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Reaction 54 Jet Kit

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Reaction 54 Jet Kit

Old 02-13-2015, 05:59 PM
  #3301  
joeflyer
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It's time for another photo. Except for a few minor details I'm basically done building. The Falcon 120 canopy that I was going to use didn't work out. It was just a bit too big to fit on the hatch properly. Fortunately my buddy, Jim, gave me a spare canopy that he had laying around. It's a different look than I initially envisioned but it'll work out fine. I started sanding and shaping of the fuse. I need to permanently mount the canopy and do a lot more sanding..

Joe
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Old 03-02-2015, 06:21 PM
  #3302  
joeflyer
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The fuse is covered. I still need to paint and permanently install the cockpit & canopy. After a few other minor details I can move on to sanding and covering the wings.
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Old 03-03-2015, 07:12 AM
  #3303  
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Lookin good, won't be long now.
Old 03-21-2015, 09:16 AM
  #3304  
joeflyer
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The fuse is essentially done and everything installed.. I just have to tighten a few things down and clean up the wiring a bit. After taking a break for a few days I'll start sanding and covering the wings.

Joe
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Old 03-21-2015, 09:24 AM
  #3305  
DMehalko
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Looking good!! I am so tempted to build one of these for my 1st turbine. Keep getting torn between the jetmach supersport and the reaction 54, cant make up my mind
Old 03-21-2015, 11:25 AM
  #3306  
lhatton
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Looks good! Looks like you might get yours in the air before I get mine up. Wing's in primer ready for paint and the fuse is needing primer. Pictures only upon completion.

Les
Old 03-23-2015, 08:01 AM
  #3307  
joeflyer
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You'll probably get yours up before me. Our field is usually wet and the ground soft until around June 1st, so we don't bring out our good stuff until then.
Make sure you post pictures and a flight report.

Joe
Old 03-31-2015, 12:18 PM
  #3308  
Johnny9390
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Need a builder to build my Reaction 54 kit anyone Interested in taking this process on for me. Pm me for a quote . Thanks
Old 04-11-2015, 12:49 PM
  #3309  
Ken Park
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Hi JoeFlyer

Iam just started all the contour sanding of the fuse but would like to do the intake mod you did - Looks great! - Did you make part templates? Would really appreciate if yourself or others who have done this could post them

Cheers
Ken
Old 04-11-2015, 02:04 PM
  #3310  
joeflyer
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Hi Ken,

Sorry I didn't make any templates. I just put wax paper over the wings, attached them to the fuse and built the inlets to fit. I used the attached sketch plus some other pictures in this thread as inspiration. I came out 2 inches from the fuse and made sure that they were a minimum of two inches tall over the wing. I did not angle up until the back of the wing in order to hide more of the engine.

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Old 04-25-2015, 06:07 AM
  #3311  
joeflyer
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After taking a few weeks off I've now finished the wings. Still have a bunch of details to take care of before the maiden.

Joe
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Old 04-25-2015, 08:47 AM
  #3312  
Gene Margiotti
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Joe,

Nice job on your wing!! Looking forward to more info on your final finish and a report of your maiden.

Gene
Old 04-25-2015, 10:50 AM
  #3313  
joeflyer
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To those who've been flying a Reaction 54:

Where is the best CG? BT's plans show about 6 - 7" aft of the wing LE at the fuse. However, I noticed that PST shows 5 3/4 - 6 1/8" for their Reaction. I'm an experienced jet flier so I don't think I need to have it too far forward, plus I don't want to add any more nose weight than necessary.

Joe
Old 04-25-2015, 01:38 PM
  #3314  
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Originally Posted by joeflyer
To those who've been flying a Reaction 54:

Where is the best CG? BT's plans show about 6 - 7" aft of the wing LE at the fuse. However, I noticed that PST shows 5 3/4 - 6 1/8" for their Reaction. I'm an experienced jet flier so I don't think I need to have it too far forward, plus I don't want to add any more nose weight than necessary.

