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MetalMan · 07:35 PM

The ducted fan idea won't work. I know from experience. A year or two ago I tried it with a 4" ducted fan with a Feigao 12XL and 24v 14Ah lead acid, running through a CC Phoenix 60 ESC. I even went as far as hooking up the ducted fan unit to my Camry's intake, along with a pressure gauge attached. At idle the maximum pressure it recorded was 1/2 PSI...

And if you did go with a higher RPM the ducted fan unit likely won't handle it unless you spend $200+ on it. For larger ducted fans they usually can't spin much faster than 30-40k RPM without self-destructing.

You are familiar with the design of a turbo, correct? It is a turbine, and designed to create pressure. The purpose of a ducted fan is to create thrust, not pressure. This is the main reason why this idea is not likely to work (unless you have hundreds of $$ to spend on really high quality stuff).

	(#9)
MetalMan RC-Monster Mod Offline Posts: 5,297 Join Date: Mar 2005 Location: SoCal	03.24.2009, 07:31 PM The ducted fan idea won't work. I know from experience. A year or two ago I tried it with a 4" ducted fan with a Feigao 12XL and 24v 14Ah lead acid, running through a CC Phoenix 60 ESC. I even went as far as hooking up the ducted fan unit to my Camry's intake, along with a pressure gauge attached. At idle the maximum pressure it recorded was 1/2 PSI... And if you did go with a higher RPM the ducted fan unit likely won't handle it unless you spend $200+ on it. For larger ducted fans they usually can't spin much faster than 30-40k RPM without self-destructing. You are familiar with the design of a turbo, correct? It is a turbine, and designed to create pressure. The purpose of a ducted fan is to create thrust, not pressure. This is the main reason why this idea is not likely to work (unless you have hundreds of $$ to spend on really high quality stuff). SH Z-Car, Custom Crawler, 8s Savage, 12s XTM XLB 1/7 buggy, 4wd 4-link rear/IFS Pro4 truck, Custom Hyper 10 Short Course, Belt-Drive Mammoth ST 1/8 truggy, 4s 17.5 MM Pro HPI Blitz Last edited by MetalMan; 03.24.2009 at 07:35 PM.