Author Topic: Alien PTV picture as requested (Read 12042 times)

windstuffnow · « **on:** July 02, 2008, 02:20:34 PM »

Here is a peek at the Alien PTV 3 wheel project.... Scratch built with the exception of the S10 spindles and brakes ( wheels of course ). This is 6 weeks into the project starting with an idea and a pile of steel....

Alien... because it looks kind of weird and I'm a bit of a SCIFI nut ... PTV because it is a "Personal Transportation Vehicle"

The front suspension incorporates some Harley coil overs with 300 lb springs mounted inboard for space, the rear has a single sided swing arm with an over wheel spring system because of the limited space. The motor is a D&D 10 Hp continuous, 40hp peak. Batteries are the Optima D31 deep cycle AGM chosen to keep the weight down. Altrax controller, reverse contactors and chain drive using a 5 to 1 ratio.

I have some finish welding to do, brackets, steering and misc then its comming appart to be painted piece by piece. I plan a body for it but it won't be until winter when I start fabricating for this. I'm planning a "1 off" foam and fiberglass sectioned panel body for it. I'm considering removing the overhead bars and building a tilt up windscreen section that will fully enclose the unit for extended season use.

I'll be adding a page to my site for the project in the near future...

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windstuffnow · « **Reply #1 on:** July 02, 2008, 08:34:21 AM »

Here is a side view, gives you a better idea of how odd it is....

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wooferhound · « **Reply #2 on:** July 02, 2008, 12:18:44 PM »

Looks like

Rear wheel drive

and Front Wheel Steering ?

coldspot · « **Reply #3 on:** July 02, 2008, 01:34:02 PM »

ED-

you, Do the greatest projects !!!!!

WOW !!!

I'm dreaming about something along those lines.

But, still only at the bikes and parts point.

Having to move again, myself, maybe not the shed/shop stuff, getting anything done is just getting harder and even farther from what is real in my life.

Anyway,

Another WINNER!!!

$0.02

CmeBREW · « **Reply #4 on:** July 02, 2008, 02:08:31 PM »

Awesome ED!

That is progressing nicely. I suppose steering is in the back. I bet you can even make that street legal especially now at this time.

You will be the talk of the town driving that around. It sorta reminds me of a modern day "Monsters sportster hot rod". (I can hear the music)

What freaks me out though, is how the rear is suspended in mid air like that!!

Did you also figure out about anti-gravity phenomenona? If you did, you may not even need the wheels!

Looking forward to your progression of that impressive project.

windstuffnow · « **Reply #5 on:** July 02, 2008, 02:17:10 PM »

If I had used a motorcycle as the rear suspension and drive this could have been driveable a couple weeks ago. I've been tossing the idea around about building another one using something in the 400-500cc range.

I have all the jigs made up for this one so the next one would actually go a little quicker.

This is a little bigger than a Smart car, it has a 90 inch wheel base, from nose to tail is 11 ft long and the wide front wheel stance is 80 inches wheel to wheel ( outside tires ).

It's been a fun project....

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DamonHD · « **Reply #6 on:** July 02, 2008, 02:44:30 PM »

Yep, forget the rest of it, just give us the secret of the anti-grav!

You'll have squeezed a VAWT in there somewhere, I know it! B^>

Rgds

Damon

TomW · « **Reply #7 on:** July 02, 2008, 04:14:29 PM »

CME;

You obviously are not familiar with modern monoshock swing arm motorcycle rear suspensions.

Pretty common these days to have a one sided support for the swing arm.

It does look sweet.

Tom

wooferhound · « **Reply #8 on:** July 02, 2008, 04:23:57 PM »

did you leave room for some solar panels

wiredwrong · « **Reply #9 on:** July 02, 2008, 04:55:46 PM »

Very Cool, I cant wait to see the page you put up about it, what range and top speed are you aiming for? Looks like you have it well planed. I like the tilt up windscreen thought.

tecker · « **Reply #10 on:** July 02, 2008, 05:34:51 PM »

I don't see the wind tubine I'm surprised . I see an optima there good choice.

ghurd · « **Reply #11 on:** July 02, 2008, 06:48:16 PM »

I don't see how a critical reaction in the warp core will be allow ejection, should the need arise.

Maybe that's just me.

