Wattflyer RC Network: RC Universe :: RCU Magazine :: RCU Forums :: RCU Classifieds :: RCU User Reviews :: RCU YouTube
Home Who's Online Calendar Today's Posts RealTime Post Spy Mark Forums Read
Go Back   WattFlyer RC Electric Flight Forums - Discuss radio control eflight > Electric R/C Airplanes > Scratch and Kit Built Aircraft
Register Members List Wattflyer Extras Articles Search Today's Posts Mark Forums Read Social Groups

Scratch and Kit Built Aircraft Discuss and share your scratch built or kit built aircraft as well as building techniques, methods, mediums and resources.

Thank you for your support (hide ads)
Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old 06-23-2014, 11:41 AM   #1
Super Contributor
solentlife's Avatar
Join Date: Oct 2010
Location: Ex UK Brit now in Latvia west coast - Ventspils
Posts: 10,829
View solentlife's Gallery47
Thanked 486 Times in 478 Posts
Club: Founder Member Ventspils RC Club. Ex Waltham Chase and Meon Valley Soaring.
Awards Showcase

Scratchbuilders Award  Scratchbuilders Award  Outstanding Contributor Award  125mph Speed Demon 
iTrader: (0)
Friends: (17)
Default Working on plans of 70" sport aerobatic job ... ULTRAWATT

First of - please bear with me and I know this is WATTflyer and not FUELflyer .. but I really love Wattflyer forum and hope you can share with me this adventure. The model is being set up for either E or Fuel ... so if anyone wants to build - you should have no problems whatever power you wish to put up front !

Online are copies of Colin Ushers plans which closely resemble classic UK models : Wot4, Acro-Wot etc.
There's a whole range to suit flying ability.

One of the best which follows on nicely from the hugely successful and agile WOT4 is the Acro-Wot .... see attached.

It literally combines sleek looks and ability of the WOT4, Edge etc. into a good sunday sport machine.

Similar concept was put together by Colin to produce the Killer-Watt ... a 58" model that will just about pull the stops out on most peoples ability with a 45 glow up front !

He then developed the MEGA-WATT which is 70" span based on a good 60 Glow.

I have a RCGF 15cc and also a 4850 650kv Aero motor sitting around doing nothing ... loads of foam ... loads of pine board ... alloy tubes etc. and a 2.4m x 1.2m sheet of WBP 4mm Ply..... and 8mm Marine ply.

So I converted the Megawatt PDF's to JPG ... and started work on them.... to create what I call "ULTRAWATT" ........

First was to modify so that the fuselage can take the power of a mega e-motor or the 15cc... this means PLYWOOD instead of balsa .. it also means finding ways to compensate to get weight back down again ...

Fuselage modifications :

a) Balsa sides amended to 4mm ply with lightening holes made between formers.
b) The Ply sides are the straight vertical side full length incl. wing seat.
c) Top curved decking is ply formers with depron folded over.
d) Bottom sheet is either laminated sheets of thin balsa or depron.
e) Tail feathers .. Fin, Rudder, Stabs, Elevators are to be laminated 3mm balsa - 3 sheets to make 9mm depth. This imparts great strength and allows easy hingeing into the central balsa layer.
f) Formers will be ply 4mm

The wing came in for the most work ... as I wanted larger shorter span ailerons so I could then fit flaps. This is work still in hand ... but basically the ailerons are 1/3rd span and flaps 1/4 ... The rear spar that on original plan that is angled back is now at angle that provides strength for the hinge line of ailerons and flaps. The size of which should allow extreme control and manoeuvres.
The wing tips were made more lined up with C/L and not swept and this made tip rib perpendicular with the others.

It is planned to fit alloy tubes into the wing halves set at slight cosmetic dihedral and allow the splitting of wing into two ...
The front dowels and rear bolts will need extra to assist with keeping such a wing together during extreme flight .. this being a large model.

Ribs will be a mix of depron 6mm and balsa, with main structural at centre / wing seat and tubes of ply. The ply mainly to add the required strength to carry the wing joint and fitting loads.

The cowl - I am going to try and secure a cowl from another model - preferably a Midget Mustang style .. with the cheek bulges. This will then help to blend in any fuel motors cylinder head etc.

I hope the airframe will have immense strength but little weight penalty ... and be capable of some entertaining flight.

The final finish I intend to revert to traditional methods with one exception ... no Dope. I will secure some ultra light silk from local dress-makers and the PVA this on as covering ... with final cosmetics via airbrush etc.

This is of course a longer term project than many of my others ... with the intention to have a model that I can show of at meetings ... to have something a little different from the EDGE, CAP, EXTRA etc. offerings so often seen.

If anyone has suggestions - then fire away ... even if I don't use them - don't be upset - all ideas are well worth it and filed away for later projects etc.

I hope someone else can have a go at this ... I reckon she'll be a real show stopper ...
If anyone wants the jpg files so they can hack at them - let me know ...

I tried uploading the wing plan as of now - but attachments keeps crapping out on it !!

NOTE : Plans are being worked on continuously - so even above may get changes before finished !


Attached Thumbnails
Click image for larger version

Name:	Acro-wot.png
Views:	148
Size:	97.0 KB
ID:	176212  
Attached Files
File Type: pdf Killerwatt Sheet 1 - fuselage.pdf (896.0 KB, 87 views)
File Type: pdf Killerwatt Sheet 2 - wing.pdf (596.5 KB, 80 views)
File Type: pdf Megawatt Sheet 1 - fuselage.pdf (892.1 KB, 77 views)
File Type: pdf Megawatt Sheet 2 - wing.pdf (619.8 KB, 67 views)

222kph PKJ,EDF Concorde, Mini4,Mig3,T45,PKJ twin,ME109,Edge540,Cessna182,Skymaster Biplane,F15,F16,Badius,Ultimate,SE5,Qbee10,450 Heli,V911,J3 Cub Founder 9x forum: http://groups.yahoo.com/group/Flysky_RC_radio/
- Subscribe my Youtube: "solentlifeuk"
solentlife is offline  
  Reply With Quote

  WattFlyer RC Electric Flight Forums - Discuss radio control eflight > Electric R/C Airplanes > Scratch and Kit Built Aircraft

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Sold Parkzone bnf Sport Cub With flaps working. Will ship 1987tc Airplanes - Electric For Sale & WTB 6 07-01-2014 05:16 PM
Got Sport 40 Slo Poke Plans? Don Sims General Electric Discussions 1 02-02-2014 12:41 PM
Electric motor choice for 70" Revolver: Firepower 80 Sport, Turnigy, Other? Bamawade General Electric Discussions 1 09-05-2013 03:27 PM

All times are GMT +1. The time now is 05:00 AM.

Powered by: vBulletin
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright 2005 WattfFlyer.com
RCU Eflight HQ

Charities we support Select: Yorkie Rescue  ::  Crohn's & Colitis Foundation

Page generated in 0.34912 seconds with 106 queries