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Old Sep 25, 2014, 06:25 PM
efflux RC's Avatar
United States, CA, Santa Clarita
Joined Aug 2009
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Originally Posted by STEVEAIR2 View Post
Hello again
I hope to start on this at the weekend.
I think I might go with a 6s setup. Rather than read through all the threads can someone tell me the mods they did on there 6S setup.
I see moving the ESC to the duct is a must. I also see carbon being put into the tail and the wings. Is this Rod Or tow?
Is there anything else I should do? I am still thinking of adding glasscloth so I would need to do the mods first.
Would you just glass the underside?
Thanks in advance
Steve.
My first 6s air frame had the carbon spars (1.5mm X 4.5mm Rectangular Bar -solid)
and was glassed on the bottom only. The next one had the spars only. The glass is not needed.
The photos are examples of the technique, but not this jet (didn't take any). Same idea though.

Sand the spar with 80-grit sandpaper
Score the foam with a hobby knife.
Drag a fine (24TPI) hacksaw blade to cut the groove
Angle the blade to make the groove wider, depending on your spar thickness.
Use a toothpick to insert 30 minute epoxy into the groove.
Be sure the spar is just below the surface, and the wings are squre. while it sets up.
Apply "ultra light weight" Spackle. thinned to the consistancy of heavy cream. into the slot to fill the slight depression.
Let dry overnight.
Sand.
Repeat Spackle fill and sand if necessary.
Glass or paint as desired.
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Last edited by efflux RC; Sep 26, 2014 at 11:42 PM. Reason: I can spell.......I just can't type!
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Old Sep 26, 2014, 02:40 AM
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Dublin Ireland
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Hi Gary
thanks for taking the time to post the photos, really appreciate it.
On the first few photos it looks like you put carbon down the side of the fuzz am I correct?
would I get away with carbon tow on the tail?
Could you tell me the best capacity for the cells?
Thanks Gary.

PS :What is SPACKLE on this side if the pond? is it just light weight filler?
While I am on the subject what is BONDO?
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Old Sep 26, 2014, 12:54 PM
efflux RC's Avatar
United States, CA, Santa Clarita
Joined Aug 2009
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Quote:
Originally Posted by STEVEAIR2 View Post
Hi Gary
thanks for taking the time to post the photos, really appreciate it.
On the first few photos it looks like you put carbon down the side of the fuzz am I correct?
would I get away with carbon tow on the tail?
Could you tell me the best capacity for the cells?
Thanks Gary.

PS :What is SPACKLE on this side if the pond? is it just light weight filler?
While I am on the subject what is BONDO?
The photos (as I mentioned above) are from another airframe (phase 2 F-16) I was simply showing the process of creating a slot for a carbon fiber rectangular bar to be used as a spar. Some of the photos show the taileron pylon, not a wing.
Here's my Habu2 with the added spar at the rear of the wing behind the servos (it really the only place to install one.

"Spackle" is a hole filler for drywall. You can find it in the paint section of home improvement and hardware stores. There is a version known as "ultra light weight". It feels like there's nothing in the tub! That's what you want to use.
"Bondo" is a dent filler for autos. Do not use Bondo (it's very heavy)
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Old Sep 26, 2014, 12:58 PM
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United States, MI, Redford Charter Township
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Originally Posted by efflux RC View Post
The Photos (as I mentioned above) are from another airframe (phase 2 F-16) I was simply showing the process of creating a slot for a carbon fiber rectanguler Bar to be used as a spar.
Here's my Habu2 with the added spar at the rear of the wing behind the servos (it really the only place to install one.

"Spackle" is a hole filler for drywall. You can find it in the Paint section of home improvement and hardware stores. there is a version known as "ultra light weight".
It feels like there's nothing in the tub! That's what you want to use.
"Bondo" is a dent filler for autos. Do not use Bondo (it's very heavy)
Efflux, I like the covers you have for the flap servo arms, where'd you get those? Thanks!
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Old Sep 26, 2014, 02:32 PM
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United States, CA, Santa Clarita
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Originally Posted by DarkDrako View Post
Efflux, I like the covers you have for the flap servo arms, where'd you get those? Thanks!
Thanks.
Those first ones were from Parkflyer plastics. http://parkflyerplastics.com/cart/
They have servo covers but some I make from the "lenses' and bubbles"

When you crash a jet, you end up with "spares". My new servo covers are the same as the stock aileron covers.

