RE: Aviation Models 33% Yak Build Thread  
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RE: Aviation Models 33% Yak Build Thread - 7/8/2008 5:59:56 AM   
diamondave



Posts: 1675
Joined: 9/2/2004
From: marana, AZ, USA
Status: offline
quote:

ORIGINAL: BROKE STAB

quote:

ORIGINAL: diamondave

i called swb manufacturing direct today to order my arm, told him what happened and where i am at now with my set up, i was going to get the straight arm since i am on the hinge line on the rudder, but he said to cross the wires you get the offset arm, with the straight one 1 cable would get real loose at throw, he also said that his offset arm is desinged to be used if you are on the hinge line and just crossing the wires, he said he has this conversation several times a week and there is confusion out there, he desings them, i think his name was scott, he recomended the 4" offset so thats whats on the way, very nice guy and knew exactly the plane and everything i was talking about, id recomend them to anyone now for sure, so its coming from wisconsin to az priority, not sure if i wll get it by the weeknd but i know i am golden now, i feel better knowing i redid the rudder set up the correct way now too, we will be tearing it up soon

If the cables are straighyt then with a offset arm the control horn on the rudder must be moved back the same distance of the offset.
The attachment is from the SWB website.


well i was planing to cross them, thats the way you guys said you did it for this plane anyway i think?, got the arm today but no time to mess with it, will do it one of these nights...example B in the pic is the offset arm with crossed wires, and the horns on hinge are even, thats what i am shooting for, thanks

(in reply to BROKE STAB)
       Post #: 2176

RE: Aviation Models 33% Yak Build Thread - 7/8/2008 7:19:38 AM   
P-Diddy


 

Posts: 671
Joined: 12/12/2005
From: Eugene, OR, USA
Status: offline
quote:

ORIGINAL: bobzilla

Pat..the plane was spot on cg right and was awesome in the air. I love this yak!
thanks for your help!
Bobzilla



I knew you'd like it... I've flown a lot of planes, several different models of Yak 54's included, and none of them are as good as this one.

_____________________________

Currently:Aviation/SD Yak 54 33%(3W70),UltraRC GilesG202(BCMA 40cc),T-Rex600N(O.S. 50 Hyper), MSH Protos 500

(in reply to bobzilla)
       Post #: 2177

RE: Aviation Models 33% Yak Build Thread - 7/9/2008 11:35:47 PM   
diamondave



Posts: 1675
Joined: 9/2/2004
From: marana, AZ, USA
Status: offline 		it amazing how well something works when you set it up correctly , pull pull finally done the right way, snug at center, the "inside" one gets a tad slack at throw, i think it supposed to do that, i even got more throw then the 1st time i tried, ready to give her hell and see if she holds up this coming weekend

(in reply to P-Diddy)
       Post #: 2178

RE: Aviation Models 33% Yak Build Thread - 7/10/2008 8:09:11 AM   
P-Diddy


 

Posts: 671
Joined: 12/12/2005
From: Eugene, OR, USA
Status: offline 		Be prepared for some good knife edging Dave... =)

The only problem I've had with this plane has been the rudder set up. That rudder is so big that it has a great deal of leverage, and using the stock servo arm, even on the inner holes, has stalled out my 5955 servo at high speeds. My most recent move is to use a longer horn on the rudder along with using the inner holes. The deflection isn't as crazy as before, but what good is all that deflection if it only works on the ground?? I may try dual servos next if this doesn't help it.

On my first flight I noticed that it was flying with the tail wagging back and forth. Tightening the cables and moving to the inner servo horn holes fixed that, for those that may encounter this problem...

_____________________________

Currently:Aviation/SD Yak 54 33%(3W70),UltraRC GilesG202(BCMA 40cc),T-Rex600N(O.S. 50 Hyper), MSH Protos 500

(in reply to diamondave)
       Post #: 2179

RE: Aviation Models 33% Yak Build Thread - 7/11/2008 12:09:30 AM   
diamondave



Posts: 1675
Joined: 9/2/2004
From: marana, AZ, USA
Status: offline 		i read that too in this thead so i went with the 8711, that supposidly is enough, we'll see

(in reply to P-Diddy)
       Post #: 2180

RE: Aviation Models 33% Yak Build Thread - 7/11/2008 11:33:11 PM   
diamondave



Posts: 1675
Joined: 9/2/2004
From: marana, AZ, USA
Status: offline 		well we are set for this weekend, planning on saturday morning bright and early

