Rgs
Fabio.

As I have got to know the typical usage patterns with these motors I’m thinking that it probably doesn’t make a lot of difference which prop you choose. Chances are that you won’t be running much at full speed, and thats where there’s a difference. Because at full speed it will suck the power out of battery pretty quickly.So these motors tend to be used at low power settings, say around 100 t 150 watts so as to have plenty of range.

With that in mind, perhaps it is worth getting the three bladed prop, but I’d think it highly unlikely to be worth tinkering with the faster props from the Cruise models.

Cheers

Chris

cheers, Kendall

I really need a boat that can be transported on top of my car and stored easily in my shed so have been looking at portabotes etc and am waiting for more details of the Aussie Foldaboat which looks like a relatively slippery design for the type of hull it is. All up weight should be around 150kg including myself, travel 1003 and a bit of fishing gear. I know the folding boats will be no where as slippery as something like a Hobie Wave but considering the torque of the Torueedo, low weight of the boat and smooth inland waters I will usually be on, I’m confident there are gains to be had with the 503 prop but not so sure about one of the cruise props. Might be asking too much.
I notice the 1003 and 503 are both available with 2 props each. Just wondering which 503 prop you used? The V8 or V9?

cheers, Kendall

I’ve been meaning to try that sometime but haven’t gotten around to it yet What we need though is a really easily driven boat to try it, maybe something like a Hobie Wave. We’d have to adapt one of the fast Cruise props so that it can be attached to the 1003 drive shaft which is a different diameter. One way to tell beforehand whether we’re likely to get a better result is to find a boat that we think might do it, and run it with the 801 prop on and see how many watts it is pulling at top speed. If its less than full power then thats an indicator that we could do better with a faster prop.

Do you have a candidate boat in mind? I imagine a light boat on foils would be just the ticket…

Cheers, chris

Just wondering if you ever tried the cruise prop on the travel 1003?
Very keen to buy a travel 1003 but just need a bit more speed to make it a viable option.
Its good to see a few more kmh can be gained with the 503 and 801 props.
If one of the cruise props can gain a bit more then you are on to a winner.

No I haven’t done anything more on the Ultralight. Now that I’m back in Sydney and catching up on projects that have fallen behind, i do hope to be able to get back to this.

While working on the Sienna (solar boat) I did experiment with making the foil larger on the Cruise 2 (to help with steering) but the interesting thing was that I used some foam sheet that is typically used for signs, such as a real estate sign. Its about 5mm thick and curves nicely. I used some Purbond polyurethane foaming glue It produces a foam that seems to have similar properties to the foam sheets I used and it can be sanded and shaped easily. So you might want to check that out as a way of making the foil.

As to the bottom orange bracket, its needed to stop the motor from sliding updwards/forwards when you pull on the cord to raise the motor when coming into the beach. But whatever you use as a cav plate/foil would prevent this effect too.

Another option for the foil is that I have a foil from a damaged 801 and you might be able to use that for your experiments. Let me know if you’d like to use it.

Cheers

Chris

My dad and I are planning to make a cav plate for my new Ultralight 403 (he reckons we should just do that before mucking around making a foil), did you ever get around to doing more work on yours or designing it?

We have a sheet of 2mm aluminium that we’re theoretically going to cut to shape and glue to the shaft, with some other attachment points somewhere to hold it in place.

I can envision having a hole through it that feeds over the shaft, and having the plate rest on the lower orange adjustable bracket. Given that when the motor is mounted, it hangs from the upper orange bracket, what is the lower orange bracket actually for? Does it do anything?

Your theory makes sense to me as far as power to the prop is concerned. That is, there would be no difference in the power being delivered to the prop.

There could be a difference, probably small, in electrical and drivetrain losses to get to this point. We could speculate that the double reduction of the 801 would introduce more losses than the single reduction of the Cruise. On the other hand, the lower voltage of the Cruise would require higher currents and so there may be more energy lost to heat, perhaps balancing the effect of the reduction.

In practise it would probably be very difficult to measure the difference.

Cheers

Chris