RE: Top Flite '.60 size' P-51D Mustang ARF: Building & Modifications    Gallery
View related threads: (in this forum | in all forums)

Logged in as Guest



Users viewing this topic: none
    Search This Thread  
 
Printable Version

All Forums >> RC Airplanes >> RC Warbirds and Warplanes >> RE: Top Flite '.60 size' P-51D Mustang ARF: Building & Modifications
Page: <<   < prev  84 85 [86] 87 88 89 90 91 92 93   next >   >>  

Tower Hobbies Get Coupon Codes Brands  
Login
Message << Older Topic   Newer Topic >>
RE: Top Flite '.60 size' P-51D Mustang ARF: Building & ... - 11/8/2012 5:22 PM   
acdii


 

Posts: 2293
Score: 155
Joined: 1/31/2011
Last Login: 5/20/2013
From: Capron, IL, USA
Status: offline 		man, my hatch is too small now after seeing yours. I was just planning a small hatch with door hinges and a magnet, but now, rethinking it.

_____________________________

http://www.facebook.com/pages/B-17e-Desert-Rat-Restoration-Project/218159428244374

Hide Signatures

(in reply to badazzgti03)
       Post #: 2126

RE: Top Flite '.60 size' P-51D Mustang ARF: Building & ... - 11/8/2012 9:45 PM   
badazzgti03


 

Posts: 276
Score: 100
Joined: 11/16/2007
Last Login: 5/24/2013
From: Montgomery Village, MD, USA
Status: offline 		do it!! its a great mod!!!

Hide Signatures

(in reply to acdii)
       Post #: 2127

RE: Top Flite '.60 size' P-51D Mustang ARF: Building & ... - 11/9/2012 2:41 PM   
badazzgti03


 

Posts: 276
Score: 100
Joined: 11/16/2007
Last Login: 5/24/2013
From: Montgomery Village, MD, USA
Status: offline 		A little more work done last night....Started the B/C conversion. Removed the balsa sheeting and spare behind the cockpit. Thinking about remaking the frame spares that came with the conversion kit they don't seem to be strong enough...they are a hard ply/balsa mix and they kinda brake apart when trying to be removed from the die cut wood sheet. But here are a few pics of progress.





Hide Signatures

(in reply to badazzgti03)
       Post #: 2128

RE: Top Flite '.60 size' P-51D Mustang ARF: Building & ... - 11/12/2012 6:13 PM   
badazzgti03


 

Posts: 276
Score: 100
Joined: 11/16/2007
Last Login: 5/24/2013
From: Montgomery Village, MD, USA
Status: offline 		Got a little bit more done on the conversion. should be done with it this week, but its coming together very smooth. Pics...





Hide Signatures

(in reply to badazzgti03)
       Post #: 2129

RE: Top Flite '.60 size' P-51D Mustang ARF: Building & ... - 11/12/2012 7:39 PM   
acdii


 

Posts: 2293
Score: 155
Joined: 1/31/2011
Last Login: 5/20/2013
From: Capron, IL, USA
Status: offline 		 Are you going to remove the dorsal fin?  Here is the Topflite B conversion on their GS kit. It's pretty much done except for the cowl and side pieces of the cockpit. 

Attachments
Click to see fullsize image.
Click for fullsize


_____________________________

http://www.facebook.com/pages/B-17e-Desert-Rat-Restoration-Project/218159428244374

Hide Signatures

(in reply to badazzgti03)
       Post #: 2130

RE: Top Flite '.60 size' P-51D Mustang ARF: Building & ... - 11/12/2012 8:53 PM   
badazzgti03


 

Posts: 276
Score: 100
Joined: 11/16/2007
Last Login: 5/24/2013
From: Montgomery Village, MD, USA
Status: offline 		lookin good on that GS...I'm keeping the dorsal fin on figure be a tad unique.

Hide Signatures

(in reply to acdii)
       Post #: 2131

RE: Top Flite '.60 size' P-51D Mustang ARF: Building & ... - 11/13/2012 1:28 AM   
acdii


 

Posts: 2293
Score: 155
Joined: 1/31/2011
Last Login: 5/20/2013
From: Capron, IL, USA
Status: offline 		Argh why do I keep doing that. Its a Gold Edition, not Giant Scale. DOH. Sorry bout that.  I started it last year about this time, finally got the engine mounted last week and the cowl started.  I have to remember to bring my scal with so I can weigh it and get a general idea what it will weigh when completed.


