Random Aerodynamic Oddity of the Day Thread

[freebeard]

I've got the diecast model:


https://i.ebayimg.com/images/g/vAkAA...e5J/s-l400.jpg

Diamond T Dooddle Bug.

[cRiPpLe_rOoStEr]

Originally Posted by kach22i

With all the cargo space, this motorcycle would've been quite handy for couriers in my country. Maybe someone could try a similar project now, and resort to a modern scooter engine upfront, even though it would be a PITA to figure out a suspension arrangement and exhaust routing.

[Bicycle Bob]

Originally Posted by cRiPpLe_rOoStEr

With all the cargo space, this motorcycle would've been quite handy for couriers in my country. Maybe someone could try a similar project now, and resort to a modern scooter engine upfront, even though it would be a PITA to figure out a suspension arrangement and exhaust routing.

Going electric would probably make it easy and slick. I'd like to have some fabric on the sides to allow minor expansion, and a rack for big stuff. I wonder how large a family can fit on top. :-) Full-length foot plates would probably help with the versatility.

[cRiPpLe_rOoStEr]

Originally Posted by Bicycle Bob

Going electric would probably make it easy and slick.

Of course, but the placement of the battery pack on the rear module instead of the front clip would eventually render a normal RWD (or eventually AWD which I remember seeing on some electric scooters) better suited.

I'd like to have some fabric on the sides to allow minor expansion, and a rack for big stuff.

Going too bigger it might be better to resort to the tricycle layout. Remember the German-made Tempo Hanseat tricycles?

I wonder how large a family can fit on top. :-) Full-length foot plates would probably help with the versatility.

Maybe it would be easier to make a stretched version for family hauling too, compared to a regular motorcycle. Selling it and lobbying for some countries to allow more than one pillion passenger would be quite challenging though...

[E.Roy]

Originally Posted by Piwoslaw

Maybe the front was lowered/rounded for better visibility?
Still, looks nice

I agree, I doubt anyone cared about aero for a round-town vocational truck in the 80's
The truck probably has a much smaller engine than US counterparts and therefore they could make grille much smaller due to reduced cooling requirements.

[cRiPpLe_rOoStEr]

Originally Posted by E.Roy

I agree, I doubt anyone cared about aero for a round-town vocational truck in the 80's

Those were from the '90s already. As the Brazilian F-Series had a much slower evolution path than its counterparts elsewhere, the bumpside soldiered on until the early '90s, yet it was only released here after being phased out elsewhere. From late-'92 on, when the light-duty bricknose series was released here, this cowl was done that way because it was simpler to retain structural integrity as a single-piece fiberglass unit AFAIK.

The truck probably has a much smaller engine than US counterparts and therefore they could make grille much smaller due to reduced cooling requirements.

The engines fitted to the medium-duty Brazilian F-Series were also naturally-aspirated until late-'98, when this model was replaced by the current generation still available in the United States and Canada, and which in Brazil was fitted with the Cummins 6BT until its phaseout in Brazil in late-'05. Ford of Brazil was quite hard to understand sometimes...

[Bicycle Bob]

I've got a nice picture of a 1956 Jensen 541 with a rotating air intake block, but I'm just too lazy to jump all the hoops to post it here.

[freebeard]

Use your words?

Such things are usually for agricultural equipment www.freepatentsonline.com/6248145: Cleaner for rotating air-intake filter -- United States Patent 6248145

Is it an active grille block?

Can a brake rotor be an aerodynamic oddity?

Lighter, Better-Performing Brake Rotor From 3D Printing: The Cool Parts Show #27

Massive [pun] weight reduction and better cooling

A typical brake rotor for this car about 32 pounds. This rotor 12
pounds. Significant weight savings that translates to
greater acceleration, and greater fuel economy. These
lattices are dramatically more effective at heat transfer. The
heat transfer ability of this rotor is five times a typical
rotor. Less surface area means less brake dust accumulation 95%
less and because of the material which we'll talk about, this
won't rust.

Those are not rookie numbers. By tuning the particle size of the ceramic and aluminum powders they engineer the grain structure to be isotropic.

[Bicycle Bob]

OK - although I Really wish there was a direct input from my computer, like every other site I use. The 1956 Jensen 541 has a wide oval air intake, with a shutter that rotates like a carburettor choke, along the long axis. It is manually controlled, and recommended for quick warm-ups, but probably gave better performance if partly closed at speed. Unfortunately, there were no diffusers and ducting to reduce turbulence, as needed for an ideal variable intake.

[freebeard]

Like this then?


www.alburyrcmodels.com.au/rotating-vane-butterfly-vent

OK - although I Really wish there was a direct input from my computer, like every other site I use.

Now this is interesting. How does it fail?

How does adding a picture to an Ecomodder album from a local source compare to hot linking a site where it does work?