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biggsgolf · 05-04-2021, 04:47 PM

David, silly but I cannot figure how the second driveshaft with the opposing gear is anchored to the endcap? Hooe this makes sense.

biggsgolf · 05-04-2021, 04:40 PM

So my 1:144 Kilo Pool Trials went well on surface maneuvers, however, ballast pump was inoperable. Upon my return to my shop I found that my Tx settings had been changed. I mapped my ballast channel five to switch C. Somehow that got changed…..grrrrrrr. Will return for pool runs in 10 days.

biggsgolf · 05-01-2021, 05:43 PM

Thankyou “my lord”, invaluable information! The photos with your descriptions always tell the story, even for numb nuts like me!

He Who Shall Not Be Named · 05-01-2021, 05:38 PM

Originally posted by biggsgolf

Thanks David for the eye candy! Is that a single drive shaft converted to dual with the gears? How do they attach to the prop shafts, I see what looks like tubing, I assume for illustration? Any thoughts on a submarine that would accomodate a 2” that turns sharply? Maybe a boat with the props forward of the planes & Rubber(s). Most seem to be dual props so would need to convert single shaft to dual ising gears.

Conversion from a single output to two counter-rotating outputs is done with the simple addition of an opposing gear that meshes with the single output shaft gear. Like so:

Here you see the only difference with the 1.25" SD motor-bulkhead is the inclusion of the opposing gear to drive the second propeller shaft.

The soft rubber tubing (silicon or latex) forms a poor-mans universal joint between drive chain elements. However, using this means of correcting for running gear off-set mandates that the thrust loads be absorbed at the after-most bearing points: The shaft strut bearings on the GATO; and the ball type gimbal on the Disney NAUTILUS.

That little KILO turns just fine! https://youtu.be/oc4XLg79QDI

Don't over-think this project!

David

Das Boot · 05-01-2021, 05:24 PM

[QUOTE=He Who Shall Not Be Named;n149489]

Oohh! I see. That's supper small! Agreed, maybe you can get a 1.25" SD into that Type-7. Tight fit for the 1/144 GATO. I'll help if I can.

How do you get your fat fingers in that little cylinder?

Das Boot · 05-01-2021, 05:20 PM

Great job.

biggsgolf · 05-01-2021, 04:03 PM

Thanks David for the eye candy! Is that a single drive shaft converted to dual with the gears? How do they attach to the prop shafts, I see what looks like tubing, I assume for illustration? Any thoughts on a submarine that would accomodate a 2” that turns sharply? Maybe a boat with the props forward of the planes & Rubber(s). Most seem to be dual props so would need to convert single shaft to dual ising gears.