* Ariels For Off-Road Adventures: Steve Wilson is getting his Ariel Red Hunter ready to travel around Africa, so he meets up with some high-mileage Ariel riders to seek out their advice

* Ariel Leader Rebuild: It’s been on and off for years, this rebuild. Rod Ker now takes up the spanners and attempts to get the RC Leader back into one piece

* BSA Star Twin: One of Bert Hopwood’s best engines, says Frank Westworth, after enjoying a day with a 1951 BSA pre-unit 500 twin A7

* Greeves Invacar: One of the weirder machines to come out of the Thundersley concern; a 197cc Villiers-powered three-wheeler

* Harley-Davidson V4 Nova: Never heard of it? That’s because it barely made it off the drawing board. Here’s the story of the Harley which never was, plus a stroll around the Milwaukee Museum

* Royal Enfield EFI UCE: Finally, the UK version of the unit construction, fuel-injection Bullet breaks cover. And we had the first ride on it, many months ago!

* Triumph 2/1: This 1934 Triumph 250cc twin-port single was built in 1934, and has been with one owner since 1959

* Triumph Bonneville Tuning: This episode looks at improving the bars, tanks, seats and bodywork on modern Hinckley Bonnies

* Vincent Comet: The start of one of those arguments which will run and run: Andy Bone reckons Vincent’s 500 single is the ultimate classic. Discuss...

Plus: Humbernut gets to grips with a steering damper, details of free training for returning riders, a better brake for T140 Bonnies, PUB goes to the Brough Rally, Dave Minton is tyred out and Frank Westworth tackles some (what should have been) straightforward routine maintenance tasks in The Shed...