LocostUSA.com

Very impressive model and program, Ron. I'll be looking forward to the real deal when you get to that point.

Cheers,

_________________
Damn! That front slip angle is way too large and the Ackerman is just a muddle.

Build Log: viewtopic.php?f=35&t=5886

Lonnie,
Thanks

I'm very much looking forward to getting to that point.
For now this is something to do until the weather warms up enough to go back to work hanging the rear axle.

A few more of the particulars,






Ron

_________________
"Age is an issue of mind over matter. If you don't mind, it doesn't matter." - Mark Twain
In my defense the moon was full and I was left unsupervised

Very nice Ron,

So what is the plan for the rails ?

Tim,
I'll use the MGB rails that came with the 1974 I picked up, if they have enough metal left after the rust is removed!
They sit nice and low. If mine can't be saved,http://www.VictoriaBritish.com have the slides, without hardware,for $12.95 a side.( 2 required per seat)

These from a 1983 gmc vandura van should work. If you can find them.


I could probably use the Honda Civic Rails in a pinch. They sit higher .... Then there's Summit or Speedway etc...

Ron

_________________
"Age is an issue of mind over matter. If you don't mind, it doesn't matter." - Mark Twain
In my defense the moon was full and I was left unsupervised

Lonnie asked how I was going to bend the tubes. My reply was, sand filled tubes over forms.....Which should work for everything but the tight bend at the top of the seat sides. The 1 1/2" radius to center line would be a real PITA to bend even using a torch. Dies are available for a 2" radius to center line bend, so the design was changed.

The other small change was to lean the sides out 15 degrees. I think it will be better this way.






The axis for the rotation runs from the middle of the side tube bottom through the center of the tube where the 2" curve begins. The 2" curve was rotated
15 degrees back toward the seat top bow.

Ron

_________________
"Age is an issue of mind over matter. If you don't mind, it doesn't matter." - Mark Twain
In my defense the moon was full and I was left unsupervised

Do you feel you're ready to start making them now, Ron?

Cheers,

_________________
Damn! That front slip angle is way too large and the Ackerman is just a muddle.

Build Log: viewtopic.php?f=35&t=5886

Lonnie,
Yes and no!
Design wise, the frame is as close as it needs to be to start. That is except for the width which I won't really know until the tunnel is roughed in... Which can't happen until I mount the engine and transmission..... Which is next on the list right after hanging the rear axle.!?!
But that can't be done until I can reclaim the build table which is being used to build the new desk, file cabinet and shelves for my wife's office at her clinic.

So right now, when I'm not measuring twice, making piles of sawdust and waiting for glue to dry, I'm in SketchUp trying to work out the brackets for the front UCAs


Hey...you asked

Ron

_________________
"Age is an issue of mind over matter. If you don't mind, it doesn't matter." - Mark Twain
In my defense the moon was full and I was left unsupervised

OK, Ron. I'm actually just anxious to see how they turn out. I hope to do something at least similar. I'll be real interested to see how the forms and bending work out.

Cheers,

Lonnie

_________________
Damn! That front slip angle is way too large and the Ackerman is just a muddle.

Build Log: viewtopic.php?f=35&t=5886

Lonnie,

The forms for the larger curves will be wood.......hmmmm!
While I'm working with the wood I'll make the forms for bending the back. Pictures to follow.

Ron

_________________
"Age is an issue of mind over matter. If you don't mind, it doesn't matter." - Mark Twain
In my defense the moon was full and I was left unsupervised

Lonnie,etc...

Forms for larger dia. bends,
the plan for seats 15" wide at base,

boards marked for 11.5" first bend for back,

Because of spring-back, the first bend will be slightly small.

Circles separated, 1/4" hole drilled for bolt to insure halves align when sanded.

Sides sanded to line with 1/4" quarter round recess routed in facing sides.

Small form for first bend and form for final bend.

glued and clamped.

Halves of the form for the back of the bottom.


St. Patty's Day surprise!


I'll post more pic's when the clamp to hold the tubes for bending is fab'ed up.

The plan for the 2" curves involves, at some point, making a die and anvil out of a plate from an old universal gym weight stack. But for the present the tight turns will be made by slicing and welding the inside of the curve until it's the right size.

The quickest way to" get er done".

Ron

_________________
"Age is an issue of mind over matter. If you don't mind, it doesn't matter." - Mark Twain
In my defense the moon was full and I was left unsupervised

It's definitely getting interesting, Ron. They're going to be great seats, I think.

Cheers,

_________________
Damn! That front slip angle is way too large and the Ackerman is just a muddle.

Build Log: viewtopic.php?f=35&t=5886

Have you had a chance to test out your bending forms yet, Ron?

Cheers,

Lonnie

_________________
Damn! That front slip angle is way too large and the Ackerman is just a muddle.

Build Log: viewtopic.php?f=35&t=5886

Lonnie,
Grabbed a 3ft piece length of 16 ga 1/2" OD tube, laid on the vice as shown, pressed the small form against it and, using the vice, clamped the form in place.

getting this much spring back!

Snapped the bent piece on to the finish size form.

Good guess on the spring back, yes!?!

Ron

_________________
"Age is an issue of mind over matter. If you don't mind, it doesn't matter." - Mark Twain
In my defense the moon was full and I was left unsupervised

Recent changes.
Version 3

The radius to center line for the tops of the side tubes is now 4".
The form for the 4" bends will be made from 1" thick oak in the same manner as the plywood forms.
The oak is so a rubber mallet can be used to force the sand filled tube into shape.
The larger radius in the middle of the side tubes is now 6 1/4" to center line, the same as the top of the seat back.The same forms can be used for both bends.

Also changed to a 4" radius are both bends in the bottom sides.

Each different color in the drawing indicates a separate piece. The pieces to be joined by inserting a 3/8" dia rod between parts leaving a 1/16th" gap, welding, grinding...


Much easier for me this way. Heavier but it may be stronger after all??!

Ron

_________________
"Age is an issue of mind over matter. If you don't mind, it doesn't matter." - Mark Twain
In my defense the moon was full and I was left unsupervised

Looking good, Ron. Yes, good guess on the spring back.

Cheers,

Lonnie

_________________
Damn! That front slip angle is way too large and the Ackerman is just a muddle.

Build Log: viewtopic.php?f=35&t=5886