_____________________________

http://www.facebook.com/pages/B-17e-Desert-Rat-Restoration-Project/218159428244374

Hide Signatures

(in reply to badazzgti03)
       Post #: 2132

RE: Top Flite '.60 size' P-51D Mustang ARF: Building & ... - 11/13/2012 9:26 AM   
wesjon


 

Posts: 59
Score: 100
Joined: 1/14/2010
Last Login: 4/3/2013
From: London, UNITED KINGDOM
Status: offline 		 Hey guys

What receiver battery are you using in this bird? I have the usual 7 servos plus Lado retract units. Will a 6v 2500mah do? The retract motors turn off once they feel resistance so wont drain the battery.

Cheers
Wes


Hide Signatures

(in reply to acdii)
       Post #: 2133

RE: Top Flite '.60 size' P-51D Mustang ARF: Building & ... - 11/13/2012 1:28 PM   
acdii


 

Posts: 2293
Score: 155
Joined: 1/31/2011
Last Login: 5/20/2013
From: Capron, IL, USA
Status: offline 		Typically the retracts should have their own pack, just in case.    I use Life packs for all my planes now, 2300mah lasts a pretty long time.

_____________________________

http://www.facebook.com/pages/B-17e-Desert-Rat-Restoration-Project/218159428244374

Hide Signatures

(in reply to wesjon)
       Post #: 2134

RE: Top Flite '.60 size' P-51D Mustang ARF: Building & ... - 11/13/2012 3:58 PM   
thebluemax



Posts: 654
Score: 100
Joined: 1/17/2002
Last Login: 5/24/2013
From: Mullica Hill, NJ, USA
Status: offline 		I had a 6v, NiMh 2000 mah pack in there and on the bench she was browning out big time on 2.4ghz. On 72mhz it would do it too.  As a test I tried a PCM and a FM Rx.  On PCM it would go into failsafe and on FM it was glitching like it was was getting hit. I switched it to the 2300mah, A123 pack and there are no longer any issues with browning out on any of the RXs I tried.  This A123 pack also runs my Switchglo on-board glow.  I also had the brown out problem whether or not the Switchglo was hooked up or not.  So it was not the onboard glow.  Although I am sure it did contribute to the problem. My retracts are Spring Air but could run the Lado's with no problem.

I have 8 servos in mine, 6 digital and 2 analog.  Using 500mah per digital and 350mah for analog the minimal requirement is 3700mah  ( (6*500)+(2*350)).  I am using a 2300mah A123 pack which is less than the 3700mah but that pack is capable of supplying 70 amps of power which is more than enough where the other is 2 amps.  If you can go with A123's do it.  You just need to make sure all your servos can handle 6 volts as you do not want to use a regulator.       

Now if I can just get my engine to run reliably I would maiden this thing.  Regulator problems. First it was dumping fuel and then there was not any fuel at all.  The new metal plunger is too small even though it is for a YS-120. So I used some new parts with the original metal plunger.  I might have it fixed this time but I just have not had a chance to get out to try it

Go with the A123's.  You will not be sorry.....


quote:

ORIGINAL: wesjon

 Hey guys

What receiver battery are you using in this bird? I have the usual 7 servos plus Lado retract units. Will a 6v 2500mah do? The retract motors turn off once they feel resistance so wont drain the battery.

Cheers
Wes




Hide Signatures

(in reply to wesjon)
       Post #: 2135

RE: Top Flite '.60 size' P-51D Mustang ARF: Building & ... - 11/13/2012 4:29 PM   
wesjon


 

Posts: 59
Score: 100
Joined: 1/14/2010
Last Login: 4/3/2013
From: London, UNITED KINGDOM
Status: offline 		 Using a Powerbox Sensor switch which accepts A123's and has built in regulator so should be fine. What brand are you guys using? There dont seem to be many aroung the UK...

