the temperature of the motor and the spindle head case. The motor temp was around 120 degrees F. The spindle head case was around 108 degrees F. To me those temps seem fine. I could be wrong and welcome any feedback.

But wait, it is not complete. To really make this better, you will need to machine a spacer to go under the pulley on the spindle side. This is where I am at and to date had not done it.

Well it has been a long time since my last post. As you will see this if my first post on my website. You may ask why that is. Thanks to my web hosting company for totally deleting my site and losing all my data. Thankfully they did not delete my business site or would have had a heart attack. So I am starting my site from scratch again. Its main focus will be my CNC hobby and the place for other hobby machinist can come and discuss their trials and tribulations.

So what have I been up to? Well I have upgraded my X3 CNC machine to be capable of approximately 6000 rpm and I have a prototype tachometer and case I have been working. I also have opened a new chapter in my life, which I will not discuss at this time, maybe later, but very doubtful.

In my next few posts I will put up some pictures and details about the tachometer and the belt conversion I have done and plan on doing. I also have been doing several CNC jobs for a couple customers. It is amazing what you learn from other people’s parts you make. In the meantime take a visit to one of my favorite sites for purchasing materials.

Help a fellow hobbyist out and use my link for your next materials order.