Why there isn't an aerodynamic shaped RV

[cRiPpLe_rOoStEr]

Originally Posted by freebeard

Here is the front wheel drive motor home I had. Sold because I lost my parking space.

What's its driveline? The same of the FWD Cadillacs from the 70's?

[freebeard]

225cu in Chrysler slant six on a (four-speed manual) Clark fork-lift transaxle. Mine had a Carter single-barrel side-draft carburetor, same as the '53 Corvette six.

Later models had a 454 Olds. I don't know if it had the same transmission. The non-CV u-joints are a weak link. Crank the wheel and floor the gas and they go Pop!

[cRiPpLe_rOoStEr]

I don't remember when was the last time I saw a forklift with a manual transmission. Anyway, this setup doesn't really seem to inspire so much confidence to use in a motorhome.

[freebeard]

When's the last time you saw a motorhome with a chrome floor-shift lever?

[fbov]

Originally Posted by nimblemotors

They are all rectangle boxes, really about the worst they can be....

For Cd, perhaps, but reducing a rectangular vehicle's Cd comes at a cost to crosswind stability. Do you really want an RV that steers off the road in a crosswind? Hucho includes a study of crosswind stability vs. body shape, showing the progressive reduction in stability as Cd is reduced.

That's why RV's are all rectangular boxes, and all 911's have rear wings, too.

Have fun,
Frank

[aerohead]

Originally Posted by fbov

For Cd, perhaps, but reducing a rectangular vehicle's Cd comes at a cost to crosswind stability. Do you really want an RV that steers off the road in a crosswind? Hucho includes a study of crosswind stability vs. body shape, showing the progressive reduction in stability as Cd is reduced.

That's why RV's are all rectangular boxes, and all 911's have rear wings, too.

Have fun,
Frank

I believe that Professor Alberto Morelli's 1978 research at the Pininfarina wind tunnel gave us an out with respect to low drag and directional stability.
He found that he could straightforwardly tune the center of pressure to compensate for center of gravity bias.

[freebeard]

Where's all the examples? Are we talking about the banana car? Airplane type rudder?

Ah, the one with Batman fins on the roof.

[aerohead]

Originally Posted by freebeard

Where's all the examples? Are we talking about the banana car? Airplane type rudder?

Ah, the one with Batman fins on the roof.

For Morrelli it would be the CNR 'banana' car of 1976-78.
The shape is zero-lift and very stable in crosswind due to the fins placed behind the rear tires,placing the CP behind the CG.

[redpoint5]

You don't need aerodynamics for a storage unit.

I suggest getting rid of junk instead of storing it, and camping or getting a motel instead of bringing your house with you on your travels.

[aerohead]