LOL! Sorry for my bad Russian, but I'll blame Google translator for this
Thanks for the info and material. I'll try to understand something from it. If I cannot find any data for skis, then we need to make a guess. Maybe something like 5-10km/h slower than plane with wheels.
This conflict between type 5 & 6 has been my other concern. Some sources claim that type 6 was very small (about 60 planes) and it had a third gun. But I guess this is wrong, like the skvorez's link indicated. I was thinking this with Saqson that what kind of variants would be good. We cannot mix fixed skis with retractable gears, so ski planes need their own fmd file and "slot".
I was thinking something like this:
Type 5 early: Forward sliding canopy, OP-1 tube sight, M-25 engine, 2x ShKAS, (optional weapons: 2x PV-1 guns, 2x50kg bombs, 2x100kg bombs)
Type 5 late or type 6: Fixed open canopy, PAK-1 sight, M-25A engine, 2x ShKAS, (optional weapons: 2x50kg bombs, 2x100kg bombs, 6x rockets)
Own ski version for both. First with skis without extra covers and second with ski covers as seen in captured IR-101. Does this sound correct & realistic?
I'll spare everyone from headache and don't translate this