dirt bike dave
Sponsoring Member
- May 3, 2000
- 5,348
- 3
Originally posted by dirt bike dave
On most bikes with the dual plug heads, one was a 'spare'. If you fouled the first plug, you just moved the plug wire to the second plug.
Originally posted by BigLou
Cool history lessons here! Rich-I can't see any of the pictures for Eric's patents. Are they there or is it my browser? Can't see them work or home.
My 73 CZ 380 has a dual plug/dual coil ignition. I'm fairly certain that the reason they did this was because the bike wasn't quite heavy enough without it. :confused:Originally posted by Rich Rohrich
But some of us built dual-plug heads that fired both plugs at once in an effort to reduce knock in high strung two-strokes. ;)
Originally posted by OnAnySunday
Yamaha's "Tourque Induction" system. although i cant remember if that was the oil injection or some other gimick.
Originally posted by dirt bike dave
Bultaco Fronteras had a tool pouch attached to the tank - don't know of any other bikes with that feature.
Piston port induction.Originally posted by yz250roost
Rich- what did they use before reed valves?...
There was only a port from the carb directly into the cylinder (no port into the crank). As the piston moved up it sucked fuel through the port from the carb and into the crank. As the piston moved back down it forced the fuel through transfer ports (just like today) and into the combustion chamber. Also, as the piston moved down the intake skirt blocked the port to the carb to prevent blow back of the fuel into the carb (like reeds do today).Originally posted by yz250roost
Interesting, so that means the piston had a "window" in it that allowed fuel to get into the crankcase and back up into the cylinder?
Originally posted by BillyWho
And of course the best one of all... I forget the name but the hat with the two split flaps on the back to give you that poser Mullet look.... I had several in various colors :aj:
VisoorVue! Those things were great! I've got one around here somewhere. If helmets still had snaps, I'd still be using it.Originally posted by holeshot
Helmet visors with little rear view mirrors on them (so you could see if someone was about to pass you). :confused:
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?