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    RE: Goldberg YAK 54 - 77" - 5/13/2007 6:43 AM   
    flyingcrazy


     

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    Status: offline     		I used a sullivan tail wheel on mine works good ,as for your muffler try hi tenp silicone on the bolt threads this works for me .

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    RE: Goldberg YAK 54 - 77" - 5/13/2007 7:34 AM   
    mystar46



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    quote:

    I used a sullivan tail wheel on mine works good ,as for your muffler try hi tenp silicone on the bolt threads this works for me .


    flyingcrazy,

    I tried high temp silicone, thread lock, pipe thread tape .... no luck. The Saito 2.20 is a real "thumper". The hanger I made is supporting the weight of the muffler, but it still has a little room to move. I tried to find some big lock washers, but haven't found exactly what I'm looking for yet. I've had a couple of other mufflers do this to me on OS motors and they eventually stay tight.

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    RE: Goldberg YAK 54 - 77" - 5/13/2007 7:55 AM   
    flyingcrazy


     

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    From: crandall , GA, USA
    Status: offline     		I had a Saito 1.80 I had to use two nuts and lock the first one down real tight then jam the other one behind it real tight . I also have my 77in. YAK for sale with a ZDZ 40 on it only one flight on it . It was a friend of mine that died and I got the plane after he died he never got to fly. I flew it one time just dont feel right flying it . I built it I even change the fire wall out to real plywood you cant even tell that I changed it . I do good work been build planes for over 30 years . It flys great.

    < Message edited by flyingcrazy -- 5/13/2007 8:02 AM >

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    RE: Goldberg YAK 54 - 77" - 5/14/2007 5:10 AM   
    dwkehoss


     

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    From: cheshire, CT, USA
    Status: offline     		I flew my yak last week and what a stable ship it is. Powered by a ST 3250 , 18/10 prop, futaba radio hitec servos. No trouble so far with landing gear or tail wheel. A few screws coming loose but thats expected. Muffler seems to be staying tight with plenty of lock tight. A real gentle giant and soo easy to land. The ST3250 gave me the biggest trouble with a lean condition only solved by plugging up one of the bisson muffler outlets. I'm considering a Perry pump so I dont have to rob peter to pay paul for the added fuel flow. My dealings with Carl Goldberg staff was fine and they did politely refere me to the on line warranty form. In the end I couldnt find a receipt and they sent the replacement cracked clevis assembly anyway so no complaints here re service.

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    RE: Goldberg YAK 54 - 77" - 5/22/2007 11:07 PM   
    YakPak


     

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    From: nowhere, ON, CANADA
    Status: offline     		Guys
    Any suggestions where I can get a carbon fiber wing tube for this plane.
    Watched the wings fold up on a brand new Aerworks 50cc plane with a metal tube on the weekend, don"t want the same thing to happen to my 77" Yak.
    Thanks
    Yak Pak

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    RE: Goldberg YAK 54 - 77" - 8/14/2007 4:30 AM   
    HLANG


     

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    From: RIO DE JANEIRO, BRAZIL
    Status: offline     		Hi Gyus.
    I have a carl Goldberg YAK54 with a Brison 2.4cc engine.
    I have some questions:
    1. I am looking a replacement ignition module to my Brison 2.4 Unfortunately, mine was broken.
    I tried several times contacting by email Briosn in Canada and USA and did not receive any response.
    My engine is the new one that does not use the white ring. It uses automatic timing.
    Can anyone help my find a new ignition module. Alson tried CH-Ignition, but they don't have email.
    2. I am using two JR DS821 sport servos for each ailerons.
    Are they enough for power ailerons?
    I have two Hitec 5465 Digital Ultra torque servos. I am considering replace JR servos with one Hitec for each aileron.
    Each JR servo has around 76oz. If I use two I will have twice power. But is it enough?

    Thanks any help.
    Henrique

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    RE: Goldberg YAK 54 - 77" - 8/15/2007 5:31 AM   
    mwhar760



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    From: weatherford, TX, USA
    Status: offline     		well because of your location you may have check their web site and mail them the info/funds ect. i do know they have an auto advance ignition that can be adapted for your engine

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    RE: Goldberg YAK 54 - 77" - 9/9/2007 5:28 PM   
    MadMonkey


     

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    From: Grapevine, TX, USA
    Status: offline     		Hate to bring up old threads, but I'm looking into getting a gas plane and I have a friend selling one of these cheap (NIB). Is there a consensus on a good gas engine for this plane yet? I want enough power for 3D, I'm tired of having underpowered planes.

    Recommendations on servos and setups also?

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    RE: Goldberg YAK 54 - 77" - 9/25/2007 1:09 AM   
    JerKap


     

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    From: Waterloo, IA, USA
    Status: offline     		The CG site says "Works great with Fuji 43 or Zenoah G-26 Gas" I would like to hear from people that have used the G26..


