(09 Jan 2015, 6:55 pm)Malarkey wrote Even if the Red Arrows did gain Investment this year, I would much rather see 6001-6007 go on the X21 and 3943/6049 to 6055 being utilised on the X30/X31 depending on the PVRs of these Services, I think the X21 is 7 iirc.

Service X21s PVR is 7.

I'm unsure on the PVR of the X30/X31, I think it might be 5.

But if you work out the length (in time) of the route from Newcastle to Lanchester, and back, you can divide the total time up by 30 (the frequency) to find out how many vehicles are required.

Stanley to Newcastle is roughly 40 minutes, and I think it's something like 30 to Lanchester, so a full run from A to B may be around 70 minutes...70+70 comes to 140. Round it up to include turn-around times, you get 150. 150 divided by 30 = 5.