Here's mine so far.

Looking good Big Al! That will be one sweet airplane.

I like the blind nuts for the gear. That's your design, right? That's a nice piece of hardwood you've chosen for the bottom of the fuse, I wouldn't think nice hardwood like that would come with a kit.

Which leads down another road; landing gear bolts, nylon or steel. Of those expressing an opinion, both on the internet and at flying fields, the choice is nylon. In my experience nylon hasn't improved the amount of overall damage from a crash. One lone nylon bolt may stay in during a crash and the now free swinging gear and wheels in the micro seconds of a crash causes other damage. My thinking now after experience with carbon fiber is to mount carbon fiber gear as rigidly to the airframe as possible. Regular steel bolts or screws into the fuse and let the carbon fiber take the brunt.

Sorry Al for going off track! Thank you for posting the pictures. You've made good progress and I'm excited there will soon be another Goldberg Extra in the fleet.

I'll use steel bolts. I have the same type of setup on my midstar LG. Last week I set it down in the soy bean field, bent the aluminum gear very badly, but the mounting plate held firm. Zero damage to it. My thought is tight is right.
So far this plane is the truest building one I've ever built. I've built about a dozen sig planes, all control except the midstar. The wing and fuse both built straight as an arrow without much manipulating at all. That sure makes the build less stressful.
The only negative thing I can say is that the aileron stock, while straight and true, seemed very heavy. 1/4 lb to be exact. I cut lightening holes in them as well as the inboard fixed TE. The result was the weight is cut in half, and they remain straight, no warp.

I'm thinking I might have preferred the die cut kit over the laser cut kit. I'm finding that ribs 7-10 all need to be adjusted. Too long in front of the spar. I'm wondering if anyone is going to want my templates. [sm=48_48.gif]

Ilikebibes, the extra work you're doing with templates will benefit you. I'm not say a monetary benefit. Documenting the design is a good thing.

Therefore, it will take you longer to build yours. I hope you enjoy your build without the stress of the templates.

It's all good! I'm just too much of a perfectionist. I'll finish this build though, and re-use my templates too.

I enjoy building too much to let this get me down.

Winston Churchill has been quoted saying, "Success is going from failure to failure without loss of enthusiasm."

I'm pretty enthusiastic at the moment.

Brian

Your enthusiasm for this build is mirrored 100% by myself. You may feel like you're working alone but you aren't! Churchill was a great man, but there's no failure here and plus, he never built an Extra!

I'm sure you'll love flying it.

Had the best flying weather this whole year today.
Put another 7 flights on the extra.
What I was going to ask you guys opinion on is I changed from a wooden prop today to a plastic heavier one same pitch etc. and the engine loved it. It is a 15x 8 and when I got home found another similar prop but 16 x 6. and think the engine might like it even better.
I want to use it but do you think the plane will handle it ok.
Any one else tried that size.
Cheers and keep the build photos coming, I love it.

HI
I am Qmars
I buy a kit Extra with information :
Extra 300s 160R
WING SPAN 80.5 IN / 2040 MM
WING AREA 1175SQ IN / 75.5 SQ DM
FLYING WEIGHT 14.0 LB / 6380 G
FUSELAGE LENGTH 71.0 IN / 1800 MM

Please help to me for assembly with picture
tankyou

Is it a Graupner? For anything high performance that's what I'd go with. And the color of a nylon Graupner prop is pretty sweet.

Hi Qmars,

I'm sure you'll get some help if you post this over on the ARF/RTF Forum, http://www.rcuniverse.com/forum/foru...smode_1/tt.htm

Omar, I can't get the photos to enlarge but that looks like an ARF?? Is it??
Dobra, I have tested several different APC props with the two different engines I have had in this plane, the 1.20 OS FS and the YS 1.20NC and it fell into a pilots choice thing. Both engines seemed to like the 15X8 for the way I like to fly but the 16X6 gave the plane better verticle. The 16X4 wasn't a bad choice either. The only wood prop either of these engines worked well with were the Xoar wood props in the same size and pitch range. I can walk into any hobby shop here and buy the APC props so most of my testing was with them.
I like a slow plane with a lot of torque so I tend to go longer with less pitch on my planes. I know that looking for that super prop costs a bunch of money but it's just something you have to do.
Brian and Big, I wish I was closer to you guys so I could teach you how to glue something. You are missing all the big glue stains!! If you don't use up an 8oz bottle of CA how do you expect anything to stick??? Big, get back out to your shop and at least squirt some thin on the sheeted surfaces!!!
Brian, I don't know how they went about going from crush cutting to the laser but I figured they just went from the original die cutting plans and plotted them?? Scratch building from magazine plans there are always several mistakes like off sizes. Wish I could build one of the laser cut kits to see what the differences are. I do remember having to do a bit of sanding to make things fit, was it a lot??
Gene

Gray Beard thanks for that. The 16x 6 it is then.
Tuesday will let you know how I like that.
I want more vertical but not bothered about speed.
When my tank is full so for the first 5 mins of flight it has struggled just a small bit on climb so hopefully this will sort it out.

I used to get glue all over the place too, until I bought these. It makes world of difference. Lot's easier to work with too.

Actually, I remember being soo frustrated about how perfect the Pros made their planes. Every joint was PERFECT! Being a bit obsessive, I strove to find the answer to this. As it turns out, building slower actually produces a plane a lot faster. You don't have to fix all the mistakes. Then I learned how aliphatic resins work. When it comes to sheeting, I will use no other substitute.

I also use a lot of homemade jigging. You'll see that here quickly when I shoot some photos of my wing as it goes together.

I love edge gluing sheeting with wood glue.

Brian

Wow.

Reading through some of my posts, I've lost sight of my reasons for building this airplane. I'm going to build her as it is and use it that way. (with exception to the landing gear of course.) It will be unique and perfect for it's intentions. - Flat bottom fuse and all!

I'm even thinking about glassing the ABS and using the stock cowl until I can replace it with a good one.

Has anyone noticed we've made it on the busiest Posts list!!!!

Now everyone go to this link and offer your support! (PLEASE!!!)

[link]http://www.rcuniverse.com/forum/m_8994041/tm.htm[/link]

Brian, been there already. I have a bunch of different glue tips and keep a jar of acetone on my bench so I can keep them flowing. I too started using a lot of wood glue but I still have a big bottle of thin CA to keep my 2oz bottle flowing. During the spring and fall I have my shop windows and doors open and the CA doesn't get to me unless I'm sheeting so I use the wood glue too now days.
My point is both of you guys are very nice clean builders and neatness counts. A straight plane always will fly better. I too make up jigs and use several different straight edges and squares. I used to build fast but back then I was building a lot, these days it may take me a very long time to build a plane.I just seemed to run out of hurry??

Hi WestCoastflyer
Hi Gray Beard
HI Friends
I can not speak  English .
can i Question with pictures ?

[email protected]

Hi Qmars,

I think you should meet other people in the hobby. The AMA website has a club finder. http://www.modelaircraft.org/clubsearch.aspx Visit a club near you and make some new friends!

Lucky me!

On Saturday morning I was fortunate enough to locate, and procure a New-in-box Carl Goldberg The Extra 300. Even the tissue over the canopy is intact.

Love me a good Goldberg kit..

They're still out there for a while.

More pics of my mess.....um..I mean build. [8D]

Wow...really looking for a straight wing!! Is that your own aluminum angle?

That's the goal.

The aluminum angles are cut and drilled so I can push a pin through them and into the build board. Works pretty well actually!

Brian

Can that aluminum angle stock be bought at the hardware store?