Hobby King Bixler 2 - Page 73 - RC Groups
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Oct 27, 2012, 07:34 PM
Registered User
scott page's Avatar
Quote:
Originally Posted by brunobl
Hi guys,

I searched for this but found nothing relevant.

I see a more or less common theme in forums & Youtube on whether or not to glue the Bixler wings or use some form of removable fitting (rubber band + hooks, etc). I tend to lean towards the removable option, but I don't like the huge void formed by the wing pass-through with only a few-cm thick foam above it. The whole airplane will essentially be hanging from that not-too-thick slab of foam, which becomes the second-weakest link after the spar is beefed up with inner dowels, etc. OTOH if the wing is glued, it would also firmly bonded to the bottom surface of the wing attachment area, making for a much stronger joint.

The problem is, I don't know if this is even an issue. Are my worries justified? Has anyone heard of this foam area above the wing in a Bixler letting go?
I've snapped many a spar and never had the foam above the wings give. If one was concerned about that it would make sense to put 3M Extreme packing tape in the opening - this would also tighten up the fit a bit.
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Oct 27, 2012, 08:59 PM
what goes up, must come down..
AussieHoppy's Avatar
i am curious... if i said i was contemplating installing an ARC-28-47-3 motor on 3S, would this be regarded as insanity?
i just rediscovered one in a dark corner, perhaps with 7x5 or 7x7?
Oct 27, 2012, 09:46 PM
happy when flying
Blue Flyer's Avatar
Quote:
Originally Posted by heinduplessis
Some fun this morning http://youtu.be/wI7T9LWAwes
What a beautiful location for FPV. I'm very envious
Oct 27, 2012, 10:25 PM
Registered User
Quote:
Originally Posted by CorporalB
After removing the stock plastic motor mount, the cnc mount was too loose in the mount area, about 1 or 2mm gap all around the mount. I decided against using epoxy and used Gorilla glue instead because it expands/foams out as it dries, thus filling the "empty" space around the mount ensuring a tight fit

Also, I've just ordered 2 x spare canopies for the B2 from hobbyking for just over 5 shipped to the UK, bargain I want an untouched one for LOS flying and one for the GoPro. I don't like hacking away at the rest of the plane, except perhaps to make a side hatch.



[for full build progress see http://bixler2fpv.blogspot.co.uk/]

Hey just wanted to give you my input as far as using gorilla glue. I dont know if you are using the same one I did see pictured below. I glued it in with water and everything seem solid and worked well for a few flights now. But today after my 3rd flight I noticed that my plane wasnt banking to well to the left so I took her down and notice that the glue had ripped out and was really close to an engine failure if the connectors had gotten undo. I will be cleaning it out and using epoxy from now on.

Happy Flying!
Oct 27, 2012, 10:32 PM
happy when flying
Blue Flyer's Avatar
Quote:
Originally Posted by ampdchaos
Hey just wanted to give you my input as far as using gorilla glue. I dont know if you are using the same one I did see pictured below. I glued it in with water and everything seem solid and worked well for a few flights now. But today after my 3rd flight I noticed that my plane wasnt banking to well to the left so I took her down and notice that the glue had ripped out and was really close to an engine failure if the connectors had gotten undo. I will be cleaning it out and using epoxy from now on.

Happy Flying!
Thanks for the heads up ampdchaos, ill be sure to check it after each flight. However, I'm not using the same GG, mine doesn't say "dries white" or "2x faster" its the plain old brown goop.

But I appreciate the prior warning, many thanks mate
Oct 27, 2012, 11:42 PM
Registered User
scott page's Avatar
Quote:
Originally Posted by ampdchaos
Hey just wanted to give you my input as far as using gorilla glue. I dont know if you are using the same one I did see pictured below. I glued it in with water and everything seem solid and worked well for a few flights now. But today after my 3rd flight I noticed that my plane wasnt banking to well to the left so I took her down and notice that the glue had ripped out and was really close to an engine failure if the connectors had gotten undo. I will be cleaning it out and using epoxy from now on.

Happy Flying!
Using water speeds up the cure, but you see the result -- better fill, not as strong.
Oct 28, 2012, 02:35 AM
Foam Snow
Quote:
Originally Posted by AndreDal
I have just tested the stock motor in a watt meter, and pulls only 11A with 100% throttle and 7x5 prop. My batt is a nano-tech 2200mAh 3S 35~70C.

