[GBC] Ballkirk Wheel

[PDK151]

Am going to make thia.

[PDK151]

Well done.

[Lego_GBC_NL]

On 3/24/2017 at 5:12 PM, doug72 said:

Progress and success:

Both rotating arms now built and linked together.
Friction device for the differential is now working well but found that if too tight then the wheel jerks when retarding arm releases.
The optimum tension seeems to be to allow friction wheel to rotate at the same rotation speed of the Wheel lift meaning the internal geasrs in the differential do not move and diff. rotates a one unit.
Friction device consist of a large 32mm pulley with 2mm elastic cord in the groove around it for 180 degs. - cord tension tension is adjustable.
Housing for this friction wheel has to be robust.

Although it is possible to have a single motor system I have opted to use a two motor system as this allows the trip drum timing to be adjusted as found it absorbes too much powewr from the Wheel lift drive motor

Next step is to build the ball gondolas, once parts on order from Lego arrive.

@doug72 it's been more than 9 years since you posted your last video here on Eurobricks showing your progress on the mechanical Ballkirk Wheel LEGO GBC module designed by Bram Fokke.
Don't know if you're still around on Eurobricks and if you ever finished your mechanical version, but I just posted a video on my YouTube channel to share the mechanical version I've been working on over the past few weeks.
It's based on the awesome work already done by you back in 2017, a big thanks for that!