Vic Smeed Tomboy r/c electric - RC Groups
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Aug 26, 2010, 02:58 AM
Scott R/C Time Pilot
orange&white's Avatar
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Vic Smeed Tomboy r/c electric


Started a Vic Smeed Tomboy today. I didn't have any 3/16" anything, so I am substituting it with 1/8" x 3/16" hard balsa. I have a Dave North hand wound dlRK blue and red wonder and 610 2s pack ready to go.

Scott
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Aug 26, 2010, 08:18 PM
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Chris Jenkins's Avatar
Well done....keep the pictures coming. You will love this model !
Aug 26, 2010, 08:39 PM
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I'm following along, Scott. Have fun!

Soft landings,

Joe
Aug 27, 2010, 02:45 AM
Scott R/C Time Pilot
orange&white's Avatar
Thanks Guys more to come.

Scott
Aug 27, 2010, 03:08 AM
Scott R/C Time Pilot
orange&white's Avatar
Fuse is getting close, now planning gear positions and access to the gear when its done. I looked at the blue wonder, too much power, so I am going with a Lensrc 17t CD/ROM motor, gws 8-4 prop, C.C. Phoenix and a either a 610mah 2s or 800mah 2s lipo. The landing gear is lashed to the firewall with Kevlar thread and thin cA. more tomorrow

Scott
Aug 27, 2010, 06:32 AM
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vintage1's Avatar
If the pack will fit just behind the former the gear is laced to, put it there.

servos easy: 1/4 sq spruce rails across fuselage near CG. Access via wing

Lightweight pushrods or snakes to tail.

rx somehwer in a balsa box ..

Or you can make a servo/RX tray out of 1/8" balsa with 1/16" ply strips to take screws..glue under lower window frame.
Aug 27, 2010, 09:19 AM
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What Vinny says....spot on!

Soft landings,

Joe
Aug 27, 2010, 10:14 AM
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Closed loops are lighter and more precise.

Regards Ian.
Aug 27, 2010, 12:28 PM
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vintage1's Avatar
Quote:
Originally Posted by Circlip
Closed loops are lighter
true
Quote:
and more precise.
But only if you get the geometry right.
Aug 27, 2010, 02:18 PM
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Greg Knipp's Avatar
orangeandwhite are you reducing dihedral or wing incidence at all? It seems like those issues are always popping up when doing RC conversioons to these old timers.
Aug 27, 2010, 04:19 PM
Scott R/C Time Pilot
orange&white's Avatar
Here is the rc version of the Tomboy as drawn by Boddington. I believe the dihedral is the same as the FF version.

Scott
Aug 27, 2010, 04:37 PM
Scott R/C Time Pilot
orange&white's Avatar
Quote:
Originally Posted by vintage1
If the pack will fit just behind the former the gear is laced to, put it there.

servos easy: 1/4 sq spruce rails across fuselage near CG. Access via wing

Lightweight push rods or snakes to tail.

rx somewhere in a balsa box ..

Or you can make a servo/RX tray out of 1/8" balsa with 1/16" ply strips to take screws..glue under lower window frame.
Thanks Vintage, yes, the battery will fit against the firewall with velcro, and make a hatch. A Rx / servo tray made of 1/16 balsa with 1/16 ply strips at the c.g. under the wing. Kevlar pull pull on the elevator and rudder.

Scott
Aug 27, 2010, 06:03 PM
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Greg Knipp's Avatar
Nothing looks like it has been changed in those areas. That is a good thing as I have started with the wing. I willbe using the Hobby Lobby Esskay 400XT up front. Should be a great cruiser at about 1/3 throttle.
Aug 27, 2010, 07:24 PM
Scott R/C Time Pilot
orange&white's Avatar
Quote:
Originally Posted by Greg Knipp
Nothing looks like it has been changed in those areas. That is a good thing as I have started with the wing. I willbe using the Hobby Lobby Esskay 400XT up front. Should be a great cruiser at about 1/3 throttle.
What battery with that 400xt? and what will the auw be?

Scott
Aug 28, 2010, 12:24 AM
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Greg Knipp's Avatar
Per Vintage 1's recommendation I am going with 2s lipos and a 9X7 or 10X6 prop. With this set-up he figures it would best duplicate the Mills .75 diesel performance she was designed for. I am shooting for 11 to 14 ozs. with this one. I don't know what most folks are achieving with the RC assist type but it seems to me I saw 12 ozs. somewhere.


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