maico 125 question

rmpilot
Profile picture for user rmpilot
Posts
776
Joined
4/8/2010
Location
Tomah, WI US
rmpilot
Edited Date/Time 1/27/2012 2:44am
i was looking at one on ebay and it looked to me like the intake was on the side of the crankcase. was i seeing that right?
|
rmpilot
Profile picture for user rmpilot
Posts
776
Joined
4/8/2010
Location
Tomah, WI US
rmpilot 3/29/2011 2:17pm
3/29/2011 2:17pm
how come i dont see that on more stuff? doesnt work as good?
PN27416
Profile picture for user PN27416
Posts
1018
Joined
6/12/2008
Location
Coopersburg, PA US
PN27416 3/30/2011 6:08am
3/30/2011 6:08am
Can-am did it on there 125's and 250's. Puch did to. It had its advantages by feeding the fuel and air right into the crank case. But once case reeds came along, I believe it made rotary intake obsolete. A disadvantage was the carb being far away from the valve and having the fuel/air mix to make a 90 degree turn. Some bikes had the carb mounted right by the rotary valve. But that stuck out some from the side of the engine and think this was kept to on/off road and street bikes where crash's were less frequent.
Rocket88
Profile picture for user Rocket88
Posts
521
Joined
4/1/2008
Location
Vista, CA US
Rocket88 3/30/2011 7:04am
3/30/2011 7:04am
Bridgestone motorcycles had the rotary valve too! Remember those?

The Shop

See All »
rmpilot
Profile picture for user rmpilot
Posts
776
Joined
4/8/2010
Location
Tomah, WI US
rmpilot 3/30/2011 7:44am
3/30/2011 7:44am
PN27416 wrote:
Can-am did it on there 125's and 250's. Puch did to. It had its advantages by feeding the fuel and air right into the crank case...
Can-am did it on there 125's and 250's. Puch did to. It had its advantages by feeding the fuel and air right into the crank case. But once case reeds came along, I believe it made rotary intake obsolete. A disadvantage was the carb being far away from the valve and having the fuel/air mix to make a 90 degree turn. Some bikes had the carb mounted right by the rotary valve. But that stuck out some from the side of the engine and think this was kept to on/off road and street bikes where crash's were less frequent.
ok thats making a lot more sense now
newmann
Profile picture for user newmann
Posts
24444
Joined
4/1/2008
Location
US
newmann 3/30/2011 7:54am
3/30/2011 7:54am
74-76 KX125 was rotary valved as well. Had that bike been introduced six months earlier, it might have been as popular as the Elsinore. Very good running bike for the time. Handled well too. Yamaha used a rotary valve engine in some of the early 80's OW works 125's.
PN27416
Profile picture for user PN27416
Posts
1018
Joined
6/12/2008
Location
Coopersburg, PA US
PN27416 3/30/2011 7:59am
3/30/2011 7:59am
Rocket88 wrote:
Bridgestone motorcycles had the rotary valve too! Remember those?
Me and my brother had a brigestone street bike way before we were old enough to drive. We would just ride it in fields.
xnationalwrench 3/30/2011 8:48am
3/30/2011 8:48am Edited Date/Time 3/30/2011 4:37pm
newmann wrote:
74-76 KX125 was rotary valved as well. Had that bike been introduced six months earlier, it might have been as popular as the Elsinore. Very good...
74-76 KX125 was rotary valved as well. Had that bike been introduced six months earlier, it might have been as popular as the Elsinore. Very good running bike for the time. Handled well too. Yamaha used a rotary valve engine in some of the early 80's OW works 125's.
Not to mention ther Kawasaki Greenstreak's in the early 70's (100cc & 238cc) And even before that Yamaha had a 80cc and 100cc enduro type bikes along with the orginal Mini-Enduro.
FreshTopEnd
Profile picture for user FreshTopEnd
Posts
12476
Joined
8/16/2006
Location
Sacramento, CA US
Fantasy
4254th
FreshTopEnd 3/30/2011 12:35pm
3/30/2011 12:35pm
Not to mention this World Champ bad boy. The bike that is.





Craze
Profile picture for user Craze
Posts
1410
Joined
4/1/2008
Location
Sin City, NV US
Craze 3/31/2011 1:07am
3/31/2011 1:07am Edited Date/Time 3/31/2011 1:08am
FreshTopEnd wrote:
Not to mention this World Champ bad boy. The bike that is. [img]https://www.ftemoto.com/MX/Primm/images/DSCN0011.jpg[/img] [img]https://www.ftemoto.com/MX/Primm/images/DSCN0012.jpg[/img]
Not to mention this World Champ bad boy. The bike that is.





The other is a "Word" Champ....LOL. If it was a Maico...it would be gone from there...I would suspect the grinning Bobby M !!!
robkinuk
Profile picture for user robkinuk
Posts
4202
Joined
5/16/2007
Location
Ashbourne GB
robkinuk 3/31/2011 5:36am
3/31/2011 5:36am
The Maico 125cc was slow, whatever you did to it, much slower than PUchs 125cc or Bultaco's plus they put a 125cc in a 400cc running chassis, so weight was an issue back then.
Cool if you can get hold of one as they have rarity value.
rmpilot
Profile picture for user rmpilot
Posts
776
Joined
4/8/2010
Location
Tomah, WI US
rmpilot 3/31/2011 7:46am
3/31/2011 7:46am
robkinuk wrote:
The Maico 125cc was slow, whatever you did to it, much slower than PUchs 125cc or Bultaco's plus they put a 125cc in a 400cc running...
The Maico 125cc was slow, whatever you did to it, much slower than PUchs 125cc or Bultaco's plus they put a 125cc in a 400cc running chassis, so weight was an issue back then.
Cool if you can get hold of one as they have rarity value.
lol im working with a 700-800 dollar budget. so, that eliminates the maico 490 that i really want which from what ive seen goes for at least 3 grand just for running.

Post a reply to: maico 125 question