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Old Jan 26, 2012, 04:50 PM
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Burke, VA
Joined Sep 2009
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Quote:
Originally Posted by tk240381 View Post
Totally offtopic (sorry about that).. but this guy got me thinking about the Crack Yak...

http://www.youtube.com/watch?feature...&v=yvQUvV1eDgQ
That was hilarious. LOL.
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Old Jan 26, 2012, 05:26 PM
High Tech Red Neck
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United States, IL, Lawrenceville
Joined Nov 2011
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Quote:
Originally Posted by jetinteriorguy View Post
That was hilarious. LOL.
Just goes to show ya,what a little fishing line can do! Ron
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Old Jan 26, 2012, 07:19 PM
Don't give in to gravity
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USA, FL, Palm Harbor
Joined Dec 2009
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Quote:
Originally Posted by Dan5.0 View Post
I guess now I can share some pics of my Proto Crack Yak...


Great scheme Dan! WHo designed the current Crack Scheme that is in production? I like the upside down TW on the side of the fuse of the current production scheme. Easy to read when doing low, slow, inverted harriers
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Old Jan 26, 2012, 08:23 PM
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Western North Carolina
Joined Jan 2006
142 Posts
Plastic on workbench

In the build thread hercdriver 777 uses "plastic" to cover the workbench to protect the bench and prevent the model sticking to the bench. In my builds of TH kits I have used Wax paper and the Welders sticks to it.
What plastic is this and where do you get it?
Thanks,
George
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Old Jan 26, 2012, 08:24 PM
Team Extreme! Team Twisted!
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Columbia SC
Joined Feb 2005
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It is painters tarp from lowes. It comes in a big roll and if you turn it over after the wing spar gluing you will not stick too much.
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Old Jan 26, 2012, 08:51 PM
inverted-i-fly
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United States, CA, Petaluma
Joined Mar 2011
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Maiden in 10-12 mpg today and it flew well but felt underpowered (might have been the wind), changing to a 8060 prop helped, spin rate is unreal, feels like I'm flying my 42" slick, flat spins, 4-point rolls were very sharp. impossible to hover, wind just push it all over the place. Also flew my friends new TH edge and it was, what is the word, more forgiving and easier to fly. Can't wait for a calmer day
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Old Jan 26, 2012, 09:09 PM
Team Extreme! Team Twisted!
hercdriver7777's Avatar
Columbia SC
Joined Feb 2005
4,327 Posts
With a little foamy like this and 10 kts of wind you are only going to be able to fly in one direction with the nose pointed into the wind. Wait for a calm day and get it all trimmed out, balanced and setup like you want and you will stoked. After that it may be more enjoyable to fly in the wind too.

One thing of note is that this plane has a lot more side area than other Twisted models and as such will need more rudder control on the sticks to keep it going in the direction you want. That is even more true in the wind. However, it is that side area that makes this plane very neutral in all axis and an all around more super duper. And a few other things...
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Old Jan 26, 2012, 09:21 PM
inverted-i-fly
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United States, CA, Petaluma
Joined Mar 2011
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I'm already stoked, it flys way more precise than my 34" edge from 3dhs, it is super responsive to stick inputs, it just doesn't have as much power, I will get a lot of flights on this in the coming months and hopefully get some inside flying with it also
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Old Jan 26, 2012, 09:26 PM
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Western North Carolina
Joined Jan 2006
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Thanks hercdriver! Sorry I shorted you on a 7 ;-).
George
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Old Jan 27, 2012, 09:52 AM
Extremely Twisted
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United States, NH, Epping
Joined Oct 2005
2,628 Posts
Herc,

What's your preferred cg?
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Old Jan 27, 2012, 10:35 AM
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USA, NC, Charlotte
Joined Nov 2009
102 Posts
Yup, I'm getting ready to cut out battery slot, wanted concensus on battery placement for plane that doesn't have LG. Based on what I've heard here, I was gonna to make the front end cut between the "S" and the "I" in the word design on the left side of the plane. Didn't want to get to close to the bottom of the aileron servo and have battery rip through in a crash. Thoughts?
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Old Jan 27, 2012, 12:15 PM
Team Extreme! Team Twisted!
hercdriver7777's Avatar
Columbia SC
Joined Feb 2005
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Ok guys I got the CG dead nutz today. For totally neutral it is 3.25" or 82.55mm from the leading edge of the wing where it meets the fuselage.

If you like 3D only and prefer to harrier and hover all day then you may move back slightly from there. If you like all precision and rolling you might move slightly forward from there.

*Battery location in pic is with the gear.
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Old Jan 27, 2012, 12:19 PM
RC Toys R 4 White Trash
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Joined Dec 2008
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Quote:
Originally Posted by bkent100 View Post
Yup, I'm getting ready to cut out battery slot, wanted concensus on battery placement for plane that doesn't have LG. Based on what I've heard here, I was gonna to make the front end cut between the "S" and the "I" in the word design on the left side of the plane. Didn't want to get to close to the bottom of the aileron servo and have battery rip through in a crash. Thoughts?
I like to temporary strap it in before cutting the slot, there are building variables that could change the cg, it's slight, but worth spending the extra time for a good setup.
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Old Jan 27, 2012, 12:21 PM
RC Toys R 4 White Trash
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Joined Dec 2008
4,090 Posts
Seems the build on these birds is so consistent, that pic looks exactly like my 2 Edges and Crack Yak lipo location.
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Old Jan 27, 2012, 12:40 PM
Team Extreme! Team Twisted!
hercdriver7777's Avatar
Columbia SC
Joined Feb 2005
4,327 Posts
I just got a couple of PMs about CG that made me want to make sure you all have the best info:

The actual location of the CG i.e the measurement of 3.25"/82.55mm will not change regardless of LG or build specifics. That is the CG at which the airplane is neutral. However, where you have to move your battery to attain 3.25"/82.55mm is going to change depending on equipment, LG, glue etc...

You can tweak your CG from that neutral position by changing the battery location to suit your particular flying style.
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