The intention is to dyno the chair asap...I've got the bottom end assembled, still have to check valves have clearances, paint barrels, have ordered fresh wire circlips as the several new sets I had were only loose fits!! a number of other loose ends too, so wont be this month sadly.
The motor has the "heavy" early type lj crank, a 357 cam, big valves and med comp light BSA pistons. The inlet ports on the head are asymetric, so my engineers making manifolds as the top studs are mighty close to the ports. I'm hoping we'll have a pair of 10TT9 carbs and on alcohol although purely to keep the running temperatures down as chairs work fairly hard. Don't know how well it'll run but its going to look fabulous wink2
I'd been working in Oz but am now back home so its progressing again...
I'm always intrigued by dyno numbers as they appear to be mainly useful to see how the motor creates power rather than the numbers themselves which seem to vary dramatically from dyno to dyno. My old Norton atlas race bike which was claimed to put out 49 hp stock in road trim, in full race trim on race gas put out 49hp on a dyno after fettling... yet we keep seeing A10;s that are claimed to put out 33 -45 hp based on trim, putting out 22 to 28 hp. I appreciate the rear wheel vs crank argument, but I know my atlas wasnt twice as powerful as an A10...
I'll see if I can find a copy of the atlas dyno...
Sorry Richard, I meant Rocket racers chair.Yes those 400's go, I had a 360 years ago. My XT is awaiting time and money. I threw points & condenser in a while back. 1st kick it backfired and I had 3 days off work !
Cheers