porting duration of a bultaco pursang 250cc eng. 1975

Porting duration of a bultaco pursang 250cc eng. 1975 full#

Stick it anywhere in the middle of thickly wooded terrain, where tight, twisty trails abound.throw in a couple of rocky creek beds, logs across the trail.you name it. But it shines in particular types of enduros in certain portions of the country. So what have we here? Is the Alpina an enduro machine, a trials bike, or what? In a sense it’s an enduro motorcycle, equipped with many of the necessary features to compete in an average enduro. Couple these with Pursang steering crowns and upper forks-and the Sherpa T/Alpina lower fork legs with the forward offset axle-and it adds up to quite a combination. That’s because the Sherpa T basics are still here as far as frame geometry goes. And yet, the machine has not lost one iota of its exceptional tight trail trickery and sure-footedness it’s still every bit the mountain goat that it’s always been. The engine position change and longer swinging arm also add much to high-speed stability and straight-line tracking, an area in which the Alpina needed some attention. This isn’t too shabby considering that the Alpina’s rear suspension is considered rather conventional. This, coupled with somewhat revised five-way adjustable Betor rear shocks, adds up to roughly 4.75 in. They also lengthened the swinging arm-which is also chrome moly-an extra inch behind the lower shock mount, changing the axle location.

Porting duration of a bultaco pursang 250cc eng. 1975 full#

The 1975 tubing is now full chrome moly, and the engine’s location in the frame is one inch farther back than last year. Now that it’s a genuine 350, we wanted to see what two years of development has done to one of our favorite off-road motorcycles.īultaco has made several frame changes since the bike’s inception and they haven’t waivered from the tradition this time around. It’s been more than two years since a 350 Alpina test has appeared on these pages since that time the bike has grown from 326 to 348cc.

They weren’t bad motorcycles, just limited in what they could do and not nearly what the Alps have grown into today.Īt one time a buyer had a choice between four different displacements if he or she were looking at an Alp that choice has now been narrowed to two, the 250 and 350. The first models were really nothing more than Sherpa T trials machines with larger tanks, seats and lights installed. If you can go back a few years and remember the very first Alpinas, you’ll recall how that wasn’t quite the case then. The Alp is one of those motorcycles that can be put to several tasks, doing each with varying degrees of splendor. This is where the Alpina (affectionately called the “Alp” by the hard-core Bultaco freaks), differs. The machines are designed precisely for that use.nothing else. Senor Bulto is in the habit of building motorcycles for a very specific purpose: like trials, motocross or enduros. If that sounds like a strange statement, let us explain. Senor Bulto’s Compromise Motorcycle.īULTACO’S ALPINA MODELS are peculiar in a way, peculiar because they are Bultacos. Mountain Goat, Woods Wizard, Incredible Fun.