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Old Feb 20, 2012, 07:58 PM
Row 0, Seat A
G550Ted's Avatar
Savannah, GA
Joined Jan 2008
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Quote:
Originally Posted by crazyj View Post
Nice job man, I see the extended horns in the cargo door - well done!
Thanx. I had read of all the door problems and spent a bit of time scratching my head over how to alleviate them.

A couple of other things make the ramp tough. I cut out the door at an angle (inside edge is smaller than outside edge) so it fits like a plug. Not shown in my pics is an added CF flat up the middle of the door. Together with the dual linkage to the door itself, the actuating link and servo arm geometry is such that when the ramp is up it is almost an over center orientation so loads on the ramp don't stress or tend to pull the servo towards the open position. All together it makes for no twist or bowing in the door in any position.

Ted
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Old Feb 22, 2012, 03:50 PM
Picture a worm wearing goggles
snipeworm's Avatar
United States, CA, Roseville
Joined Feb 2012
1,897 Posts
So do you guys think the stock set up on a 75% Twin is overpowered enough for heavier cargo? Looks like the blue wonders are priced right for my budget. I have also been reading a lot of people using Dollar tree foam board or Elmers and taking the paper off before building.... I have built one foamy and didn't remove the paper and it was quite rigid. Can you guys tell me the reason so many seem to be removing the paper, is it purely a weight issue?
Thanks again
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Old Feb 22, 2012, 07:03 PM
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birdofplay's Avatar
United States, IN, Indianapolis
Joined Dec 2005
8,609 Posts
With the prospect of slightly cheaper foam on the horizon
and with that foam being in a different form factor - namely 24x48 sheets.

I am considering a Celebratory roll out of an 80" The Twins version.

I would simply scale up the 57" version and arrange everything on the new size sheeting.
I'd adjust all the tabs and slots and probably include enough sheeting for
top and bottom wing coverage.

Larger will also mean biger box and higher shipping but "Good Things Come in BIG boxes" .

Just wondering if there would be any interest ?

Bob
Northwest Cutout Service
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Old Feb 22, 2012, 07:15 PM
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Joined Oct 2009
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Quote:
Originally Posted by birdofplay View Post
With the prospect of slightly cheaper foam on the horizon
and with that foam being in a different form factor - namely 24x48 sheets.

I am considering a Celebratory roll out of an 80" The Twins version.

I would simply scale up the 57" version and arrange everything on the new size sheeting.
I'd adjust all the tabs and slots and probably include enough sheeting for
top and bottom wing coverage.

Larger will also mean biger box and higher shipping but "Good Things Come in BIG boxes" .

Just wondering if there would be any interest ?

Bob
Northwest Cutout Service

I think Larry Ross has one in the works already???????
He is back too building and feeling better..
Give it a shot ,,that would be VERY INTERESTING??for sure,
Lenny
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Old Feb 22, 2012, 08:40 PM
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United States, IN, Indianapolis
Joined Dec 2005
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Well after the realization that my Osprey V22 design was NOT going to be viable
without a whole bunch of complicated stuff in the Nacells I decided to go back to
the old tried and true Twins and see what else I could do.

I also have a couple of 650 watt motors that need a home !

I think Larry is building his out of Fan fold where as I want to use the
New, made in the USA , foam that is as good or better than depron. ( which remains to be seen )

Shipping box cost and availability and shipping cost will be a determining factor
in whether anyone will be interested.

Its a back burner project until the foam becomes a reality.

Bob
Northwest Cutout Service
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Old Feb 22, 2012, 09:07 PM
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Quote:
Originally Posted by birdofplay View Post
Well after the realization that my Osprey V22 design was NOT going to be viable
without a whole bunch of complicated stuff in the Nacells I decided to go back to
the old tried and true Twins and see what else I could do.

I also have a couple of 650 watt motors that need a home !

I think Larry is building his out of Fan fold where as I want to use the
New, made in the USA , foam that is as good or better than depron. ( which remains to be seen )

Shipping box cost and availability and shipping cost will be a determining factor
in whether anyone will be interested.

Its a back burner project until the foam becomes a reality.

Bob
Northwest Cutout Service
Hey Bob,
Let us know how it works out with this NEW FOAM I'm gonna try dollar store stuff till I can find a better supply..
WAITING????
LOWE's went to a crumy Greenboard like the blue core but very brittle..YUCK..
Later,
Lenny
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Old Feb 22, 2012, 11:33 PM
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United States, IN, Indianapolis
Joined Dec 2005
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I lived thru 40 yrs of Balsa and even Depron is Cheap in comparison !

I really dont see why guys are so averse to Depron considering Balsa Prices.

When the New foam Comes On Line I'm IN for a large Pile of it.
I do hope it meets everyone's expectations or I'll be making peanuts out of it !

The guys putting the deal together know the Hobby and Foamys well
so I expect great things IF the MFGR doesnt screw with them.

I may put up a PDF of my Parts sets when I'm done.

L8r

Bob
Northwest Cutout Service
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Old Feb 23, 2012, 07:12 AM
Foam Av8r
RogueTitan's Avatar
In Teh Garage (Rossville, GA. USA)
Joined Sep 2008
3,351 Posts
they are called purist of the hobby
Kind of like if you don't read from a KJV Scofield version of the Holy Bible you are still going to hell mentality.

