Hello I been having a "debate" about the load on an engine when going max speed on a lake vs a lesser speed but on an incline.. Here is the basic jist of the discussion... We are talking about a 150HP snowmobile using a CVT at sea level with low snow conditions that is traveling across the lake WOT at max speed (say 110MPH) vs the same snowmobile engine at 9,000ft spinning a much larger track and running in 3ft of snow and on an incline of about 45 degrees WOT traveling at about 45mph up this snow packed hill. So, we know that the mountain snowmobile is losing some decent power because of the elevation and we know that it is having to overcome some serious resistance due to the snow depth and the incline.. How does one determine if these high elevation obstacles out weigh the drag coefficient and higher HP from the snowmobile traveling at 110 MPH on a glass smooth lake? Gearing on the lake sled would be in the 2.0 range and gearing on the mountain sled would be in the 2.35 range. In other words... which engine is working harder? There is probably not enough information to run any true calculations.. if not... would you care to make an educated guess on which engine would be experiencing the most LOAD and STRESS? To add another discussion along these same lines..... How about this.. Take these same 2 sleds at place them on a lake at sea level elevation.. BUT keep the longer (163" with 2.5"paddles vs 121" with .75" paddles)BUT gear them the same.... OK, the sled with the longer and taller track will obviously be slower in terms of top end speed (probably about 15MPH slower) but the HP of the engines and the gearing will be the same. Which engine is under a more heavy load when running WOT across the lake? The slower one or the faster one? or would they be under the same load? Thanks , in advance, for any consideration anybody gives to this topic.