Thursday, July 2, 2009
My name is Paul Elkins. I live in the farmlands of northwestern Washington, USA with my lovely girlfriend Mary and our 2 dogs Sally and Lucy. In my spare time I play in my shop creating a host of toys and things that roll, mostly. They all start as and idea that gets transfered to paper. I've been doing this idea hatching thing since I was a kid. I recieving my first serious sketch pad on Christmas morning when I was 8 years old. Each day I'd think of something weird and sketch it out, and every year another book would appear under the tree. I have at least 26 of these sketch books now, filled with hours and hours of figuring and redrawing, making lists of pros and cons on an idea.Many hours were spent drawing cartoons and the human figure. These sketches led to paintings and other forms of art, but that's for another future blog. My real passion was and is design, with subject matter varying from bicycles, trikes, cars, boats helicopters, submarines, home design or whatever happens to cross my mind. Each idea has to be original, or an elaboration of something I''ve seen or read about.At 16 I built my first recumbent bicycle which was never photographed or completed. Several other recumbents were made as time went by. It wasn't until I was divorced and started to enter my 40's that most of what you'll see here really started to materialize. Some of these ideas have miraculously worked out great! and I've spent many hours enjoying them, while others have not. For the ones that did, I have pride in knowing that my mind and hands had a part in their creation and existense. For the ones that didn't, I chaulk them up as a lesson.I've inserted extra pictures and details on some of these for anyone who's crazy enought to want to build one of the items listed. If you're one of these individuals and have any further questions my E-mail address is below, or if you'de just like to leave a comment please do so. I'd love to hear from you.Thanks again for visiting my site and enjoy!paulwelkins@yahoo.com
Enclosed motorized delta tricycle
I had purchased a used lawn edger for $45. It came equipped with a healthy 2 hp, 4 stroke, under 49cc briggs motor. My original intent was to mount it on a bicycle. This idea somehow evolved into what you see here. The imagination can be a dangerous thing....
The whole frame is made of various wall thicknesses of square steel tubing. This way I was able to do all the fabricating myself. Some thin wall tubing, taken from a collapsed gazibo, was used on non-supporting parts of the frame. Bending the thicker wall tubing was achieved using plywood forms skrewed onto my work bench, then blocking the part down on one end and push the part around the form. It's a workout! Thin wall will collapse during bending, except for minor bows.
This view shows where I can rest my feet while under way, but doing this required fabricating a trustworthy stop-lever to keep the pedals from spinning with the wheel, thus preventing the scary wabbles.
Detail of the underside.Friday, January 9, 2009
Fuel efficient car
Here's what I did:
Coroplast belly pan, (lasted up till recent heavy snowfall) coroplast hubcaps, removed the side mirrors (tried a big interior mirror but was a head banger, took it out and reinstalled drivers side mirror), block the air inlet except for summer time, semi-synthetic oil, bigger air cleaner, 45 psi in tires and an HF (High Fuel efficiency) transmission swap. These gears a TAAAAALL! I also coast alot without being a nusence to the people behind me. I tried adding Acetone to my gas but didn't notice any difference. I still drive from 65 to 72 mph on the freeway.
Hybrid my Ass! The Datsun B210 boasted 50 mpg new, and the Honda CRX HF boasted about the same, and this was more than 20 years ago! And when they're trashed only One battery will be recycled.
82 ft.Tree perch
There were definitely design issues with this one, being that I want to put a small 3 foot square enclosure on the platform some day.
Survival tent in hiking staff
Mail box wood stove
I saw two others on the web but none had a top cooking surface. Smoke escapes better when it's tilted up in the rear.
Monday, January 28, 2008
High Mileage Trike
This is probably the only photoshop rendering in this blog. It's of a future trike that I plan to put together one of these days when I'm not so busy. A fellow named Jory Squibb inspired me for this idea. He created the 'Moon Beam'. A small utilitarian vehicle using the same scooter that this will be made from. I'm hoping this will go 55 mph and be stable at speeds.
It's a simpler and lighter version of the yellow reverse trike posted below.
The rear end will be from a Honda Elite 150 scooter. These are water cooled and have an automatic transmission.
I'm trying to create a spring suspention for the front wheels similar to the Morgan 3 wheeler. This will enable for a simple 'T' frame design. The body may be of colored 4mm coroplast or 1/4" mohogany plywood..
Reverse Trike
This is the rear storage trunk lid. It may look strange but works such that if I get into a frontal accident, all the stuff behind my head will not come rushing forward. Ipod speakers will go on both sides.
There is still lots to do, but I must say, I'm enjoying the challenge of figuring out all the details.
Most of the frame is 1" square tubing for ease of welding and body panel attachment. These were also bent using plywood brakes. ( hanging on the wall in picture)
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The Wheel
First you take a few steps forward
If you still feel in balance continue by pushing off with your feet. If you manage to do 15 consecutive rolls before tipping over then CONGRATULATIONS! You have beaten my record!
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Recumbent Electric Scooter
Recumbent Scooter
Recumbent Moped
My recumbent moped, all gassed up and snowing outside...
The original idea for this project was intended for a Honda cub, but a friend offered me a great deal on a 49cc Tomos moped. (above pic taken from internet) The seat was made of 1/8" aluminum plate bent to fit. The original foam was sliced and cut to fit. The foam was then attached with double back tape. A seat cover that was made wraps around the back and is laced down.
The first foot pegs were attached to the steering fork. This proved to be a bit nerve racking as my legs would stiffen and fight my arms for steering control.
Some of the original seat mount was cut away to make room for the new seating position.
