RotorSpace - Member Profile

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Member Type: Standard Users
Profile Views: 1,114 views
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Last Update: December 13, 2011
Joined: September 23, 2010

davh12

Back from con-leave; took the cast off yesterday, but I still walk like a pirate; Within 3 weeks I should have another update for the helo project and hopefully a 2nd flight test vid-clip. Regards, Dave

davh12 → Jordan Dalton: Jordan, No thus far I've just canibalized another RC for electrical parts. I keep burning up motors though. I have a coaxial verion of this one, so I may go with that one while I make changes to the single rotor designs' lower airframe as well as scale up... more
- December 13, 2011
davh12 Installed new pinion gear and a 3rd mast bearing. Hopeful for short hop flights over Xmas.....or tumble, roll, and crash.

5:15

New pinion (Ipod Video).mov
new pinion. running the battery down. I'm hopeful for short hops over X-mas leave.
- December 11, 2011
- fly911 likes this.
- Jordan Dalton Do you build and program your own controls as well?
  
  December 12, 2011
davh12 Fried the 2nd mixer spee controller........working through voltage issues. Dave

3:02

AF-change.MOV
Major changes to the airframe in order to get the CG even lower. I keep frying the mixer/speed controller. Working throught those issues and God willing, hope to do flight prior to Thanksgiving. Regards, Dave
- October 23, 2011
- fly911 likes this.
davh12 OK.........I assembled everything , clicked on the power to discharge the battery for re-charging.....and the mixer went out. When I upgraded the motors, I failed to upgrade the battery and mixer. My thinking was that "what's a few volts less?" ... more

1:30

Mixer fried Ipod Video
- October 3, 2011
- fly911 likes this.
- hkutcher It could be worse. When you self-assemble, you can just install whatever parts you want. When you start putting humans aboard, everything has to be certified, insured, approved, inspected, stamped... At least you're not waiting for approval.
  
  October 4, 2011
  
  - 1 likes this
- fly911 P=I x E
  
  October 4, 2011
davh12 Rotor-prop teetering hub/horns are almost complete. It's steady but slow, shaping, balance check and so on. Unless unforseen mechanical issues arise, tether flight tomorrow. Dave

3:49

Teeter-horns (Ipod Video).mov
Rotor-prop teeter horns are complete, only rough cut. Second tether flight tomorrow....as long as there are no unforeseen mechnical set backs.
- October 1, 2011
- fly911 and davh12 like this.
davh12 Shortly after the 2nd spin up. I assure you that "frankenncopter" will fly. Sorry for my shiney dome. lol. Regards, Dave

3:11

Rotor-hub (Ipod Video).mov
2nd power up. Still a bit of rotor instability. More tweaking this week-end.
- September 23, 2011
davh12 There will be additional changes to the hub over this week-end. Still a bit of instablility between the 10 and 5 o'clock, I assume excessive blade back flapping. I had forgotten that there are a handful of considerations when scaling down or up between s... more

23

2nd spin up (Ipod Video).mov
Shortly after the 2nd power up. Closer view.
- September 23, 2011
davh12 Upper mast bearing mounted; sizing the space between pinion and reduction gears. Dave

3:03

Mast bearing.mov
Upper masy bearing mounted. Sizing the reduction gear for spacing to the pinion gear.
- August 27, 2011
- fly911 and hkutcher like this.
davh12 Back from con-leave; took the cast off yesterday, but I still walk like a pirate; Within 3 weeks I should have another update for the helo project and hopefully a 2nd flight test vid-clip. Regards, Dave
- August 24, 2011
- fly911 likes this.
davh12 3rd mod. battery and mixer are lower on airframe better CG.
- August 3, 2011
davh12 http://envisionrotorsystems.blogspot.com/
- August 3, 2011
davh12 has added a new profile photo.
- August 3, 2011
davh12 sorry it's been a bit; had surgery, bone spur left foot right after 10 days in the field; my web site is down..intuit software sux; temp bog at...give me a minute..sorry.
- August 3, 2011
davh12 hkutcher , There's a company that sells Carbon fiber TR blades for Exec 162/R22. Structual CF parts are ok, but there was a helo that was struck by lightening....CF is a real good for conduction of electricity. the lightening bolt exited out of on... more
- June 14, 2011
- donhillberg More copper paint,& bonding leads-Carbon acts like a capasiter & a strike even with metal will blow a hole on exiting. The main problem with FRP is errosion, Rain & dirt yuck.
  
  June 15, 2011
davh12 Parts cut out of carbon fiber for the changes to the airframe. Trying to catch up. Been in the field alot. Dave

2:39

AF Changes (Ipod Video).mov
CF Airframe changes to lower the CG on the HIR airframe
- June 5, 2011
- fly911 likes this.
- hkutcher I heard about a new composite that's nylon + carbon. It's what Maybach bodies are made of. The parts snap together like a kit and you can lay paint in the mold. So you eliminate the body shop and the paint shop from the factory. Saw it in this TED talk. <... more
  
  June 8, 2011
davh12 Partial summary of the issues that need to be addressed and my approach. CF ordered from Sierra Composites. Waiting. Regards, Dave more
- May 15, 2011
davh12 Lower mast bearing mounted, mast attached, main drive motor mounted. Still on track for tethered flight tomorrow. Dave
- April 23, 2011
- fly911 likes this.
davh12 latest and greatest on airframe configuration. Dave

2:10

Morph 3 Ipod Video
- April 18, 2011
davh12 internet has been down due to remodeling. 4th CG hang test is good. 1st tethered flight this week-end. Fingers crossed. Dave

1:04

HIR-CG4 (Ipod Video).mov
4th CG hang test
- April 18, 2011
- fly911 Good luck with that testing!
  
  April 18, 2011
davh12 Went back to 90 teeter axis from delta 3; need a good mill or drill press w/ 2 axises swivel vise to get the delta 3 right.
- March 27, 2011

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