Vehicle & Technical > Defender

Aerodynamics

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V8MoneyPit:

--- Quote from: "sharpshooter" ---I converted my 110 rom a van, to a TC. And yes, it does slow it down. :?
--- End quote ---


But did you add the roof lights or big tyres at the same time as the conversion?

The main factor in passing any object through the air is frontal area. All the others like the poorly named 'streamlining', friction with the road, etc pale into insignificance.

Of course, the problems relating to the 'trapped' air in the rear buck will have an effect, but not as much as say, adding roof bars or lights. Or adding 12.5 tyres in place of 205's. Anyone who has driven an ordinary saloon with a roof box fitted will testify to this!

When Volvo raced the estate in preference to the saloon, they told the world it was faster than the saloon, but in reality it was for a publicity stunt. And it worked!

extreme90:
it has a green and gold badge on the front grill saying land rover !!! they dont no what aerodynamics are ! lol  :P  but on a serios note.. when i changed my 90 from hard top to truck cab i never noticed any difference

Sharpshooter:
No I didnt have the lights, or the big tyres. I added them later, and slowed it down even more. I must say, the pickup is much more useful though. :)

drmike:
I have thought about this some more. I reckon that the tub will create a lot of turbulance and also act as an air brake with a truck cab. I also believe that it would be mnost noticeable at higher speeds.

I'm not convinced that the front profile is the only factor that counts. I'd have said that teh tub would have quite a daramtic effect but that's guess work!

I wouldn't have thought that larger tyres would affect the aerodynamics adversely although they lower the gearing.

What about rag tops? They flap about a fair bit - won't they affect the aerodynamics?

Mike

Sharpshooter:
What about having a Pick-up with a loadbed cover???

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