People are joining and then emailing me to ask for plans. We do expect you to contribute to the community before being granted this option. I have added a section to the rules of the forum to cover this.

MU13 Charlesworth

Let us all watch your new project progress.
John Vella
Posts: 223
Joined: 20 Mar 2017, 22:09
Location: UK

Re: MU13 Charlesworth

Post by John Vella »

So after a few issues the covering of the airframe is complete . I had a problem requiring the reskinning of the top rear
Inboard ply skins of both wings. However with some heat the skins peeled back more or less intact. Covering in ORATEX was very straight forward with plenty of shrinkage around the compound curves. BALSALOC was only required on certain edges. The flying control set up was next. The ailerons set with 2 to 1 differential, 10mm down to 20mm up at root T.E. The elevators 25mm up and 20mm down. The carbon push rod is very stiff and so is unsupported from servo under the wing to the elevator horn. The rudder has a lot of movement, about 25 deg each way on a push pull cable system. A spring steel skid completes the back end. I guess that the main wheel being infront of the C of G unlike the K8 will mean the skid will get a hammering. The air brakes were the next job. ScalePolice please note that only the top operating DFS brakes are functioning as the bottom moving back paddles would be vulnerable to out landing on heather etc. The letter box openings are lined with 3mm sq spruce. The arms and side hinge frames are from 2.5mm glass fibre board. The hinge sides are joined by 3mm ply and 2mm steel pins used.the assemblies are fitted and glued to the skins upto the 3mm spruce strips between the letter box and the rear spar. The slots in the skins accommodate about 70 deg movement.the brakes are made from 6mm hard balsa sheet covered by 0.4mm ply skins. 3mm ply reinforcement mounts are inserted for the plastic horn mountings. The airframe needs a rig check when the weather allows. Regards John.
Attachments
Airbrake arms and hinges
Airbrake arms and hinges
Brakes fully open.
Brakes fully open.
Brakes closed.
Brakes closed.
Brakes front view
Brakes front view
View from left hand root.
View from left hand root.
Left wing
Left wing
Showing hinge mounting and push rod horn.
Showing hinge mounting and push rod horn.

John Vella
Posts: 223
Joined: 20 Mar 2017, 22:09
Location: UK

Re: MU13 Charlesworth

Post by John Vella »

Thanks Cliff, yes an NSFK colour scheme circa 1943 . I Hope to have it as a Munich area glider with the "Flying Man" on the nose. Regards John.

John Vella
Posts: 223
Joined: 20 Mar 2017, 22:09
Location: UK

Re: MU13 Charlesworth

Post by John Vella »

Hi, due to a short illness and bereavement in the family the modelling has come to a tempory halt. Here are the last set of pics taken of the build. The pilot is a Pete's pilot on loan from my Charlesworth K8. Regards John.
Attachments
Glazing being fitted
Glazing being fitted
Cyano glue on the frame
Cyano glue on the frame
Pilot on loan from K8
Pilot on loan from K8

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