G-

windstuffnow · « **Reply #12 on:** July 02, 2008, 07:57:43 PM »

With that motor and the 300 amp restriction on the controller I don't expect it will do much over 70 mph. At 70 mph and those batteries it will have a range of about 20 miles. At 50 mph it should go 50 miles and up to 70 miles at 40 mph. So it will depend on where and how you drive it.

Most of my commutes are between 5 and 15 miles round trip and an ocassional 30 mile jaunt to the local tool outlet ( similar to Harbor freight ). It should do everything I need from groceries to parts I need.

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wiredwrong · « **Reply #13 on:** July 02, 2008, 08:17:35 PM »

That is very cool, the only other question I had and forgot to ask is what voltage are you going to run it at?

wdyasq · « **Reply #14 on:** July 02, 2008, 08:20:45 PM »

" I'm planning a "1 off" foam and fiberglass sectioned panel body for it."

Ed,

There sure is a lot of area one could do 'conical projection' on and get a very smooth and quick surface on. The 'fill-in' areas could be foam/glass or shaped metal.

The two choices I would have would be thin ply and then veneer for the '3D' sections or aluminum with shaped sections but my skills are in boats, airplanes and old cars. I think wood or foam/glass will be a lot more quiet than metal.

For the floor-pan and bulkheads look at 'Alumalite' panels. They are an aluminum skinned cor-plast core product with amazing stiffness and little weight.

Ron

windstuffnow · « **Reply #15 on:** July 02, 2008, 08:22:37 PM »

Ghurd... the buttons under the seat... easy reach as long as I don't get the other button confused for the proton torpedo's... could be a mess.

Tecker... The turbine is partially built, still needs the alternator to be completed... actually behind the Trike out of the picture... It's a large Lenz2 of course ( I'm sure you didn't expect anything less... ) ;O)

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windstuffnow · « **Reply #16 on:** July 02, 2008, 08:28:29 PM »

6 12 volt optima's for a 72 volt system. They'll be sitting on the "passengers side" inside a box.

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TheCasualTraveler · « **Reply #17 on:** July 02, 2008, 08:30:56 PM »

Very nice. I like the simplicity. Is this the start of RoadStuffNow?

ghurd · « **Reply #18 on:** July 02, 2008, 09:20:32 PM »

Just thinking out loud...

Batteries in line where the motor is shown.

Motor above them, below the mono-shock.

Two seats.

Car Pool lane?

Why not a 'Real VW' front axle assembly?

G-

windstuffnow · « **Reply #19 on:** July 02, 2008, 09:31:23 PM »

I spent 25 years building prototypes, customs, street rods and restorations... not likely I'll go back to that as a profession again....

I've been away from the automotive field for 20 years now and playing with this is fun again, building another one might be just as fun... 20 of them? Not fun anymore... I'm not as spry as I once was back when... I still like the design work and building all sorts of things... that's what keeps me going.

This project follows the RE stuff which also makes it fun and challenging.

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windstuffnow · « **Reply #20 on:** July 02, 2008, 09:49:50 PM »

It could be arranged as a 2 seater, the batteries couldn't be placed in the back though. A trike requires a 60/40 CG to make it stable. If the weight was on the rear wheel it would have tendencies to get tippy in a corner braking situation ( similar to a standard trike ). Hard cornering would actually lift one front wheel. The VW beam is to narrow, the standard wheel stance is around 60 inches for most cars, VW's were about 58 or there about. The wheel stance on this one is 80 inches and most of the weight will be close to the front maintaining the 60/40 CG.

Trikes are the future of the personal commuting vehicals. There is alot of work being done in this area. BMW, Volkswagon, Honda are all working on them as well as offspring companies such as the "T-Rex" in Canada.

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tecker · « **Reply #21 on:** July 03, 2008, 01:47:01 AM »

I 'd like to see the charger too but I was thinking pick up the back pressure form the passenger build out and duct it across some moderate speed drum turbine .You have to punch the frame through the air any how .

Capt Slog · « **Reply #22 on:** July 03, 2008, 02:10:25 AM »

Excelent work Ed.

I think we're going to see more of these in times to come, I'm surprised that the major manufacturers are so slow off the mark.

