Side bike?

[pete-blen]

Side bike... its not really a sidecar......
I haz this idea
Build a sidecar that give's the passanger the type of
movement as rideing a bike..move weight foward/aft
and lean left/right .. but unlike the full enduro/dirt units
still have a seat...
I'm going to put a WR/YZ seat & rear guard on , It will have
a front comeing up to a hand rail "handle bars" with slopeing sides
going to the rear of the foot boards...
The bike is still able to lean...


By petenz at 2012-05-02

By petenz at 2012-05-02

By petenz at 2012-05-02

By petenz at 2012-04-24

By petenz at 2012-04-24

[Taz]

I just want to say WTF?

[The Lone Rider]

Looks interesting, but I'm not sure what I'm looking at.

[bogan]

Teach a man to weld, and he'll provide entertainment for a day.

Give a man a welder, and be entertained for months!


Looks good, do you think the separation is enough to lean left without clonking into your passenger?

[pete-blen]

Teach a man to weld, and he'll provide entertainment for a day.

Give a man a welder, and be entertained for months!


Looks good, do you think the separation is enough to lean left without clonking into your passenger?

That is the issue I'm having.. With out going overly wide in the track..
Some units have a total with 400mm wider than what I have so I have room to play
with yet... Hopeing to sit the passanger behined the bike rider..
really it's only when you get to exstreme lean angles you will get a prob..
I'm trying to keep it narrow..might end up pushing it out yet...
What I will do is get the seat on the car , use a chain block lean the bike over
& put the car up to the bike and see what I have got to work with..
With this design I can't look on the net to see what others have done
its sort of make it up as yer go...

The other thing it dose is the car turns into the corner as the bike leans..
You will see the front mount is higher than the rear so it has a longer
arc radius than the rear..pushing / pulling the front of the car across more than the rear...

[bogan]

Ah yup, I guess if you go to extreme lean angles the passenger is probly going to fall off the single bike seat sideways anyway, so you hitting them is probably the least of your worries!

Hmmm, not too sure that turning the sidecar is a good idea, both rear wheels are radially concentric right? so for any corner, they should be pointing in exactly the same direction, I don't think leaning the bike will change the direction of travel of its rear wheel.

[pete-blen]

Ah yup, I guess if you go to extreme lean angles the passenger is probly going to fall off the single bike seat sideways anyway, so you hitting them is probably the least of your worries!

Hmmm, not too sure that turning the sidecar is a good idea, both rear wheels are radially concentric right? so for any corner, they should be pointing in exactly the same direction, I don't think leaning the bike will change the direction of travel of its rear wheel.

Only the bike leans.. So the sidecar will still want to track straight
unless it turns... what it dose is reduces the how wide the scub channel
of the cars wheel is.. that coupled with only 100mm of lead on the cars wheel
should make it very nutrual in the corners..fingers crossed..
http://youtu.be/7a9QOnFUKgE

[bogan]

Only the bike leans.. So the sidecar will still want to track straight
unless it turns... what it dose is reduces the how wide the scub channel
of the cars wheel is.. that coupled with only 100mm of lead on the cars wheel
should make it very nutrual in the corners..fingers crossed..
http://youtu.be/7a9QOnFUKgE

Yeh, but the rear wheel of a leaned over bike is still tracking straight as well isn't it?

Reckon it'd be worth walking it round on full lean and seeing how the sidecar tracks.

[pete-blen]

Yeh, but the rear wheel of a leaned over bike is still tracking straight as well isn't it?

Reckon it'd be worth walking it round on full lean and seeing how the sidecar tracks.

If you lean a rolling wheel it will roll around in a circle , the more you lean it
the tighter the circle will be.. You would have notice if you roll a wheel fast it
will stay stright , as it slows down & starts to fall over it then rolls in a circle till it falls over..
Thats why when you lean a bike it turns..
There are another couple of factor's that come into play as well..

[bogan]

If you lean a rolling wheel it will roll around in a circle , the more you lean it
the tighter the circle will be.. You would have notice if you roll a wheel fast it
will stay stright , as it slows down & starts to fall over it then rolls in a circle till it falls over..
Thats why when you lean a bike it turns..
There are another couple of factor's that come into play as well..

Isn't that just due to precession though, the tyre just applies a turning force to itself as it is unbalanced and trying to fall over.

On a side note, I think we've figure out one reason not many people build these, too bloody hard to think through the design