8880-Mode: RWD-AWD-selector, sliding seats, 2-mode 4WS

[Kumbbl]

Hi,

here i have posted the summaries of the MODS for sliding seats and 2-mode 4W-steering: http://www.eurobrick...showtopic=79397

I wrote: "...I can imagine only one more functional feature-MOD: switchable 4WD and RWD..."... well, here we go:

Now one can switch by a lever between All-wheel-drive (AWD as the standard 8880) and just rear-wheel drive (RWD, new). As the following pictures show this complicates the already complicated drive train of the 8880 but it works very well and moving the car around still can drive high speed pistons of the first gear without vibrations.

The full MOD can be applied quite easy from the underneath...

Here you see the new drivertrain with the new driving-ring which switches between AWD and RWD...

The new driving-ring plus two clutches are installed directly below the 4-speed-gearbox shifted by 1 hole which lets rotate both levels of 16th gears fully indenpendent but i assume between two gears of both levels there is just a distance of about 0,05 mm! but it works absolutely correct and without any friction...

The next picture describes the function in detail:

One remark: The optimized and most realistic implementation would not block the FWD in RWD-mode but would instead connect with another driving ring the rear drive hard with the center differential - but this would need a quite complex linkage between two driving-rings underneath the floor and this is more or less impossible with this studded construction... therefore i have decided to implement the RWD so it works but lacks somehow realism compared to real life implementations...

One side-effect of my solution is: in RWD the complete drivetrain rotation with about half speed compared to AWD (this comes from the center differential and its blocked front input... i call it a feature instead a disadvantage because so the active RWD-mode is visible at a glance... ;-)

the next picture shows a side-view:

you see the selector need one short beam underneath but with some slopes and in black this is quite "invisible"... full contracted suspension has still enough ground clearance...

Full summary: now I'm finished with my functional moding of the supercar icon 8880: It has now this RWD/AWD-mode-selector, sliding seats by a lever and a 2-mode 4W-steering-system in addition to a chain-free V8-engine drive which allows full highspeed pistons (3 times faster than standard 8880)...

All these modes together fit very will into the 8880 so the overall construction and character is untouched and preserved.

These three MODs uses 27 gears more so now the 8880 uses 78 gears which is a "fair" amount, even in comparison to current modern studdless state of the art supercars i would assume ;-)

At the end two questions to all lovers of the 8880:

- do you think these are sensful features which add value to the car?

- do you have ideas (or already pictures) for a more elaborated bodywork?

best regards

[20feet]

Quote

- do you have ideas (or already pictures) for a more elaborated bodywork?

I purchased an 8880 a couple years ago and tinker with it every now and then.  I hope to incorporate the mods above, but am most interested in adding a working hood and doors (without using newer pieces, and preserving the original look as much as possible).  I'd love to see a more experienced builder's take on these mods.

Not to take anything away from the original set, or Kumbbl's excellent mods, but I'd say a model car can hardly be called "full featured" if it doesn't have working doors!

Cheers