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)
Reply
 
Thread Tools Display Modes
Old 01-01-2014, 11:03 PM   #1
tobydogs
love to build!
 
tobydogs's Avatar
 
Join Date: Jan 2010
Location: nj usa
Posts: 2,849
Thanked 197 Times in 194 Posts
Club: rcrcc rockland county,ny
Awards Showcase

Outstanding Contributor Award 
iTrader: (0)
Friends: (13)
Default screwed up and would like to share the mistake on the rv 4-40

hello fellow builders,iv' been building the RV 4-40 since last winter and spent the last few days covering. I'm now up to installing the servos and horns only to dicover a mistake while installing the push rods for the rudder and elevator.

the elevator uses 2 push rods,one for each half and i just discovered my error.... really deserves more .

the 2 push rod tubes that are permanently epoxied in place are exiting where the rudder should have exited and of coarse the rudder tube is where the elevator tubes should have been. my solution is simple and straight forward.

in the pictures supplied you get to see the error and the joiner piece i now need to install sitting on the elevators. i will have to join the elevator halves by using a dremell to slightly cut a recess to seat the joiner and epoxy it in place and then fabricate a thin plywood cap to complete the epoxying for strength. the caps will be small an covered in the yellow monacoat.

everything was going so smoothly with this build and the wing turned out straight even with the funky design greatplanes did. it was a pleasant assembly.

i'm open to any suggestions as i don't plan on spending any more time working on this till the weekend. we are expecting 8 to 10 inchs of snow friday.

as the saying goes....do-do happens,fix it and go fly!! stu


Attached Thumbnails
Click image for larger version

Name:	Picture 278.jpg
Views:	72
Size:	66.9 KB
ID:	172724
Click image for larger version

Name:	Picture 285.jpg
Views:	70
Size:	44.0 KB
ID:	172725
Click image for larger version

Name:	Picture 279.jpg
Views:	78
Size:	64.3 KB
ID:	172726
Click image for larger version

Name:	Picture 286.jpg
Views:	66
Size:	102.9 KB
ID:	172727
Click image for larger version

Name:	Picture 280.jpg
Views:	64
Size:	101.7 KB
ID:	172728

narrow is the place to land...wide is the space to crash....choose the narrow way!
tobydogs is offline  
  Reply With Quote
Old 01-02-2014, 02:45 AM   #2
CHELLIE
Super Contributor
 
CHELLIE's Avatar
 
Join Date: Oct 2006
Location: Hesperia, So. Calif
Posts: 18,015
View CHELLIE's Gallery13
Thanked 2,078 Times in 1,988 Posts
Club: Chino Renegades RC Flying Club
Awards Showcase

Scratchbuilders Award  Scratchbuilders Award  Ambassador Award  100mph Speed Demon 
iTrader: (4)
Friends: (304)
Default

Hi Stu Happy New Year The push rod tubes are not needed, I never use them with a y push rod, just cut a slot in the Fuselage where the elevator push rods should go, and move the push rod down to where it should be at, to get the push rods to go into the new slot, use a long piece of rod or wire, tape it to the y push rod ends, and pull both rods with the y push rod attached to it, simple no need to cut up your elevator. hope that helps, Chellie

I may be getting Older, But I Refuse to grow Up I am Having to much Fun to Grow Up LOL
CHELLIE is offline  
  Reply With Quote
Old 01-02-2014, 04:05 AM   #3
fhhuber
Super Contributor
 
fhhuber's Avatar
 
Join Date: Mar 2013
Posts: 1,624
Thanked 170 Times in 162 Posts
iTrader: (0)
Friends: (1)
Default

Yep... Better to just move the pushrods to the correct locations if possible.

I have an RV4 kit here and can look at the instructions to see if there's any reason not to move the pushrods.
fhhuber is offline  
  Reply With Quote
Old 01-03-2014, 02:34 AM   #4
tobydogs
love to build!
 
tobydogs's Avatar
 
Join Date: Jan 2010
Location: nj usa
Posts: 2,849
Thanked 197 Times in 194 Posts
Club: rcrcc rockland county,ny
Awards Showcase

Outstanding Contributor Award 
iTrader: (0)
Friends: (13)
Default

if i hadn't covered everything before discovering my error i would consider redoing the push rods. i installed the steel joiner to the elevator in around 1/2 hour. complete with covering and am very happy with it's strength.

looks like no work Friday do to snow falling tonight into Friday morning. so after clearing a few driveways I'll install the servos and start the motor/esc connections,then connect everything to the rx/tx. set all the trims.

lastly,i have to find a pilot figure,i figured a small stuffed toy head and just need to choose a good funny type head. cut and glue the canopy and also finish trim sheets for decorating the rv to look just like the old one.


