Going fast was and still is always about spending money . Experience, knowledge are your best teachers… Knapp and others on this site are some of the most experienced and knowledgeable snowmobilers you will find anywhere… They all know how to find speed and all have paid there dues… They are right that Data Logging in this day and age is the tool of choice to guide racers to the winners circle. Its the quickest and most accurate system to give you needed information no doubt about that . But its not the only way nor is it for everyone as we see in the case of J T.. As far as clutch temperature, I think Fleecer asked about lenght of run cause the clutch temperature is something he is very familiar with making long runs to run the speeds he has…. J T you like to post and I see nothing wrong with that and certainly if there is no one posting we will all lose interest in the site and with Yamaha going away its going to be even more of challenge.. Its a great site cause the people that post here make it a great site and lets not lose site of that … Different strokes for Different folks and as long as were talking about 2 or 4 strokes its all good ….