I've seen a Go Pro of Batch practising at Lynn. Probably a slick track as practice,but if I remember right,bends was around 40mph and 65 on the straight and before BV's new track . Lynn was the fastest track in the Prem.
Belle Vue - National Speedway Stadium: Track Length (m) TBC, Record set xx.xx by TBC on xx xxx xx. [Ave. Speed - xx.xxmph] Coventry - Brandon Stadium: Track Length (m) 301, Record set 57.6s by Chris Harris on 22nd May '09. [Ave. Speed - 46.76mph]
Kings Lynn - The Norfolk Arena: Track Length (m) 342, Record set 57.6s by Nicki Pedersen on 11th Sept '02. [Ave. Speed - 53.13mph]
Lakeside - Purfleet Stadium: Track Length (m) 256, Record set 56.8s by Andreas Jonsson on 30th May '08. [Ave. Speed - 40.33mph] Leicester - Beaumont Park: Track Length (m) 317, Record set 61.75s by Nicolai Klindt on 19th Mar '16. [Ave. Speed - 45.93mph]
Poole - Wimborne Road: Track Length (m) 299.1, Record set 56.91s by Antonio Lindback on 14th Jun '06. [Ave. Speed - 47.03mph] Swindon - Abbey Stadium: Track Length (m) 363, Record set 63.86s by Leigh Adams on 31st Aug '09. [Ave. Speed - 50.86mph] Wolverhampton - Monmore Green: Track Length (m) 264, Record set 53.45s by Darcy Ward on 10th Aug '15. [Ave. Speed - 44.19mph]