1919 AJS 750cc V Twin Restoration

[olderdan]

My original HP figure was a typo, the official one is 6HP.

If the crank assy is a flimsy affair how about the barrels and heads held down by a stirrup with two bolts each and a bicycle type rim brake on the front.

[tonyfoale]

My original HP figure was a typo, the official one is 6HP.

If the crank assy is a flimsy affair how about the barrels and heads held down by a stirrup with two bolts each and a bicycle type rim brake on the front.

Be careful with that much power.

I think it was Panther which had extra bosses cast under the main bearings with a groove in. Then large U bolts went under the bosses and fitted in the grooves. The legs of the U bolts went up into the head in a normal fashion. It sounds crude and it was, but it meant that the combustion forces were taken all the way down to under the main bearings, so you were not trying to tear the crankcase apart like you do with most engines. So it was not quite the crazy idea that it sounds.