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[toesupwa]

After some months of work, I've nearly finished two home-made Z drives. 

Just the Kort nozzles to be added and the top gears to be added..

[portside II]

now they are really nice 
when do you start trials 
and most important when do you start mass production    .
daz

[BarryM]

What degree of rotation will you get?

Regards

Barry M

[toesupwa]

What degree of rotation will you get?

The props go round and round and round... 

The servo movement should give about 60 degrees either side of 0.. though i am looking in to a belt drive system from the servo to give something like 180+ degrees

[Timo2]

Hi Toesupwa

 Great skilled work, lot,s of thinking a head.  Love blueprints in old style code ( 1/64th  )

  Timo2

[longshanks]

Looking very good.

You've done a nice job with the kort nozzles as well. What diameter are they - to give a sense of scale.

Reference rotation are you aware of Action Electronics P96 Servomorph

http://www.action-electronics.co.uk/pdfs/P96.pdf

Regards
longshanks

[bogstandard]

That is lovely work you have done there Toesupwa, it is nice to see things being made, rather than bought in as a finished unit.

It gives a great feeling knowing that you have made it yourself, and even a greater feeling in knowing that what you have created is unique and exactly what you need, with no compromises required to get it to fit the model.

Well done

Bogs

[toesupwa]

You've done a nice job with the kort nozzles as well. What diameter are they - to give a sense of scale.

Reference rotation are you aware of Action Electronics P96 Servomorph

The props, with the tips turned off, are now 2 1/2" (65mm) Dia. making the Kort nozzles almost 3" (75mm) OD

I did a 'how to' on RC Groups when i did the Korts.. http://www.rcgroups.com/forums/showthread.php?t=1025555

I know of the P96 and there is something similar over in the USA that does the same thing. To get the servo / drive rotation to increase, i would need to convert the drives from the simple arm i have at the moment. That might come as a later development... 

[toesupwa]

.. and I end up with two working Z Drives..

The Traxxas gear for the top of the shaft had too thin a wall to tap out for a grub screw to hold it to the shaft, so i had to bore out the centre and make up an adapter plate...
Someone at Traxxas also thought that 15/64" (instead of 1/4"  ) was a sensible size for the shaft to the small gear...

[over_powered84]

I know of the P96 and there is something similar over in the USA that does the same thing. To get the servo / drive rotation to increase, i would need to convert the drives from the simple arm i have at the moment. That might come as a later development... 

How About A 3x 360 Degree Sail Winch For The Turning Ability?

[toesupwa]

Tonight, I've added the Kort's to the drives. 

[over_powered84]

Those Look Absolutely Tremendous Toesup

[derekwarner]

as bogstandard says........"That is lovely work you have done there Toesupwa, it is nice to see things being made, rather than bought in as a finished unit"

......and that in it self is a compliment from an engineering professional.......

......but I do not see the lubrication provision in the lower 90 degree 1:1 bevel gear set nor an understanding of the up shaft 90 degree X?:1 gear set which may be WIZZING around @ say 3000 RPM........ Derek

[toesupwa]

......but I do not see the lubrication provision in the lower 90 degree 1:1 bevel gear set nor an understanding of the up shaft 90 degree X?:1 gear set which may be WIZZING around @ say 3000 RPM........ Derek

The Graupner versions do not feature any provision for lubrication of the vertical shaft or the lower gearing in the bottom of the Z Drive.. just take them to pieces and add some more grease.

My versions will have the lower ends packed with grease as well as grease between the main down shaft (@ 1500 RPM at full throttle by the way) and the outer housing. I could add a grease nipple to the upper housing to get grease between the outer housing and the housing support though...