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HomeScaleAircraftHelicopterScale Model RC Helicopters › How to extend a fuselage tail?
03-13-2015 03:27 AM  3 years agoPost 1
Calil

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Brazil

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Hello guys

I'm adapting a T-rex 700 Nitro on a funkey 700 size Jet Ranger 206. Thing is that this fuse is smaller then the RC aerodyne fuse (mine is 145 mm) so the tail is too short.

So my doubt is how to cut off the tail and to fiber it to make it longer? I have no idea how to extend a tail and make it right, strong and perfect in finish.

Remembering that It's not possible to instal the mechanics foward because of the swash plase housing.

And second question: where to cut? I marked with red lines where I think it would be possible.

Thanks for any help!

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03-13-2015 04:26 AM  3 years agoPost 2
antja

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Levin new zealand

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how much do you want to extend it

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03-13-2015 04:37 AM  3 years agoPost 3
Calil

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Brazil

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about 2 inches

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03-13-2015 04:40 AM  3 years agoPost 4
flyawayed

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I would cut and build up at the start of the boom! I wouldn't cut in either of those two cut lines it will be easier at the beginning of the boom

edward lopez sanchez

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03-13-2015 04:56 AM  3 years agoPost 5
antja

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Levin new zealand

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you need to cut on the red line closest to the fuselage to give you enough tail boom on each side of the cut to get a decent size fixing for a brace across the joint.

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03-13-2015 11:26 AM  3 years agoPost 6
chopper37

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Why not shorten (cut) TT and boom to fit much easier I think, then get shorter blades

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03-13-2015 12:31 PM  3 years agoPost 7
Notar

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Taxachussetts

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This is not for the faint of heart. If you dont know where to cut this, you certainly dont want to try it as you surely will ruin the fuselage. It would be better to get mechanics which will fit the fuse, rather than what you have.
joe

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03-13-2015 02:24 PM  3 years agoPost 8
don s

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Chesapeake, VA

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Why not shorten (cut) TT and boom to fit much easier I think
I agree with this. I did cut a fuselage once to change the angle of the tail boom, and it was easy enough. I didn't add any extensions though...

E820, Raptor G4N, X50F/E, E620, Forza 450, and some planks.

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03-13-2015 02:45 PM  3 years agoPost 9
Calil

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Brazil

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By shortening the TT wouldn't my 710 blades become a problem?

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03-13-2015 02:58 PM  3 years agoPost 10
chopper37

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They could be a issue, might need to get shorter blades like 690's wich is about 1"

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03-13-2015 04:14 PM  3 years agoPost 11
Mojave

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Palos Verdes, Ca. USA

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Good advice^^^^^^ IMHO, either shorten your tail boom and TQ tube, or find a set of appropriate mechs. Scale machines are typically tail heavy to begin with requiring added ballast in the nose. So if you cut the tail section to extend it, you'll be adding extra weight, due to the additional fiberglass/resin and added length. Used mechs are fairly cheap in here, headaches like this get expensive...
Barry

All helis and planes have an expiration date stamped on them...you only find it after you crash!!

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03-13-2015 04:39 PM  3 years agoPost 12
R.J.

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SF bay area, CA USA

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An older .60 size helicopter used anywhere from 600-660mm blades so is actually closer to a TRex 600 size mechanic. It may be better to try to put an older TRex 600 mechanic and stretch the boom if needed rather than extend the fuselage. Or shorten the boom of the TRex 700 as has already been said. Besides, if you stretch the existing fuselage tailboom, it will be out of proportion and less "scale" looking. Most of the time if a scale fuselage is modified, it is done to make it more accurately represent the full size, not less. You may need to look for some older 660mm-680mm blades.

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03-13-2015 04:46 PM  3 years agoPost 13
rctrooper1

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Brownsville, Texas

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Trex 600 mechanics stretched to 700 will give you approximately 36 1/4 - 36 1/2 inches from main shaft center to tail shaft center. Measure the distance on the fuse and check to see if it's close to that measure. A stretched 600 is a little shorter than an original 700. If you do go that route you will have to cut the 700 boom but the torque tube and push rod will be fine. I can give you more details if you need them.

Jz

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03-13-2015 08:16 PM  3 years agoPost 14
rcheli808

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Mililani,Hi-USA

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Hi Calil,
I would also go with different mechanics or modifying existing mechanics. Lots of experience here on the forum to help...

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03-14-2015 07:11 PM  3 years agoPost 15
Double E

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Atlanta, GA

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Yep, far easier to adjust the length of the mechanics than cutting and extending the fiberglass fuselage.

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03-15-2015 02:48 AM  3 years agoPost 16
Calil

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Brazil

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You are all right, the worst choice is to chop off the tail. I'll think in another alternative! Thank you!

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03-15-2015 03:18 AM  3 years agoPost 17
antja

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Levin new zealand

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chopping the tail is the easiest and cheapest option

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03-15-2015 04:00 AM  3 years agoPost 18
Double E

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Atlanta, GA

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Antja must do fiberglass bodywork and paint for a living if he thinks cutting and extending a fuselage is easier than cutting a custom length tail boom and torque tube.

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03-15-2015 04:46 AM  3 years agoPost 19
antja

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Levin new zealand

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no I am just an old retired guy who messes around with helicopters.

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03-15-2015 05:11 AM  3 years agoPost 20
Calil

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Brazil

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OK guys another question:

it would be possible to invert the t-rex tail from right to left?

If so, could someone post a video, thread link on how to do this please?

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HomeScaleAircraftHelicopterScale Model RC Helicopters › How to extend a fuselage tail?
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