"Heavy cavalry in the late 17th Century" Topic

I looking to build all those Wargames Factory WSS cavalry I have for use in my late 17th century project. Ultimately I'll have generic enough troops for the Great Turkish, War Venetian Conquest of Greece and the War of the League of Augsburg. Heavy cavalry are all called either Cuirassier or just Horse. So were there true Cuirassiers with ¾ armor much like those of the Thirty Years War period or were these just restricted to the Austrians during the Turkish War? Did all those pesky little German states actually field armored horsemen (helmet, breast and back plate) or was it just a title and the Horse were unarmored? Did some units just wear the helmet but were unarmored, or had the breast plate and possibly the back plate worn under their coats?
Thanks,
Andrew

No units of 3/4 armoured cuirassiers in the Imperial army post-1648, the Kürassiere had buffcoat, back and breast, Zischägge style helmet and the odd bridle gauntlet when fully equipped. The only place I've seen 3/4-armours mentioned for entire units rathert han the odd individual post-1648 are the old DBR army lists.

Some examples from various sources of Imperial cavalry in the 1660s & 1670's

A painting of the battle of Szent Gotthard 1664 shows the Imperial cuirassiers mostly in buffcoat, breast and backplates and helmets. A few units have only buff coat and helmet but it is not entirely clear if these are Imperials or allies. The wing with the majority of the allies including the French is shown only in buff coats and hats.
A few units in damaged sections have buffcoats but the headgear could be either helmet or hat. (But units with back and breast are always shown with helmet as well)

An eyewitness described the cavalry in the Imperial army mustering at Eger in 1673 as all having buffcoats, breast and backplates as well as helmets.

The Brandenburg cavalry was supposed to have armour until the 1680's but it is unclear if the helmet was worn when fighting "western" enemies. Armour use stopped in 1686 when the troops sent to Hungary were no longer required to use it.

Daniel, could you share this painting of the battle of Szent Gotthard?

No, it is reproduced in a way that is too large to fit my scanner while the dark patina and the damage makes it difficult to photograph without proper equipment.

However it is reproduced in this book
link
The original is kept in Schloss Obermurau and there does not seem to be any online photos of it.