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Top RC Models MkIV full Composite Spitfire-a game changer

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Top RC Models MkIV full Composite Spitfire-a game changer

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Old 08-27-2018, 11:12 AM
  #676  
RBean
 
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Das44, can't help you much. Never got the cg with gear down. I can tell you there is not much trim change from gear up or down. Got a couple of flights in today. Total of 20 flights on the plane now. Here are some pictures from the field.
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Old 08-27-2018, 11:14 AM
  #677  
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Old 08-27-2018, 12:39 PM
  #678  
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Originally Posted by Dsa44 View Post
CG question..... Does anyone know what is reasonable CG with the gear extended? Manual and most here indicate around 130mm, but in general, I would infer that to be with gear retracted. The reason I ask, is that I will try to balance using small scales under each wheel with mathematical calculations so it would be nice to know what the CG should be with gear extended. Otherwise I would have to build a pillar for the front scales to position the plane with the gear retracted. I don't have access to a large-scale balancer, and my fingers are just not that accurate, especially since I am near 24lbs! (and the Vanessa rig is just too cumbersome and hard to hit a steady state)
Thx DSA
I made my first few flights with a 130 CG with the gear extended and it seemed tail heavy (took quite a bit of down elevator trim). I've added almost a pound of lead to the nose to hit 120 CG, but haven't flown it there yet, so I too an interested in what feedback you get.
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Old 10-20-2018, 02:18 PM
  #679  
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mikeps

See my post #633. 130mm for the cg is good. It flys with a good bit of down elevator trim. I believe that the incidence is off somewhere. I almost added some down thrust to the motor mount because it seemed to have a tad of up thrust built in the firewall. I settled for the way it flys as is. I didn't want to have to remount the cowling. Overall I'm pleased with the way it performs. Hope it wasn't too late to help.

KAV
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Old 10-20-2018, 05:42 PM
  #680  
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Had a good day at the field with the Spite today. Light wind more or less down the runway. Got in three good flights. Now a total of 23 flights on the plane. Still do take offs and landings on the grass next to the hard top runway. Have not flow in six weeks, so took the BH FW 190 to practice with first. Dsa44, you are going to like the way this plane flies.
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Old 11-22-2018, 09:47 AM
  #681  
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I am sure enjoying this thread. I bought one of these and a EME35 from Mike at Gator-RC a couple of years ago. Unfortunately life has gotten in the way of my building (moved to Tennessee, started from scratch...built a house, landscaping...blah...blah...blah).
After reading all the trials and tribulations, I should be able to assemble a perfect Spit with no balance or cooling issues.
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Old 11-22-2018, 11:12 AM
  #682  
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GIJon, welcome to the Spitfire thread. Get cg to 130mm and adequate cooling to cylinder and rear carb and you should be good. The EME 35 should work great. Seems like you have had a few minor distractions.
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Old 12-08-2018, 09:59 AM
  #683  
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Default Flap horns

New here and just organizing parts. Did anyone have concerns about the control horn attachment? Seems light.
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Old 02-10-2019, 05:28 PM
  #684  
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Where is everyone getting the scale looking exhausts in stead of the cheesy looking copper pipes that come with the Kit. Nice job on the pane, nice cars. thanks, Dave
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Old 02-10-2019, 08:18 PM
  #685  
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I made them with 45* copper water pipes from the hardware store. :-)
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Old 02-11-2019, 02:57 PM
  #686  
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There is a gent whose username is "Prekin" that sells the exhaust stacks. He's on RCU, RCG, Flying giants.. etc. Good looking stacks and many other accessories
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Old 02-11-2019, 05:07 PM
  #687  
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Originally Posted by ledgehunter View Post
There is a gent whose username is "Prekin" that sells the exhaust stacks. He's on RCU, RCG, Flying giants.. etc. Good looking stacks and many other accessories

Thanks, for the replies. I can't get a response from Prekin either through his web page or private messager.
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Old 02-12-2019, 09:08 PM
  #688  
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Originally Posted by marvair View Post
I made them with 45* copper water pipes from the hardware store. :-)

OK, going with the copper pipes. There are no suggested throws for the control surfaces in the instructions. Any suggestions from those who are flying now? Thanks
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Old 02-13-2019, 06:43 AM
  #689  
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Originally Posted by LtMash1A View Post
OK, going with the copper pipes. There are no suggested throws for the control surfaces in the instructions. Any suggestions from those who are flying now? Thanks
I used the ones from the Hanger 9 spit
HAN4495-Manual.pdf
They worked well for me.
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Old 02-13-2019, 11:35 AM
  #690  
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Originally Posted by MikePS View Post
I used the ones from the Hanger 9 spit
Attachment 2263426
They worked well for me.

Thanks for that. BTW, I did hear From Jiri. The pipes are still available.
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