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invertmast
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Joined: November/07/2008
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| Posted: May/19/2024 at 9:49pm |
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The airplane is surprisingly light weight for its size. The outer wing panels are 13lbs. The entire fuselage section can be lifted and carried by a single person. Structurally speaking, there is not a whole lot that can be done to lighten it up, significantly.
Where the weight reductions will come from is more modern electronics and batteries.
As it was originally flown, it had 13 nicad/nimh batteries, one of which was 18 cells (the retracts are electric). It also had four receivers.
Im looking at being able to fly it with 7 Li-ion batteries. Two for the main fuselage rc stuff, one per outer wing rc, two small ones for smoke pumps and a single 5cell one for the retract. I’ll also likely use ignition BEC’s eliminating four more batteries. This should be a pound or two in weight savings.
Going to standard sized HV brushless servo’s also saves 1.5 oz per servo (theres eleven of them on just the fligh controls). If i remove on servo from each flight control (i can get one servo that has double of what both 1/4 scale servo’s had combined) that saves another pound.
The zinger four blade props were also heavy. Carbon four blade ones should be a wee bit lighter each.
There wont be any substantial savings, but there will be some. Granted, the thing flew fine at whatever weight it was at originally.
This B-29 is the Second 20’ one and the Third that Mac had. The first one was a “small” 16’ span version.
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Thomas W.
Current projects: 25% Beech Starship, 40%Cessna U3B, 1/6.7 F-14 Tomcat, 1/5 T38 Talon, 1/3.7 F8F Bearcat
Twill weave peel ply source, large format 3D printing service
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Scottp47
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Joined: August/01/2007
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| Posted: May/19/2024 at 10:57pm |
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Sign me up, I remember him putting on a show at Warbirds Over Delaware. Nice project you guys!
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Working on Scratch built Lysander,MK1 and P-12
Building JB Macchi 202.
"Takeoffs are optional, landings mandatory"
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Ultimateflying
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Joined: April/17/2011
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| Posted: May/20/2024 at 12:15am |
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That is a Sweet Project. I found the video series on YouTube before I found this thread. Each night I open YouTube hoping for another video to be updated. I find the repair very interesting. I will be following along on this thread as well!!!
Keep up the good work!!!
Trevor
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Ultimateflying
Trevor
Currently On The Bench:
Wendell Hostetler Piper PA15 Vagabond Cub
Future Builds:
Wendell Hostetler 35% RV-4
Meister Scale P-47 Thunderbolt
Meister Scale A6M3 Zero
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Richo07
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| Posted: May/20/2024 at 5:58am |
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I’m following along on YT.
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Find me on You Tube at 'Just RC'.
Building: BUSA 1/3 Fokker DVII.
On hold: Meister Scale BF109 'G' 1/4, Pica FW 190 'D9' 1/6.
Waiting room: Fokke RC BF 109 'K' 1/4.
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Geezer
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| Posted: May/20/2024 at 6:07am |
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Hmmmm all the usual subjects! lol Mac and Co traveled to Bomber Field in Monaville (west of Houston) Texas several times and they flew more than just the bomber though it was the star of the show buy all means. Lots of good memories.
Doc
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Doc
East Tennessee
Rule 1 Power, Use lots, don't be needy!
2 Build light they fly better!
If it was easy everyone would do it!
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warthog
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| Posted: May/20/2024 at 11:00am |
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I might have missed it in the videos but any future plans to add flaps?
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Dan
Westfield, IN
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invertmast
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| Posted: May/20/2024 at 11:15am |
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Quote: warthog I might have missed it in the videos but any future plans to add flaps?
Nope. The airplane doesnt need them and its just additional weight
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Thomas W.
Current projects: 25% Beech Starship, 40%Cessna U3B, 1/6.7 F-14 Tomcat, 1/5 T38 Talon, 1/3.7 F8F Bearcat
Twill weave peel ply source, large format 3D printing service
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levier
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Joined: March/20/2005
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| Posted: June/30/2024 at 7:49am |
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Hey Thomas, What’s the status on the YouTube presentations? Guessing you are tied up at work, vacation?
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