Efferman's Custom Parts

[Ploki]

for boxers you can use the lego piece

still they could use far less space

[efferman]

Ok

[efferman]

a single narrow fake cylinder

and the ribbed hose holder

[Epic Technic]

I was wondering what program do you use for making these models/pieces ?

[Ploki]

@efferman: wow, that looks kick-megablocks.

shipping is 5x price of cylinder. :s

Edited January 6, 2015 by Ploki

[efferman]

Autodesk Inventor 2011

[efferman]

I have made some parts for RC Servos in standard size.

the first one is a mounting frame for standard size RC servos. The output of the servo should be in line with the technic hole grid.

the next ones are adaptors for 25 or 24 teeth outputs. I hope the small teeths are printable.

[Matthewslegotechnics]

How to made the parts?

[Milan]

Member Efferman can made almost any part in CAD. People usually make wish-request here and then he post his design. After that you can order the specific part at the company that physically make them.

Edited January 12, 2015 by Milan

[nerdsforprez]

I have made some parts for RC Servos in standard size.

the first one is a mounting frame for standard size RC servos. The output of the servo should be in line with the technic hole grid.

the next ones are adaptors for 25 or 24 teeth outputs. I hope the small teeths are printable.

Wow, have people been trying to implement RC features (motors, receivers, etc) into Lego vehicles? I have heard of people using new power techniques to power PF motors (lipo, multiple battery boxes etc.) but I have not seen people actually using RC motors yet.

[T_Tank]

So by standard rc servo which servo did you use for refference something like a a savox sc-1257tg? usually some 1/10th servos have the output slightly closer or further from the edge but this is big news to me using a fully proportional servo in a lego build has always been a minor pain for me to figure how to do!

Think you could make a version of that can fit a HS-85MG micro servo?

and possibly some sort of mount for a 380 can size'd rc motor?? (I think most motors use 2 screw mounts that are 12mm apart or 14mm apart)

you might have to experiment with shapeways metal for a pinion to lego connector adapter so you could hook the motor to the drive train.

Speaking of drive train... lego axles are roughly 5mm right? We could probably use some sort of adapter to put 5mm id 9mm od 3mm thick rc bearings in place if someone wants to go nutty an put a 380 brushless motor in a lego model >>>

[madjelly]

RC servos return to center because of ECS. So I guess a person will need to source the whole system: servo, ecs, tx/rx, and motor. Probably will need weakest motor so the gears dont get stripped. And even then, how viable would it be without closed gearbox and lubrication.

Edited January 13, 2015 by madjelly

[T_Tank]

RC servos return to center because of ECS. So I guess a person will need to source the whole system: servo, ecs, tx/rx, and motor. Probably will need weakest motor so the gears dont get stripped. And even then, how viable would it be without closed gearbox and lubrication.

Rc servos return to center without a esc don't know what your talking about unless your talking about robotics grade ones that you need to program. A normal hobby grade servo returns to center and with your radio you can adjust the endpoints even if its fancy enough. Issue with lubrication isn't much there as you'd think they do make plenty of dry lubricant to avoid letting dirt grab a hold. As for weakest motors... do you understand hobby grade rc's much? Could throw in a 500kv outrunner motor and it have a very low rpm but it rock torque that blow xl motors away by a long shot or you go with a 5000kv inrunner which have low torque but very high rpm potential you can use either or if you build your model correctly.

If folks can have a 20mph 99% 3D printed rc car with brushless motor plastic printed gears an axles only using bearings an screws legos which are known for their near perfect uniform tollerances will hold just fine throw a little dry lube an she'll live!

Though I would say we need some wheel hubs that use bearings between the steering part an the hub part thats where the MOST friction is.

[madjelly]

Regarding the servo, I kind of got lost in my own thoughts . I meant to say that without a way to calibrate rc servo, it wont return to exact center of the specific model. I was thinking about wiring rc servo into LEGO receiver, but from what I understand, receiver won't be able to calibrate exact center to return to.

T_Tank, I agree with you on hubs that support bearings. But I guess at that point, it is better to get rc car .

[T_Tank]

rc cars are fun but making a rc car that you can lego together would be more fun even if its only going 20-25mph on a fairly light model.

Depend on the quality of the servo you can get just about prefect return to center though any play in the steering would make it a bit... tricky but thats what clever thinking with legos comes in!

[efferman]

Wow, have people been trying to implement RC features (motors, receivers, etc) into Lego vehicles? I have heard of people using new power techniques to power PF motors (lipo, multiple battery boxes etc.) but I have not seen people actually using RC motors yet.

The Servo which fits in the holder is 40,5 mm long and 20mm thick. Other servo sizes are no problem when i have the exakt dimensions.

[T_Tank]

The Servo which fits in the holder is 40,5 mm long and 20mm thick. Other servo sizes are no problem when i have the exakt dimensions.

Now thats fun to watch gave it a little to much gas in the turn I see there but the steering control with a servo I'm sure is so much better then any of the lego options avail.

as for the measurements for the hs-85mg servo https://www.servocity.com/html/hs-85mg__mighty_micro.html#.VLX8vivF8uk Thats the one place I can find the most complete set of dimensions for the servo

[T_Tank]

Bit of a bump/double post but had a idea

How would folks feel about a 5292 replica but with a removable motor (like 2 small screws hold the motor in place and possibly ball bearings on the output shafts to make it more efficient an possibly smoother running?

Might be possible to do with though the inside gear ratio might have to be changed to so we can have it properly printed out though that all depends on a few things.

The inside of the 5292 isn't all that complex from the looks of it besides figuring how to make the gears.

Maybe redesign the gears so they are in a 32 pitch since the tollerances would be more forgiving in 32pitch though the gear with the spur would need a finer pitch well least something we can find possibly 48 pitch or very unlikely 64 pitch.

[DamonMM2000]

a different adaptor with truck rim in the size of 8110 rims.

Screenshot 2014-01-26 19.49.30 von efferman auf Flickr

Those rims look awesome!

[Dafgek81]

Very nice looking rim setup, but where can I use it and what is going on with the centerpart off the hub.

And would it be usefull for the awesome Iveco truck from Lucio?

[efferman]

This was an early idea with planetary gear inside of the center piece. it was never printed

[Dafgek81]

Hello Efferman,

You have designed a american style truckrim for trucks like 8285 and 8258, but those where for the front axle, could you design one for the rear axles?

And if possible no visible axlehole on the outside, like the ones in real life.

Would like a rim like the one above, but without the central diif, but two part like the one you have designed already.

[madjelly]

Got a question about leaf springs. I assume the price on shapeways is for each, and not a pair. Is that correct?

[efferman]

These rims dafgek?

or from this post?

No, the price is for a pair. you get at every time what you see on the shapeways render

[Dafgek81]

Hello Efferman,

No I mean the one from your post on 26 january 2014, the one DamonMM2000 quoted on a view posts back.