Thanks
Wes


Hide Signatures

(in reply to thebluemax)
       Post #: 2136

RE: Top Flite '.60 size' P-51D Mustang ARF: Building & ... - 11/13/2012 5:09 PM   
thebluemax



Posts: 654
Score: 100
Joined: 1/17/2002
Last Login: 5/24/2013
From: Mullica Hill, NJ, USA
Status: offline 		You may still have an issue with the powerbox sensor but that is somthing you will need to keep an eye on.  If you get a chance check out this forum.  Even though you may not be using this equipment it has lots of good information in there about batteries and voltage drops.   www.rcgroups.com/xtreme-power-systems-483/



I purchased mine from:

www.electrodynam.com/rc/index.shtml    It looks like they now have 2500mah packs and no longer have the 2300

and  from

epbuddy.com/

Good luck with whatever you decide to do.


quote:

ORIGINAL: wesjon

 Using a Powerbox Sensor switch which accepts A123's and has built in regulator so should be fine. What brand are you guys using? There dont seem to be many aroung the UK...

Thanks
Wes




Hide Signatures

(in reply to wesjon)
       Post #: 2137

RE: Top Flite '.60 size' P-51D Mustang ARF: Building & ... - 11/13/2012 7:50 PM   
acdii


 

Posts: 2293
Score: 155
Joined: 1/31/2011
Last Login: 5/20/2013
From: Capron, IL, USA
Status: offline 		Aren't digitals overkill for a warbird of this size?   I can see for pattern and 3D, but the warbirds should fly just fine on analog servos where you wouldn't need large packs, even with 8 servos since only 5 are used while flying, the others, flaps and retracts only when landing.  the problem Im running into is weight. With the air robarts and tail gear, working wheel doors and extra servos and sequencer, the plane has got some weight to it now.  There are 9 servos in mine, 10 if I use one for the choke.

_____________________________

http://www.facebook.com/pages/B-17e-Desert-Rat-Restoration-Project/218159428244374

Hide Signatures

(in reply to thebluemax)
       Post #: 2138

RE: Top Flite '.60 size' P-51D Mustang ARF: Building & ... - 11/13/2012 9:07 PM   
thebluemax



Posts: 654
Score: 100
Joined: 1/17/2002
Last Login: 5/24/2013
From: Mullica Hill, NJ, USA
Status: offline 		I don't know if it is or not.  It was what I had on hand at the time.  I used Hitec digitals and was able to use the Hitec programmer on them for setting all the throws. Something I wanted to try out.  The digitals are on the ailerons, rudder, elevator and flaps. The other two analogs are for the throttle and retracts.   The flaps are programmed to only go down. I was able to better center all of the servos without the need for sub trim.  I guess 3D and aerobatics like the better precision with digitals but as a benefit I have a little more precision too.  Of course I won't know until I can get it off the ground.   

As for the need for a larger pack I had the same problems on planes with only 5 analog servos.  Now on these planes the packs were 4,8 volts and I was able to fix that by going to a 6.0 volt pack with the same capacity and no regulator.  But other planes with just 5 digitals and a 6.0  volt pack with no regulator,  I had the same problem and I fixed that with the A123 batteries.  

I am not an electronics guy so this is hard for me to explain but from what I understand this is a voltage management problem.  The amps required for the servos is more than the pack has capacity for so it tries to compensate by pushing more voltage to it causing an instaneous voltage drop in the pack. This drop goes below 4.4 volts the RX re-boots / browns out.  The receiver would indicate a brown out / reboot condition even when the battery pack just came off the charger, fully charged.  So it was not the amount of charge in the battery but how much it can provide.  Also, some of these 2.4ghz Rxs with telemetry and stuff are like small computers and require a little bit more to make them run.  

Again I am no electronics guy. I just know I had these problems with those packs and when I made these changes and upgraded it all went away.     I am not totally sure but if I remember correctly the A123 packs I have are about an ounce or two heavier than the NiMh packs I was using.

Hide Signatures

(in reply to acdii)
       Post #: 2139

RE: Top Flite '.60 size' P-51D Mustang ARF: Building & ... - 11/14/2012 12:08 AM   
Bob Paris


 

Posts: 1273
Score: 110
Joined: 11/4/2002
Last Login: 5/24/2013
From: Lahaina, HI, USA
Status: offline 		Hi Guys,
I use one 4000 ma. sub-c nickle-5 cell battery in mine. I use 7 Airtronics 94322 servo's, all analog and a set of Lado retracts. I mounted my battery aft near the trailing edge of the wing, for correct CG. The analog servo's work like a charm and have for years...though I needed to replace the battery once already ( I also get all my reciever batteries from "Peak Electronics" ). The 94322 is a standard BB servo...and @ $15.00 a piece, not only inexpensive, but have more then enough power to do the job. I also powered my airframe with a K&B 1.00...lots of power and great vertical. I do not see the need for digital servo's...for they cost more and eat up much more power then analog servo's do. Standard servo's are more then enough for this bird...and if you look back to the models history...in the beginning the servo's used to fly the old red box model, had no were near the power, or have the reliablility of today's servo's.

