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Skymaster 1/7.5 F-4 build, help needed

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Skymaster 1/7.5 F-4 build, help needed

Old 04-11-2013, 12:09 PM
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Miniflyer
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Default Skymaster 1/7.5 F-4 build, help needed

Hey guys,

over the winter i decided to give myself a little gift and got hold of a SM F-4 in 1/7.5 as ARF Pro with all accessories. Not very happy with overall fit and quality, and currently i am having issues installing the cockpit. I have taken out about half of the rear former to move the entire cockpit as far aft as possible, but feel the seat position should still be further aft.
Picture here: http://www.picpaste.de/20130411_132024_1_.jpg
Main problem however is the servo mount on the Nosewheel. It will press the entire cockpit assembly about 1/2" up....gear retraction therefore is only possible without the cockpit in place.
Picture here: http://www.picpaste.de/20130411_131939_1_.jpg and here: http://www.picpaste.de/20130411_131655_1_.jpg
Sadly there are no instructions available as to placement of the components, so i have no idea what i am doing wrong, or if there is a design flaw in there somewhere.
I'd be glad to see how you guys worked this out.

Many thanks
Hank
Old 04-11-2013, 12:42 PM
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f106jax
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Default RE: Skymaster 1/7.5 F-4 build, help needed

Great selection Hank. My SM F-4 is headed into it's 5th season. On the nosewheel steering servo, you'll need to notch the cockpit tub somewhat to permit the servo mount to retract totally. When the pilot is installed in the cockpit, you can't see the notch.
Old 04-11-2013, 12:52 PM
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ravill
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Default RE: Skymaster 1/7.5 F-4 build, help needed

What he said.

Make REALLLYYYYYYYYY sure you use the new aft CG: the leading edge of the carbonfiber tube. I'm on my second F-4 and this second one is a SWEETHEART!!!






And the OG.

Old 04-11-2013, 02:15 PM
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Miniflyer
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Default RE: Skymaster 1/7.5 F-4 build, help needed

Ahhh so it is an uncorrected design flaw. Thanks a lot, i'll get out the dremel tomorrow and do some corrective work. A lot of work to go into this "ARF", but i hope in the end it will be worth it...

Thanks again for the superfast response!
Old 04-11-2013, 04:30 PM
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David Jackson
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Default RE: Skymaster 1/7.5 F-4 build, help needed

You won't be sorry, the Skymaster F-4 is a real joy to fly. I had about 30+ flights on mine before trying to move a tree out of the way. Needless to say, that was one of a few challenges that I lost. Enjoyed the plane so much, I might replace the airframe. Good luck with yours and "Watch out for those tree."
Old 04-11-2013, 05:15 PM
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Default RE: Skymaster 1/7.5 F-4 build, help needed

I love mine. It's got over 100 flights and still going strong. Yes you will have to trim the front of the cockpit tray. See pic:
http://i1152.photobucket.com/albums/...ps72b621ab.jpg

Also, check your wheels. Mine didn't have washers over the bearings, just the nut. One day on take off the bearing gave way and the wheels came off. Be sure and put washers on both sides of the bearings to prevent this.

Andy

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