The “late” Welkin is was fitted with more powerfull merlin engines 113/114 instead of the Merlin 72/73 in the main production version. So the top speed went up from 620 kmh to 640kmh
Could be slight engine difference. Merlin 72/73 for one and Merlin 76/77 for the other.
Both were fitted to Welkins.
I think the earlier 72/73 combo was slightly more powerful overall - being based on the Spitfire Mk.VII and Mk.VIII/Mk.IX’s respective Merlin 64 and Merlin 63 but with a reverse coolant flow. While the 76/77 was better optimised at altitude, with the 77 also being used in the Spitfire PR Mk.X
Merlin 64, 73 and 77 were versions of the respective 63/72/76 with a system to provide cockpit pressurisation on these versions of Spitfire, and Welkin.
Ed: Huzar shows the last engine was the even further advanced Merlin 113/114, and that appears to be what is modelled on the late one shown in the devblog video
@Smin1080p_WT is there any chance that the next devblog plane, the dev can include a picture from the planes nose (front prespective)? Pls pls pls, it will look so awsome!!!
Like this???