    Thanks..[/size]

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    RE: Goldberg YAK 54 - 77" - 9/25/2007 4:47 AM   
    jacklegchris



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    From: Livingston, MT, USA
    Status: offline     		I had a Brillelli 46 GT in mine. At your elevation that would be my suggestion. But wait, the DL 50 http://www.dlusa.net/ would be a great buy. Mine with the 56 oz. 46GT weighed in at about 15.5 pounds.

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    RE: Goldberg YAK 54 - 77" - 10/3/2007 9:24 PM   
    RLDIII


     

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    From: Spring, TX, USA
    Status: offline     		I need some technical information please regarding a discrepancy between the directions that came with my ARF 77" C.G. YAK 54 and the plane itself. The directions for mounting the engine indicate that I am to find the center of the firewall and draw a horizontal line across it. I am then to find the vertical center of the firewall and draw a vertical line down the firewall, offset 3/16 of an inch towards the left side of the plane To account for built in right thrust). In my direction manual, there is a picture of the firewall without the round hole in it that my plane has, and the lines have been drawn as described in the directions. The directions for this step then start to say that the picture does not include the round hole in the center of the firewall on the actual plane, but don't quite finish the statement. OK, all well and good. My problem is that my plane CAME with both a horizontal line and vertical line already drawn across the firewall, centered on the round hole cutout in the firewall. The vertical line seems to be placed roughly 3/16 of an inch to the planes left of the true vertical center, just as mentioned in the directions. Unfortunately, the horizontal line drawn at the factory across the firewall is nowhere near being equal distance between the top and the bottom edge of the firewall. It is actually quite a bit closer to the top of the firewall (about 1/2 inch) than the bottom. Now my question. Do I go ahead and draw my own horizontal line EXACTLY across the center (equidistant from the top and the bottom of the firewall) and then use it to position the motor mount on the firewall, or do I ignore the instructions that came with the plane and position themotor mounts based on the lines that came on the plane from your factory???? Has anyone else run into this?

    Also, just FYI, for all you folks who have had problems with Goldberg/Lanier service, I have discovered that in just the last few weeks, they have been bought up by Great Planes. The bad news for me is that the service folks at GP have no idea how to answer my question and say it may take them +/- 2 weeks just to get a hold of an actual ARF kit of the plane to LOOK AT before they can try to answer my question

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    RE: Goldberg YAK 54 - 77" - 10/7/2007 2:05 AM   
    dwkehoss


     

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    From: cheshire, CT, USA
    Status: offline     		My CG Yak also had the horizontal line off center but hole present. I centered the line. Seems to me that the concern here (if I used the line drawn by CG) that the eng hub would be a little off center (vertically)in the cowling . I also ended up installing an OS 3500 and benched the st3250 previously installed(see previous thread) . Anyone wanna buy a factory refurbished 3250 cheap?

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    RE: Goldberg YAK 54 - 77" - 10/7/2007 9:01 PM   
    RLDIII


     

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    From: Spring, TX, USA
    Status: offline     		dwkehoss, thanks for your reply. If I could just clarify what it was that you did. You say you "centered the line." Does that mean you centered you engine (vertically) on the horizontal line drawn at the factory (closer to the top of the firewall than the bottom), or do you mean that you "re-drew" the horizontal line "centered" on the firewall, and then used that line to center your engine?
    The reason I ask is that as you say, it will affect both the centering of the engine shaft in the cowl, but also the vertical thrust line along the fuselage. Anyway, once you did which ever, did the engine then appear to be resonably well centered (vertically) in the cowl?

    Thanks again,

    Lee

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    RE: Goldberg YAK 54 - 77" - 10/7/2007 11:19 PM   
    dwkehoss


     

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    From: cheshire, CT, USA
    Status: offline     		Lee

    I think a pic is worth a 1000 words so here you have two. I redrew the horizontal line and centered my engine on that. You can see both lines if you look close in the pic just to the right of the radial mount on the firewall. The difference between those lines is so minimal that it is difficult to say that in the end looking straight on like I am in the pics, a little bit one way or the other may just be a matter of cowl mounting. I, personally, don't believe that this little distance one way or the other would have any effect on thrust angle since angle is not changed as is the right thrust angle built into the firewall which is noticable when you look at it and also in the pics. At any rate the plane flies well and I don't notice any issue with thrust angles, not that I'm an expert. If anyone else wants to chime in about it, please do.

    Dave

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    RE: Goldberg YAK 54 - 77" - 10/8/2007 4:02 PM   
    RLDIII


     

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    From: Spring, TX, USA
    Status: offline     		Thanks,
    As you say, a picture really is worth a 1,000 words! As can be seen in your picture, if I split the difference between what the durections say for the location of the horizontal line and the one the factory put on the firewall, it really does only amount to between 1/4 and 1/2" difference. I am probably just being too anal about it. Like I said earlier, besides the centering of the prop shaft in the middle of the cowl, my main concern was the thrust LINE (not angle) of the engine relative to the wings and horizontal stab. However, with so little difference, I doubt it will make that big of an effect on how the plane flies.

