Post by swanrail on Jan 22, 2008 23:46:18 GMT 1
I have now fitted my first servo to control the Anton gun turret. I carried out the following procedure for anyone who wants to do similar:
This picture shows the mods needed to frame 25 to take the servo. It is best done BEFORE gluing down parts 60!
Note the reinforcing strips to take the servo fasten down screws.
This picture shows the mini servo in place. Note that as the barbette will only be 2.5mm above the finished deck and so the servo needs to be lowered.
This picture shows part 60 in place, with the servo slightly protuding. Note the cut out in part 6o which is big enough to let the servo be removed if it ever has to. It also allows fine trimming of height for when the turret is constructed.
At a guess, I might fasten a revolving disc on the servo to carry the turret, somehow mounted magnetically to allow the turret to be removed, but at least any major work to the hull has been done before its too late.
I bought 4 miniservos from Steve Webb Models (www.servoshop.co.uk) together with 2 Y-leads and one extender lead. It is interesting that this company also sells a Y lead with one arm fitted with a reversing module, so that each servo moves in different directions. This is ideal for those wanting to conntrol 4 servos from one R/C channel, using one lead, normal on Anton, and reversed on Casar. Second Y-lead, normal on Bruno and reversed on Dora.
My model will have forward guns Anton and Bruno on oen R/C channel, and Casar and Dora on the other.
I have also gone deeper into the measurements. Unfortunately, part works never give you plans, unlike kit models. So I end up buying books to get the info I need. This time, I have bought the Anatomyof a Warship - Bismarck. Although much slated, what else is there? however, my impressions of the book is that it is more than sufficient for me, the German crew seem to think that the book is part responsible for the poor positioning of the stern anchor, but my book shows it in the correct place.
His measurements leave a lot to be desired, but his drawings seem to be very accurate to scale of 1 to 550.
Unfortunately, the original builders plans started numbering and taking all their measurements for the hull from a datum point which is where the stern crosses the waterline, which is several metres in from the end of the stern.
With our model, I do not yet know where the waterline will be, so all measurements using this point are null and void.
However, there is one point (and I have found only one)which is common to both our model and the plans, and that is the rudder stock.
Taking this as a datum point, the meaurements to the AXIS of each turret measuring forwards from the rudder stock are as follows:
DORA 33.657 metres 16.8cm to scale.
CASAR another 18.2 metres or 9.1cm
BRUNO another 109.986 metres or 54.9 cm
ANTON another 18.2 metres or 9.1 cm
These are the measurements I am using and to which Anton servo has been fitted.
This picture shows the mods needed to frame 25 to take the servo. It is best done BEFORE gluing down parts 60!
Note the reinforcing strips to take the servo fasten down screws.
This picture shows the mini servo in place. Note that as the barbette will only be 2.5mm above the finished deck and so the servo needs to be lowered.
This picture shows part 60 in place, with the servo slightly protuding. Note the cut out in part 6o which is big enough to let the servo be removed if it ever has to. It also allows fine trimming of height for when the turret is constructed.
At a guess, I might fasten a revolving disc on the servo to carry the turret, somehow mounted magnetically to allow the turret to be removed, but at least any major work to the hull has been done before its too late.
I bought 4 miniservos from Steve Webb Models (www.servoshop.co.uk) together with 2 Y-leads and one extender lead. It is interesting that this company also sells a Y lead with one arm fitted with a reversing module, so that each servo moves in different directions. This is ideal for those wanting to conntrol 4 servos from one R/C channel, using one lead, normal on Anton, and reversed on Casar. Second Y-lead, normal on Bruno and reversed on Dora.
My model will have forward guns Anton and Bruno on oen R/C channel, and Casar and Dora on the other.
I have also gone deeper into the measurements. Unfortunately, part works never give you plans, unlike kit models. So I end up buying books to get the info I need. This time, I have bought the Anatomyof a Warship - Bismarck. Although much slated, what else is there? however, my impressions of the book is that it is more than sufficient for me, the German crew seem to think that the book is part responsible for the poor positioning of the stern anchor, but my book shows it in the correct place.
His measurements leave a lot to be desired, but his drawings seem to be very accurate to scale of 1 to 550.
Unfortunately, the original builders plans started numbering and taking all their measurements for the hull from a datum point which is where the stern crosses the waterline, which is several metres in from the end of the stern.
With our model, I do not yet know where the waterline will be, so all measurements using this point are null and void.
However, there is one point (and I have found only one)which is common to both our model and the plans, and that is the rudder stock.
Taking this as a datum point, the meaurements to the AXIS of each turret measuring forwards from the rudder stock are as follows:
DORA 33.657 metres 16.8cm to scale.
CASAR another 18.2 metres or 9.1cm
BRUNO another 109.986 metres or 54.9 cm
ANTON another 18.2 metres or 9.1 cm
These are the measurements I am using and to which Anton servo has been fitted.