Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Best Taper for Boattail on Shortbus Camper

stcyrwm · 10-12-2019, 02:55 PM

Hi Freebeard,

Thank you for your help and your patience!

The NASA van photo is definitely helpful. I could easily use that as a template for what I am doing. Interestingly enough the taper on the NASA van seems pretty darn close to what orbywan used for his RV Aero mod and he had really remarkable results according to his reports.

For what it is worth I did some rough calcs on the taper of the NASA van and came up with 14 degrees. Then I went back to the oerbywan thread and while there isn't as good a photo to measure from, his taper came out by my calcs at 16 degrees - roughly equivalent to the NASA van.

Okay, feeling much more confident to give this a stab...

Thanks again, Bill

10-12-2019, 02:55 PM	#16 (permalink)
stcyrwm EcoModding Lurker Join Date: Jun 2018 Location: Montpelier VT Posts: 26 Thanks: 20 Thanked 7 Times in 6 Posts	Hi Freebeard, Thank you for your help and your patience! The NASA van photo is definitely helpful. I could easily use that as a template for what I am doing. Interestingly enough the taper on the NASA van seems pretty darn close to what orbywan used for his RV Aero mod and he had really remarkable results according to his reports. For what it is worth I did some rough calcs on the taper of the NASA van and came up with 14 degrees. Then I went back to the oerbywan thread and while there isn't as good a photo to measure from, his taper came out by my calcs at 16 degrees - roughly equivalent to the NASA van. Okay, feeling much more confident to give this a stab... Thanks again, Bill