Attached Thumbnails
Click image for larger version

Name:	funjet ultra 064.jpg
Views:	26
Size:	110.1 KB
ID:	172744

narrow is the place to land...wide is the space to crash....choose the narrow way!
tobydogs is offline  
  Reply With Quote
Old 01-03-2014, 03:59 PM   #5
tobydogs
love to build!
 
tobydogs's Avatar
 
Join Date: Jan 2010
Location: nj usa
Posts: 2,849
Thanked 197 Times in 194 Posts
Club: rcrcc rockland county,ny
Awards Showcase

Outstanding Contributor Award 
iTrader: (0)
Friends: (13)
Default

wooohooo!!!its 11 am and 10" of fresh powder snow cleared off 6 driveways and walks for the neighbors. once i get the blower running i love to methodically clear snow. seriously love the amount of work that blower does with out hardly any effort to drive it around. blowing snow is a science i may not have mastered but sure love doing.

now the best part of all!!!! i get to work on the RV 4 all weekend!!! now thats what i call having it made!!!

narrow is the place to land...wide is the space to crash....choose the narrow way!
tobydogs is offline  
  Reply With Quote
Old 01-03-2014, 05:39 PM   #6
solentlife
Super Contributor
 
solentlife's Avatar
 
Join Date: Oct 2010
Location: Ex UK Brit now in Latvia west coast - Ventspils
Posts: 5,176
View solentlife's Gallery47
Thanked 211 Times in 208 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: (8)
Default

Have to say that I would have poked another hole and worked the rods to correct place.

But a wire joiner is what is in most of my models - but as you found - not so easy to fit when elevators already in place. I had to do it on one model - so I actually cut trenches into the two halves, dribbled epoxy into the trenches ... passed the wire through rudder hinge line ... laid it into the trenches and then smoothed the epoxy .... let dry. Covered and it's been fine for years. It also g'teed absolutely aligned elevators.
I usually try to get one leg trapped by the control horn if possible ..

Cheers
Nigel

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
Old 01-03-2014, 06:34 PM   #7
tobydogs
love to build!
 
tobydogs's Avatar
 
Join Date: Jan 2010
Location: nj usa
Posts: 2,849
Thanked 197 Times in 194 Posts
Club: rcrcc rockland county,ny
Awards Showcase

Outstanding Contributor Award 
iTrader: (0)
Friends: (13)
Default

i found it to go in very easy.....way easier to do then redo the pushrods. I'll post some pictures later. my wife and i are hooked on a tv show called "breaking bad" only just started watching season 1 last week and we are going through season 3 now......i don't know what it is ,but no commercials is like watching a long movie and always wanting to know what happen next. clearing snow has wiped me out a bit so resting up is very desirable. i used a dremel to cut the notch for the joiner and 2 part epoxy. very ,very easy and took a 1/2 hour. to relocate the push rods would have required pealing the bottom covering so i could remove the tubes and get at the formers. so i am glad it's ready to go. i really don't know why greatplanes does the parallel rods,it's added weight. it does look cool though and i have it on the greatplanes extra 300s i built. 64" wingspan.

one thing i could do with the double pushrods as the are now is make a pull/pull rudder,it to would be very easy to do using the double tubes. i guess i would need to use braided wire for that and not the piano wire rods.



now i'm getting in the mood to venture down stairs to the workshop for a little experimenting.

narrow is the place to land...wide is the space to crash....choose the narrow way!
tobydogs is offline  
  Reply With Quote
Old 01-03-2014, 07:02 PM   #8
solentlife
Super Contributor
 
solentlife's Avatar
 
Join Date: Oct 2010
Location: Ex UK Brit now in Latvia west coast - Ventspils
Posts: 5,176
View solentlife's Gallery47
Thanked 211 Times in 208 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: (8)
Default

Dual rods ? I always used a Y yoke on end of single rod for mine.

The beauty of dual horns though is individual adjustment.

Nigel

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
Old 01-03-2014, 11:31 PM   #9
tobydogs
love to build!
 
tobydogs's Avatar
 
Join Date: Jan 2010
Location: nj usa
Posts: 2,849
Thanked 197 Times in 194 Posts
Club: rcrcc rockland county,ny
Awards Showcase

Outstanding Contributor Award 
iTrader: (0)
Friends: (13)
Default

these pictures show the rod tubes down the formers and the "Y" idea would make more sense then the duel pushrod where weight is concerned. the 2 center tubes were meant for the elevator but one is used as the rudder. the left side tube is now the elevator. so alls well. as far as the joiner in the elevator halve go,i used a 1/16th pc of base wood to strengthen the area since it wasn't designed for the joiner and i also did get the joiner with the servo horn and screws.

I've got the servos installed and the rx battery and rx switch all set. spent a while setting all the trims mech first and then thru the tx i set the rates for high and lows with 30% expo on each channel.

Saturday i solder in the esc and locate the cg for final placement of the rx battery which is a 6 volt 5cell nmih and can go in any direction needed so i won't be adding lead weight.

the last picture is the next project which I'm waiting for the esc to arrive, a hobbywing 60amp. box say 90mph+ but we'll see.


Attached Thumbnails
Click image for larger version

Name:	Picture 289.jpg
Views:	9
Size:	54.8 KB
ID:	172746
Click image for larger version

Name:	Picture 290.jpg
Views:	13
Size:	88.7 KB
ID:	172747
Click image for larger version

Name:	Picture 292.jpg
Views:	10
Size:	58.5 KB
ID:	172748
Click image for larger version

Name:	Picture 294.jpg
Views:	11
Size:	75.8 KB
ID:	172749
Click image for larger version

Name:	Picture 295.jpg
Views:	12
Size:	82.9 KB
ID:	172750
Click image for larger version

Name:	Picture 297.jpg
Views:	12
Size:	140.3 KB
ID:	172751

narrow is the place to land...wide is the space to crash....choose the narrow way!
tobydogs is offline  
  Reply With Quote
Reply

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

« Previous Thread | Next Thread »

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


All times are GMT +1. The time now is 12:35 PM.


Powered by: vBulletin
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright 2005 WattfFlyer.com
RCU Eflight HQ

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



Page generated in 0.47053 seconds with 50 queries