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ESM FW D-9

Old 09-07-2016, 02:51 AM
  #3026  
zrooster
 
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Originally Posted by Dowmer View Post
Zrooster, thanks. Once you are comfortable you can always remove weight and dial the CG back. Stick mode probably has the most flight time on this plane with over 200 flights.
Oh yeah! Didn't put it together until you mentioned it, but I think I watched some of his videos. Already downloaded the manual and found the figure. It's 155mm, so 145 would be a good conservative number for the maiden. With any luck, I should be able to fly her by the end of Oct...Nov at the latest.
Old 09-07-2016, 04:56 AM
  #3027  
STICK MODE
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Hay matey great to hear from you my question was just a general nosy one as a friend is about to start a build and he asked me how much mine weighed so i stuck her on the scales and got a bit of a shock at 26lbs but she flys lovely ps saw your video on the lose pull pull bloody lucky. nice save glad she was not bent up keep safe, smile a lot. ( makes the buggers wonder what you've been up to )
Frank
Old 09-07-2016, 05:03 AM
  #3028  
STICK MODE
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Originally Posted by zrooster View Post
Oh yeah! Didn't put it together until you mentioned it, but I think I watched some of his videos. Already downloaded the manual and found the figure. It's 155mm, so 145 would be a good conservative number for the maiden. With any luck, I should be able to fly her by the end of Oct...Nov at the latest.
yep 155 by the manual but 145 is the sweet spot
Old 09-07-2016, 07:24 AM
  #3029  
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Mine sits at 148mm and floats forever. A little more nose weight would probably help her stick to the runway better too.
Old 09-07-2016, 11:38 AM
  #3030  
panioul
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How did you balance your plane? Upside down or normally? Also did you balance the plane with the gears up or down? I have flown mine several times but after a major repair I want to be sure....
Old 09-07-2016, 12:34 PM
  #3031  
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Good luck zrooster, btw, I used to live in Gulfbreeze just down the road many years ago.
Old 09-07-2016, 01:42 PM
  #3032  
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Originally Posted by panioul View Post
How did you balance your plane? Upside down or normally? Also did you balance the plane with the gears up or down? I have flown mine several times but after a major repair I want to be sure....
Upside down set retracts up to work you will find the COG will change when the retracts are down or extended set the COG with retracts in a up position( locked) as this will be your COG when normally flying mine has quite heavy scale wheels on it and the COG changes to quite a forward COG when extended
Old 09-07-2016, 01:58 PM
  #3033  
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Stickmode is right. You have to balance with the gear up. Due to the forward "rake" of the gear, there is a larger shift of CG to the rear than most planes when they go up. If you measure with gear down, then with the gear coming up after takeoff, the CG shifts rear and you suddenly have a tail heavy plane on climb out. I almost lost a plane like that. Scared the $#** out of me.

Measure CG with the gear up and when the gear comes down for landing it shifts the CG forward and you will be a little nose heavy which is much better.

As far as balance upside down or right side up, it depends on how you measure your CG. On a big plane like this I use a Vanessa rig or I will calculate with weight on wheels like a real plane. I balance right side up. Some people use a large/giant scale balancer and can do both ways. If you use the old fingers or something narrow, then it would probably balance better upside down. It just makes it more stable as it typically lowers the center of gravity below the balance point.
Old 09-07-2016, 07:32 PM
  #3034  
70 ragtop
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Nothing to do with the Dora, but since we're talking CG shift....
I balanced mine exactly where Dowmer said to, many pages back, and it flew great!
https://www.youtube.com/watch?v=_43bWt1SsqY
Old 09-07-2016, 09:40 PM
  #3035  
STICK MODE
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Originally Posted by 70 ragtop View Post
Nothing to do with the Dora, but since we're talking CG shift....
I balanced mine exactly where Dowmer said to, many pages back, and it flew great!
https://www.youtube.com/watch?v=_43bWt1SsqY
Exactly a picture says a thousand words
Old 09-08-2016, 12:48 AM
  #3036  
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Originally Posted by Dowmer View Post
Good luck zrooster, btw, I used to live in Gulfbreeze just down the road many years ago.
Thanks! You should know where the Maiden will happen, then...Santa Rosa NOLF just off 87. We used to fly at Holly (literally right across the street from me), but the Navy won't let us on there anymore.