    Thanks again for all of your help. As of now, the Great Planes Tech Support folks seem to be clueless!

    Lee

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    RE: Goldberg YAK 54 - 77" - 10/22/2007 5:37 AM   
    1VERTOL


     

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    From: San Diego, CA, USA
    Status: offline     		Gents,

    I just picked up one of these planes and am in the process of putting it together. I've spent the last few hours (rather days) going through the postings trying to figure out the right engine for this plane. I am looking to go with a gas. Which one seems the best? I'm reading a lot about the Brisson 2.4. Would a DA-50 work? What is their DA-50R model?? What would be the best Pitts exhaust? How much torque for servos do I need if I plan on using 4 servos in the ailerons?

    Thank you

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    RE: Goldberg YAK 54 - 77" - 10/22/2007 7:35 AM   
    nitro wing


     

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    From: surrey, BC, CANADA
    Status: offline     		Not sure what the ZDZ40 weighs.I doubt a 26 would do much in it.Its one of those in between airframes,tough to get a glow motor with enough power and hard not to go overweight with gas.I think a DA50 would turn this thing into a tank,no?

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    RE: Goldberg YAK 54 - 77" - 10/23/2007 5:50 AM   
    dwkehoss


     

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    From: cheshire, CT, USA
    Status: offline     		I put a 35cc, 2.13 Cubic Inch OS Max BGX two stroke in mine and seem to have unlimited vertical although havnt tried to hover yet. I wouldnt use anything less. Instructions say you can use standard servos but when I called Carl Goldberg, the tech stated, "depends how you are going to fly it". If you look back at some of the threads you will read how some have used one servo in each wing with good results although not sure if they do much 3D. I used 4 Hitech HS425BB servos in the wing, HS475's for the elevator and HS645MG for the rudder with a six volt system. I also read an earlier thread about re-enforcing the landing gear. Well Sunday I found out why when a hard landing snapped the plywood plate the gear is attached to as was the case in the aforementioned earlier thread so you may want to do that now.

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    RE: Goldberg YAK 54 - 77" - 10/23/2007 5:58 AM   
    1VERTOL


     

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    From: San Diego, CA, USA
    Status: offline     		After some research, I'm thinking of just staying with a nitro engine for this aircraft. My LHS suggested the Saito 180, but has a 220 for sale at a good price. Anyone think this is overkill for this bird? Seems to me the 180 would be a perfect match due to less weight??

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    RE: Goldberg YAK 54 - 77" - 10/23/2007 6:30 AM   
    YakPak


     

    Posts: 125
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    Last Login: 1/13/2009
    From: nowhere, ON, CANADA
    Status: offline     		No, I don't think a Saito 220 would be overkill. However, I did see a video of this plane being flown with a DA50 on You tube. Looked okay from the video, awesome pull out power. Although I would be concerned about airframe and firewall integrity over the longer term
    I have a Saito 180 in mine, and it is a very good match.
    However if I was to do it again I would have a closer look at a Brillelli 36GT
    Anyway, let us know what you end up going with.

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    RE: Goldberg YAK 54 - 77" - 10/23/2007 3:14 PM   
    dwkehoss


     

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    From: cheshire, CT, USA
    Status: offline     		If memory serves, the specs recommend anything up to a 2.2 cu. inch. I have the 2.13 and it is by no means overpowered.

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    RE: Goldberg YAK 54 - 77" - 10/23/2007 5:54 PM   
    1VERTOL


     

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    From: San Diego, CA, USA
    Status: offline     		Who makes the 2.3? Did you have to make any modifications to the airframe/cowling? What exhaust are you using? Thanks

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    RE: Goldberg YAK 54 - 77" - 10/23/2007 5:58 PM   
    1VERTOL


     

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    From: San Diego, CA, USA
    Status: offline     		How does your 180 perform? Which prop and exhaust are you using? Do you have any pictures? Stuck between a 180 and a 220. I want to have enough power to hover if I want and still be able to pull out and accelerate vertically.

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    RE: Goldberg YAK 54 - 77" - 10/23/2007 6:38 PM   
    RLDIII


     

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    Status: offline     		1VERTOL, for what ever it is worth, I am going with the Saito 220 single on mine. I have the engine mounted and am just finishing the plane up (waiting on my receiver to come back from being serviced/tuned), so I can't give you any flight specifics just yet. Hopefully I will have it in the air in the next month or so...

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    RE: Goldberg YAK 54 - 77" - 10/23/2007 6:54 PM   
    1VERTOL


     

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    From: San Diego, CA, USA
    Status: offline     		Do you have any pics of your 220 install? If I go with the 220, I'll more than likely use Saito's engine mount for stability. I don't think the stock one could handle it. Did you have to mount it inverted, or does it fit sideways like they recommend installing nitro motors? Which exhaust are you using? Sorry for all the questions, I'm just excited to get the best set up for this plane.

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