Search found 403 matches

by David Jones
August 22nd, 2010, 9:39 am
Forum: Your New Projects
Topic: Zirolli B25 Mitchell build
Replies: 118
Views: 51357

Re: Zirolli B25 Mitchell build

Each rudder and elevator will have its own servo. It was decided that the elevator servos would be mounted central, rather than at the inboard ends. Alan wanted then mounting upright, so the top of the servo would protrude out of the tail plane similar to the aileron servos. I made up some false rib...
by David Jones
August 22nd, 2010, 9:38 am
Forum: Your New Projects
Topic: Zirolli B25 Mitchell build
Replies: 118
Views: 51357

Re: Zirolli B25 Mitchell build

The ply hinge plates and balsa blocks were made up and the brass tube bushes were glued in. These were then dry fitted in situ and the piano wire hinges were inserted to check for alignment. Once satisfied that all was correct, the hinge blocks were glued in and the 1/16” balsa top sheeting was adde...
by David Jones
August 22nd, 2010, 9:36 am
Forum: Your New Projects
Topic: Zirolli B25 Mitchell build
Replies: 118
Views: 51357

Re: Zirolli B25 Mitchell build

I’d already built the basic skeleton for the tail plane, so I don’t have to worry about amending what I’ve already done. As it’s going to be a removable unit, I’ve added solid balsa infils in the centre. The idea is that the tail plane will be retained by dowels at the front and bolts into captive n...
by David Jones
August 22nd, 2010, 9:33 am
Forum: Your New Projects
Topic: Zirolli B25 Mitchell build
Replies: 118
Views: 51357

Re: Zirolli B25 Mitchell build

Due to a bereavement in the family, I’ve not been in the workshop much of late, hence the delay in the build. Things are starting to get back on track and I’m managing to do a bit here and there. This has given Alan a chance to be getting on with glassing the nacelles. They’ve had a layer of cloth o...
by David Jones
June 27th, 2010, 11:13 am
Forum: Your New Projects
Topic: Zirolli B25 Mitchell build
Replies: 118
Views: 51357

Re: Zirolli B25 Mitchell build

The rest of the fuselage was then sheeted below the level of the centre section. In order to fit the nose leg in position, and for the leg to retract, a large section of sheeting was cut away, this will be covered by a removable plate, either made up from thin aluminium or rolled ply. This will make...
by David Jones
June 27th, 2010, 11:12 am
Forum: Your New Projects
Topic: Zirolli B25 Mitchell build
Replies: 118
Views: 51357

Re: Zirolli B25 Mitchell build

As the centre section will be permanently fixed, access to the inside of the fuselage will be via the bomb bay. We have decided not to include working doors, but to have a removable hatch instead. Sub formers were added at the front and rear ends, and the hatch area was then sheeted while in situ, b...
by David Jones
June 6th, 2010, 10:16 am
Forum: Your New Projects
Topic: Zirolli B25 Mitchell build
Replies: 118
Views: 51357

Re: Zirolli B25 Mitchell build

No problem Alan, like they say, two heads are better than one.
Dave jones.
by David Jones
June 5th, 2010, 11:05 am
Forum: Your New Projects
Topic: Zirolli B25 Mitchell build
Replies: 118
Views: 51357

Re: Zirolli B25 Mitchell build

Thanks for your comments Alan (G), the colour scheme is yet to be decided upon. The silver and yellow, as per Colin Hammond's is really nice, but there's something about invasion stripes that makes a warbird stand out. As far as working doors etc, we were thinking of including them but, after a day ...
by David Jones
June 4th, 2010, 10:09 am
Forum: Your New Projects
Topic: Zirolli B25 Mitchell build
Replies: 118
Views: 51357

Re: Zirolli B25 Mitchell build

The next stage of the build is to add some 1/8” sheeting below the wing seats so the centre section can be fitted. I failed to notice that the stringers in this area are hardwood. Due to the non standard size of the notches in the stringers, an order has been sent off to Stuart at Solutions for some...
by David Jones
June 4th, 2010, 10:08 am
Forum: Your New Projects
Topic: Zirolli B25 Mitchell build
Replies: 118
Views: 51357