Next step is mount my new motor (2628-6 2200kV) with a 7x4 prop and do some new tests.
Weird - I got 15.5A https://www.rcgroups.com/forums/show...&postcount=598
Oct 28, 2012, 02:37 AM
Foam Snow
Quote:
Originally Posted by ampdchaos
Hey just wanted to give you my input as far as using gorilla glue. I dont know if you are using the same one I did see pictured below. I glued it in with water and everything seem solid and worked well for a few flights now. But today after my 3rd flight I noticed that my plane wasnt banking to well to the left so I took her down and notice that the glue had ripped out and was really close to an engine failure if the connectors had gotten undo. I will be cleaning it out and using epoxy from now on.

Happy Flying!
Isn't anybody using CA? I've never had it come loose with foam on foam. Super light, easy to apply, bonds the foam.
Last edited by heinduplessis; Oct 28, 2012 at 03:08 AM.
Oct 28, 2012, 06:05 AM
happy when flying
Blue Flyer's Avatar
CA would be good I guess, but this isn't foam to foam, it's aluminium to foam. Either way, I'm sure most glues would be good in this situation but I needed to fill the empty space around the mount so that's the only reason I went for Gorilla Glue
Oct 28, 2012, 06:09 AM
Registered User
Drone 5's Avatar
Quote:
Originally Posted by AndreDal
I have just tested the stock motor in a watt meter, and pulls only 11A with 100% throttle and 7x5 prop. My batt is a nano-tech 2200mAh 3S 35~70C.

Next step is mount my new motor (2628-6 2200kV) with a 7x4 prop and do some new tests.
My stock motor only pulls just over 11 amps with a 7x5 APC prop. Turnigy 2200 3S battery. Changing the motor and the motor mount when they arrive.
Oct 28, 2012, 06:14 AM
Registered User
Drone 5's Avatar
Quote:
Originally Posted by CorporalB
CA would be good I guess, but this isn't foam to foam, it's aluminium to foam. Either way, I'm sure most glues would be good in this situation but I needed to fill the empty space around the mount so that's the only reason I went for Gorilla Glue
Did the Gorilla glue work OK. Did you put the glue on the aluminium mount and the water on the foam? Was going to use Epoxy when my mount arrives but may have to do as you have if there is a void.
Keep the build postings coming.
M.
Oct 28, 2012, 06:28 AM
Registered User
Drone 5's Avatar
Quote:
Originally Posted by CorporalB
After removing the stock plastic motor mount, the cnc mount was too loose in the mount area, about 1 or 2mm gap all around the mount. I decided against using epoxy and used Gorilla glue instead because it expands/foams out as it dries, thus filling the "empty" space around the mount ensuring a tight fit

Also, I've just ordered 2 x spare canopies for the B2 from hobbyking for just over 5 shipped to the UK, bargain I want an untouched one for LOS flying and one for the GoPro. I don't like hacking away at the rest of the plane, except perhaps to make a side hatch.



[for full build progress see http://bixler2fpv.blogspot.co.uk/]
Hi Corp. Could not get onto your blogspot with above link so used your previous one.
Oct 28, 2012, 06:39 AM
happy when flying
Blue Flyer's Avatar
Quote:
Originally Posted by Drone 5
Did the Gorilla glue work OK. Did you put the glue on the aluminium mount and the water on the foam? Was going to use Epoxy when my mount arrives but may have to do as you have if there is a void.
Keep the build postings coming.
M.
Yes, the gorilla glue has worked a treat. It's set over 2 nights now and it's rock hard. We'll have to wait and see how it holds up with any vibrations the motor/prop may produce but the TGS props I use are very well balanced and the motors are high quality so there should be minimal vibrations. I'll keep you all updated though

RCGroups doesn't have a signature option so I'll just paste my blog link each time I post now

http://bixler2fpv.blogspot.co.uk/
Oct 28, 2012, 06:57 AM
Registered User
Drone 5's Avatar
Quote:
Originally Posted by ampdchaos
Hey just wanted to give you my input as far as using gorilla glue. I dont know if you are using the same one I did see pictured below. I glued it in with water and everything seem solid and worked well for a few flights now. But today after my 3rd flight I noticed that my plane wasnt banking to well to the left so I took her down and notice that the glue had ripped out and was really close to an engine failure if the connectors had gotten undo. I will be cleaning it out and using epoxy from now on.

Happy Flying!
Thanks for the input, will be using Epoxy on mine if I can.
Oct 28, 2012, 07:20 AM
Registered User
Quote:
Originally Posted by heinduplessis
Quote:
Originally Posted by Drone 5
My stock motor only pulls just over 11 amps with a 7x5 APC prop. Turnigy 2200 3S battery. Changing the motor and the motor mount when they arrive.
I use nano-tech 2200mAh 3S 35~70C and a Red Brick 30A ESC.
I recorded an video showing my test, here: (sorry but I'm speaking in Portuguese, just skip to 01:50).

Consumo/Corrente do motor do Bixler 2 (1300kV) (2 min 45 sec)


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