Sunday, June 7, 2009

Heavy Duty Automatic transmission

Alex Zorko ( and Ivan ( released again something new at LPEpower for big and heavy LEGO cars.

This time they came with an automatic transmision, or "Heavy Duty Automatic transmission 1.0" (HDA 1.0) as they have called it.

In its own authors' words,

"We're proud to present the FIRST heavy duty 3 speed automatic gearbox made out of lego. By automatic, we mean that it shifts by itself with the help of a torque sensor. The function of the gearbox is entirely mechanical and absolutely reliable.
It can handle big loads and big power. The breaking limit of the gearbox is the material itself, not the construction of the gearbox. This means, that the parts will break, before the gearbox encounters a mechanical failure.
The gearbox is designed to constantly deliver power to the output shaft. There are virtually no holes in the power delivery throughout the shifting range. The gearbox is already prepared to be custom tuned on request to the weight of the vehicle it powers. The input shaft was designed to spin counter-clockwise, the output shaft spins clockwise.
The gearbox is prepared to fit the LPEpower V8, but can be made to fit any engine or even lego power function motors. It was tested in the LPEpower Mustang test car."

Not that we really figure out how does it work, from the images/video made available, but we should understand the secret is also part of their business...

  • Lenght: 18 studs
  • Height: 9 studs
  • Width: 10 studs
  • Weight: 250 grams

Gear Ratios:
  • 1st speed 3,00:1
  • 2nd speed 1,66:1
  • 3rd speed 0,91:1

As for the characteristics, lets say it is not properly small neither light. So it won't fit on everyone's LEGO car...

The HDA 1.0 is selling ate LPE Power, for 75€.
I should say we have already seen these guys selling more expensive gadgets...

You may want to read about other LEGO TECHNIC automatic gearbox implementations, here.

1 comment:

santi said...

The do not publish their mechanism. But do you know if you can unbuild it if you buy it? or are the pieces "stuck" together? :)

Any one has bought it? I'm kind of curious!

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