as722

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I got the kit a couple of days ago but had to finish a few projects first. The first thing I did was all the lighting holes on the engine box, which saved 15 OZ !

If anyone has any questions on hole sizes etc. feel free to ask. Here's some pictures.

Albert Santiago

as722

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Engine box is done and all clamps were removed.

ibow24

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Does Dennis show all those lightning holes on the plans?
I'm looking over the 32% Yak I'm building and he just shows several round holes as before but all the build threads I've been seeing on 37% Yak and all the other 40% planes it looks like guys are really taking a lot of wood out of the motorbox now. I'm trying to decide how far I can go with this Yak. I'd like to really put it on diet as everyone does.
thanks
Steve

as722

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Hi Steve,

No dennis does not show those holes on the plans he shows four round holes on each side of the engine box and two on the landing gear plate. I have done this in the pass with excellent results, just make sure to make the corners of the "square holes" round instead of a perfect square. I also cut the landing gear plate 1" in front of the landing gear and replace that piece with balsa.

Albert

ibow24

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Thanks ALbert,
I'm going to talk to the guy I'm building it for and see how far he wants to take it. I don't see a reason why it can't be done on the 32% Yak also.

Steve

as722

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I 'll be using two 8611a's on the tail for the rudder so here's a picture of the servo mount on the back of the fuse sides.

as722

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Fuse sides are ready to be installed to engine box.

as722

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Bottom deck is sheeted with 1/16" balsa, notice the balsa strip on the bottom deck sides. I glued on the these strips first then sheeted the the bottom deck to eliminate on seam.

as722

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Fuse sides are glued on, starting to look like something !

as722

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Bottom deck installed. I decided to cut holes on the bottom deck even after saying i would never do it again, it only saved two ounces ! I've talked to guys that claim savings of 4 OZ and I'd love to see how because the whole bottom deck all sheeted and with no holes weights 6 OZ., after all it is almost four feet long.

zzw26n

My Feedback: (45)

Albert,

Does Dennis show the option of Rudder servos in the Tail and Pull/Pull ? Seems like several builders are opting for the Tail.

Great progress and thanks for sharing with us.

thanks, Ward

as722

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Hi Ward,

No he does not as this is really up to the builder. A few years back there seemed to be a contest to see how many servos we can put on a rudder tray, in fact I've seen a guy at a contest this summer with four 8611a's on a tray in a 40% extra. In the last year or so people are realizing that if the rudder servos are installed in the tail two 8611a are usually more than enough and a much simpler setup as well. With that said the tail must be kept light and this is why I'm going the extra mile to keep this fuse as light as possible.

Albert

zzw26n

My Feedback: (45)

Thanks Albert .....

I still want to build the Carden 30% Extra with you. I'll have Steve (ibow24) help me also, all I need is DA-75 to get me going.

Flyfalcons

I don't think the location of the servos makes the difference in their effectiveness, though of course it will make a difference in setup. My 40% 330 has two Futaba 1/4 scale analog servos set up in a pull-pull system in the fuselage, and the plane has plenty of rudder effectiveness for IMAC and 3D. Their combined power is about the same as two 8611As. I couldn't imagine the need for four 8611s in my plane.

as722

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Actually it makes a difference, the cables stretch under load a lot more than we think. There's also weight savings.

Albert

vatechguy3

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hey albert,

nice pics!! but i figured you would be covering the plane by now!! you've had over a week!!

just kidding, it looks like its coming along nicely!

tony

Flyin Woodbutcher

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tony how is your new plane coming?

Kent

as722

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Yeah tony how's your ARF coming ?



Albert

vatechguy3

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my plane is going great!!

ty is doing a great job building it!! and albert did a great job with all my sheeting in his vacuum bagger. i have some pics that i need to download so i can post them here for everyone.

i've been going up to ty's place to try and learn something about building cardens while he is building it too. my shop is due to be built by the end of the year, so hopefully i will be able to build my own plane next year!!

tony

Bobt2

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albert, to bad you don't live closer, it would be fun to put you and rob in the same shop!

as722

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I should've posted this before, i guess better late than never.

Albert

as722

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I'll be posting picture tomorrow. Fuse is done and I'll be working on the stabs next.

Albert

as722

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I decided to hollow out the front bottom pieces of foam, not to save weight but because they are much easier to fit this way.
The picture below shows the stock one on the right, the cut piece in the middle and the piece that was cut off on the left.
I'm including a picture of the "hot wire cutter" that I used.

I just wanted to mention that the stock one works fine and this is only more of an experiment for me than anything else.


Albert

as722

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Here's a picture of the vertical stab glued in place. I highly recomend gluing the trailing edge to the vertical stab then gluing the vertical stab on.

as722

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Turtle deck has been sheeted and I'm now ready to cut for the vertical stab, a band saw works well for this but can easily be done by hand.