saw miller Posted September 17, 2015 Report Share Posted September 17, 2015 Got out and played motocrosser on the sherpa for awhile today. Weather has cooled off and three trials coming up. Love this time of year! 6 Quote Link to comment Share on other sites More sharing options...
oldjohnno Posted November 8, 2015 Report Share Posted November 8, 2015 Bit of rock practice at the VMCC trial today. I'm intrigued by the exhaust on this one - does it have any performance or noise advantages? 2 Quote Link to comment Share on other sites More sharing options...
nigel dabster Posted November 8, 2015 Report Share Posted November 8, 2015 It should have a performance edge, but only small. From probably 1980 we used to weld 30mm of straight tube in the bend on the 325's then the 340's came with a longer front pipe as standard i think(!). As one of the mods vesty and Reg May did they took this way further by re routing the front pipe and therefore increasing the length considerably more than the 30mm. This appeared on quite a few bikes that vesty rode so the asummption is, it is good and worthwhile. The achilles heel is the mid box which needs constant looking after and re packing depending on how much and how hard you ride a bit to keep the motor in top fettle, and therefore make the mod worthwhile. 1 Quote Link to comment Share on other sites More sharing options...
nigel dabster Posted November 8, 2015 Report Share Posted November 8, 2015 noise - no discernable difference. Quote Link to comment Share on other sites More sharing options...
oldjohnno Posted November 8, 2015 Report Share Posted November 8, 2015 Thanks Nigel. The reason I asked is the pipe on my bike is getting a bit rough around the edges so will need some work soon and I was curious about changes that might quieten it down a little. Quote Link to comment Share on other sites More sharing options...
sherpa325 Posted November 8, 2015 Report Share Posted November 8, 2015 (edited) A good friend built this bike quite a few years ago with the long header pipe mod, but to be quite honest neither of us could pick a noticeable difference in power. If you look at the Spanish 'Puma' bikes some of them run a longer header pipe styled after a Gas Gas header pipe. Cheers Greg Edited November 8, 2015 by sherpa325 4 Quote Link to comment Share on other sites More sharing options...
scot taco Posted November 8, 2015 Report Share Posted November 8, 2015 That is a nice looking bike Greg.Did he build the airbox and silencer? Also,where did the swingarm come from? Thanks, Scott Quote Link to comment Share on other sites More sharing options...
sherpa325 Posted November 9, 2015 Report Share Posted November 9, 2015 The bike is a bitsa made up of parts that he had acquired/leftover from many bultaco restorations. The airbox and silencer were homemade, the frame is a 199, engine -199a, forks and triple clamps- early italjet, rims- early gold italjet.The swingarm came on a 199B that was imported to Australia from Hughs in the USA and looks to be purpose built for sherpas. The 199B was restored to original and an original swingarm was sourced and so the alloy one became surplus.If you have Bernie Schreibers book 'Observed Trials' he appears to be riding a Sherpa with the same swingarm in it on page 88. Cheers Greg 3 Quote Link to comment Share on other sites More sharing options...
smelling123 Posted November 11, 2015 Report Share Posted November 11, 2015 Here's my version and also vestys 5 Quote Link to comment Share on other sites More sharing options...
sherpa325 Posted November 11, 2015 Report Share Posted November 11, 2015 Nice work. Did you notice an increase in performance. Cheers Greg Quote Link to comment Share on other sites More sharing options...
smelling123 Posted November 13, 2015 Report Share Posted November 13, 2015 Greg, I didn't use the bike before fitting so it's hard to say.. Quote Link to comment Share on other sites More sharing options...
saw miller Posted November 16, 2015 Report Share Posted November 16, 2015 2015 Barber Vintage Festival. Leeds Alabama. Had a great turn out for trials and the sections were very well put together. 5 Quote Link to comment Share on other sites More sharing options...
scot taco Posted November 16, 2015 Report Share Posted November 16, 2015 That looks like a pretty good area for sections.I hope to get down there next year and ride it.Congrats on the second place finish on the two line and the advancement to the one line next year - nice ride! Quote Link to comment Share on other sites More sharing options...
bultacorock Posted November 17, 2015 Report Share Posted November 17, 2015 (edited) Great day out watching an Aqueduct Classics trail such a great venue for the event, we went to see what there events were like and came a way wishing i had taken my bike ...... here are some photos i made there were lots of bike at the event i have just picked out some Bultacos for on here Edited November 17, 2015 by bultacorock 8 Quote Link to comment Share on other sites More sharing options...
lbhbul Posted November 17, 2015 Report Share Posted November 17, 2015 BR , can you identify the #4 photo? Great photos BTW thanks!! Had this photo of my young friend , I believe the Texas National this spring. Looks mighty dry and slick, really need concentration and all the weight you can muster on the RH foot rest, plus good throttle control and a reliable steed at this point. The bike speaks for itself. Larry 4 Quote Link to comment Share on other sites More sharing options...
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