This could be fun at the AR

[flymo]

A jet powered merry go round

http://www.youtube.com/watch?v=nTeevHnWmNQ

[DarrenSV650S]

That thing looks so dodgy. Looks fun though

[hovis]

looks a bit slow

[flymo]

looks a bit slow

only because they are pussies. I reckon a bunch of ratted bikers would have that thing going like a James Bond centrifuge

[hovis]

only because they are pussies. I reckon a bunch of ratted bikers would have that thing going like a James Bond centrifuge

im sure yorkie chris could retro fit my blade enginge to it. lol

[Spiderman]

I'd have a go :)

[gruntygiggles]

OH


GOOD


GRIEF...lol

Looks like fun :-)


not having it at the AR though ;-)

[keith_d]

I wonder how fast a person has to go before their drag equals the twenty or thirty pounds of thrust those pulse jets can deliver. With a decent fuel supply I suspect that thing could have ended up going quite fast.

When are we getting one???

Keith.

[speedplay]

knee down anybody?

[yorkie_chris]

im sure yorkie chris could retro fit my blade enginge to it. lol

Nah this calls for a V8 :-P

I wonder how fast a person has to go before their drag equals the twenty or thirty pounds of thrust those pulse jets can deliver. With a decent fuel supply I suspect that thing could have ended up going quite fast.

When are we getting one???

Keith.

30lbs ~ 15kg

150 = rho V^2 Cd A
(yes put the thrust in newtons, you mongchild)
If you reckon a bloke is a cube, then Cd is about 1.05, A would be about 4 foot by 3 (sat down), call is 1.5m^2 for a laugh.

With that lot V = ~7.96m/s ... 30lbs is pretty near as far as I can guess from watching the vid.



That is a lockwood-hiller pulsejet.http://www.aardvark.co.nz/pjet/images/valveless1.jpg
This one produced about 300lbs of thrust, but was made in a lab rather than a scrapyard heh.

[dizzyblonde]

30lbs ~ 15kg

15 = rho V^2 Cd A

If you reckon a bloke is a cube, then Cd is about 1.05, A would be about 4 foot by 3 (sat down), call is 1.5m^2 for a laugh.

With that lot V = ~2m/s ... they have more than 30lbs thrust!



That is a lockwood-hiller pulsejet.http://www.aardvark.co.nz/pjet/images/valveless1.jpg
This one produced about 300lbs of thrust, but was made in a lab rather than a scrapyard heh.


Chris you nerd.....now get in that garage and make one:mrgreen:

[yorkie_chris]

Chris you nerd.....now get in that garage and make one:mrgreen:

Actually I did build one for a mate in the RC plane hobby years ago from some plans found randomly on the net. He turned the forms for the cones on a woodturning lathe (in his shed, of course), and I gas welded strips of steel cut out of old 486 computer cases around the forms.

Only lasted a few flights before it burnt through and he got one made out of stainless, but the plane was clocked by doppler sound recording at over 150mph on flyby!

[orose]

Now we know why you were talking about doing a weird twisty affair for DPs exhaust though... the SV engine will only be there to start one of those :)