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Joined: 4/14/2008 From: Auckland, NEW ZEALAND Status: offline
Slowly starting to get into the hardware installation as the build progresses.
Installed the fuel tank as shown. I didn't want to spend like $10 on fancy latex foam padding so just used some old-school "foam" I had laying around...did the job just fine I also installed the throttle and rudder servo. I elevated the rudder servo to keep it out of the way although in hind sight this isn't really necessary. THe basswood split when I screwed it in...knew I should have done those pilot holes first ...will replace that part again soon. i didn't want to go to all the trouble of making a servo tray when only two servos are going to be there (elevator servos are going in the tail). I also placed the throttle servo linkage in there using the supplied wire in the Ultimate kit and the EZ connector on the servo. I will glue this in later...
The stringers on the top of the fuse are bass wood and a little thicker than the stock balsa supplied with the kit. This gives a little more strength to the firewall and also the balsa sheeting to be placed on top. Evertying is still looking abit rough but obviosuly sanding and dressing has yet to be done and I am still well in the construction phase.
Starting to get excited now as this baby is starting to take shape
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Joined: 6/1/2005 From: El Paso,
TX, USA Status: offline
Hi Fallingleaf! I flew my bipe yesterday, nice day but also very hot (98o f.) Looks like this summer will be hotter than others. New engine performs really good, throttle manage was from 1/2 to 3/4 throttle most of the time. Verticals are great, big loops are easy to perform, Carlos Fainsod (Our Instructor) did several pattern maneuvers and he was very comfortable with the plane. Our field is located at 4,000 ft above sea level, the day as I mentioned was very hot with no humidity, and so several engines were retuned for this occasion, not the case for my new OS 1.20 AX which was already set up on the rich side. Easy starts, reliable idle, everything was perfect. This far I am very happy with the engine results. Omega 15% and an APC 16 x 8 prop were used. I believe that after 10 or more flights I will reset the needle valve again and will also try a 17 x 6 prop. I am posting a picture of my in-fuse servos set-up.
Posts: 150
Joined: 4/14/2008 From: Auckland, NEW ZEALAND Status: offline
Thas great to hear Alfredo! I sure am looking forward to seeing this bipe take shape. Out of interest, why did you not use the stock throttle wire supplied with the kit? I was thinking of using a thicker 2-56 pushrod of the sullivan type if I run this stright out the fireway I felt it may get in the way of he fuel tank should I ever desire to remove it in the future. The stock wire is alittle thin but I figure its only for the throttle so there wont be much strain on it and with proper seating it should have very little slop.
I am also going to use the powerbox mopunted 90 degrees...I have too many doubts about the Bisson regarding pressure and to be honest, I can't be bothered mucking around with it!
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Joined: 6/1/2005 From: El Paso,
TX, USA Status: offline
I thought I did, I just can't remember. Sometimes I just grab from my workshop a wire of the required length (already cut) and keep the one that comes with the kit for a future use. I have a bunch of wires of different sizes from previous planes and kits so that is maybe what have happened here. It works fine even that the sleeve is only glued at the firewall, the rest of the sleeve runs lose.
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Joined: 6/1/2005 From: El Paso,
TX, USA Status: offline
Yes it is all red on bottom, last Sunday I took some video but there were a lot of sun and glare so the video is useless. I will try again next time and will be glad to share it. Thanks for your comments MuSo.
Posts: 150
Joined: 4/14/2008 From: Auckland, NEW ZEALAND Status: offline
Put the fuel lines in this evening, just (2) pressure and fuel. i was going to use a Great Planes Kwik fueling valve as pictured, but would have to place it on the side of the fuse which would result in twice the length of tubing required than if i just ran the line stright to the carb. I don't like that idea having the fuel going sideways and then back again
So I am goign to install a 'T' in each line and run seperate lines to the bottom of the cowl for fuel filling and venting (overflow). This is the same setup reccomended on the Aeroworks Yak 54' manual and looks like it works a charm.
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Joined: 6/1/2005 From: El Paso,
TX, USA Status: offline
I commonly use the three line set up (Not Uniflow), one of these lines is used only for refueling (Note the fuel dot at the front of the cowling) I control the overflow by disconnecting the line that goes to the muffler and I always use an extra tank that I carry in my tool box, to avoid spill the excess of fuel on earth. If you do not want to disconnect the line that goes to the muffler you may use a "T" and an extra dot to control the overflow. I do not like to mess or disconnect the line that goes directly from the tank to the carb. I also use a fuel filter in this line. I have read the Muffler thread and it is very interesting, your choice seems to be very adequate. Have you been thinking on your final trim?
Posts: 150
Joined: 4/14/2008 From: Auckland, NEW ZEALAND Status: offline
Alfredo,
yeah in hindsight I might do that and stick another small length of brass tube in there, but still use a 'T' on the pressure line for vent/overflow when filling. I will see how it goes when the cowl is installed though as the pressure nipple might be accessible in which case I can just remove it each time WIll certainly have a filter on the fuel line to the carb.
I have afew ideas for trim but want to do something a little different as all ultimate schemes tend to look the same line wise. In my original pics of the box you can see the colours I have, I also have black, pearl copper, yellow and white.
At this stage I am thinking to aluminium on the bottom of the fuse, wings and stab, with a red trim for visibility. And insignia blue and the main colour on the top. As for trim patterns I am undecided but will certainly be using pearl copper, black and white colour at least.
Posts: 150
Joined: 4/14/2008 From: Auckland, NEW ZEALAND Status: offline
Little bit more tonight, fastened the cabanes on and attempted to place the sheeting on the top deck. I got one done which came out pretty sweet. Put a little hobbico hobby lite in there prior to sanding.
The other one just didn't happen You can see the difference in grain between the two sheets I was supplied. One is nice and goes in one direction, the other goes all over the place! As you can imagine, no ammount of water was going to get that sucker to bend, so it snapped and ended up in the mess also pictured below My fisrt real issue with poor wood/grain selection in this kit. I will have to go get some new 5/64 balsa from the LHS this weekend. I don't want to take the cabanes off again either so I will have to make some cutouts to fit the sheeting in place and then glue them back in. Bit of a pain but what cha gna do about it
Also inserted an additional line into the tank for filling as per every ones suggestions, cheers! Should make filling etc a breeze.
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All Forums >> RC Airplanes >> Kit Building >> RE: Goldberg Ultimate Biplane Engine 
RE: Goldberg Ultimate Biplane Engine - 
I also installed the throttle and rudder servo. I elevated the rudder servo to keep it out of the way although in hind sight this isn't really necessary. THe basswood split when I screwed it in...knew I should have done those pilot holes first 
...will replace that part again soon. i didn't want to go to all the trouble of making a servo tray when only two servos are going to be there (elevator servos are going in the tail). I also placed the throttle servo linkage in there using the supplied wire in the Ultimate kit and the EZ connector on the servo. I will glue this in later... 
You can see the difference in grain between the two sheets I was supplied. One is nice and goes in one direction, the other goes all over the place! As you can imagine, no ammount of water was going to get that sucker to bend, so it snapped and ended up in the mess also pictured below 