I personally hope that they keep the pliability like the foam board and maybe some more stiffness like depron if possible but not so much that it is so brittle that it is unworkable.

the Rediboard is good foam to work with otherwise there would not be so many of us using it.

There are methods to make the foam stiffer but nothing can be done if it is so brittle that it cant be rolled without breaking.

If I cant make rolled fuselages and bent leading edges on my wings then the new foam will be worthless to me.
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Old Feb 23, 2012, 08:36 AM
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Twins Coast Guard with easy wing removal??

I like the bolt down wing,,,,,,,, for the easy way to get it off??
Might just convert my other 2 twins..lol
Here's some crazy idea's that work pretty good for me...
Just waiting for ESC 's so I can mount the motors and wing floats ..
Then look out water here we come
See if you can find my BAD with the decals and lettering,,
Oh well it's still a blast to build...
Thanks for looking,
Later,
Lenny
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Old Feb 23, 2012, 10:09 AM
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United States, IN, Indianapolis
Joined Dec 2005
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With SO MANY quad copter places out there these days and So many available
PUSHER props or CR props I would deffinately use a CR set up on my Amphib
to keep the torque from driving my sposon into the water on one side.

Just sayin :-)

Bob
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Old Feb 23, 2012, 10:13 AM
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United States, IN, Indianapolis
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After fiddling around with the 80" version I decided that making the wing Cord slightly
narrower by ~ 1" will make much better use of 24x48 material and still allow
for top and bottom covering.

Another differnce from Larrys is TWO engines vs FOUR.
That should help keep weight and costs down.
I've ordered a bunch more silcone insulated wire from our HC pals.
And I already HAVE two 80 amp ESC's - Red Bricks.
The current 57 Bird has two 40 amp Red Bricks and seems to be working fine.

Gotta adjust the slots and tabs before releasing.

Bob
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Last edited by birdofplay; Feb 23, 2012 at 10:18 AM.
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Old Feb 23, 2012, 12:46 PM
Row 0, Seat A
G550Ted's Avatar
Savannah, GA
Joined Jan 2008
2,706 Posts
Quote:
Originally Posted by birdofplay View Post
After fiddling around with the 80" version I decided that making the wing Cord slightly
narrower by ~ 1" will make much better use of 24x48 material and still allow
for top and bottom covering.

Another differnce from Larrys is TWO engines vs FOUR.
That should help keep weight and costs down.
I've ordered a bunch more silcone insulated wire from our HC pals.
And I already HAVE two 80 amp ESC's - Red Bricks.
The current 57 Bird has two 40 amp Red Bricks and seems to be working fine.

Gotta adjust the slots and tabs before releasing.

Bob
Anxious to see the results Bob.

Ted
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Old Feb 23, 2012, 01:20 PM
Registered User
Joined Oct 2011
104 Posts
Quote:
Originally Posted by birdofplay View Post
With the prospect of slightly cheaper foam on the horizon
and with that foam being in a different form factor - namely 24x48 sheets.

I am considering a Celebratory roll out of an 80" The Twins version.

I would simply scale up the 57" version and arrange everything on the new size sheeting.
I'd adjust all the tabs and slots and probably include enough sheeting for
top and bottom wing coverage.

Larger will also mean biger box and higher shipping but "Good Things Come in BIG boxes" .

Just wondering if there would be any interest ?

Bob
Northwest Cutout Service
Wings would have to be the Focal Main strong point on a 80 " build .

When i built my 130% 74" ws build . ( even with a fully enclosed wing , there is a ton of wing flex . and they would have to be screwd down . my 130% cam out to a little under 2700 grams , its gona be a big build , and if your gona sell them , then that wing has to be strong , probaly used a full sheet of foam and make a full wing for a hot wire from a template . if i did it again thats what i would do .
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Old Feb 23, 2012, 01:25 PM
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Joined Oct 2011
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Quote:
Originally Posted by birdofplay View Post
After fiddling around with the 80" version I decided that making the wing Cord slightly
narrower by ~ 1" will make much better use of 24x48 material and still allow
for top and bottom covering.

Another differnce from Larrys is TWO engines vs FOUR.
That should help keep weight and costs down.
I've ordered a bunch more silcone insulated wire from our HC pals.
And I already HAVE two 80 amp ESC's - Red Bricks.
The current 57 Bird has two 40 amp Red Bricks and seems to be working fine.

Gotta adjust the slots and tabs before releasing.

Bob
on mine i have two red brick 50 amps and two dt-850's good for 380 watts each . it has a ton of power .
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Old Feb 23, 2012, 01:30 PM
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United States, IN, Indianapolis
Joined Dec 2005
8,609 Posts
My 57 sized TT has a screwed down wing mounting and a cf spar.

I'm thinking about putting a 12 mm CF tube in there as I have some here
that I used on a Quad Copter. fairly nice stiff stuff.
1M = ~ 39" so it wont quite get to the tip but close !
I'll have to think about a connection and two piece wing too. 80" is IMAA Sized !

Bob
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