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RE: Baby Edge Build Thread - 7/17/2008 12:34:20 AM   
Steve Campbell


 

Posts: 4195
Joined: 12/8/2001
From: Zachary, LA, USA
Status: offline 		I used 4-40 bolts and blind nuts to secure the pants to the GraphTec gear.

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       Post #: 126

RE: Baby Edge Build Thread - 7/17/2008 12:37:20 AM   
Steve Campbell


 

Posts: 4195
Joined: 12/8/2001
From: Zachary, LA, USA
Status: offline 		Don't forget to fuel-proof your new wood parts. I'll use the same clear polyurethane I did the firewall/engine box/tank area with.

.

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       Post #: 127

RE: Baby Edge Build Thread - 7/18/2008 7:29:10 PM   
bbellfly


 

Posts: 128
Joined: 1/30/2005
From: Rome, GA, USA
Status: offline 		Has anyone had any experience with this plane sporting a Saito 125....? Is it powerful enough to hover, pull vertical unlimited?

bbell


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       Post #: 128

RE: Baby Edge Build Thread - 7/19/2008 8:29:33 PM   
Steve Campbell


 

Posts: 4195
Joined: 12/8/2001
From: Zachary, LA, USA
Status: offline 		IIRC, these models are supposed to be covered with Ultracote. The U-Cote colors I have do match the model's covering (more on that later); but the black used on this one is separating big-time in several places.

The first photo below shows just one area where the black covering is all screwed up- and it was like that when I unpackaged the model. Same with the second photo.

The third photo shows my fix; another piece of black U-Cote ironed in place. I didn't feel like taking the time to match the covering contours here, because this was the last area I did and, frankly, I was a bit tired of doing it.

Anyone else run across this?

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       Post #: 129

RE: Baby Edge Build Thread - 7/19/2008 8:41:12 PM   
Steve Campbell


 

Posts: 4195
Joined: 12/8/2001
From: Zachary, LA, USA
Status: offline 		I replaced the supplied tail wheel assembly with an Ohio Products Haigh unit. I have one of these on my H9 27% Extra and have been quite impressed with it. Looks good, is bullet proof, and gives superb ground handling.

However, I have never had much luck with those steenkin' springs they want you to use as steering connections. I came up with the following "system" after wrestling with those springs on the Extra.

I had originally intended to use one of the inner holes on one side of the rudder horn, but the angle and distance was enough to have some potential binding. So I installed a separate tiller arm under the horn.

The bottom of the rudder is made from soft balsa, so you must fabricate a hard point to attach the tiller. The first photo shows the piece of plywood that will be the hardpoint, and the area of the balsa cut away so the ply can be "inlaid".

The second photo shows the "inlay" in place.

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       Post #: 130

RE: Baby Edge Build Thread - 7/19/2008 8:44:26 PM   
Steve Campbell


 

Posts: 4195
Joined: 12/8/2001
From: Zachary, LA, USA
Status: offline 		The next photo here shows the inlay epoxied in place, with some Model magic filler applied and the area sanded smooth. Then, a piece of True Red UltraCote is ironed in place to hide the surgery. The colors matched perfectly.

Next, the completed tiller installation on the rudder, which has yet to be glued in place.

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       Post #: 131

RE: Baby Edge Build Thread - 7/19/2008 8:53:41 PM   
Steve Campbell


 

Posts: 4195
Joined: 12/8/2001
From: Zachary, LA, USA
Status: offline 		Finally, the completed hook-up. Note the angles of the new rudder tiller, and the tiller on the tali wheel unit. I bent that by the scientific method of putting the end in my Pana-Vise and grabbing it near the base with a pair of mini vise grips.

DuBro balls and cups are used for the connection, joined by a short piece of medium inner nyrod with 2-56 threaded couplers in each end.

This makes a stiff steering rod, yet one that will give a bit if necessary. It might have too much ground feedback for a cheap servo, but the Futaba 9151 in the Extra is holding up fine after close to three years with this arrangement; and that is a 15 pound airplane. I'm also using a 9151 on this (hopefully!) less-than-ten-pound model.

At any rate, this set-up isn't difficult to fabricate and works better than any tail wheel steering system I've tried to date. In the second photo, note the extreme deflection and how much the wheel is turned... IOW, much more than needed for positive ground handling.

As always, YMMV...

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       Post #: 132

RE: Baby Edge Build Thread - 7/19/2008 9:56:36 PM   
Deathbunny_SG


 

Posts: 219
Joined: 3/4/2008
From: , NJ, USA
Status: offline
quote:

ORIGINAL: Steve Campbell

IIRC, these models are supposed to be covered with Ultracote. The U-Cote colors I have do match the model's covering (more on that later); but the black used on this one is separating big-time in several places.

