New Trumpeter Kilo 1:144 Build

[biggsgolf]

David, any of those 1.25” SD’s from about six years ago available anywhere?

[He Who Shall Not Be Named]

David, any of those 1.25” SD’s from about six years ago available anywhere?

I don't sell stuff anymore.

However, if you're talking about a SD for the 1/144 Trumpeter KILO, then you're talking a 2" diameter SD. Such:

[biggsgolf]

Yeah David I have a couple of 2” SD’s, want to convert a 1:144 Type Vll, so need a smaller one, lol

[He Who Shall Not Be Named]

Yeah David I have a couple of 2” SD’s, want to convert a 1:144 Type Vll, so need a smaller one, lol

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.

[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.

[Das Boot]

Great job.

[Das Boot]

[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?

[He Who Shall Not Be Named]

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

[biggsgolf]

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

[biggsgolf]

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]

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

[redboat219]

Hi Biggsgolf.

Just want to ask your about your KILO WTC. AFAIK, you're the only one who has used the RCshipyard WTC. How is the motor output shaft sealed?

[biggsgolf]

Hi, its a shaft seal installed from inside of endcap.

[redboat219]

Hi, its a shaft seal installed from inside of endcap.

Shouldn't it be on the outside of the endcap with the open face of the seal to the water so that as the sub goes deeper increasing water pressure presses down on the seal causing to seal better ?

[biggsgolf]

I hear you on that, I believe the motor face creates a union with it where it will not lose the pressure seal.