Joe
Mine was perfect with the CG from the plans.
Old 04-25-2015, 05:53 PM
  #3315  
joeflyer
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Originally Posted by causeitflies
Mine was perfect with the CG from the plans.
Where did you have it set; 6 ", 7", or somewhere in between?
Old 04-26-2015, 06:58 AM
  #3316  
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Joe, I strongly recommend balancing in the forward half (6" to 6.5") of the balance range for first flights. The R54 is okay back to 7", and in normal flight I don't think you would feel much of a difference. But I have sensed a bit of twitchiness/sensitivity on landing approaches with the CG at the aft end of the balance range. The approach feels much more solid with a forward CG. Add the weight and don't worry about it. Make it removable so you can experiment later by pulling some weight out if you wish.
Old 04-26-2015, 08:03 AM
  #3317  
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Originally Posted by joeflyer
Where did you have it set; 6 ", 7", or somewhere in between?
I had to dig mine out of storage and couldn't find my CG mark. I'm pretty sure it was in the middle of the range.
Old 04-27-2015, 11:15 AM
  #3318  
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Thanks, Bruce and Mark. I've balanced it to about 6.25" for the first flights, and will adjust from there as Bruce suggests. It took two oversized batteries plus 8 oz. of lead in the nose, so I'm hoping that I can eliminate some of the lead. I need to build a Start tube and make a few more adjustments, then wait for some decent weather for the maiden.

Joe
Old 04-27-2015, 11:31 AM
  #3319  
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I tried my CG back to the recommended 7" and like Bruce said, felt very little difference in the air. After much moving it back and forth I settled on 6.25".
An extra pound of weight it not even noticeable on this big wing. I keep adding stuff and am up well over 20LBS dry (my scale tops out at 20lbs).
Old 04-28-2015, 06:39 PM
  #3320  
joeflyer
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It's finally done. I started it up and taxied around the driveway this afternoon. Everything worked fine, including the smoke system. I need to dial it down a bit, it really puts out a lot of smoke. Just need to double check the throws & CG and wait for the right day to maiden it.

Bruce should like the markings.

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Old 04-28-2015, 10:32 PM
  #3321  
BruceTharpe
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Originally Posted by joeflyer
Bruce should like the markings.

Yeah, I do! Really looks great, Joe. Best wishes for the maiden...
Old 04-29-2015, 06:33 AM
  #3322  
Terry Holston
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Lookin' good Joe, Can't wait to see her fly........
Old 04-29-2015, 08:01 AM
  #3323  
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Very nice Reaction!
Old 05-11-2015, 12:01 PM
  #3324  
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Default Ducting mod balsa thickness?

I'm about 2 months into the build and I'm making good progress here in NZ.

I'm planning on doing the ducting mod but I have one question first before I go out and buy the extra balsa.What thickness balsa have people used for the sides and top/bottom of the ducting? I like what mach1 has done back in post #566 so this is what I want to replicate (http://www.rcuniverse.com/forum/rc-j...ml#post3337097) . From the pictures it looks like he has used 1/8" sheeting (3.2mm) and maybe used something thicker to cap the inlet? Can anyone help me out here or give me some guidance on what I should use? Thanks


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Old 05-11-2015, 12:59 PM
  #3325  
joeflyer
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Trent,

See my post #3292. I did mine similar to mach1. I laid 1/8" balsa over the top of the wings. The sides of the inlets are 1/8" lite ply covered with 3/32" balsa, and the tops are 1/8" balsa. I reinforced the inside corners with triangle stock balsa. I felt that it was mandatory to make the sides out of lite ply since the weight of the fuse rests on the bottom rear of the inlets when the wings are off. See some of my other pictures. I sheeted the sides with 3/32" balsa mainly to have some material to sand and shape, and because Monokote doesn't look that great applied directly onto plywood. If I were doing it over I would do the top of the inlets the same as the sides. After sanding and rounding the corners the balsa is a bit thin in a few areas, consequently I have to be careful when I pick up and handle the fuse.

Watch the cross sectional area of the inlets particularly over mid-wing. My Merlin 90 instructions recommend a minimum inlet cross section of 6 sq. inches. so I made the minimum cross section 2" X 2" on each side. The engine seems to be getting plenty of air but I think the inlets would look better if they were a little taller.

The Reaction really looks a lot better with inlets. Good luck with yours.

Joe

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