David,
Don't forget that at 9.0:1, the 914 has a lot less compression than the
912s (10.5:1). Combine that with your large blade area and it's not
surprising that it windmills easily.
Nigel
On 12/08/2013 10:04, David Joyce wrote:
> <davidjoyce@doctors.org.uk>
>
>
> Some time ago there was some discussion about stopping & restarting
> the engine in flight. Yesterday I was experimenting with this in order
> to research glide angles with engine idling and actually stopped. I
> was frustrated in this because with the ignition off my prop continued
> to windmill with the speed pulled right back to 50kts. This is with a
> Rotax 914 and a Woodcomp SR3000W, and I guess it is because this prop
> offers appreciably more blade area than say Warp drive blades. For
> what it is worth the engine fired up again immediately on switching
> the ignition back on without needing the starter.
> Regards, David Joyce, G-XSDJ
>
>
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