RE: Goldberg Ultimate 10-300 build

RE: Goldberg Ultimate 10-300 build
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RE: Goldberg Ultimate 10-300 build - 2/2/2006 1:15:03 PM

tuwood

Posts: 840
Joined: 11/20/2005
From: Omaha, NE, USA
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quote:

ORIGINAL: David Cutler

I will be starting to build mine soon too.

I have the choice of a Saito 100 or a YS 110. I am torn between the attractions of a light, great engine against a more powerful but heavier, great engine.

Any comments would be most welcome.

-David C.

I had narrowed it down to those two engines as well and finally decided on the 100 because I'd read of the YS being finicky to tune & the weight factor.
When I got to the LHS & saw that the Saito 125 was practically the same size & weight as the 100 I couldn't resist. I figured I'd probably get close to the power of the YS 110 for the weight of the 100.

Either way you go I'm sure they'll all fly the Ultie real well!! Good luck.

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Post #: 26

RE: Goldberg Ultimate 10-300 build - 2/2/2006 3:30:37 PM

rangerman

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From: Fort Worth, TX, USA
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Do you have both of them already?

(in reply to David Cutler)

Post #: 27

RE: Goldberg Ultimate 10-300 build - 2/2/2006 3:35:23 PM

David Cutler

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From: Los Angeles, CA, USA
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quote:

Do you have both of them already?

Yes. I have a YS110 that I bought when it first came out, that has been in a Dago Red Mustang and a Vector Flight 540 Edge, and a new, never used, Saito 100.

As I say, I'm torn between building very light and using the Saito, or building strong and using the YS.

-David C.

(in reply to rangerman)

Post #: 28

RE: Goldberg Ultimate 10-300 build - 2/3/2006 4:22:26 AM

tuwood

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Joined: 11/20/2005
From: Omaha, NE, USA
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I was able to spend about 4 hours in the shop tonight.
I finished the bottom of the top wing including sheeting & cap strips.

I thought it was a little odd installing the sheeting between ribs 6-7 but I'm assuming it's for extra strength on rib 7.

My daughter also wanted me to show you her scrapwood creation.

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Post #: 29

RE: Goldberg Ultimate 10-300 build - 2/3/2006 2:44:55 PM

rangerman

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I guess it depends on how you want to fly it.

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Post #: 30

RE: Goldberg Ultimate 10-300 build - 2/3/2006 2:46:00 PM

tuwood

Posts: 840
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From: Omaha, NE, USA
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I have a fuel tank question. I bought a 12 oz. tank per the kit recommendation but I just noticed today that the ARF comes with a 16 oz. tank.
I would like to use the larger fuel tank because I"m sure the 1.25 will be a bit thirsty but am curious as to why they recommend the smaller one.

Any thoughts/opinions?

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Post #: 31

RE: Goldberg Ultimate 10-300 build - 2/3/2006 2:49:05 PM

tuwood

Posts: 840
Joined: 11/20/2005
From: Omaha, NE, USA
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quote:

ORIGINAL: David Cutler

Yes. I have a YS110 that I bought when it first came out, that has been in a Dago Red Mustang and a Vector Flight 540 Edge, and a new, never used, Saito 100.

As I say, I'm torn between building very light and using the Saito, or building strong and using the YS.

-David C.

I have never used either engine, but from what I've read the 1.10 is a real stump puller so being a guy I have to recommend going with more power!!

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Post #: 32

RE: Goldberg Ultimate 10-300 build - 2/3/2006 2:54:21 PM

rangerman

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From: Fort Worth, TX, USA
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I just went over this yesterday with my brother (who's getting the other ultimate).
Here's what I told him.
The 125 uses 35 cc according to a Saito site.
From the engine forum they are breaking in their engines and getting 13 minutes on a 11 oz tank at full throttle.
So we figured using a 14 oz tank we should get 20 minutes at least of regular flying.
If someone has some real data I would like to know how close that is but I think the 16 oz tank would be for a 120 that uses 45-50 cc of fuel/min.

(in reply to tuwood)

Post #: 33

RE: Goldberg Ultimate 10-300 build - 2/3/2006 7:28:37 PM

rangerman

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From: Fort Worth, TX, USA
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Tuwood, nice art work. But that wing looks too straight, it may fly itself if your not careful

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Post #: 34

RE: Goldberg Ultimate 10-300 build - 2/3/2006 8:03:55 PM

tuwood

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quote:

ORIGINAL: rangerman

Tuwood, nice art work. But that wing looks too straight, it may fly itself if your not careful

hehe, thanks. well hopefully it stays straight after a few high-G snap rolls!

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Post #: 35

RE: Goldberg Ultimate 10-300 build - 2/5/2006 6:17:10 AM

tuwood

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OK, I'm about tired of building wings! Hehe, one of the many benifit's of a Bipe.

I finished sheeting the top wing & have moved onto the Aileron setup on the bottom wing. I have them hinged to the wing & have spent the last hour sanding the TE & Aileron's smooth. Man, I need a dust mask.

(cough cough)

Unfortunately Goldberg hooked me up again with some odd sized aileron stock for the inner TE of the wing. 2 of them were good but 2 of them were over 1/8" narrower than the good ones & one had a big flat spot at the top. Hopefully I can find some at the LHS because I'll need a pound of filler to make the other ones work.

I could possibly glue some 1/16" sheeting onto it to make up the difference.

I did notice that the CA hinges that came with my kit seemed very thin. I have a GP slot machine for cutting the CA slots & when I put them in they fell right through the slots. I grabbed a pack of GP hinges & they are 3 times as thick so I'll stick with them. I'm sure the stock CA hinges are probably OK, but they didn't inspire confidence in me.

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Post #: 36

RE: Goldberg Ultimate 10-300 build - 2/6/2006 5:52:23 AM

tuwood

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I finished beveling the aileron's for the bottom wing. I have to run to the LHS before I can do the top wing ailerons so I moved on.

I went back a few steps and finished the rudder assembly and then did the final steps of hinging & beveling the rudder/elevator assemblies. I did notice that the bevel seemed very "non aggressive" on the elevator so I bumped up the angle a little bit. I eventually want to try some low speed 3D type maneuvers & the extra throw may come in handy as a triple rate option. For example my SSE has approx 45 degrees of throw on the elevator & the high rate recommendation on the Ultimate is 14 degrees.

I'm sure somebody will tell me I screwed up but I figure it's better to have the extra throw there in case I need it rather then to need it and not have enough bevel.

With the tail feathers complete I moved on to the fuse. I pretty much rubber banded it all together & glued in the "C" & "D" formers. I did notice that there was a minute twist (probably wouldn't have mattered) in the chassis when I stuck the fin in and put my square on it. I couldn't tell it was there just looking at it or putting the square on the chassis only. I'm pretty peranoid about everything being straight so I'm glad I caught that.

enjoy & is there anybody out there still reading this thread. I'm sure I'm not the only one building an Ultimate.

oh, one more question? Any tips on building the landing gear block for the Stan's aluminum gear I have coming? As of now, I'm planning to stick a piece of ply in the normal LG area & reinforce with some triangle stock. I'm just waiting for the gear to get here before I do that part.

Tony

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_____________________________

I know what I don't know and I know it very well

(in reply to tuwood)

Post #: 37

RE: Goldberg Ultimate 10-300 build - 2/7/2006 1:23:24 AM