Saturday, 12 April 2014

Making a start on the fuselages

Having received the components that we need to complete the motor installation, I have now worked out how to do it for one fuselage, so the other one should follow quickly.

The ‘problem’ is that the fuselage is not round but oval, everything else is round.  The motor also has the wires coming out of the side, between the gearbox and the motor – which is an out runner, so could damage the wires if they touched the motor.

So lots to the think about.  One last thing, the spinner size – we have to make sure that the fuselage diameter roughly matches the standard spinner diameters.

When all of these come together we get the following:
I've yet to glue this in place and then finish the fuselage so it's perfectly flush with the motor mount but this will follow soon.  I also need some screws to mount the motor on the plate.  I'm hoping Richard from T9HobbySport can help with this.

Next step is to order the speed controllers and batteries.  I'll then start to balance the fuselage - just roughly.

Tuesday, 1 April 2014

Mould Modification

Instinct F5J.  Well we had a short holt on the production of gliders to modify the moulds which has taken a lot longer than ever anticipated, but we are now in a position where we can continue.....thank the good lord :-)

The issue was that the moulds had a trough in front of the leading edge which was supposed to aid with trimming the excess cloth to size before joining together, also acting as a void for any excess resin and joining paste to go without affecting the surface finish.  The problem came when the cloth under the pressure of the vacuum was being stretched between the trough and the compound curve of the leading edge shape, this showed where the cloth could not be forced into the leading edge curve and not touching the surface of the mould, this can be seen on the finished product as air bubbles.

The only fix was to fill the leading troughs on all of the moulds, this took about 1kg of resin and 2 hours of prep work, 4 hours of filling followed by 3 days of curing and a massive 16 hours of sanding.  The results are great and this will be reflected in the new finished moulded products, the first new tailplane will be laid up this weekend with the hope that we can start production of the wings the following weekend.

Hopefully we are now back on track.................