![reed valve for bultaco pursang reed valve for bultaco pursang](https://www.trialscentral.com/forums/uploads/profile/photo-thumb-10952.jpg)
One article showing the cringled exhasut manifold on a Bultaco Sherpa and stating that there are 280 workes but just 100 are really working and the wish there might come new models.Īdditional an articel about the Italian Montesa model 242 that got a separate gas tank which is lighter and more resistant, both published 1984 in July Issue 100. But found two additional articel about Bultaco. More of what might have been.ĭidn't knew that Montesa were too machined in Scotland. As with Bultaco, the Ossa factory ignored the UK development work and went their own path. With Keith Horsman they did cantlever as well as reed valve conversions in several capacities, one of which was a short stroke 310 engine which gave 285cc. The most radical was JR's bike which had no swingarm spindle so that the pivot could be moved right up to the sprocket and looks as though removing the clutch cover would be a real ordeal.Īs with the Bultaco UK importer taking ideas to the factory, there was a similar story with Ossa and the UK importer doing development and making improvements to the bike. There were also two 198B conversions, one of which is still alive and well, don't know about the other.
Reed valve for bultaco pursang mods#
The 40 converted bikes had the pivot moved forward and a different swingarm fitted but not all the frame mods of Vesty's last bike, they were based on the first incarnation. On Vesty's own bike the engine was raised at the back and tilted forwards to get the pivot as close as possible, the sump guard had to be reshaped to do this.
![reed valve for bultaco pursang reed valve for bultaco pursang](http://www.2040-motos.com/_content/cars/images/13/406013/001.jpg)
The gearbox plunger bolt head is also machined down. That allows the shortened pivoting mounting bracket to be moved even closer to the engine than if it metal wasn't removed, but it's millimeters at this point. Metal can be removed from the big mounting lug that takes the engine bolts but it wouldn't make any difference if it was 5 or 6 speed as it's the same on both. It isn't possible to machine anything off the back of the actual casing as you'd be straight through the case and into the gearbox. The 5 speed gearbox would possibly have given more lateral room for machining bits off for the new s/a pivot point?.