Quote:
Originally Posted by AN
@ neutron256 Also, about the Seadoo SC, that wheel looks really heavy, the blades are really thick (did you notice that too) ... I tried to do some reading online and concluded that since water-crafts hop over waves while in full throttle, their engines go thru very extreme rpm fluctuations ... impellers are not able to keep up with such fluctuations. As a result, they had to introduce a clutch assembly to the supercharger drive so that the impeller can 'slip' during such fluctuations. For the impeller to maintain its rpm during fluctuations, they had to give it more weight/momentum so that it can 'slip' well.
Do you see this helping/hurting this application ? Does a heavy impeller translate into a less responsive engagement. Also, a heavy impeller means bigger current draw while the impeller accelerates to its peak rpm. Your thoughts ? |
Yeah the clutch system is interesting. It is a heavy wheel but from my testing with the Aqustar motor it has no problem getting it up to speed or slowing it down. Remember one of the big advantages of electric motors is that the pretty much have full torque from a dead stop.
This can also be addressed with a programmable ESC that supports soft starts and breaking, as well as governing which works to maintains constant speed under shifting loads. The Fatboy V2 ESC I'm using has all these features.