Projects 1929 Roadster Pickup Build

Any progress? Look forward to some updates.

 

Any updates on your project?

Frenchy

 

My part is pretty much done on this one. I finish welded all the stuff on the frame, and so it's ready for the owners to take back and finish up. Im sure they will update pictures here, or I will make sure to get some pictures from them and update you guys.

Thanks to everyone for your comments and support on this project. It really was a blast to be involved in.

 

The future is so bright for a nice young man with talent, style and enthusiasm. Did mention talent?

HUGE THANKS Chris. It's been really cool to see the positive comments on your work car. We'll be sure to keep you posted.

 

Sorry, meant your work on the car.

 

Hey Chris I only just found this project, The hamb moves so fast i missed it, Its all looking very good.

 

Did you modify the radiator shell. If you did how many inches was it modified from the original lenght.

Frenchy

 

Said it before, I'll say it again, I love this build...so clean and tidy. Like the hairpins too. Any concern they may be too stiff (torsionally) to allow much articulation in the front axle? Assuming the i-beam twists just a smidge, it's probably fine?

 

hello, I am hoping you can help me. I have been following the build of the 1929 rpu and have decided to build my own body, I have looked on the internet and can find no info on width at the bottom of the cowl of depth from fire wall to dash of height of the center of the fire wall. If you can help i sure would appreciate it. thanks

 

nice projet ;-)

 

I'd love to help, but I don't have the car here at the shop anymore. Maybe the owner can chime in

 

<!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <woNotOptimizeForBrowser/> </w:WordDocument> </xml><![endif]--> I love this car, love the original concept, the details, the workmanship.

There was some discussion of suspension and radius rods. Having some suspension knowledge and experience, I have to add my $.02 here.

Henry’s original wishbone layout, front and rear, put the wishbone pivot ball on the centerline of the car. As the car encountered bumps, or the body rolled when turning corners, the suspension pivoted around the ball joints at the ends of the wishbones. The same layout was used front and rear, I’ll use rear suspension for my example, the same applies to the front.

When we split the wishbone, we move the forward radius rod pivots off the centerline, towards the frame rails. Think about what now happens when you turn a corner: the rear axle stays parallel to the ground, so the rear radius rod mounts stay at the same height. But as the frame rolls, the forward ends of the radius rods change height- if you’re turning left, the left one rises and the right one drops. The farther away from the car’s centerline the front mounts are, the more pronounced this effect is. So the radius rods are forced to bend every time the body rolls. Add to this the torque of a healthy motor trying to rotate the rear end under acceleration, and something’s eventually gonna break. The front suspension is more forgiving because a beam axle will twist along its length, in effect acting as an antiroll bar. A tube axle will not twist, thus requiring a different radius rod setup, such as a four bar that pivots at all ends. Rear axle housings don’t twist either, thus requiring a linkage arrangement that allows travel without binding or bending things.

You don’t need to be an engineer to understand this. The axles stay parallel to the ground, the frame does not. Yes, it has worked for decades, more or less. Lots of cars have broken too. A design that requires parts to bind, bend or twist every time the suspension moves is less than ideal, regardless of how elegantly the parts are made. Not trashing Chris here (his work is beautiful), just stating a simple fact.

Check out ElPolacko’s Industrial Chassis website for some brilliant solutions to this problem.

 

Input always appreciated. I'm not sure what you're trying to suggest about the particular project here. How 'bout 2 more pennies or so? Thanks.

 

As for the questions regarding dimensions Chris forwarded, I'm happy to get some measurements. I'm not sure I'm reading this right. One more time for a favor? Thanks.

 

Any updates???

 

did this project ever get finished? Pictures of the finished RPU?