[Williams FW13B]

Ah yes before Camel extended sponsorship

 

[Red Bull RB6 '10]

Another great image Sauro! Love it!

[Red Bull RB4 '08]

EXCELLENT Images  - love em!

[Williams FW20]

On 8/10/2019 at 4:34 PM, V6DINO said:

There has never been officially existed to "B" version ... During a whole season of the evolution of the normal, there is no race where the car is the adoption of any abbreviation.
For me it is important to follow official information, news reports are not news.

I do remember an autosport report that stated it as an FW20B - I cant remember if it was raced or not to be honest but 20B was used in post 1998 season or pre-1999 season testing  prior to the FW21's launch.

[Williams FW20]

Here is the FW20B with a longer wheelbase than what the FW20 had. New larger Barge boards, angled front wing/nose legs - Plus revised livery.

[Williams FW20]

There was an FW20B also which had an extended wheelbase - plus it featured a more pleasant to the eye Winfield  livery - a simple wau to spot the FW20B is the front wing nose legs are at an angle and not straight.

[Williams FW14]

On 1/16/2019 at 11:51 AM, DM1 said:

WILLIAMS FW14 (1991) US and Brazilian GP

white engine cover during first 2 GPs of the 1991 season, later the yellow one

yes before Camel extended there sponsorship

[Williams FW16B]

there was also a FW16C  IN 1994-95 Winter testing prior to the FW17s launch  - best way to identify the FW16C Is its front wing had red end plates with segafrendo sponsorship

[Williams FW15C]

On 1/17/2019 at 10:53 PM, V6DINO said:

Never heard...

CAN YOU DO THIS ONE? IT WAS BASICALLY A FW15C WITH NEW 94 ENGINE AND ROTHMANS COLOURS.... Ooops sorry for caps!

 

[Williams FW11B]

On 2/1/2019 at 3:19 PM, V6DINO said:

I have never heard of an FW11C .... Do you invent the abbreviations?

The fw11c was the test car for the Judd Engine and cam into existance when honda jumped ship and williams had to rusgh and find a new engine - they opted for Judd and had to make drastic mods to mfit it to the 11b chassis - hence FW11C

[Williams FW12]

On 2/1/2019 at 3:17 PM, V6DINO said:

I've never heard of a FW12R ...

The FW12R was also known as the FW12B (to keep with tradition of b spec cars etc.