Search found 365 matches

by Nick
Wed Sep 26, 2018 6:06 am
Forum: Valveless pulsejet forum
Topic: Mike's Build Log
Replies: 379
Views: 101939

Re: Mike's Build Log

The spirit of exploration!
by Nick
Sun Sep 23, 2018 9:55 am
Forum: Valveless pulsejet forum
Topic: Mike's Build Log
Replies: 379
Views: 101939

Re: Mike's Build Log

This is going to be so much fun!! :D
On the edge of my seat now Mike!
by Nick
Thu Sep 06, 2018 6:03 pm
Forum: Valveless pulsejet forum
Topic: Mike's Build Log
Replies: 379
Views: 101939

Re: Mike's Build Log

Nice one Mike, those measurements don't half high-light the precision needed with the fuelling volume and position :D
turnkey starting enroute!
by Nick
Mon Aug 27, 2018 3:06 pm
Forum: Valveless pulsejet forum
Topic: Mike's Build Log
Replies: 379
Views: 101939

Re: Mike's Build Log

Way to go I think, - John Wallis tried a turbine on a PJ once - it worked but not enough power for what he wanted.

Looking forward to seeing more of this!

Cheers

Nick
by Nick
Sun Aug 26, 2018 9:45 pm
Forum: Valveless pulsejet forum
Topic: Mike's Build Log
Replies: 379
Views: 101939

Re: Mike's Build Log

All good thanks mate 😆
Always welcome here mate, look forward to seeing in 19👍
by Nick
Sun Aug 26, 2018 5:10 pm
Forum: Valveless pulsejet forum
Topic: Mike's Build Log
Replies: 379
Views: 101939

Re: Mike's Build Log

Hey Mike - sounds like a great idea look forward to seeing that come on!!

Cheers

Nick
by Nick
Thu Aug 24, 2017 6:41 am
Forum: Valveless pulsejet forum
Topic: Mike's Build Log
Replies: 379
Views: 101939

Re: Mike's Build Log

Well, more that I want to do liqid fuel for pulsejet and gaseous fuel for pulsepots... I'm in Costa Rica atm, so not doing anything but dreaming... Hey, Costa Rica seems like a good place to do some dreaming :D I'm only a week off blasting down through Europe on my KTM990! - so I'm dreaming of the ...
by Nick
Wed Aug 23, 2017 6:24 am
Forum: Valveless pulsejet forum
Topic: Mike's Build Log
Replies: 379
Views: 101939

Re: Mike's Build Log

Mike Everman wrote:Nick, refresh my memory; your long duration experiments were propane fired, no?
Hi Mike, yes propane - very tiny amounts - start on alcohol then switch over to gas :D

Are you going to have a crack at a long run?

Cheers

Nick
by Nick
Tue Aug 22, 2017 9:02 am
Forum: Valveless pulsejet forum
Topic: Mike's Build Log
Replies: 379
Views: 101939

Re: Mike's Build Log

Great! I'll redesign on my trip for a full jacket, including water cooling of the "vortexifier". Good stuff, I don't know if the "vortexifier" will need water cooling because of the high temp tolerance of the resin - maybe one with water cooling, one without? What I did discover with water cooling ...
by Nick
Mon Aug 21, 2017 6:43 am
Forum: Valveless pulsejet forum
Topic: Mike's Build Log
Replies: 379
Views: 101939

Re: Mike's Build Log

Nice work Mike - the design looks pretty proven dimensionally I guess we need to build it from something more heat resistant. If you want to send me the stl file I'll get it printed in resin when I get from Europe late sept/oct?

:D

Nick
by Nick
Thu Aug 17, 2017 5:19 pm
Forum: Valveless pulsejet forum
Topic: Mike's Build Log
Replies: 379
Views: 101939

Re: Mike's Build Log

I am very keen on going to the bronze foundry. You know you can 3D print PLA and cast just like lost wax? Local art prof is doing that here in Santa Barbara. We should spend a day or two doing that! Do some suitably difficult to fabricate pulsers. Great stuff! - I hope to see Dave in Sept so hopefu...
by Nick
Thu Aug 17, 2017 5:16 pm
Forum: Valveless pulsejet forum
Topic: Mike's Build Log
Replies: 379
Views: 101939

Re: Mike's Build Log

OK here is the dewatering data from Dave the alchemist :D To get the water out of the ethanol, you need potassium carbonate. Add enough so that there is solid powder remaining at the bottom after a day or so. If it is liquid, you need to add more. Carefully pour off the dry ethanol, wash out the wet...
by Nick
Thu Aug 17, 2017 1:44 pm
Forum: Valveless pulsejet forum
Topic: Mike's Build Log
Replies: 379
Views: 101939

Re: Mike's Build Log

Hi Metiz,

it was a powder(chemical) he added to the ethanol - I'll see if I can find out what it was :)
by Nick
Thu Aug 17, 2017 10:38 am
Forum: Valveless pulsejet forum
Topic: Mike's Build Log
Replies: 379
Views: 101939

Re: Mike's Build Log

Hi Mike, Just a thought but the fuel you are using is ethanol? - very hydroscopic- Dave, a mate of mine, who is well into his chemistry, can process/refine it to remove almost all the water - I can ask him what it is he does to do this ( I recall he added something to the fuel and it solidifies at t...
by Nick
Mon Aug 14, 2017 12:01 pm
Forum: Valveless pulsejet forum
Topic: Mike's Build Log
Replies: 379
Views: 101939

Re: Mike's Build Log

That made my day Mike!! :D :D Cracking little device - I guess once you have finished tweaking it you could get it printed in metal if you wanted to? If I can clear my decks I'll get onto printing one on the resin printer and see how that stands up to the heat. Trying to get the upstairs spare room ...