It flies on 5s only (60c, 3700's) so there's no need for air frame reinforcement. I just wanted to get it airborn again, quickly.
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Old Sep 26, 2014, 03:28 PM
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Ah, okay.

I'm sure its been discussed before, but I'll ask anyway, what did you do to get rid of the gaps between the fuse and the wings on the intakes?
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Old Sep 26, 2014, 03:41 PM
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Originally Posted by DarkDrako View Post
Ah, okay.

I'm sure its been discussed before, but I'll ask anyway, what did you do to get rid of the gaps between the fuse and the wings on the intakes?
Shiny Scotch tape in some areas, "Blenderm" tape on the ones with compound curves.


This is done on all the external joints. Makes the jet faster.
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Old Sep 26, 2014, 03:49 PM
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hmmm, tape eh. Interesting. Thank you sir!
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Old Sep 26, 2014, 06:39 PM
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The reason I use tape to seal the gaps is it's light, and it's removable if need be.

Also for areas that require some added support for the faster setups. (such as the vertical stab) I squeeze clear "RTV" silicone into the foam joint, after assy. This can also be easily removed with a Hobby knife. It's also used to stop the ill fitting, wing from rocking, on my 208mph Habu 32. (as well as all of our other Habu 32s)
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Old Sep 26, 2014, 09:35 PM
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Makes sense to me! Thank you, also for the silicone suggestion. Will be building the Habu 32x when it is released so I appreciate that advice as well.
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Old Sep 27, 2014, 11:56 AM
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Dublin Ireland
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Originally Posted by efflux RC View Post
Thanks.
Those first ones were from Parkflyer plastics. http://parkflyerplastics.com/cart/
They have servo covers but some I make from the "lenses' and bubbles"

When you crash a jet, you end up with "spares". My new servo covers are the same as the stock aileron covers.

It flies on 5s only (60c, 3700's) so there's no need for air frame reinforcement. I just wanted to get it airborn again, quickly.
thanks again Gary for your explanations.
The Habu I have came with a lander 10 blade fan and 2200 Kv Motor.
This seems heavy and doesn't seem to fit correctly.
Is this a 6S Motor?
I have removed the retracts also and the jet is so much lighter.
I might put in a Shubuler DS30 if you could recommend a 4 or 5S Motor.
Thanks
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Old Sep 27, 2014, 06:09 PM
efflux RC's Avatar
United States, CA, Santa Clarita
Joined Aug 2009
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Originally Posted by STEVEAIR2 View Post
thanks again Gary for your explanations.
The Habu I have came with a lander 10 blade fan and 2200 Kv Motor.
This seems heavy and doesn't seem to fit correctly.
Is this a 6S Motor?
I have removed the retracts also and the jet is so much lighter.
I might put in a Shubuler DS30 if you could recommend a 4 or 5S Motor.
Thanks
I haven't used any of the Lander or Fury fans. I've rebuilt a few though, They are Very heavy. Beware of the metal wire fairing. I've seen it cut many motor wires. Be sure there's about 3 layers of heat shrink tubing. Where the motor wires pass to the out side. there are also sharp edges where the fairing meets the motor cone. that area needs to insulated to.
I think the 2200kv motor is for 5s. But can't say for sure.
............

For the Schubie.... Is it an old "HDT" (3 blade) or the new DS-30-HDS ?
Here's some data from Schubie on the HDS.
The HET 2W-23 on 5s is 21n (2.14kg) @ 71 amps. (on the bench)
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Old Sep 28, 2014, 05:08 PM
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Thanks again Gary for the explanations.
The DS 30 is the older 3 Blade.
Cheers
Steve
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Old Sep 28, 2014, 06:22 PM
efflux RC's Avatar
United States, CA, Santa Clarita
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Originally Posted by STEVEAIR2 View Post
Thanks again Gary for the explanations.
The DS 30 is the older 3 Blade.
Cheers
Steve
The DS-30-HDT is a great fan for speed. (though the sound is very harsh)
I put one in a Phase 3 F-16 (5 years back) with a Nue 1112/1.5D (I think) and it did 152 mph (avg'd UW/DW, no diving) on 4s.

During one of the test flights it suffered a lockout with an early AR6000 rx .
The second jet built, tail # "FU", ended up being a bit faster.
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