Efferman's Custom Parts

[Milan]

Ef, how would the turntable rotate?

[efferman]

there are eight holes for 3/4 pins in the bottom to avoid the rotation of the teeth ring and the teeths should fit to a 8 tooth gear. I will test some combinations when my order arrives me.

[doug72]

Doug, so you need a wheel like shown in your picture which fits on traintracks and has a diameter of 3 studs?

Yes to fit Lego straight tracks - see attached drawing.

21/12/15

Drawing ammended to both wheels to have cross hole - allows for alternative gearing to rotate wheels.

Edited December 21, 2015 by Doug72

[z3_2drive]

Hello, I've decided to start a new project, and it will use some of your custom parts. So far I have built a very simple, robust front axle using your wishbone pieces and I've got to say, it looks and works great! There is some friction on the lower suspension arm/bionicle joint, so I might shave them down slightly, but overall it seems strong and works as intended.

Pics:

Forgive me for the modified link, I couldn't fit a pin in there

I also bought two of the superleggera wheels. Excellent. The pin and axle holes will require some cleaning to fit them on, as expected. One wheel seems to wobble ever so slightly about its axis (an imperfect shape?) but I don't think it will be noticeable when driving.

Thanks for designing all these parts effe!

Edited December 21, 2015 by z3_2drive

[JJ2]

z3_2drive I can wait to see it!

[efferman]

Doug, why is the 16 tooth gear not a standard one?

Z3, That is a cool use of the parts. How is the stability of the superleggera?

[Pat-Ard]

@z3: why did you ruin the pneumatic cylinders? ;(

[doug72]

Doug, why is the 16 tooth gear not a standard one?

Efferman: Too thick - Its was to get the alignment between bevel gears correct.

Do you have a 16T double bevel gear design as that would solve it I think.

i.e. Double flange bogie wheel with 16T double bevel gear on same axle which would mesh with an idler 16T double bevel gear to drive the other bogie wheel.

That would prevent gears catching the track and allow vertical drive to connect on any axle.

Thanks for all the design work you do - you have really good ideas and solutions.

Doug

Edited December 21, 2015 by Doug72

[z3_2drive]

@JJ Yeah I hope this project turns out well!

@Effe I have yet to try it using only the axle hole, but using 3 point hubs it seems pretty strong and stable. I squeezed the outside of the wheel with my hand, there is some flex, but I don't think it'll matter on the road.

@Pat it hurt a little to do it, but I took them apart to place a hard spring inside, this allows the cylinder to simulate a combination of spring and dampening action, which my heavy/high speed models absolutely need in order to have a smooth, controlled ride. I cut the inlets/made the hole a little bigger to let air in and out with ease so it doesn't delay the up and down motion.

[Pat-Ard]

What a big sin ;)

[efferman]

19 wide planet axle

[2LegoOrNot2Lego...]

That is impressive!!! :thumbup: Next step would be to have similar design suitable for Tatra trucks!!!

[efferman]

Some parts have arrived

[doug72]

Re Double Flange wheels for cranes.

Have come up with a solution that uses standard 16T gear on same axle as wheel.

A 20T double bevel gear meshes with both 16T gears on wheel axles - offset by 1L higher, 12T thin bevel provided the drive to the bogie.

This prevents the 20T DB gear from fouling the track.

So only require track wheels with cross hole as per drawing without attached 16t gear. Groove profile to suit Lego Straight track 3288.

Thanks for your patience.

Doug

Edited December 22, 2015 by Doug72

[efferman]

done

[2LegoOrNot2Lego...]

Great additional parts again!!! Love the bucket!!!

[Karolius]

second revision of the extra large actuator

*pic 1

It has a moving range of 18 studs, an internal planetary 4 to 1 gearbox with integrated clutch. to save material i have made a crossaxle pistonrod. round 2x2 bricks will complete it. Unfortunately this solution allows only to push and not to pull. Fortunately mobile cranes dont need the pull function

*pic 2

i have ordered it and it will me arrive in roundabout 10 days.

*pic 3

Hi Efferman!

Love your work, and therefore I do have a small question, and a large favor to ask you. (And this is the only way I think )

Do you still have the drawings for the XL-actuator in inventor? I had loved to try to pull these drawings on my home made 3D-printer for personal use and interest. I am in need of a long actuator and will save a lot of time I think, if I got the drawing/files.

If you dont have them, or dont want to give them away, I understand that too of course.

[efferman]

i can give you the files but i think the XL actuator is not possible on home printers. the walls are much to thin and the support structures will possibly kill the inner tread.

[efferman]

Sorry for double post, but some parts have arrived

The turntable support works fine

The 19wide steering axle had a small but critical error in the wheelholders. The error is fixed now but unfortunately one has ordered the axle with the error.

[doug72]

Re Worm Gear case 3 x 3 x 3 complete gearbox for 8 and 24Z gears

Version 2 just received - cross holes a bit tight at first but by using a cross axle pin connector gently in and out to ease them the fit is OK.

Pin / plain axle holes required a little bit of cleaning.

Worm gear box can be mounted directly onto the face of M & L motors OK when a 24T gear used.

24T gear teeth catch XL motor casing if directly mounted - so a 1L spacer would be required.

OK when an 8T gear is used.

Just seen your post about the new turntatble - looks great with an easy connection to the centering turntable.

Edited December 24, 2015 by Doug72

[efferman]

very good to hear that the fit good now.

[Karolius]

i can give you the files but i think the XL actuator is not possible on home printers. the walls are much to thin and the support structures will possibly kill the inner tread.

Well I do think it is possible to pull of, or perhaps with some modifications . If not, it will still be worth a try.

Not sure how you will send the files. Dropbox or somethink? Or zip-files in e-mail?

My adress in case of the last option: karoliusnordlund@hotmail.com

[schor]

Very nice work efferman, I am new to this site and had no idea people were making custom parts for lego and selling them. Will take me a bit of time to get through this whole thread.

Thanks for sharing.

[tripletschiee]

The 19wide steering axle had a small but critical error in the wheelholders. The error is fixed now but unfortunately one has ordered the axle with the error.

So, Effe, this axle is just 2 studs too wide to use it in the Arocs or 8258?

Do I see that right?

[efferman]

The axle has the same width like the front axles on 42043