3DHS Fanatics! - Page 238 - RC Groups
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Apr 29, 2012, 08:26 AM
The Twisted Elf
lugnutz's Avatar
Quote:
Originally Posted by marksextra
even 15 minute expoxy is fine. It all depends on how much time you need to work with it.
sorry but 15 minute and less isn't really all that good,the longer the drying time the harder the epoxy gets and the more the balsa or wood soaks it in for a super good bond,

i have seen many planes control surfaces come apart because of using 15 minute or less expoxy,just my opinion and observation
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Apr 29, 2012, 10:22 AM
Registered User
Ohio AV8TOR's Avatar
Quote:
Originally Posted by SteveTtoooo
The honey colored Gorilla glue is fine....Personally, I prefer epoxy....but that is just my "old school" way of doing things...
I have many "old school" ways of doing things but let me share why I stopped using epoxy and started using PU.

I used 30 minute epoxy on my 71" Slick and somewhere around 10-15 flights I did a low pass infront of me and did a quick pop up into a hover. I heard a snap/pop that did not sound right so I landed. I found the the left elevator side had poped some hinged loose. Upon examination and measurement I found that the trailing edge wood stock barely gets one of the locking notches of the hinge glued in it. In fact the hinge is mostly glued in the tapered part of the hinge. When I scratch built planes I had sufficient wood glued backing up the TE stock. Just look through the wing and you will see this. The PU glue expandes like crazy so when using it you get a mushroom or almost a rivit head of glued on the inside preventing it from pulling out. I may have my old ways but after that it is only PU for me.
Apr 29, 2012, 10:35 AM
Hooked on 3DHS
lammbn's Avatar
Quote:
Originally Posted by Ohio AV8TOR
I have many "old school" ways of doing things but let me share why I stopped using epoxy and started using PU.

I used 30 minute epoxy on my 71" Slick and somewhere around 10-15 flights I did a low pass infront of me and did a quick pop up into a hover. I heard a snap/pop that did not sound right so I landed. I found the the left elevator side had poped some hinged loose. Upon examination and measurement I found that the trailing edge wood stock barely gets one of the locking notches of the hinge glued in it. In fact the hinge is mostly glued in the tapered part of the hinge. When I scratch built planes I had sufficient wood glued backing up the TE stock. Just look through the wing and you will see this. The PU glue expandes like crazy so when using it you get a mushroom or almost a rivit head of glued on the inside preventing it from pulling out. I may have my old ways but after that it is only PU for me.
+1 I have noticed this exact same thing and that is why i continue to use Gorilla glue. make sure you get a lot in there and let it expand into the surface. don't worry about wiping it while it expands. come back a few hours later and just pop the excess glue off with a hobby knife. just be sure to grease the pivot point.
Apr 29, 2012, 11:08 AM
Sippin the Koolaid!
losifanatic's Avatar
+2 I like the GG method
Apr 29, 2012, 12:59 PM
Balsa to the Wall
Chuck's Avatar
Quote:
Originally Posted by SteveTtoooo
The honey colored Gorilla glue is fine....Personally, I prefer epoxy....but that is just my "old school" way of doing things...

I used to buy Hobby Poxy that had a one hour work time....unfortunately , Hobby Poxy went out of business, and I can find any other in the U.S. You guys in the U.K. have this, one hour work time epoxy...that I found at a few different shops in the U.K.....

SteveT

West Systems has slow curing Epoxy. It's used mostly in marine applications and is pricey, but it's about the best Epoxy you can buy. I have some I have had for years and still use it for certain jobs. Up to 1-1/2 hour pot life.
Here's a link:
http://www.westsystem.com/ss/hardener-selection-guide/


Chuck
Apr 29, 2012, 02:16 PM
Team 3DHS / Team JR
Bivens's Avatar
SEFF was fun in the new trailer...

Congrats Wamsy! Nice job.
See everyone in 2 weeks at Nall!!
Apr 29, 2012, 02:32 PM
Ready, Post, Aim
wedgewing's Avatar
nice trailer Bivens... you will have classy sleeping quarters for OH Huckfest
Apr 29, 2012, 02:36 PM
Time to Fly AJ's Best!
heritageflyer's Avatar
Quote:
Originally Posted by Bivens
SEFF was fun in the new trailer...

Congrats Wamsy! Nice job.
See everyone in 2 weeks at Nall!!
Nice Wheels!
Apr 29, 2012, 03:09 PM
"Failure is not an option"
TOFAST4U2C's Avatar
Nice toy hauler Mike. Enjoy the Nall.
Apr 29, 2012, 03:15 PM
Registered User
twistedgrim's Avatar
Very Very nice Bivens. I would love a setup like that to be able to go to fly-ins.
Apr 29, 2012, 03:20 PM
I fly, therefore, I crash!!!
SteveT.'s Avatar
Quote:
Originally Posted by Chuck
West Systems has slow curing Epoxy. It's used mostly in marine applications and is pricey, but it's about the best Epoxy you can buy. I have some I have had for years and still use it for certain jobs. Up to 1-1/2 hour pot life.
Here's a link:
http://www.westsystem.com/ss/hardener-selection-guide/


Chuck
Thanks Chuck....

I was going to check with Devcon and see if they have any also...

SteveT
Latest blog entry: My hangar...
Apr 29, 2012, 03:37 PM
3D Wanna Be
sk8rob's Avatar
Quote:
Originally Posted by Bivens
SEFF was fun in the new trailer...

Congrats Wamsy! Nice job.
See everyone in 2 weeks at Nall!!
Dang...didn't realize it was only two weeks away. Looks like I have a place to sleep if a hurricane comes
Apr 29, 2012, 05:42 PM
Fly low or fly home.
skarface's Avatar
Ok 42" slick 65mg servo rudder pull/pull: now i have it set at 125% throw both ways but they dont have the same amount of throw each way, so do i adjust the buy make like 120% throw to the left and maybe 110% throw to the right? Or do i keep th throw amout the same and adjust it by sub trim????
Apr 29, 2012, 07:04 PM
Team Aztech Aeromodels!
zmonster97's Avatar
Quote:
Originally Posted by skarface
Ok 42" slick 65mg servo rudder pull/pull: now i have it set at 125% throw both ways but they dont have the same amount of throw each way, so do i adjust the buy make like 120% throw to the left and maybe 110% throw to the right? Or do i keep th throw amout the same and adjust it by sub trim????
Travel adjust.
Apr 29, 2012, 08:35 PM
Once u go yak u never go back
marksextra's Avatar
Quote:
Originally Posted by lugnutz
sorry but 15 minute and less isn't really all that good,the longer the drying time the harder the epoxy gets and the more the balsa or wood soaks it in for a super good bond,

i have seen many planes control surfaces come apart because of using 15 minute or less expoxy,just my opinion and observation
I've not seen one failure using it. Maybe it's how i do it. Either way; you're right. Opinions can vary.


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