Its a great flying model and love its perdicable handeling.

Soft Landings Always,
Bobby of Maui

Attachments
Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize


< Message edited by Bob Paris -- 11/14/2012 12:40 AM >

_____________________________

AMA 15016
Say what you mean, mean what you say...and !#$& it if you can''t take a joke.

Hide Signatures

(in reply to thebluemax)
       Post #: 2140

RE: Top Flite '.60 size' P-51D Mustang ARF: Building & ... - 11/15/2012 2:23 PM   
badazzgti03


 

Posts: 276
Score: 100
Joined: 11/16/2007
Last Login: 5/24/2013
From: Montgomery Village, MD, USA
Status: offline 		back to the grind....
here are some updated pics...everything is coming together kinda good just still a lot of sanding and wood filler to try and get that canopy to fit well.







Hide Signatures

(in reply to Bob Paris)
       Post #: 2141

RE: Top Flite '.60 size' P-51D Mustang ARF: Building & ... - 11/15/2012 4:36 PM   
JeffH


 

Posts: 1883
Score: 114
Joined: 1/17/2002
Last Login: 5/24/2013
From: Carrollton, VA, USA
Status: offline 		The B-models do not use the dorsal fin.

Hide Signatures

(in reply to badazzgti03)
       Post #: 2142

RE: Top Flite '.60 size' P-51D Mustang ARF: Building & ... - 11/15/2012 5:26 PM   
badazzgti03


 

Posts: 276
Score: 100
Joined: 11/16/2007
Last Login: 5/24/2013
From: Montgomery Village, MD, USA
Status: offline 		Yes I know but I'm keeping it

Hide Signatures

(in reply to JeffH)
       Post #: 2143

RE: Top Flite '.60 size' P-51D Mustang ARF: Building & ... - 11/15/2012 6:08 PM   
acdii


 

Posts: 2293
Score: 155
Joined: 1/31/2011
Last Login: 5/20/2013
From: Capron, IL, USA
Status: offline 		 Well.....it will be unique.  I think you are having fitment problems due to the dorsal fin though. The angle of the turtle deck is too steep because you ended it before the dorsal instead of the fin. If you look at my fuse, you can see the difference.  

Attachments
Click to see fullsize image.
Click for fullsize


_____________________________

http://www.facebook.com/pages/B-17e-Desert-Rat-Restoration-Project/218159428244374

Hide Signatures

(in reply to badazzgti03)
       Post #: 2144

RE: Top Flite '.60 size' P-51D Mustang ARF: Building & ... - 11/15/2012 7:50 PM   
badazzgti03


 

Posts: 276
Score: 100
Joined: 11/16/2007
Last Login: 5/24/2013
From: Montgomery Village, MD, USA
Status: offline 		it is a tad steep but the slop pretty much matches up with the dorsal area. I still need to sand/cut the forward part of the turtle deck where the canopy is to get proper fitment.

I'm not the only one http://www.airplane-pictures.net/image22103.html

Hide Signatures

(in reply to acdii)
       Post #: 2145

RE: Top Flite '.60 size' P-51D Mustang ARF: Building & ... - 11/15/2012 10:24 PM   
Bob Paris


 

Posts: 1273
Score: 110
Joined: 11/4/2002
Last Login: 5/24/2013
From: Lahaina, HI, USA
Status: offline 		Hay jeffH,
Yes...some "B" models did have the dorsal fin. It was a field install and if you go looking, you may just find one.
Bob Paris

_____________________________

AMA 15016
Say what you mean, mean what you say...and !#$& it if you can''t take a joke.