Re: Zirolli B25 Mitchell build

The bearers for the retractable nose leg are then fixed in place. The cut outs in the formers are too far apart for the Robart mechanism, so I made up a U shaped plate from 1/ 2” ply to fit. The formers were beefed up around this area and 4mm captive nuts were added.
by David Jones
June 4th, 2010, 10:05 am
Forum: Your New Projects
Topic: Zirolli B25 Mitchell build
Replies: 118
Views: 51357

Re: Zirolli B25 Mitchell build

We were able to spend a day with Keith Mitchell at Longhorsley at the beginning of May. He showed us the ins and outs of his model and imparted to us some very valuable pieces of advice, for which we owe him many thanks. The final outcome of some further deliberations is that the wing centre section...
by David Jones
June 4th, 2010, 10:02 am
Forum: Your New Projects
Topic: Zirolli B25 Mitchell build
Replies: 118
Views: 51357

Re: Zirolli B25 Mitchell build

For those of you who have been following this build thread, and may have been wondering where I’ve disappeared to, here’s a quick update. Due to other commitments I’ve not been able to resume working on the model until this week. The final shaping and bottom sheeting around the cut outs for the flap...
by David Jones
June 2nd, 2010, 12:18 pm
Forum: General Discussion Topics
Topic: Solutions
Replies: 2
Views: 1634

Re: Solutions

Dave, many thanks.
Dave Jones
by David Jones
June 2nd, 2010, 11:08 am
Forum: General Discussion Topics
Topic: Solutions
Replies: 2
Views: 1634

Solutions

Hi chaps, could somebody please let me have the contact details for (Stuart?) Solutions Wood Supplies.
Cheers. Dave Jones (3275)
by David Jones
April 15th, 2010, 2:00 pm
Forum: Your New Projects
Topic: Zirolli B25 Mitchell build
Replies: 118
Views: 51357

Re: Zirolli B25 Mitchell build

The nacelle was then sanded to shape, balsa block being used to form the end cones. The whole procedure proved to be a time consuming affair and, due to the shape and certainly the size of the nacelles, it reminded me of when I used to build model boats. If this thing doesn’t fly, it will certainly ...
by David Jones
April 15th, 2010, 1:56 pm
Forum: Your New Projects
Topic: Zirolli B25 Mitchell build
Replies: 118
Views: 51357

Re: Zirolli B25 Mitchell build

It was my intention to complete the ailerons and flaps next, but I realised I had to see how the flaps would fit against the nacelles so, back to the centre section. The 1/8” balsa formers were added to the box sections and sheeting the nacelles began. I started by adding 1” wide balsa strips to eit...
by David Jones
April 15th, 2010, 1:53 pm
Forum: Your New Projects
Topic: Zirolli B25 Mitchell build
Replies: 118
Views: 51357

Re: Zirolli B25 Mitchell build

There is no mention whatsoever on the plans for the landing lights, so I’ve made a design up myself. Sod’s law dictates that if you permanently fit something electrical or mechanical with no future access, it will break. With this in mind I decided to fabricate a removable module to give access to t...
by David Jones
April 15th, 2010, 1:51 pm
Forum: Your New Projects
Topic: Zirolli B25 Mitchell build
Replies: 118
Views: 51357

Re: Zirolli B25 Mitchell build

The 5/16” leading edge was then added and the panel sanded to shape. The leading edge was cut away for the landing light bay.
by David Jones
April 15th, 2010, 1:50 pm
Forum: Your New Projects
Topic: Zirolli B25 Mitchell build
Replies: 118
Views: 51357

Re: Zirolli B25 Mitchell build

Before the top sheeting can be fitted, provision for the servo leads and landing lights has to be catered for. Paper tubes were made up and fixed in place in the pre cut holes in the ribs. For now, string has been used so that I can pull the servo wires through as and when the servos are fitted. We ...
by David Jones
April 15th, 2010, 1:45 pm
Forum: Your New Projects
Topic: Zirolli B25 Mitchell build
Replies: 118
Views: 51357

Re: Zirolli B25 Mitchell build

The ailerons and flaps were completed and hinged. The outboard flap is hinged to the outer panel, but a further length of approximately 3 inches extends inboard to the nacelle, and is cranked at the panel join due to the gull wing configuration.

Go to advanced search