(in reply to diamondave)
       Post #: 2181

RE: Aviation Models 33% Yak Build Thread - 7/13/2008 2:36:56 AM   
diamondave



Posts: 1675
Joined: 9/2/2004
From: marana, AZ, USA
Status: offline 		got some good flights today, new pull pull works like it is supposed to , going out again tomorrow, today was dialing in cg with velcro on my batts, i was going for hands off inverted, ive done that with other acro planes, so little by little moving batt back, flying inverted, trying flat spins, and seeing how it slowed for landings, thats how i tell my cg also, inverted spins were great from the start, upright got a little flatter with less throttle as i went back with cg, and the landings got nice and slow, but heres whats wierd, i dont know if it was my imagination or the increasing winds throughout the day, but it seemed like it got squrrlier in a hover and trolls, i know aft cg can effect the elevator making more sensitve but it shouldnt make hovering less stable should it?? i ended up where the nose will slighty drop inverted, close enough for me, barely any down needed to hold it, so i know built a little tray and wire tied in nicely, but i am curious to try in the morning again when its calm, i thought that was odd with the hovering thing, it was incredibly stable when i started, then got more twitchy with the cg back farther, like i said it was getting windier so i wont know until i try again with calmer weather, but any opinions on that? if it does seem worse i may move it slightly forward again and see if it gets stable again, the only drawback would be upright flat spins may not get as flat(unless i give more throttle) and the landing may be a tad quicker, by no means hot, just quicker, i do know i enjoyed the stable hovers early in the day more than the flatter spin at the end, if that makes sense

(in reply to diamondave)
       Post #: 2182

RE: Aviation Models 33% Yak Build Thread - 7/14/2008 5:23:54 PM   
show871



Posts: 191
Joined: 8/28/2007
From: Fort collins, CO, USA
Status: offline 		Hey I am in a jam, what is the best header, can, or pipe setup for this plane with a da 85. I need to order it asap

Thanks! 871

(in reply to diamondave)
       Post #: 2183

RE: Aviation Models 33% Yak Build Thread - 7/14/2008 8:53:27 PM   
diamondave



Posts: 1675
Joined: 9/2/2004
From: marana, AZ, USA
Status: offline 		i have enough power with my zdz80 and a pitts muffler, no need for a pipe imo, can if you want it quiter, i have no experience to help sorry

it must have been my imagination or the weather on saturday, sunday morning was calm and she locked right in to a hover, rolled it a few times, nice and smooth, my cg is good now

(in reply to show871)
       Post #: 2184

RE: Aviation Models 33% Yak Build Thread - 7/15/2008 3:59:25 AM   
tcruiser16


 

Posts: 2
Joined: 7/20/2007
From: Campbell River, BC, CANADA
Status: offline 		show871, KS1090 with a Mejzlik 28x10. 200 more rpm than Greeves with a 27x10. DA should have header and pipe I believe.

(in reply to diamondave)
       Post #: 2185

RE: Aviation Models 33% Yak Build Thread - 7/15/2008 8:03:56 PM   
show871



Posts: 191
Joined: 8/28/2007
From: Fort collins, CO, USA
Status: offline
quote:

ORIGINAL: tcruiser16

show871, KS1090 with a Mejzlik 28x10. 200 more rpm than Greeves with a 27x10. DA should have header and pipe I believe.

Thanks!

Has anyone noticed less motor vibration with the pipe vs the pitts?

871

(in reply to tcruiser16)
       Post #: 2186

RE: Aviation Models 33% Yak Build Thread - 7/21/2008 10:11:53 PM   
diamondave



Posts: 1675
Joined: 9/2/2004
From: marana, AZ, USA
Status: offline 		well i am regreting using the 5645's on the ail, they do suck for centering, i had about 5 or 6 of them lying around thats why i used them in the first place, but now i can move the surface one way, it centers, move the other way and it wont, move it back the same way and it will and the other way wont, not the same each time, any thoughts on 5625's??? am i being cheap? should i just get 5985's? those are on my ele and i love them, fast and powerful enough, and a tad less $$ than the 5955's, but the 25's would be way less $$, just curious on some opinions, i am dealing with it for now but i know i need to upgrade sometime in the near future, sucks to roll inverted than have to correct all the time

(in reply to show871)
       Post #: 2187

RE: Aviation Models 33% Yak Build Thread - 7/22/2008 3:47:47 PM   
juanes1969


 

Posts: 373
Joined: 5/10/2005
From: Comayaguela, , HONDURAS
Status: offline 		Dave, the 5625`s are just the same as the 5645, they a re just a little faster but mainly the same servo. The 5985 woud be the way to go. I have two on each aileron and work great. You can get the 5985`s at troybuilt or airwild hobbies cheaper that tower, I think they sell those at $75. They have the 5955`s at $89.

John

_____________________________

Just fly it!!

(in reply to diamondave)
       Post #: 2188

RE: Aviation Models 33% Yak Build Thread - 7/22/2008 9:35:59 PM   
pcsol



Posts: 170
Joined: 9/20/2004
From: Auburn, MA, USA
Status: offline
Does anyone have experience using the TOC carbon gear for this model ? If so could you post the width at the mount plate and the wheels pls ?
I have been using the Graphtec but its getting quite ratty. The TOC gear appears smaller than the stock metal gear ?
thanks.

(in reply to juanes1969)