Get the timing phased 90 degrees out and let people wonder where the V sound is coming from.
It was seen at Montlhery in 2011. This is translated from Z'humorist:
The previous year, at the same place or almost, was exposed a strange bitza ("Bizarre, I said: bizarre?") So a bitza flat-twin whose engine was borrowed from the French army. This year, it is also French who motorizes this V-twin baptized Lagregus and where one recognizes pieces coming from Motobécane. To have more information and to know how it worked, you had to ask "Grég". Solicited with loud cries, the cantonade could not join Grégoire Reboul who ranked 5th in the Concours d'elegance (I will never make "look") and I stayed on my hunger. See you in 2012 maybe ... (Postscript: Since I wrote this, I found the site where Gregory tells the whole story of its creation, but I do not know where it is! ).