micm Posted January 14, 2016 Report Share Posted January 14, 2016 Yes the smoothest power I've ever felt on a trials bike. Better try one of these then... 2 Quote Link to comment Share on other sites More sharing options...
gasgas249uk Posted January 14, 2016 Report Share Posted January 14, 2016 Yes the smoothest power I've ever felt on a trials bike. Better try one of these then... Ha ha your right .. but naaaaaa. It's not my bag baby 2 Quote Link to comment Share on other sites More sharing options...
dadof2 Posted January 15, 2016 Report Share Posted January 15, 2016 I think Vertigo and a lot of other engines use Kokusan Denki electrics. Does smooth power equal grip? Remember the development of big bang 500cc GP 2t engines. Smoother equally spaced firing intervals tended to reduce grip. 1 Quote Link to comment Share on other sites More sharing options...
canada280i Posted January 15, 2016 Report Share Posted January 15, 2016 Hold on, we are on page 2 of a discussion involving Ossa and dabster has not chimed in yet.......I sense an imbalance in the universe............. 5 Quote Link to comment Share on other sites More sharing options...
tsiklonaut Posted January 15, 2016 Author Report Share Posted January 15, 2016 Yes the smoothest power I've ever felt on a trials bike. Better try one of these then... Are we talking about proper motoring or electrical washing machines? If it doesn't fill air with that nice 2-stroke smell, then it's a no go. It may be even smoother, but I'll take a proper fully breathing OSSA over any electrical toaster, it's the sweetest 2T trials motor around! Quote Link to comment Share on other sites More sharing options...
tsiklonaut Posted January 15, 2016 Author Report Share Posted January 15, 2016 Hold on, we are on page 2 of a discussion involving Ossa and dabster has not chimed in yet.......I sense an imbalance in the universe............. Quote Link to comment Share on other sites More sharing options...
tsiklonaut Posted January 15, 2016 Author Report Share Posted January 15, 2016 I think Vertigo and a lot of other engines use Kokusan Denki electrics. Does smooth power equal grip? Remember the development of big bang 500cc GP 2t engines. Smoother equally spaced firing intervals tended to reduce grip. With GP bikes it's different story, I.e. Ducati V-Twin engine was speciefically developed for out-of-the corner controllable traction for a human rider to feel out (w/o overdoing and thus highsiding), but this is for tarmac and it's completely different ballgame in terms of traction and grip. Offroad bikes mostly require more "pulse"-like power, especially for better grip over the loose surface. I remember experienced offroad riders said a very lightweight, powerful and capable Aprilia RXV (V-twin) had this too easy to slip issue, because they have denser "pulse" rate over the crank, it's two bangs vs single bang vs single-cyl motor. Single cylinders all have this single-pulse-over crank, but the "smoothness" in actual conditions isn't just about this, I think it's also is how it works and pulls over the entier RPM range over dynamic use of throttle both acceleration and decceleration stages, not just one speciefic RPM range riders keep bragging about. 2-stroke engines are infamously bad for smoothness over the entire RPM range (little power below, but sharp rise on top). OSSA has adressed this issue the best way (a proper precise EFI mapping vs "gut-feeling" with a fiddly carburator) and has done very good. Quote Link to comment Share on other sites More sharing options...
dadof2 Posted January 15, 2016 Report Share Posted January 15, 2016 Funny, one of those bikes with a fiddly carburettor and old fashioned 5 speed gearbox has just won the opening round of the indoor WTC, perhaps master Yoda was casting his wand over the event. 1 Quote Link to comment Share on other sites More sharing options...
baldilocks Posted January 15, 2016 Report Share Posted January 15, 2016 It rides very similar to the much maligned by Dadof2 Gas Gas Pro , sounds good to me 1 Quote Link to comment Share on other sites More sharing options...
dadof2 Posted January 15, 2016 Report Share Posted January 15, 2016 It rides very similar to the much maligned by Dadof2 Gas Gas Pro , sounds good to me I have never criticised the pro for how it rides or its competitiveness, If you search back through my old posts you would find I actually was very complimentary of some of its features and used the word thoroughbred. My criticism of the pro was that it was too lightly built in some areas and had an ongoing reliability problem in another. The new owner of GG has acknowledged past quality problems and made it clear he intends to put them right. Quote Link to comment Share on other sites More sharing options...
timp Posted January 17, 2016 Report Share Posted January 17, 2016 They may as well make them stronger now as the weight of bikes at Sheffield indoor trial was over 70 kg. Quote Link to comment Share on other sites More sharing options...
kiwishaun Posted May 3, 2017 Report Share Posted May 3, 2017 Hi, I am after the Kokusan hardware to analyse the ECU on a 2015 TR300i Ossa. Does anyone know of any used or new units available such as shown in the attached photos? Quote Link to comment Share on other sites More sharing options...
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