Were you the one I talked to before that's former Navy?
Old 09-08-2016, 12:49 AM
  #3037  
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Originally Posted by Katniss View Post
Mine sits at 148mm and floats forever. A little more nose weight would probably help her stick to the runway better too.
Thanks! Will definitely err towards nose heavy!
Old 09-08-2016, 01:17 AM
  #3038  
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ZRooster,
not sure I'm the same guy but I'm still in the Navy. I went through flight training there 20 years ago.
Its a great place down there, at least until a hurricane arrives ..lol
Old 09-08-2016, 01:19 AM
  #3039  
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Ragtop, that's exactly it! Great job on that P38.
Old 09-08-2016, 05:34 AM
  #3040  
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Originally Posted by Dowmer View Post
ZRooster,
not sure I'm the same guy but I'm still in the Navy. I went through flight training there 20 years ago.
Its a great place down there, at least until a hurricane arrives ..lol
Roger, I think you are. I flew in the AF and retired out of Hurlburt about 2 years ago. Fly safe...small planes and big planes!
Old 09-10-2016, 03:13 PM
  #3041  
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Originally Posted by Katniss View Post
... My 109G is also outfitted with a rimfire 65cc.
Are you running with 12S Lipos? Where did you place them?

On my ESM Bearcat I had to place my 10S Lipos in front of the firewall for it to balance right.

Last edited by oliveDrab; 09-11-2016 at 05:58 AM.
Old 09-11-2016, 06:05 AM
  #3042  
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Originally Posted by oliveDrab View Post
Are you running with 12S Lipos? Where did you place them?

On my ESM Bearcat I had to place my 10S Lipos in front of the firewall for it to balance right.
Yes, 12s lipo. There are 2x 6s 6000 in series. I have them placed under the gun hood(made into a hatch).
The receiver battery is right up behind the motor. I don't recall having much trouble getting the cg, however, I don't remember how much weight I might have put up front
Old 09-11-2016, 06:21 AM
  #3043  
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Originally Posted by Katniss View Post
Yes, 12s lipo. There are 2x 6s 6000 in series.
What brand Lipo batteries and what 'c' rating? 6s 6000mah ... probably high dollar. Oh well. I bought a couple Powerwing 5S 6000 maH 60C. Well worth the extra $$.
Old 09-11-2016, 11:50 AM
  #3044  
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Olive drab......I have a couple different sets. The first are 6s 6000 25c turnigy nanotech. I have 4 of these so 2 sets.
I also have 4 of the 6s 45-90c 5000 turnigy nanotech.
The added C rating obviously helps with keeping the packs from overheating. Flight time suffers a bit, but not horribly.

Part of the reason I situated the batteries under the gun hood was so I could use better, higher C and or capacity packs as they became available. With the bats that close to the g point, it doesn't effect the balance a whole lot.
Old 09-17-2016, 03:48 PM
  #3045  
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in memory of battle of Briton day
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Last edited by STICK MODE; 09-17-2016 at 03:52 PM.
Old 09-17-2016, 05:21 PM
  #3046  
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Originally Posted by STICK MODE View Post


in memory of battle of Briton day
Crap! Didn't know it was BoB day. I Should have flown this!
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Old 09-17-2016, 06:58 PM
  #3047  
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Originally Posted by zrooster View Post
Crap! Didn't know it was BoB day. I Should have flown this!
test flew my friends ESM spitfire a few weeks ago flew like on rails but my mate looked a bit worried after i had finished throwing it around the sky on the second flight out come === its a keeper, temped to build one my self
Old 09-17-2016, 10:57 PM
  #3048  
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Hi hi
Im flying This lovely model with the Saito Fg 60... But have some heating issues, my 2 cylinder has some problems with the intake valve!!
Somebody have the same problem?????
regards Dan
Old 09-18-2016, 01:38 AM
  #3049  
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Originally Posted by STICK MODE View Post
test flew my friends ESM spitfire a few weeks ago flew like on rails but my mate looked a bit worried after i had finished throwing it around the sky on the second flight out come === its a keeper, temped to build one my self
Mine is the Top RC Spitty, but also a great flier!
Old 09-18-2016, 05:16 AM
  #3050  
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I have the top flite spitty

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