Do you like to dream and, may be, transform
them in reality ? 

Who is interested in my “ADI” can find here some information.  You can contact me for advices, designs and photos.



I hope that some details can lead to new realizations.
This strange recumbent is born to be faster than ADY, now of ADY-2, and in “ ADI (Here I am) “ you can find the reason for this choice.
In “ ADY  Realization (text) “ I give to home builders some informations that I won't repeat here.  
I am not responsible for problems deriving by realizations built folowing my drawings.

Because I am not able to build light, both by my mental logic and by the fact that I use brazed iron, speed had to be find somewhere else.
The drive wheel had to be big enough, than the choice was a 26" , and with a short chain to have a minimal power loss.  The only solution was a delta with the drive wheel in front.
The configuration had to be a “Low racer” and compact.  Because I have a single usable hand to drive, I can't use the steering method of “ Python, Flevo and Speculoos  “  that change the inclination of the front wheel but were the direction is affected by legs alternate force on the pedals. 
The only solution was a rear steering and a 20" wheels keeps dimensions small.
Because I am 170 cm tall a 26" wheel make impossible to put the bottom bracket in a usable position.   “ Vacuum Velocipede “ had he solution in its original realization, linear cranks.
I used pedals as in the little boy cars, with a high hinge oscillating lever and links to cranks.  In this way I can have pedals in a low position and at the correct distance for my short legs.
Obviously I had a lot of concern about this way of moving feet till I tested really in the street. 
Also about the rear steering I was full of doubt and I had to rebuild three times the rear part to have a correct one.
To increase stability because the "trail" must be kept small to avoid oversteering and this cause an excessive sensibility arround central position (driving stright), the solution is a cam that  force strigth direction but allows steering . See ADI (steering) .
With the 26" wheels was possible to use standard derailer and components.   Gears are 30-42-52 e 11/34  ( 9 ).
The use of fast tires, forward Hutchinson Top Slick, rear Schwalbe Marathon Racer, and of: derailers Shimano Ultegra FD-6503 / Deore RD-M772 , disk brake Shimano M465 and speed trigger shifter ST-M960 , has  completed the project.

                                                                                                                                                               Luciano  De Lorenzi
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