I'm trying to figure out how motor size will effect the speed of a personal motor craft. I have looked at trolling motors and they have a very wide range of thrust outputs and most seem to be under 1hp from what I have seen.
Obviously the craft will be battery powered but I don't think power will be much of an issue as there is plenty of room for custom lithium packs.
One thing I need to make a note of is that the craft will probably run at about 1/3 power for most of the time but it will need to have some short bursts of full power for 20-30 seconds and possibly 5-8 seconds of a "turbo" or maybe over-voltage if that can be possible. I know the over-voltage is potentially dangerous, especially for prolonged periods. If done it would be something like 15-18v running through a 12v motor or 30v through a 24v.
I'm trying to figure out if it would be better to have 3-4 motors of 500-750 watts each or one that is the sum of the wattages. What I am most confused about is motor size. I find it really odd that some cordless drills are rated at 820 watts and an older motor I have rated at 640 watts (1/6hp rated) is about 20+ lbs.
I'm either going to use one motor (pancake type or standard axial) with one large impeller or an impeller on each of the smaller (much more work probably.
If anyone can explain the difference in motor size vs wattage and if those drill motors really put out 820 watts - 1.13 hp (745watt/hp)
Also are there any types of motors that might be especially beneficial for this type of application (like using an impact motor setup - or something equally as unique.)
Obviously the craft will be battery powered but I don't think power will be much of an issue as there is plenty of room for custom lithium packs.
One thing I need to make a note of is that the craft will probably run at about 1/3 power for most of the time but it will need to have some short bursts of full power for 20-30 seconds and possibly 5-8 seconds of a "turbo" or maybe over-voltage if that can be possible. I know the over-voltage is potentially dangerous, especially for prolonged periods. If done it would be something like 15-18v running through a 12v motor or 30v through a 24v.
I'm trying to figure out if it would be better to have 3-4 motors of 500-750 watts each or one that is the sum of the wattages. What I am most confused about is motor size. I find it really odd that some cordless drills are rated at 820 watts and an older motor I have rated at 640 watts (1/6hp rated) is about 20+ lbs.
I'm either going to use one motor (pancake type or standard axial) with one large impeller or an impeller on each of the smaller (much more work probably.
If anyone can explain the difference in motor size vs wattage and if those drill motors really put out 820 watts - 1.13 hp (745watt/hp)
Also are there any types of motors that might be especially beneficial for this type of application (like using an impact motor setup - or something equally as unique.)