Grassroots Mechanic Movement

It has been some time since my last video, that is because I have been working on the Trammel Engine v2 which is mostly aluminum and custom precision machined. The new v2 is lighter and smoother operating, and modular components will allow us to make changes and adjustments much easier than ever before.
Version 1 creates about 10 lbs. of thrust at its highest RPM, the v2 is expected to far surpass the v1 build.
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As we are now fully into the testing and refinement phase, part failures have become fairly normal.
Stable & reliable drive motors are a primary need for consistent testing, but the 1800-watt brushless motor has malfunctioned and lost power.
Operation is so smooth we can now use the simple brush-type gear motors to run the Trammel. In this video the gear ratio “overdrives” it at 2 times the speed of the motor, so using 2 motors allows the Trammel to run at full speed without overloading either motor.
More to come soon as we look forward to fully operational units in my shop and our associates’ shops. We can’t have just one prototype which would endanger the entire project if it were to “disappear”. The “Grassroots” nature of this keeps us independent, while collaboration empowers us!
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The Trammel (Trammel Engine) is now fully equipped with AMPs, or “Active Mass Points”/Weights which are not just along for the ride but are taking a much more active mechanical role somewhat like the weights in the “PIE” engines. In these 2 video clips, the batteries need recharging and there are some internal springs that are in desperate need of tightening. Previous tests showed much stronger sustained thrust with minimal vibration.

On January 15, 2023, the thrust test was successfully repeated in exactly the same manner with good results. With some certainty, I can state that the new “Active Mass Points” are most definitely making the biggest difference!
One week prior, the Trammel stopped suddenly with a failed/jammed component which suddenly stopped the heavy metal rotating assembly as it was running at approximately 400 RPMs (no tachometer installed). This stop “tweaked” some of the internals enough to make it run with a bit of vibration, yet now that it is reassembled it still displays upward thrust!
A couple more confirmation experiments are in order, then if it is confirmed it will be “full speed ahead” to develop this engine properly!
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The latest work on the Trammel Engine seems to be a “turning point” which is allowing it to generate a small amount (around 1 pound) of thrust. Repeatable thrust was demonstrated on January 7th, 2023. A Great way to start the new year!
A major component called “Mass Points” are the weights, or masses, which are manipulated within the rotating assembly and are used for “displacing mass” to generate thrust.
The four mass points in the Trammel Engine have now been modified to take on an “active” role in their own manipulation, we are calling them “Active Mass Points” or AMPs for short.

This is a single, merged, 2-part video of the latest 2 bench tests of the PIE 5.0 with both of its platen wheels fully functional.
It may sound strange but although the second platen wheel is functional, I am not 100% convinced that this is a truly practical design that can be used for functional propulsion. But it does help illustrate the principle that there are multiple variants of the PIE system that “can” produce thrust.
The fact that there are multiple variants also illustrates the fact that these types of design certainly “could” have been created previously, and that precipitates the questions, “what happened to those previous efforts?” and if there were previous functional devices “what caused them to be kept hidden?”. Then the worst question of all… “WHY were these kept quietly hidden?”.
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The PIE 5.0’s second platen wheel is coming together. The weights are almost identical even though they are different shapes, and they are bolted in to help avoid launching either one as a dangerous projectile. More to come in the coming weeks… Thanks for watching!

The next iteration of the PIE series of Closed Loop Inertial Propulsion system engines is the PIE 5.0. This is the first bench test video with just one “platen wheel” and satellite mechanism showing decidedly biased thrust. More tests to come very soon as the second platen wheel is put together, until then thanks for watching.

This presentation and update on the Trammel engine was given at the APEC conference on August 13, 2022. Major internal revisions are being made to the Trammel, and we do feel that we are close to full blown operation!
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Another experiment with the LOLA setup, this time with a compression spring and synchronous rotating “wheels”. This is very similar to Ross Small’s RBI machine, and is also similar to 1/4th of the Trammel engine’s inner workings. Just sparking some ideas!
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The Trammel Engine project continues! These clips are from private videos of actual tests. There have actually been hundreds of tests, and hundreds of broken parts to go with them. We have had some successful tests that definitively produce thrust, but we still have a ways to go before full public demonstrations will be available. Hopefully we will be demonstrating definitive thrust very soon (fingers crossed).
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This is an experiment I call “Linear Oscillation – Linear Acceleration” aka LOLA. This was only put together (from PIE components) to bench test some working theories and share some results with those people collaborating with me on the Trammel engine project. It was never expected to actually generate thrust since it is barely half of the necessary construct. This “could” be used (more or less) for thrust generation if there was either a speed differential control added, or another spring-loaded rod set at 180 degrees away from the one used.
This was 2 videos (poor audio…sorry) pasted together to show running after initial setup and then a rolling oscillation test which shows a definite “directional bias” but is not really able to self-propel due to an incomplete build.
I pretty much verified what I wanted to with this setup, so it will most likely not continue as a project of its own…
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In this second presentation by Ross Small for APEC, he demonstrates the “linear components” of his machine. This working theory of the use of linear components definitely relates to the Trammel engine and some of its internal components.
Next up, I will be posting a video which was meant to be a private share with associates working with me on Trammel engine technology. The “LOLA” or Linear Actuator & Linear Accelerator was never meant to be a propulsion device. The LOLA was only meant to assist our understanding of over-center linear energy movement.
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In this presentation by Ross Small for APEC, he talks about “linear components” and the movement of energy in a straight line. This relates directly to the Trammel motor although it is built very differently.
Very soon I will be posting a video which was really only meant for me to re-watch later on and share with associates working with me regarding the Trammel engine. This will be demonstrating an experiment I called “LOLA” for Linear Actuator & Linear Accelerator which was not meant to be a propulsion device but just a hands-on visual aid to assist in understanding the effect of resistance going “over-center” in a fully rotating environment.
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Part two of my presentation at the APEC Conference on February 26th, 2022.