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Rear Steering Recumbent
Recumbent Bicycle
Recumbent bicycle/boat
It started as a one speed but was later upgraded to a three speed, including a front hub brake. I wanted to enter a kinetic race in Bolder Colorado so pontoons were attached. The picture above was launch day, and notice the smile. I was not smiling a minute later when the tape holding the pontoons broke loose and sent the bike and almost me to the bottom of this freezing cold lake. It was recovered and design improvements were made, but unfortunately the bike never made it to the race.
The bike is basically a bmx rear frame. 1" tubing make up for the top and bottom bar. The front end is off of a 20" wheel bike. This same bike had the crank cut off leaving a little of the seat and lower tube to make a secure attachment to the steering tube. The bottom of the front chain ring resides very close to the top of the narrow steering fork. The narrow fork allows the pedals to miss them when pedaling. I liked the simplicity of this mid wheelbase triangulated design. the crank was positioned as low as possible for reasons of better handling and comfort.
Mid-Steering Recumbent
I saw one mid steering bike and thought I'd figured out the steering geometry but got it wrong. Looking back I kinda wished I hadn't given up so soon because minor tweaking would have solved the control issue. As it was the bike was disassembled and the little kids bike reassembled for a money refund
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25 pound recumbent bicycle
You gain frontal area by doing this but you get so much more control the lower your feet are.
The latest recumbent design that some manufacturers have adopted where the seat tube is raked back and the horizontal rear fork extended is very similar to what I had in mind 10 years ago. The bike was cut and ready to weld together, but then my last marriage fell apart. Needless to say it was never completed, but It's good to know that it was a good idea.
Friday, January 25, 2008
Bicycle Fairing
I wanted a fast bicycle, something that could sustain cross winds and keep me dry in the rain. This was the goal. I'd never worked with fiberglass and had no prior experience making a plug but I was determined to try.Thick steel wire was strung through holes drilled on the outer edges of the 1/2" plywood frame. The frame was actually attached to the 10 speed bicycle. Chicken wire was put over this, then paper mache'ed with newspaper.
A bubble repair job shows where I added thicker and stiffer square wire mesh for the tail section.
Dirt Skates
Tuesday, January 22, 2008
Wooden Kayak
Electric Boat

The front bulkhead was filled with foam before the top was nailed on.
This is my favorite boat. Because of the steep dory style arc it handles waves great and the low center of gravity makes it very stable, but because of the arc shape the boat plows through the water and will only go 5 knots no matter how much power you have.
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Sail/Electric Boat
The boat was joined using gorilla glue and brass ring-shank nails spaced about 3-4" apart. For ease of transport a 1/2" aluminum axle was installed. Removabel plastic lawnmower wheels slide on the portruding ends. Once on the water I pull the cable secured pins, remove the wheels and store them inside.
I love this boat. Many hours have been spent paddling, sailing or trolling along on the local lakes. Getting out on the water is a great perspective and very liberating, hence the name, Liberty.
The slotted mast hole is located just behind the foot bulkhead. The last foot of the mast has one side shaved flat. this side rests against the foot bulkhead. A metal loop is attached to the lower part of the bulkhead to accept the mast end.
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Camper Bird House
Racing Push Scooter
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Hands Free Phone
FWD Trike
Thursday, January 17, 2008
Pick-up Shell Camper
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Home-in-a-Box
The flutted plastic sheeting was nailed to 2x2's in each corner. The large door swung up to serve as a sun shade, and sealed tight to keep the dust storms at bay. When this happened I'd watch things blow by through the bubble window.
Inside was the cooler, lights and shelves for the radio, fan, books and misc. amenities. I slept in the back of my truck. Yes, that's a real recliner in there. My nick name was Jack. I was Jack in the box.
This design led to the development of my bicycle camper that I built the following year.
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Monday, January 14, 2008
Tree House
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Tuesday, January 8, 2008
My First Trike
Motorized Bicycle
I'd call it a rat bike now as the butchering was quick and dirty, and I'm too lazy to put anymore time into it. The two HP engine delivers ample speed (30 mph) to the rear 6 speed cluster. Mileage? It's a tired motor, maybe 100 mpg.
You may think I was too cheap to buy a centrifical clutch but I like the belt tensioner lever. It may not be located in a safe place but it adds to the look and the gadgetry it takes to get this thing rolling.
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Monday, January 7, 2008
Bicycle Camper
I chose to live the nomad life for the week. The camper was not designed for road use, that's another version in a drawing below. This unit had to endure winds of 60 mph, heat of 100+ degrees. The idea hatched from that particular years theme, (they have a yearly theme). It was fear of the future. My thoughts at the time were fixated on the bird flu. what if.. This was an attempt to show how one might survive a post apocalyptic life.
The camper is about 100 pounds dry weight. The skin is 1/4" flutted plastic like whats used for election signs. This was riveted and screwed onto 3/4" square aluminum tubing salvaged from an old satellite dish. The base was made of 2x2 fir. The 30" square door frame, made of 1x2's was skrewed to the side panel, cut on the sides and bottom. The upper part was left uncut to act as a hinge. The bed hinges in a lounge attitude. On the outside resides an herb flower box, a urinal funnel (sanicans were a ways off) and 13" wheel barrel wheels on a 1/2" axle mounted with 1/2" square tubing made up the running gear. I used 3/4" steel for the tow bar, A recycled card table for the corner camper supports, and misc this and that. It's whatever I had kicking around at the time, and that's how anyone would have to do it if worst came to worst.
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A final word.
I hope you've enjoyed some of my wacky creations.
Again, if you have any comments, questions or would like to discuss a subject you have in mind be it mini submarines, backpack helicopters, hay bail dome homes, tricycle campers or econonomizing your car, whatever, please feel free to drop me an E-mail
I love to talk about new ideas.
Cheers, Paul



