[WIP] Greyhound - 4WD RC Buggy with BuWizz 2 - Redesigned wheel hubs

[Didumos69]

3 hours ago, AFOLegofan66 said:

@Didumos69 that was some teaser...the tension is killing me!!

I spent 6 hours on the instructions today. I'm halfway done. 350 photos sofar.

1 hour ago, kbalage said:

'm sure you mentioned already so sorry for asking again, you make the renders with Stud.io?

Yes, I use Stud.io 2.0.

1 hour ago, pagicence said:

@Didumos69 the link to Stud.io file is the LDraw password protected zip file.

I don't know. I made the LDraw file by exporting it to LDraw in Stud.io. I don't use LDraw myself.

EDIT: I made a few small updates to the files, based on some differences with my real life build.

Edited November 15, 2018 by Didumos69

[gregorski904]

Porsche rims and RC tyres

[amorti]

On 11/9/2018 at 4:02 PM, agrof said:

Nice render!

Isn't the half blue pin connection inside of the  suspension arm illegal build though (no way to build or separate without stretching the part)? I liked the first solution better, which is stronger?

What kind of animal must I be to look at that and wonder, not whether you'll hurt the wishbone by bending it like 0.2 studs, but whether it would be stronger I'd you put a normal black pin between the two 5L liftarms, and pulled the wishbone open around that...?

Sorry for zombie quote.

Props going out to didumos. Outstanding work, genuine top drawer stuff. The videos of it whizzing about look like a real RC buggy, it's just amazing

[SNIPE]

Maybe the steering pivot would be even better with the mini turntables right inside of the rims from the 42110 land rover.

Just a quick thought, I havn't read the whole topic so might be missng something.

[agrof]

11 hours ago, amorti said:

What kind of animal must I be to look at that and wonder, not whether you'll hurt the wishbone by bending it like 0.2 studs, but whether it would be stronger I'd you put a normal black pin between the two 5L liftarms, and pulled the wishbone open around that...?

Sorry for zombie quote.

It is not about hurting the parts, it was only some questions, all were discussed afterwards, literally on the same page. (BTW, I don't find any reference for the second part of your sentence, with the normal black pin...)

This is the normal way of discussion and development, so we both can learn and share experiences. We use this common practice in Eurobricks, especially with @Didumos69 we have some fruitful history.

Seeing your comment, I think You are not familiar with legal and illegal connections, what is the background of these terms, and in what context it was used here. No offense, but please read the whole story first, before grabbing a random quote and jump into conclusions.

Sorry if I misinterpreted, might be, it is early morning here.

Edited March 2, 2020 by agrof

[amorti]

It's a little misinterpretation ;)

My meaning was: didumos is, where possible, Mr by the book and loves a pythagorean triple.

Whereas, from everything I read you consider yourself not averse to an illegal connection (and I'm only assuming also building technique). So you make a joke of stretching the wishbone (which anyway is a softer plastic) by 0.2, maybe to tease didumos.

But me... I'm thinking, hey, you could probably stick a black pin right in the middle and just bend the wishbone over it. So, what a barbarian I must be...

Apologies if any upset caused, hope it's clearer.

Edited March 2, 2020 by amorti
Clarity

[agrof]

Absolutely, thanks for taking the effort! 

No upset here, also had my coffee, everything is much smoother now.

Edited March 2, 2020 by agrof

[amorti]

On 3/1/2020 at 8:44 PM, amorti said:

What kind of animal must I be to look at that and wonder, not whether you'll hurt the wishbone by bending it like 0.2 studs, but whether it would be stronger I'd you put a normal black pin between the two 5L liftarms, and pulled the wishbone open around that...?

For anyone who's willing to illegally stretch their wishbones, I can report that this solution does give a stronger steering linkage.

Edited April 8, 2020 by amorti

[Odinkuijpers]

@Didumos69 I finally got around to building your Greyhound 4x4 buggy from the digital model, but can't find out what to do with the 6 rubber bands on the ground beneath the model, could you help?

[Odinkuijpers]

Another question, how have you kept the increased resistance created by the heavy duty turntable hubs to a minimum? My model gained quite some speed when I switched to regular wheelhubs...

[amorti]

The large hubs are about reducing free play, and they are very good at that. They do get tight with use though, because they grind and make plastic dust. You can keep them free by adding silicon grease between the halves.

[Odinkuijpers]

1 hour ago, amorti said:

The large hubs are about reducing free play, and they are very good at that. They do get tight with use though, because they grind and make plastic dust. You can keep them free by adding silicon grease between the halves.

Thx for the tip about the hubs! Do you maybe know anything about the installation of all the elastic bands?

[amorti]

I think it's an idea from a previous version. In the end version there are belt tyres around the rear swingarms to steady them a little.

[Odinkuijpers]

1 hour ago, amorti said:

I think it's an idea from a previous version. In the end version there are belt tyres around the rear swingarms to steady them a little.

Thx

[Odinkuijpers]

I must say, now that it's complete, what an incredibly complex design!

Took hours to take it apart yeah section of the digital model, and hours to put it together in real life.

Adding parts of the bodywork to the main chassis in the right order so I didn't have to bend/stretch parts was the biggest challenge!

It required lots of taking apart and rebuilding! What a design!

All I need now is Buwizz...

Thanks @Didumos69

Edited March 3, 2021 by Odinkuijpers

[legomen]

My implementation of Greyhound 4x4. With standard Lego battery box and 2 SBricks.

 

[bruh]

Nice! Looks great!

[legomen]

More pictures with Lego battery box placing. I needed to redesign whole back end of a chassis in order to make space for Lego 8881 battery. V8 motor shifted more to the back and M motor connection completely redesigned. Battery box is fixed in place with two pins and relative easily removed from the car. Still looking for new springs:)

https://photos.app.goo.gl/tPvpn1i5pYFmEdwq6

PS: Probably PTC resistor would need to be removed from the battery box.

[legomen]

On 10/3/2024 at 8:19 AM, legomen said:

PS: Probably PTC resistor would need to be removed from the battery box.

Greyhound can be driven with single Lego battery box (Eneloop Pro batteries installed), but PTC resistor must be shorted, although lacking torque on wheels. We really need better L motors:)

 

Edited October 11, 2024 by legomen