today's work

[He Who Shall Not Be Named]

[redboat219]

Will you also be trying a single motor with gear splitter set-up?

[He Who Shall Not Be Named]

Will you also be trying a single motor with gear splitter set-up?

Nope....................

[He Who Shall Not Be Named]

[redboat219]

Waterproof motor box?

[He Who Shall Not Be Named]

Waterproof motor box?

Nope. In the wet.

[bwi 971]

Thinned the air dry putty to paint it on and then sand it down?
Grtz,
Bart

[He Who Shall Not Be Named]

Thinned the air dry putty to paint it on and then sand it down?
Grtz,
Bart

Yupe......

[redboat219]

not a lot of space in the stern for linkages.
thinking you're going with differential motor steering and operational front planes only

[redboat219]

6-14v dual brushed motor esc for RC tanks

[He Who Shall Not Be Named]

not a lot of space in the stern for linkages.
thinking you're going with differential motor steering and operational front planes only

No such thing as differential steering with varied propeller thrust on this design -- the nexus point of the two shaft forces is so close to the actual boats c.g. that the only effect was a slight crab -- a lateral motion -- instead of the desired yaw motion.

On the actual boats, that nexus point was aft of the c.g., so what very little yaw differential thrust produced was ass-backwards to the norm. Conning one of these beasts within the breakwater must have been a total *****.

Study the toe-in of the Type-21 shafts and think it through, pal. Nice ESC you've dug up on the internet, but useless on this submarine.

The two motors will be wired in parallel, and one ESC will do all the work. KISS.

Rudder, stern planes, and bow planes will be practical... as usual.

David

[redboat219]

Rudder, stern planes, and bow planes will be practical... as usual.

David

in this case

bring out the watchmaker loupe

[He Who Shall Not Be Named]

[ffr2608]

Looks great Dave. The real type 21 must have had some shallow angle gearboxes to couple the motors.
DH

[He Who Shall Not Be Named]

Looks great Dave. The real type 21 must have had some shallow angle gearboxes to couple the motors.
DH

The two shafts were not coupled, they worked independently. An experienced boat-driver could work out the 'Chinese' differential thrust situation unique to the class and use it to advantage when maneuvering in and out of pier.