Hide Signatures

(in reply to JeffH)
       Post #: 2146

RE: Top Flite '.60 size' P-51D Mustang ARF: Building & ... - 11/16/2012 2:16 AM   
Chad Veich



Posts: 6154
Score: 265
Joined: 12/13/2001
Last Login: 5/24/2013
From: Litchfield Park, AZ, USA
Status: online
quote:

ORIGINAL: Bob Paris
Hay jeffH,
Yes...some ''B'' models did have the dorsal fin. It was a field install and if you go looking, you may just find one.
Bob Paris


Actually the dorsal on the B/C Mustang was not really uncommon at all. It is a common misconception that the dorsal was added to the D model Mustang in order to regain some stability from the loss of side area when the spine was cut down for the bubble canopy. If that were true then the dorsal would, of course, be superflous on the high back Mustangs. However, the truth is the dorsal was added to increase the strenth of the vertical fin which had suffered from numerous failures during violent manuevering. Thus it was added in the field for safety purposes to many high back Mustangs. Several flyable B/C Mustangs have been restored with dorsals as a matter of fact.





Hide Signatures

(in reply to Bob Paris)
       Post #: 2147

RE: Top Flite '.60 size' P-51D Mustang ARF: Building & ... - 11/16/2012 4:10 AM   
acdii


 

Posts: 2293
Score: 155
Joined: 1/31/2011
Last Login: 5/20/2013
From: Capron, IL, USA
Status: offline 		To do it right though, the dorsal should be removed, the turtle deck put on correctly and the dorsal reinstalled so it lines up correctly. Lot of work, but the lines will be cleaner.


_____________________________

http://www.facebook.com/pages/B-17e-Desert-Rat-Restoration-Project/218159428244374

Hide Signatures

(in reply to Chad Veich)
       Post #: 2148

RE: Top Flite '.60 size' P-51D Mustang ARF: Building & ... - 11/16/2012 2:39 PM   
badazzgti03


 

Posts: 276
Score: 100
Joined: 11/16/2007
Last Login: 5/24/2013
From: Montgomery Village, MD, USA
Status: offline 		ummm ok...you have have to remember I'm doing this to an ARF not a kit....things are not going to line up perfectly. I have it as lined up and perfect as I can get it. I'm not going to rip everything apart to start over again..screw that.... that's what wood filler is for..besides who says I have to play by the rules???did the Galloping ghost or the Strega??? with they're modified turtle decks and clipped wings...

Hide Signatures

(in reply to acdii)
       Post #: 2149

RE: Top Flite '.60 size' P-51D Mustang ARF: Building & ... - 11/16/2012 3:19 PM   
acdii


 

Posts: 2293
Score: 155
Joined: 1/31/2011
Last Login: 5/20/2013
From: Capron, IL, USA
Status: offline 		I was just saying, thats all. Didn't mean to be critical, just noticed all the sanding you needed to do for the canopy, and saw the reason why. That is all.   

See, I'm the type of guy who would go the extra steps to take the dorsal off, and build the turtledeck  the way the real planes are, and if I want the dorsal, would put it back on in a more scale like manner.  But thats just how I would do it.  

 What you dont see in the pic I posted is how the cowl I installed looks like it got bent. I had added a 1/4" plywood firewall to push the engine out to meet the plans, and after I got the rest of the cowl built, discovered it was sitting too high, so mine isnt perfect either.  It's close, but it wont win any awards. 


_____________________________

http://www.facebook.com/pages/B-17e-Desert-Rat-Restoration-Project/218159428244374

Hide Signatures

(in reply to badazzgti03)
       Post #: 2150

Page:   <<   < prev  84 85 [86] 87 88 89 90 91 92 93   next >   >>  
All Forums >> RC Airplanes >> RC Warbirds and Warplanes >> RE: Top Flite '.60 size' P-51D Mustang ARF: Building & Modifications
Page: <<   < prev  84 85 [86] 87 88 89 90 91 92 93   next >   >>  




Jump to:


 
Google 



Search | Marketplace | Event Calendar | Local Clubs | Magazine | Product Ratings | New Products | Discussion Forums

Photo Gallery | Instructor Search | Field|Track|Marina Search

Advertisers | Hobby Vendor Resources | Rate Manufacturers | Sign In/Sign Up

SITE MAP!   : :   FORUM RULES

RC Universe is a service of Internet Brands, Inc. Copyright © 2001-2013.

Charities we support that also need your help
Yorkie Rescue | Humane Society | ASPCA | Crohn's-Colitis America


1.262RCU1