[MOC] TT-S14 Trial Crawler

[Stari89]

Hi!

This is my 14th trial truck / crawler. All-wheel drive and steering, 2XL motors for propulsion, double drive shafts - one for left/right pair of wheels. M motor for steering, live axles, fake flat-4 engine. By removing red pins, body can be detached (giving access to the battery) and replaced with another. Body features openable gull-wing door and front hood.

Performance is so-so due to instable rear wheel steering.

More images here:

http://www.brickshel...ry.cgi?f=565829

Cheers!

[JJ2]

Very interesting drive concept, how did the chains hold up.

[TheMindGarage]

Very interesting drivetrain - how well does it perform when turning?

[2LegoOrNot2Lego...]

Nice build, indeed a very interesting drivetrain...cool...! :thumbup: I also wonder how the chains are holding up...

The rear part of the body work really appeals to me, excellent! For me the rear view mirrors are way to big, but at least they give the driver more then enough notice of what is going on behind him... :laugh:

Edited September 3, 2016 by 2LegoOrNot2Lego...

[agrof]

I join to the club regarding the chain question. Are they used for the steering, right?

I assume, as it is the 14th (!) crawler of You, there must be some know-how (f.e.: the double cardan tramsmission to the axles).

By the way, excellent bodywork! :thumbup:

[LegoDego]

Very nice truck and interesting drivetrain. I would add a differential to distibute the torque of two motors beeween the two shafts (maybe it will work better?).

P.S. And this little flat engine too small for this car but so cute

Edited September 3, 2016 by LegoDego

[Stari89]

Correct, chain is used for steering. It was the most compact reduction of M motor's speed I was able to incorporate. Unfortunately it creates a lot of slack. Coupled with very short steering arm lever length, it sometimes causes rear wheels to steer uncontrollably. It is very likely I will redo front and rear axles.

Cheers!