General Part Discussion

[Ngoc Nguyen]

18z and 14z gears coming woohooo

[aeh5040]

19 minutes ago, Ngoc Nguyen said:

18z and 14z gears coming woohooo

Not convinced but I hope you're right!! 

5 new gears in one year would be extraordinary!

Edited 2 hours ago by aeh5040

[dhc6twinotter]

I think that gear is a recolored 12T gear.   Maybe new 14T gear, but I dunno. Maybe I'm wrong.  [EDIT:] The more I look at it, the more I think it might, indeed, be two new gears.

RacingBricks video has a pretty clear shot of a gearbox prototype.  Looks like each drum is only used to engage one gear, except one of the center drums engages two gears.  I'm not sure what that 2nd gear would be used for, except maybe reverse, but I think R-N-D is selected with the gearshift between the seats.  There appears to be two new DBG sequencer piece as well.

Edited 2 hours ago by dhc6twinotter

[Stereo]

Looking at the prototypes I think they originally had something more complicated with 3 types of shift drum in order to use existing gear ratios.  Also the two sides' drums are engaged 1:1 using knob gears, and the shift indicator print is evenly spaced on that same axle so it's some pattern of 9 positions directly encoded by the drums (one every 40 degrees).  By adding a ratio between 16:16 and 20:12 they can run a simpler pattern, I think the drums still need a weird axle offset, which now that I'm looking for it, the yellow axle connectors on the yellow drum side do look to be different after passing through 2 yellow drums.

Edited 1 hour ago by Stereo