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dlenox · « **Reply #23 on:** July 03, 2008, 05:12:46 AM »

Ed,

Good luck with your build!

I completed my Vortex - a scratch built 3 wheeled trike - last year and have it insured, licensed and on the road. Over the last year I have put about 3000 miles on it. There are only 3 others completed in the world! It was a 2.5 year labor of love.

Have had it in a couple of car shows, and this summer it was at Carlisle.

Not trying to hijack this thread, but if you are interested I have lots of details on the build here: http:://www.briery.com/vortex

Here are a couple of pictures of it:

Dan Lenox

electrondady1 · « **Reply #24 on:** July 03, 2008, 07:19:35 AM »

ed,

what sort of devise controls the speed.

windstuffnow · « **Reply #25 on:** July 03, 2008, 07:21:12 AM »

Very nice Dan! I ran across your site while searching for Reverse trikes and similar designs. Saved a couple pictures of it and a couple views of the rear suspension.

Did you have a set of plans to work from? I don't remember if there were plans offered for it...

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windstuffnow · « **Reply #26 on:** July 03, 2008, 07:39:46 AM »

It's a fancy 5k pot, called the PB-6. Connects to the controller and is mechanically coupled to the accelerator pedal. It also has a high pedal cut off switch for safety and coasting.

dlenox · « **Reply #27 on:** July 03, 2008, 08:52:15 AM »

Ed,

Yes the vehicle is called a Vortex and plans are available at http://www.vortexplans.com

I have no affiliation with the selling of the plans. A guy named Steven Pombo out in California designed it back mid 80's, however to date mine is only the 4th ever completed... Not sure why it is a good design, much better than the Trimagnum and others.

It was a lot of work, but in the end worth it.

Dan Lenox

dlenox · « **Reply #28 on:** July 03, 2008, 08:56:33 AM »

BTW:

The plansets are about 100 pages (Vortex, Trimagnum, Doran, etc), and you can only stuff so much information into a package that size. That is why I put up the details and thought process of building mine, so others can see a good example of what time/costs/tools/experience it takes to build something similar.

I recently got the XR3 planset and RQ Riley also included some CD's and DVD, haven't looked at content yet but sure that it helps out builders.

Dan

dlenox · « **Reply #29 on:** July 03, 2008, 09:01:27 AM »

Ed,

I'd be interested in seeing a picture of your swing arm for the rear driven wheel, any chance on posting a picture of it?

You did a nice job on the front upper/lower control arms, were those bought or did you weld them up yourself? I used Triumph Spitfire arms and rack/pinion steering, very light weight and easy to work with/get parts for.

Dan

windstuffnow · « **Reply #30 on:** July 03, 2008, 11:13:27 AM »

I looked at the trimagnum also have the plans for the Trimuter I purchased back in the early 80's... didn't really like the design and it uses the rear sub assembly from an old Datsun 510 so the plans are basically useless now although he still sells them.

I looked at the newest one, construction pictures. That is so over engineered it's pathetic. It looks like he started building without a plan and kept adding things to overcome design problems. It's easy to engineer a complicated design, it's difficult to design a simple design. I like to keep things simple which takes alot more design work but is well worth the effort in the end.

Here are a couple shots of the rear swing arm assembly...

Not the best pictures but it gives you a general idea... rear drum brakes from my old 88 S10. The control arm bushings have a different slot arrangement on each side, one side adjusts camber the other side adjusts toe.

I'm working on the steering using a scavanged 79 Chevette rack and pinion which needs to be extended to match the A arm geometery.

The A arms are scratch built, assembled in jigs then welded.

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Bruce S · « **Reply #31 on:** July 03, 2008, 01:47:19 PM »

Ed;

I'm certain it's camera angle, but the gearing for the tire chain, seems kind of close to the support weld. Will you also be using an idler pulley to keep chain flex to a minnimum?

Bruce S

Sure beats our little 550watter of our all the death!!

TheCasualTraveler · « **Reply #32 on:** July 03, 2008, 03:05:12 PM »

Couldn't agree more with what you say about simple designs.

One thing though, the size of the wheels and tires surprises me. For an electric car, wouldn't it be better to save weight by using narrower (motorcycle) tires?

News:

Author Topic: Alien PTV picture as requested (Read 12042 times)