The first photo below shows just one area where the black covering is all screwed up- and it was like that when I unpackaged the model. Same with the second photo.

The third photo shows my fix; another piece of black U-Cote ironed in place. I didn't feel like taking the time to match the covering contours here, because this was the last area I did and, frankly, I was a bit tired of doing it.

Anyone else run across this?


Yup mine was like that too and lots of others have also reported this, i believe in the baby extra thread.

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       Post #: 133

RE: Baby Edge Build Thread - 7/19/2008 11:21:36 PM   
AirTech



Posts: 409
Joined: 1/28/2004
From: Allen, TX, USA
Status: offline
quote:

ORIGINAL: Steve Campbell

Finally, the completed hook-up. Note the angles of the new rudder tiller, and the tiller on the tali wheel unit. I bent that by the scientific method of putting the end in my Pana-Vise and grabbing it near the base with a pair of mini vise grips.

DuBro balls and cups are used for the connection, joined by a short piece of medium inner nyrod with 2-56 threaded couplers in each end.

This makes a stiff steering rod, yet one that will give a bit if necessary. It might have too much ground feedback for a cheap servo, but the Futaba 9151 in the Extra is holding up fine after close to three years with this arrangement; and that is a 15 pound airplane. I'm also using a 9151 on this (hopefully!) less-than-ten-pound model.

At any rate, this set-up isn't difficult to fabricate and works better than any tail wheel steering system I've tried to date. In the second photo, note the extreme deflection and how much the wheel is turned... IOW, much more than needed for positive ground handling.

As always, YMMV...

Steve,
The reason springs are used in most Haig style tailweels is to absorb the forces generated during ground operations. A direct connection will transfer to much torque to the rudder and consequentially to the rudder servo. I am using a Small Sig Tailweel Assembly (SIGSH756) in several of my planes. These are very light and easy to setup.

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       Post #: 134

RE: Baby Edge Build Thread - 7/20/2008 12:29:40 AM   
sailing1


 

Posts: 284
Joined: 8/17/2004
From: tulsa, OK, USA
Status: offline 		Steve you tail wheel assembly looks good. I used a Sullivan type tail wheel assembly even thought I really don't like them. Had it laying around so thought what the heck I will use it till it blows. Well that was over 100 take off's and landings ago and it is still porviding good control especially in cross winds when you really need it. I would have never thought that thing would last this long, but then again I have the same number assaults on the stock gear without a single bend or broken prop.

(in reply to AirTech)
       Post #: 135

RE: Baby Edge Build Thread - 7/20/2008 12:55:54 AM   
Steve Campbell


 

Posts: 4195
Joined: 12/8/2001
From: Zachary, LA, USA
Status: offline
quote:

ORIGINAL: AirTech
Steve,
The reason springs are used in most Haig style tailweels is to absorb the forces generated during ground operations. 1


I know. I alluded to that in my post. So far, it hasn't been an issue on the Extra.

.

(in reply to AirTech)
       Post #: 136

RE: Baby Edge Build Thread - 7/20/2008 12:57:41 AM   
Steve Campbell


 

Posts: 4195
Joined: 12/8/2001
From: Zachary, LA, USA
Status: offline
quote:

ORIGINAL: sailing1

Steve you tail wheel assembly looks good.


Thanks.

Do you have the Extra or the Edge?

.

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       Post #: 137

RE: Baby Edge Build Thread - 7/20/2008 10:58:56 PM   
Steve Campbell


 

Posts: 4195
Joined: 12/8/2001
From: Zachary, LA, USA
Status: offline 		Initial balance check shows she is nose heavy by a fair amount. This means putting the rudder servo in the tail.

That's a good news/bad news thing: the good news is, I despise fooling with pull-pull cable set-ups. The bad news is, there is no prepared hardpoint back there for a rudder servo, like there are for the elevator servos; so I'll have to make one.

No drama there... but for someone without a scrap wood box, the proper colors of UltraCote, building tools, irons, etc., it is NOT simply a matter of dropping a servo in as the manual leads you to believe. Fabricating a servo mount AND making it look halfway decent will be a fair amount of work. To not have to dick around with a pull-pull arrangement, it will be worth the effort...

.

(in reply to Steve Campbell)
       Post #: 138

RE: Baby Edge Build Thread - 7/22/2008 4:55:11 PM   
mk2491


 

Posts: 3
Joined: 9/19/2007
From: Lewisville, TX, USA
Status: offline 		Considering buying a used Wild Hare baby Extra 260 with a Saito 125 in it. I have read through the thread, however I don't see anyone talking about how it it flies. Is there anyone that has information on this combination and how it performs?

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