RE: Sundowner 50 Arf

RE: Sundowner 50 Arf
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RE: Sundowner 50 Arf - 2/5/2008 2:26:30 AM

dhal22

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Pedro was who i was talking about. man he had that ys humming. that is a good looking pkg. btw, he has the ys inverted so there isn't much to see in the cowl. it hides pretty well.

david

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Post #: 51

RE: Sundowner 50 Arf - 2/5/2008 2:41:13 AM

Buzz Kill

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It looks good to, my dad custom painted it that wicked blue. It will be the perfect plane for the November rat race.

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Post #: 52

RE: Sundowner 50 Arf - 2/5/2008 8:25:45 PM

ReefBlueCoupe

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From: Mount Juliet, TN, USA
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Well I just ordered a Sundowner 50 and .75 AX. I hope it rips.

(in reply to F4FWildcat)

Post #: 53

RE: Sundowner 50 Arf - 2/6/2008 2:14:11 AM

patzane

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From: Glendale, AZ, USA
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I received my sundowner today and started working on installing the Tower 75. Things were going well until it was time to install the muffler and that where I stop. I did have to move the mounting holes less than 1/2 inch out. The problem I ran into was installing the muffler. The length of the Tower muffler is to long and it does not have enough room to clear the fuselage. I did take pic with my phone but for some reason can’t download it on my computer. I have to wait until the wife return home to get her camera. I did have to cut little area of the cowl to clear engine head. I have to go to a Bisson Pitts Muffler for it to work.

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Post #: 54

RE: Sundowner 50 Arf - 2/6/2008 5:00:42 AM

patzane

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Ok wife got home and was able to take a few pic on plane. Have to go with pitt style

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Post #: 55

RE: Sundowner 50 Arf - 2/6/2008 5:02:21 AM

patzane

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I got little to happy on the cowl.

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RE: Sundowner 50 Arf - 2/6/2008 1:58:53 PM

easton24

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I see what you are saying patzane. The tower muffler looks like the muffler of a os 91. That was the main reason I didnt go with that and used the os 75. The 75 uses a shorter power box muffler. The powerbox muffler stops short of the fueslage. You should be good using a pitts.

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Post #: 57

RE: Sundowner 50 Arf - 2/6/2008 4:35:28 PM

ReefBlueCoupe

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quote:

ORIGINAL: easton24

I see what you are saying patzane. The tower muffler looks like the muffler of a os 91. That was the main reason I didnt go with that and used the os 75. The 75 uses a shorter power box muffler. The powerbox muffler stops short of the fueslage. You should be good using a pitts.

When you were drilling holes for the new mount location, did you bolt the engine to the mounts with them off the plane, then hold the mount with the engine on it up to the fuselage to mark and drill them?

Also are the blindnuts installed from the factory, or do you install them seperately? Is there enough space between the original mount holes and the new mount holes you drilled to keep the wood from splitting due to one hole being so close to the other?

Thanks in advance. My stuff should be in tomorrow and Friday, so hopefully I'll be able to maiden it on Sunday if the weather co-operates. Same setup as you, .75AX

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Post #: 58

RE: Sundowner 50 Arf - 2/6/2008 5:38:44 PM

easton24

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Yes the blindnuts and holes were already installed by the factory. I screwed in one of the mounting screws and popped each one out. I filled the original holes with tight fitting wooden dowels and glue. Let dry then grind till the are even to firewall. I then clamped the engine to motor mounts using small c clamps and used thrust lines and old holes for orientation. It came out to 10 mm wider so ended up splitting the dirference by measuring from the center of the old holes 5mm on each side. I also marked the centerof the engine onto the motor mount so I could line up the thrust line that way. Oh also measure from thrust washer to back of motor mount. It cameout nice. Oh also the old holes actually overlap part of the old holes that is why you fill them with wooden dowel. The plane goes together quick so you shouldnt have any problems getting it ready to maiden in time. You wont be disappointed with the combo. Balance it right at 2.5 in. and she will be a sweet flying plane.

< Message edited by easton24 -- 2/6/2008 5:41:03 PM >

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Post #: 59

RE: Sundowner 50 Arf - 2/6/2008 6:49:25 PM

ReefBlueCoupe

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That all sounds pretty straightforward. I can't wait to get started :rock:

How far is it from your firewall to the front of the thrust washer on that .75AX?

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Post #: 60

RE: Sundowner 50 Arf - 2/6/2008 9:08:41 PM

easton24

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I cant remember I used what manual stated plus 1mm.

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Post #: 61

RE: Sundowner 50 Arf - 2/6/2008 9:21:59 PM

ReefBlueCoupe

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Thanks for the all info easton.

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Post #: 62

RE: Sundowner 50 Arf - 2/7/2008 6:46:32 AM

patzane

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Order the pitts muffler today from tower for the 75. Will be here next week Thur and looking to have this bird in the air on Friday.

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Post #: 63

RE: Sundowner 50 Arf - 2/10/2008 7:02:01 PM

ReefBlueCoupe

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Man, it's a **** getting that 75AX lined up so the crank is even with the center of the cowl hole, but that's probably because I don't know what I'm doing. I decided to ditch the 75 idea and put a .46ax on it instead.

Anyway, there might be a firewall problem with mine. I don't know if this is normal or not because this is only my third ARF and I haven't noticed this before..

I was installing the engine tonight and I realized the firewall, I guess you could call it the outermost firewall since there is a main firewall and then one that sticks out farther that the engine mounts to,.. anyways, the outermost firewall is 2 3/8" ahead of the main firewall on one side and 2 9/16" on the other. It really angles the engine. I tried washers between the engine mounts and the firewall, but then the engine is offset to one side once the cowl is on. I know some have built in thrust angles, but this just looks excessive...thoughts?

www.lxcoupe.com/images/firewall1.jpg
www.lxcoupe.com/images/firewall2.jpg

< Message edited by ReefBlueCoupe -- 2/10/2008 7:04:39 PM >

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