I have plans

Tony Raven said:

Thanks to the people who helped with contact details for James Robinson
and his wooden bent. The msn address works, I paid my $25 last night by
Paypal and this morning I have the plans in my hot little inbox. I feel
a project coming on!

Unfortunately so do I. I spent some time last night researching
Ackerman steering for a potential bent trike..

...d

David Martin said:

Unfortunately so do I. I spent some time last night researching
Ackerman steering for a potential bent trike..

<clickety google>

Interesting, but is it worth it? Won't it 'ackerise' only at one particular
radius of turn?

--
Wally
www.artbywally.com
www.wally.myby.co.uk

In message <[email hidden]>, Wally
<[email hidden]> writes

Quoted message said:

David Martin said:

Unfortunately so do I. I spent some time last night researching
Ackerman steering for a potential bent trike..

<clickety google>

Interesting, but is it worth it? Won't it 'ackerise' only at one particular
radius of turn?

No. As the radius of the turn gets smaller, and hence the angle of turn
of the wheels larger the difference in angle between the inner and outer
wheels increases - it's not constant difference
--
Chris French

Wally said:

<clickety google>

Interesting, but is it worth it? Won't it 'ackerise' only at one particular
radius of turn?

It should 'Ackerise' at all radii (IIRC) since it is to do with ratios
of turning between the wheels.

More details can be found at Peter Eland's excellent site:
http://www.eland.org.uk/steering.html

Jon

Tony

Have you been here ?

http://spin.xntrick.co.uk/

this guy has built a 2 * 4 from those plans.

paul

"Jon Senior" <jon_AT_restlesslemon_DOT_co_DOT_uk> wrote in message
news:[email hidden]...

Quoted message said:

Wally said:

<clickety google>

Interesting, but is it worth it? Won't it 'ackerise' only at one
particular
radius of turn?

It should 'Ackerise' at all radii (IIRC) since it is to do with ratios of
turning between the wheels.

More details can be found at Peter Eland's excellent site:
http://www.eland.org.uk/steering.html

Jon

paul needham said:

Tony

Have you been here ?

http://spin.xntrick.co.uk/

this guy has built a 2 * 4 from those plans.

It was Wobbly John's wooden bent at Mildenhall that got me started! The
link to the link he has on his site though is a dead end hence the
questions here.

--
Tony

"I did make a mistake once - I thought I'd made a mistake but I hadn't"
Anon

Jon Senior said:

Wally said:

<clickety google>

Interesting, but is it worth it? Won't it 'ackerise' only at one
particular radius of turn?

It should 'Ackerise' at all radii (IIRC) since it is to do with ratios of
turning between the wheels.

More details can be found at Peter Eland's excellent site:
http://www.eland.org.uk/steering.html

Up to a point Lord Acker. Ackerman (actually it was Lankenspurger (sp?)
who came up with the theory) was thinking of solid-tyred wheels. With
pneumatic tyres the turning forces are generated because the tyre treads
are at an angle to the wheel, known as "slip-angle". This applies to the
back as well, so the nice neat diagram has to be greatly modified. In
practice most implementations (eg every production car),use less
compensation. How much less depends on

Tony

Did you get to ride it ? having got over halfway on the wood bits I think
Wobbly John has under sold his wood working skills mine may have to be
hidden under black wood stain to leave the garage !

Without the rear forks [ the pair weigh 5 pounds before the rear slope is
cut into them ] the frame weighs 11 pounds it is almost impossible to even
turn it on my workmate on your own [ which is much to small to build this on
and can barely grip it ] and no way can I hold it in on my drill press to
drill a hole.

I have had to add a piece under the steering hole to make the 4.5 inches I
needed to reach the threaded portion of the front forks , maybe I chose the
wrong forks ? they came from a £5 kids bike with 20" wheels bought from the
local dump.
Just got a better bike [ there goes another £5 ! ] with 20" alloy wheels
which weighs 250 grams less than the steel one I had , evey little helps !

Paul
"Tony Raven" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

paul needham said:

Tony

Have you been here ?

http://spin.xntrick.co.uk/

this guy has built a 2 * 4 from those plans.

It was Wobbly John's wooden bent at Mildenhall that got me started! The
link to the link he has on his site though is a dead end hence the
questions here.

--
Tony

"I did make a mistake once - I thought I'd made a mistake but I hadn't"
Anon