BKA-1124, Russian WWII River Monitor

[CharlieC]

Aki Naka has a free 1/50 T-34 on his site http://www.pluto.dti.ne.jp/~naka/ - from memory he uses a cylinder and hole system for his turret.

The stacked disk system has a disadvantage in that it has to be built very accurately for it to work properly.

Regards,

Charlie

[cgutzmer]

I hear ya on the accuracy......
Chris

[B-Manic]

Originally Posted by cgutzmer

I hear ya on the accuracy......
Chris

Thanks for the post Chris Halinski PzKpfw II Ausf C 1:25

I would have to change my formers to use that method, (un)fortunately I have some fixes to do in that area anyway. It will require a minor change compared to the nested cylinder method. The model is only about 2cm thick from keel to deck. For anyone else interested -> parts 3 and 4 are glued to each other only . . .

[Golden Bear]

Having done tests with them all I must say that the stacked disc system works out the best in the long run IMNSHO. The cylinder system can get trapped or cocked and then the gun pops off when someone tries to turn it, particularly for little guns.


Carl

[B-Manic]

Originally Posted by Golden Bear

Having done tests with them all I must say that the stacked disc system works out the best in the long run IMNSHO. The cylinder system can get trapped or cocked and then the gun pops off when someone tries to turn it, particularly for little guns.


Carl

I think it will be more sturdy but also eliminates the need to continously fiddle with the nested cylinders to get the turret level everytime you rotate the turret. The cylinders tend to act like a screw when you twist them causing the turret to rise, when the fit is tight. When it is loose the turret tends to slip out of position.

[Don Boose]

Lots of useful information is being presented in this thread. The river monitors with their tank turrets are fascinating craft and it has been interesting to see the various design and construction challenges discussed and overcome. There are some good insights into the horrendous fighting that the boats were involved in, as well.

The discussion of nested cylinders vs. stacked disks is worth saving, and I was glad to get the info on the 1/50 T-34 and PzKw-IV downloads. Lots of value in this thread!

Don B.

[shrike]

You could also adapt the 'bayonet' mounting used on some p*****c tank kits. Stacked disks with a set of keys and keyways to allow the turret to turn, but be removable. It would reduce the chance of glueing it permanently on accident, but provide the positive location of stacked disks.

[B-Manic]

Just an update, I recieved some very good drawings from svadim (thanks again, very much appreciated). I also got a student licence for Sketchup Pro (yeah). The new drawings show I have made some errors in the hull lines particularly around the screws (propellers in landlubber talk), so I will be moving what I have into sketchup and proceeding from there. I am also planning to scale it up, probably to 1/35 scale.

Merry Christmas - Happy Holidays - Seasons Greeting - Cheers - Splice the Main Brace

[Gharbad]

Originally Posted by shrike

You could also adapt the 'bayonet' mounting used on some p*****c tank kits. Stacked disks with a set of keys and keyways to allow the turret to turn, but be removable. It would reduce the chance of glueing it permanently on accident, but provide the positive location of stacked disks.

I've built one or two with that system, and it is pretty good. It's hard to make it fit properly though, since there's edges of the key can get caught on the socket as you turn it.

[shrike]

Woohoo! I was hoping for a bigger scale. Put me down for a 1/35 (1/33?) kit with old style turrets for sure!