Part one of my presentation at the APEC Conference on February 26th, 2022.

The new motor is installed, testing and adjustments has begun. His video shows the Trammel Engine “jumping” slightly, for anyone thinking it is “pushing off” the workbench surface, it doesn’t matter how it has come to rest it still jumps. Even if I rest it on my hand where a 200# mass would impart some pretty strong (finger crushing) weight pushing off from it but there is negligible extra push against my hand…
More to come soon, I hope!!! Thanks for watchingY

Here is a first trial run on wheels for the PIE Mini.
It is awfully heavy for the size of the single rotating weight to move, I used heavy axles and bearings for the wheels since that is what I had.
It would have more visible power if it were not "slowing down" its rotation speed at the wrong moment in rotation and had an extension on the weight for better timing.
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The first run of the PIE Mini under its own power. The next step is getting some wheels on it… Or maybe float it on water, air, or something more exotic now that there is a unit that weighs less than 10 pounds!
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This is the second part of the model demonstrator project’s first unit built. I was very surprised how much thrust power was generated with each pulse! I need a motor for it now, so it will run without being held onto. More to come as things progress.
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I decided that I need a demonstrator, portable enough to be easily carried into potential investor’s offices. This will also show scalability. This is the first part of that demonstrator project. There there will be more models built once this one is complete and working, and they could eventually be for sale if there is enough interest.
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I am preparing to install a much-needed upgrade motor on the Trammel Engine! I just got the motor electrically connected for the first time; this is that first bench test.
Although the frequency of my public videos has slowed, the work continues.
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The “PIE X” is now officially getting a name of its own. It is now the “Trammel Engine” which is a mechanical inertial propulsion system.
This series of 2 videos is taken with no rehearsal, no pre-video test runs, and no cuts. The first video shows little to no upward thrust, while the second video shows solid lift until the fuse popped! It repeats and is now undergoing minor internal renovations to prepare it for running at a projected 1000 RPM.
Thanks for watching!

The “PIE X” is now officially getting a name of its own. It is now the “Trammel Engine” which is a mechanical inertial propulsion system.
This series of 2 videos is taken with no rehearsal, no pre-video test runs, and no cuts. The first video shows little to no upward thrust, while the second video shows solid lift until the fuse popped! It repeats and is now undergoing minor internal renovations to prepare it for running at a projected 1000 RPM.
Thanks for watching!

I had the honor and privilege to publicly unveil the PIE X live during the amazing 1 year anniversary APEC conference & this is it. I did have to keep most of the internals hidden (for now), and although the bench setup was not ideal, it does have measurable upward thrust when running (even at these low RPMs). Measured thrust (frame by frame analysis of diagnostic videos made) is .77 lbs. even at these low speeds.
More to come soon, thanks for watching!


Created 3 years, 4 months ago.

102 videos

Category Science & Technology

Grassroots Mechanic Movement, a FREE and OPEN SOURCE project to promote collaboration & free information sharing for the Pulsed Inertial Propulsion Engine (PIE for short) which is a modern rework of nearly forgotten reactionless propulsion designs. PIE is based originally on the work of Roy Thornson and built upon with a freshened approach and a different set of objectives. Watch, join in, comment, ask questions & enjoy. ALL information is 100% free and available at:
The only rule: Absolutely NO flaming, defamation, rudeness, or other negativity regarding the study or use of this technology or those persons interested in it in any way.
Thanks for visiting & I really hope you build one too.

I now have a web site highlighting a builder's manual showing anyone wanting to learn about inertial propulsion how to build a functional PIE 1.0 and 2.0. Please visit at