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Old Jul 03, 2012, 05:06 PM
Tally Ho Chaps!
Chompwat's Avatar
United Kingdom, England, Ipswich
Joined Mar 2012
452 Posts
Fortunately it is a very clean break, and the parts seem to fit back together well. My hobby shop recommended 'UHU por' which is a transparent contact glue especially for expanded polystyrene. I've not tried it yet so I'll post once the repair is complete. I was going to reinforce the repair with packing tape.
This is clearly a weak point so I may glue some CF strip externally either side of the pushrod exits.
I haven't used Gorilla Glue either. I've heard that it grows in the joint. Is that right?
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Old Jul 03, 2012, 06:49 PM
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United States, VA, Arlington
Joined Jan 2011
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Quote:
Originally Posted by Endlesslag View Post
Guerilla glue....Is that the kind that runs through and gets on everything then disappears?
Quote:
Originally Posted by Chompwat View Post
... I haven't used Gorilla Glue either. I've heard that it grows in the joint. Is that right?
The Gorilla Glue I used was thick and sticky like syrup. It expands and bubbles quite a bit (2x-3x according to the page) and cures by moisture, so the instructions say to dampen one surface (probably more important when I was in NM than here in VA). Some folks moved to the white version, but I haven't ran out of the old stuff yet.

v/r,
C-F
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Old Jul 03, 2012, 11:59 PM
Go Ducks
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United States, OR, Milwaukie
Joined Feb 2012
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I like the white gorilla glue for these types of repairs. It expands into all the nooks and crannies creating a nice strong bond. The original gorilla glue works well too, but the white gorilla glue dries faster. With that being said, I've never used the UHU por, so it's hard for me to compare the two. I hear that the UHU por works very well though.
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Old Jul 04, 2012, 01:59 AM
Me a long time ago
Flypoppa's Avatar
London N.E. UK
Joined Jan 2007
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UHU POR is what I use for most of my repairs. I have even used it for complete foam model builds.
When the tail of my Cub broke off, I used it with a couple of cocktail sticks for extra re-enforcement .
You can use UHU POR as a contact glue, Allowing it to dry for a few minutes. Or an instance glue by putting the two surfaces together. This does take a little longer to dry.
I also have gorilla glue that I use at times for other type of fixes.
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Old Jul 04, 2012, 05:53 PM
Tally Ho Chaps!
Chompwat's Avatar
United Kingdom, England, Ipswich
Joined Mar 2012
452 Posts
In hindsight I think I should have let it dry and used it as a contact glue. I joined the two halves while the adhesive was still wet and after four hours is not fully set. However the repair is virtually invisible and everything is still in line. I will probably still reinforce the join, certainly at least with packing tape when I can find it.
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Old Jul 05, 2012, 02:58 AM
Me a long time ago
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London N.E. UK
Joined Jan 2007
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Originally Posted by Chompwat View Post
In hindsight I think I should have let it dry and used it as a contact glue. I joined the two halves while the adhesive was still wet and after four hours is not fully set. However the repair is virtually invisible and everything is still in line. I will probably still reinforce the join, certainly at least with packing tape when I can find it.
Four hours? You must have used a lot of glue.
If it is not set, pull it apart and then let it dry and do it as a contact glue.
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Old Jul 05, 2012, 03:02 AM
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Joined Jul 2012
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I have have the brushed motor super cub with nicad batteries and wondered if its prop shaft transmission supposed to be nosey when u spin the prop ?

The noise seems to come from the plastic gears, my other models are fitted with brushless motors and when i spin the prop on them they are silent.
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Old Jul 05, 2012, 07:00 AM
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Originally Posted by Lord_Of_Fear View Post
I have have the brushed motor super cub with nicad batteries and wondered if its prop shaft transmission supposed to be nosey when u spin the prop ?

The noise seems to come from the plastic gears, my other models are fitted with brushless motors and when i spin the prop on them they are silent.
The SC gear box is quite noisy when you are used to brushless, non geared, setups. But, it's normal to the extent that it hasn't been damaged in a crash; or worn out from use.

If the plane has been crashed it might be even louder than normal due to bent, or misaligned gears, and/or shaft, or a cracked gear case. An out of balance prop adds to the noise as well.

If in doubt; you might want to do an inspection and have a replacement gearbox on hand.
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Old Jul 05, 2012, 07:14 AM
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Ok thanks for the info , i will take the cowling off and have a look. it has taken 1 nose dive into the ground although i cant remember is it was less noisy before that happened or not.

cheers
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Old Jul 05, 2012, 11:02 AM
Me a long time ago
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London N.E. UK
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I had the test flight of my Super-cub with flaps and ailerons. Flies like a 'Funcub'.

Parkzone Super-Cub with Flaps & Ailerons. The test flight. (5 min 31 sec)
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Old Jul 05, 2012, 02:03 PM
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Originally Posted by Lord_Of_Fear View Post
Ok thanks for the info , i will take the cowling off and have a look. it has taken 1 nose dive into the ground although i cant remember is it was less noisy before that happened or not.

cheers
Look very closely at the box. Cracks often happen in places where surfaces join and they are difficult to see sometimes. I suggest you take the gear box off of the firewall, remove the motor and twist the box. You'll see any cracks then.

Also, check to see if the large gear is running true on the shaft. If it isn't; the motor pinion will not mesh properly and there can be quite a racket from that.

The bottom line on these gearboxes, IMO, is that they were designed with low cost and functionality in mind and not efficiency. Which is OK; they do the job.
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Old Jul 05, 2012, 02:07 PM
Tally Ho Chaps!
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United Kingdom, England, Ipswich
Joined Mar 2012
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Mine has been noisy from new in comparison to a brushless motor. I've carried out all the checks suggested by 19000rpm and everything is running true.
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Old Jul 05, 2012, 02:17 PM
Planes in flames,,,
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Yeah- any geared motor is going to sound noisy compared to a brushless
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Old Jul 05, 2012, 02:29 PM
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A Barrier Island in New Jersey, USA
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Originally Posted by Flypoppa View Post
I had the test flight of my Super-cub with flaps and ailerons. Flies like a 'Funcub'.

https://vimeo.com/45251914
Good show, Flypoppa!

Aeronca
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Old Jul 05, 2012, 09:10 PM
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United States, CO, Denver
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Originally Posted by Chompwat View Post
Thanks guys. Sadly we pay almost the same in pounds as you guys pay in Dollars in the US. So the Champ comes in at almost 80. Still if it worked for mwoneal it may be worth the price.
My Supercub fus snapped just in front of the tailplane on it's last outing and it spends a couple of hours on the bench for every few minutes in the air.
I'd say do it if you really want to learn on your own. The Champ flies slow, and if you lose control, as long as you are high enough just kill the throttle let go of the stick, and it will self right every time. Once you feel comfortable with the champ, take a run at the SC again. It will seem much more like you can control it and know what to do.
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