Sachs 125A vs. 125B

[peter kane]

Can someone tell me what is the great difference between the A & B motors.  I found the Penton 125cc Mud Lark listed as the 3rd of "Ten Worst Dirt Bikes of All Time" :-( and attributed it to the B engine.  Is/was there that much of a difference in performance/displacement?
(See:  http://www.off-road.com/dirtbike/feature/2003_06/worstbikes.html )

And, has anybody ever done business with Susanne Hammer in Germany?
(See:  http://www.motorrad-klassiker-ersatzteile.de/html_eng/154.htm )



Peter Kane
V3442
[email protected]

[Tony Price]

The problems with the Mud lark's popularity had nothing to do with the B motors.

The B motors hit the shores with the Mid 72 model Berkshires and Six Days.  The major difference between the two motors is that the A motor has a heavier crank which is also rebuildable.  This gives the A motor better low end response due to the additional weight of the crank.  

In my opinion, the A motor is the motor of choice for the woods, although the B motor is a nice power plant in it's own right for what it was built to do in the frames it came in.  The A motor also came in both 5 speed and 6 speed, depending on what year the bike was.

The Hammers are good folks who will give you a fair deal.  There is somewhat of a language barrier and the overseas shipping can be a pain due to the time it takes.  I would not be afraid to order anything from them, and they have some hard to find parts if your looking in the U.S.

Tony

[Lew Mayer]

Just to add to what Tony said, the A motors with a cast iron barrel were even better for trials ,I believe, due to milder porting,which provided more torque.

Lew Mayer