Author Topic: Front wheel drive electric--rear wheel steering  (Read 1387 times)

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Offline gerhed

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Front wheel drive electric--rear wheel steering
« on: January 27, 2013, 06:40:02 AM »
Don't try it!  Doesn't work like you would have hoped.
Rides: 75 CB750F, 48 Indian Chief, 67 Triumph TR6, 63Honda CA95
          83 XL600R in CB360 Frame
          3-wheel electric tilting cycle

Offline simon#42

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Re: Front wheel drive electric--rear wheel steering
« Reply #1 on: January 27, 2013, 02:47:22 PM »
i would imagine it would just go round in circles !

Offline Cabilao

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Re: Front wheel drive electric--rear wheel steering
« Reply #2 on: January 27, 2013, 07:08:25 PM »
 ??? ??? ??? interesting concept! show us a video how it drive.
before:
Kreidler RMC(50cc)
CB400N(first bike)
RD350LC(more than one)
XS850(great bike)
CB900F(wish i still have it)
FZR1000(too fast)
Rickman CR900(sold for a good price)
now:
Rusi 125
CB 125 CL(just for fun)
Yamaha XTZ 125
CB750P7(mystery bike)
77/78 cool 2 member

Offline gerhed

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Re: Front wheel drive electric--rear wheel steering
« Reply #3 on: January 28, 2013, 06:54:44 AM »
i would imagine it would just go round in circles !
Worked OK at slow speeds-under 25.
Over 30 it didn't want to turn--had a crash--(sudden left across traffic-over a curb-through a fence)
Project abandoned !
Running gear reconfigured into more traditional form--although it does tilt into corners

http://youtu.be/9Wm_yo8wXzU
« Last Edit: January 28, 2013, 07:10:17 AM by gerhed »
Rides: 75 CB750F, 48 Indian Chief, 67 Triumph TR6, 63Honda CA95
          83 XL600R in CB360 Frame
          3-wheel electric tilting cycle

Offline rb550four

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Re: Front wheel drive electric--rear wheel steering
« Reply #4 on: January 28, 2013, 08:06:36 AM »
Three wheels have never been a good idea. But the electric part of it may be, I like that part.
I have some questions:

Why did you abandon 2 wheels and opt for 3?
Was that a large enough motor to propel this craft for distance?
Did motor have enough power to move the craft and generate power to the batteries?
Would the next move be back to 2 wheels, frontal steering and batteries in hard boxes?
Do you think that the seat height/center of gravity was too high?

This looks like it has been a very interesting project. I would guess that keeping it lightweight and strong has been a real concern .As with early motorbikes , the powerplant has always been an issue on a weight/frame strentgh plane but, they started off with a proven lightweight bicycle frame. This could be the way to go with that little motor you have. The weight / power ratio would be much better but the shear mass of the batteries could be tricky to balance. Have you considered the 3 wheel bicycle that has been popular with the aged and handicapped? That would have all light weight parts, lower friction tires, brakes,and room for batteries and motor,and the strength to carry it all safely. and best of all you can  get parts at any cycle shop.     Yeah, I stop thinking about this right now,too many other projects, but I like yours, just needs some tweaking.
A few Honda 500's, a few Honda 550's, a few Honda 650's, '72 cb 450, a couple 500/550/650 hybrids, and 2001 750. 
  550 Snowbike -Somebody had to do it.
  http://forums.sohc4.net/index.php/topic,101678.0.html             
http://forums.sohc4.net/index.php/topic,137317.msg1550907.html#msg1550907

Offline simon#42

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Re: Front wheel drive electric--rear wheel steering
« Reply #5 on: January 28, 2013, 09:56:03 AM »
you do like a challenge gerhed !

Offline gerhed

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Re: Front wheel drive electric--rear wheel steering
« Reply #6 on: January 28, 2013, 10:05:52 AM »
550,

That project is over for now--works fine around the neighborhood and over to Starbucks early in the morning.(legality issues , I believe).
Very heavy machine--240 lb of batteries, 200 lb of machine--250 lb of Me !--fairly large 7" electric traction motor would get it up tp 45 mph.
Latest project--still 3-wheels--made out of PVC--Electric motor in the front hub--this one tilts into corners also.
Garage is full so I've gone vertical !

ghd
Rides: 75 CB750F, 48 Indian Chief, 67 Triumph TR6, 63Honda CA95
          83 XL600R in CB360 Frame
          3-wheel electric tilting cycle

Offline super pasty white guy

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Re: Front wheel drive electric--rear wheel steering
« Reply #7 on: January 28, 2013, 03:30:05 PM »
Hmmmm, is that an Alfa I spy?

Spwg
Fruit don't talk, fruit just listens... and waits.

Offline gerhed

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Re: Front wheel drive electric--rear wheel steering
« Reply #8 on: January 29, 2013, 04:24:03 AM »
Hmmmm, is that an Alfa I spy?

Spwg

Spwg,

That's actually the Alfa's little brother--Fiat 124 Spyder.
Bought it new in Italy in 1970.--$2400 !

ghd
Rides: 75 CB750F, 48 Indian Chief, 67 Triumph TR6, 63Honda CA95
          83 XL600R in CB360 Frame
          3-wheel electric tilting cycle

Offline Xnavylfr

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Re: Front wheel drive electric--rear wheel steering
« Reply #9 on: January 29, 2013, 04:26:10 AM »
Reverse TRIKES are the NEW tech items!! Check these out!
http://www.rqriley.com/tri-mag.html

The problem even with standard trikes , the outrigger tires need to turn at different rates or the force WILL PUSH you straight ahead. This is why the H/D servi-car were primarily  used at SLOW speed for METER MAIDS.

Xnavylfr(CHUCK)

Offline gerhed

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Re: Front wheel drive electric--rear wheel steering
« Reply #10 on: January 30, 2013, 07:50:50 AM »
Reverse TRIKES are the NEW tech items!! Check these out!
http://www.rqriley.com/tri-mag.html

The problem even with standard trikes , the outrigger tires need to turn at different rates or the force WILL PUSH you straight ahead. This is why the H/D servi-car were primarily  used at SLOW speed for METER MAIDS.

Xnavylfr(CHUCK)

Xnav,

To your point.
I owned a Harley servicar a number of years ago.(see Pic attached)
It was a very interesting machine but it bit me once
when I was on leave from Boot Camp at The Lakes.
Flipped it upside down in a ditch after what I thought
was a minor steering adjustment while riding in a straight line at about 45mph.
I still love 3-wheelers though.
Am I crazy?

GHD
Rides: 75 CB750F, 48 Indian Chief, 67 Triumph TR6, 63Honda CA95
          83 XL600R in CB360 Frame
          3-wheel electric tilting cycle