Search found 79 matches

by Heli-NuBee
Sat Mar 31, 2012 12:22 am
Forum: Valved pulsejet forum
Topic: Success at Last!
Replies: 20
Views: 6511

Re: Success at Last!

OK, I completed repairs today and she is ready to fly again. I'm sure that I will fly the BobCat again very soon. --------- Roger
by Heli-NuBee
Wed Mar 28, 2012 12:17 am
Forum: Valved pulsejet forum
Topic: Success at Last!
Replies: 20
Views: 6511

Re: Success at Last!

Hello, It has been some time since I last posted any information. I appologize but I have been very busy with great grandaughters and two brothers with serious medical problems. Jet Bill (JB) resurfaced the head of my engine and returned it to me when the reed valve failed but I have not had the tim...
by Heli-NuBee
Thu Dec 22, 2011 10:48 pm
Forum: Valved pulsejet forum
Topic: Success at Last!
Replies: 20
Views: 6511

Re: Success at Last!

Yup, we were right, it was a reed valve alright, see pictures below:
by Heli-NuBee
Thu Dec 22, 2011 2:44 pm
Forum: Valved pulsejet forum
Topic: Success at Last!
Replies: 20
Views: 6511

Re: Success at Last!

Hi Bruce, thanks for your input and assistance. I was pretty sure that I experienced a reed valve failure but I haven't had a chance to look at the reed yet. This was only the third flight on the original reed so life of the reeds valves appears to be pretty short. I still plan to build the Delta Vo...
by Heli-NuBee
Wed Dec 21, 2011 11:43 pm
Forum: Valved pulsejet forum
Topic: Success at Last!
Replies: 20
Views: 6511

Re: Success at Last!

I flew my pulse jet again today. The flight started out quite well but about a minute or so into the flight, the engine changed song and lost power. The difference in power was noticable and about a minute after the change in sound, the engine quit. The sudden lost of the engine was unexpected. My a...
by Heli-NuBee
Thu Nov 17, 2011 4:49 am
Forum: Valved pulsejet forum
Topic: Success at Last!
Replies: 20
Views: 6511

Re: Success at Last!

We had flight number two today with my pulse jet powered BobCat. She started easily and flew great. John did a few aerobatics this time and everything went very well. We used 32 ounces of 80% methanol, 20% nitromethane fuel for an approximately four minute flight. We had two video camera men again b...
by Heli-NuBee
Wed Nov 09, 2011 3:25 am
Forum: Valved pulsejet forum
Topic: Success at Last!
Replies: 20
Views: 6511

Re: Success at Last!

OK, here is the link to my maiden Pulse Jet powered BobCat flight. http://www.youtube.com/watch?v=nCPS_-CM6cw&feature=youtube_gdata I am sorry for the quality but the video was taken by our club photographer. The only time I can see the plane is at startup, takeoff and landing. Maybe some of you hav...
by Heli-NuBee
Thu Oct 27, 2011 6:48 pm
Forum: Valved pulsejet forum
Topic: Success at Last!
Replies: 20
Views: 6511

Re: Success at Last!

Here are a few pictures of the completed pulse jet powered BobCat ready to fly:
by Heli-NuBee
Thu Oct 27, 2011 6:46 pm
Forum: Valved pulsejet forum
Topic: Success at Last!
Replies: 20
Views: 6511

Re: Success at Last!

Here are a few pictures of the BobCat nearing completion:
by Heli-NuBee
Thu Oct 27, 2011 6:41 pm
Forum: Valved pulsejet forum
Topic: Success at Last!
Replies: 20
Views: 6511

Re: Success at Last!

The radio componets, air retract system and balancing weights were installed as they would be in any other RC aircraft: See pictures below:
by Heli-NuBee
Thu Oct 27, 2011 6:37 pm
Forum: Valved pulsejet forum
Topic: Success at Last!
Replies: 20
Views: 6511

Re: Success at Last!

I shielded the elevator with thin alum sheet and made a rear engine mount connected to the rear stab. See pictures below:
by Heli-NuBee
Thu Oct 27, 2011 6:33 pm
Forum: Valved pulsejet forum
Topic: Success at Last!
Replies: 20
Views: 6511

Re: Success at Last!

I made a little platform to mount the Cline regulator, Perry fuel shutoff valve and servo to operate the valve. The fuel system platform was then mounted to the floor of the fuselage with screws. See pictures below:
by Heli-NuBee
Thu Oct 27, 2011 6:29 pm
Forum: Valved pulsejet forum
Topic: Success at Last!
Replies: 20
Views: 6511

Re: Success at Last!

I used a fuel bladder made by Bruce Tharpe inserted into a plastic bag which acts as containment if the bladder ruptures. The end of the bladder and bag assembly was placed between two blocks of wood with a hole cut to the size of the bladder end where the blocks squeezed the bladder end and then th...
by Heli-NuBee
Thu Oct 27, 2011 6:22 pm
Forum: Valved pulsejet forum
Topic: Success at Last!
Replies: 20
Views: 6511

Re: Success at Last!

Once it was reassembled, I cut away a small portion of the fuselage in the rear to accomodate the front engine mount and to make room for the fuel system componets. See Pictures below:
by Heli-NuBee
Thu Oct 27, 2011 6:18 pm
Forum: Valved pulsejet forum
Topic: Success at Last!
Replies: 20
Views: 6511

Re: Success at Last!

I started this build with a Nitro Planes BobCat ARF that was damaged in a forced landing. The fiber glass fuselage had been damaged but the rest of the airplane was in good condition. I found that Nitro Planes had a spare fuselage so I ordered it and started this build with that replacement. See the...