Current Projects

(11/2004) I’ve started an ambitious new rocket project - a 1/12 scale Soyuz TM-12. Details of my progress will be kept here.  I’ve always had a thing for Soviet (OK, former Soviet) rockets -  they have such unusual designs

When I (Larry) was a kid, I was fascinated by Hovercraft, but even then I recognized that those simple lawn-mower or vacuum cleaner powered things seen in the back of comic books were just toys, so I never had, or even rode one.

Well, 3 years ago, I had some money, and decided to fullfill my old dream. As my wife was very lukewarm to the idea, I decided to build, not buy.

I did a lot of research on the web, and decided on either a Universal Hovercraft design, or one from Sevtec.  I bought plans from both companies (UH-12R & UH-10F from Universal Hovercraft, and the Scout and Vanguard from Sevtec), and after studying them, decided that the Sevtec Vanguard design was best for me. I bought all the major items I would need - skirt material, foam core, fiberglass & resin, motor, propellers, drive kit, etc.

Well, I had barely started, when changes at my current employer forced me to pack things up. And they stayed packed up for the last 3 years, until I decided to take advantage of a lack of consulting work to finish this thing.

 

Hovercraft Status:

7/30/2003: Its all done!!

Click on thumbnail for a bigger image, and explanation:

Hull Panel

Glassed Hull Panel

Basic Hull 1

Basic Hull 2

Basic Hull 3

Propeller mount

Thrust / Lift Stand

Aft Deck 1

Aft Deck 2

Aft Bottom 1

Aft Bottom 2

Aft Bottom 3

Full Hull 1

Flotation Compartments 1

Odd Joint 1

Odd Joint 2

Flotation Compartments 2

Helm 1

Battery compartment 1

Battery compartment 2

Finishing 1

Finishing 2

Finishing 3

Skirt Panels 1

Skirt Panels 2

Skirt Attachment

Final 1

Rudder Attachment

Done!

Miscalanious comments:

Iam a software engineer, not a Mechanical Engineer.  in fact, I have never been good with mechanical things at all, making this project a bit of a streatch for me.  As an engineer, I like to plan things out in advance, and work out problems before committing myself.

The designer of the Sevtec craft is a mechanical engineer, but one who prefers to fiddle with things until they work.  In preparing to buld this, I had a lot of questions generated by what I see as amiguities in the plans.  My preference in such cases is to ask what the correct or best solution is from someone who has done it before. Well, as you can guess, my aproach, and Sevtec’s are quite different, and this has caused some friction.

While I still believe that the Sevtec designs are the best, I feel strongly that their customer support is very weak, and their ability to deal with difficult customers almost non-existant.

Building tips:

Get the videos, and watch them closely.  Sometimes the detail you need is covered offhand, in the background, etc. I have watched both the ‘Its no trick’ and ‘Vanguard’ videos about 3-4 times, and will watch them again.

Build things in your head. Neither the plans or the instructions will tell you how to do most of the things you will need to do.  By building in your head, you will figure out what tools, hardware, etc. you will need for a given task.

When assembling the skirt, remember that you can use a heat gun or hair dryer to take a seam apart, and adjust it, even days later.

Registration.  I live in California, and I had to register it as both an off road vehicle and as a boat. To do this, I needed to get a ‘Deficient Title Bond’, and have the CHP inspect it. Be prepared for multiple trips to DMV, get a trailer well ahead of time too. Oh, and save those invoices - I had lost mine in the shuffle (see top of page), and it has caused lots of extra paperwork.

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