For my builds I use mainly HobbyWing Quicrun and also have a couple of their water-cooled Seaking. I think they are a good balance between quality and cost. Wheelspin Models are my usual supplier.

I was a bit disappointed to find that I can't use the program card for the 30amp Quicruns which I use in my slower craft. But as I only need to change one parameter, namely to give Forward/Reverse the counting the blips method has worked so far! Found out afterwards that the 30amp Seaking can use the card, go figure!

Keep sources of 'chopping' interference away from them such as Auxiliary BECs and other switching devices..

I don’t think you can beat Mtronik’s ESC’s

? What esc do you use?

I'm using a 30mm diameter 3 blade brass prop (as in all my builds but with different diameters) and I reckon one of those would be just the ticket. As for size the rule of thumb for brushed motors was not to exceed the diameter of the motor but with brushless they can turn a bigger one so 35mm could be a good choice.

It depends to some extent on how much room you've got and what looks right - does the plan show the prop? But ignoring that for now a 35mm or 40mm would work.

I see that your model can in fact plane, though in all probability they were used at mostly more sedate speeds so that the champagne wasn't spilled!

As to Faireys. I don't know if this is accurate but I view them as our equivalent of your Chris Craft boats. The wooden hulled sports cruisers were built in the 1960s and 70s and were raced successfully.

As to which one it depends on whether you want to build from scratch, from a wood pack as per Sarik or from a complete kit. Favourite? I like them all in different ways but do have a soft spot for the little Huntress but also like the Swordsman with the raised aft cabin a lot. SLEC do a nice kit for the latter but I think it's a little small at only 25" long which is why I'm building my own (started before the kit came out!) at 1:12. There are plans for a similar Swordsman at that scale if you want to scratch build.

What could be a favourite though is the Huntsman 31 Sport which doesn't have an aft cabin, just a big open cockpit and was primarily built for off-shore racing. The hull is the sleekest of the wooden hulled boats and looks very nice. There were never any kits or drawings produced for one but it's easy enough to alter an aft cabin version as a few folks have done. I started to build one but then decided I'd got enough full cockpit Faireys and so modified it to the more common aft cabin version. Here's my side view that I used for the build.

Chris

So I've sourced a 2826 1400kv for my Sarik SG&K Runabout (33") should be about right then...good to know. What prop size are you using? I've been eyeing the Fairey series, don't know much about them, any one particularly better than the others? Your favourite?? Enquiring minds want to know. Cheers!

Hi - it's 23" long and is basically a Fairey Huntress hull with more freeboard, so in essence a planing hull.

The motor is an Overlander Batteries Tornado Thumper V3 3530/14 1100KV. It's over-powered really as a 28mm dia. would be fine, but as I said it's nice and smooth on take-off and I run it on a 2S. I was tempted to try it on the plane but as the full-size boat only had a 20hp engine for river and lake use I've managed to restrain myself!

Infact I've got a couple of Huntresses which Dave Milbourn built with 28mm dia. motors which plane well on 3S. Not that you want planing performance with your gentleman's cruiser!

I'm building a Fairey Fisherman 27 which is a bigger and heavier displacement model and I'm trying a 2826/18 1000KV motor in that, so it will be interesting to see how that performs. I can always fit another motor if needs be.

But that's the good thing with brushless motors, their latitude and a whole range will work dependent on the battery voltage.

Chris F
What size is the boat in your picture with outrunner kv? I'm trying to do the same thing with a S&G Gentleman's runabout.

Outrunners are generally more torquey than the equivalent sized inrunner. So for a large model, say 3-4 feet in length, and outrunner would be my 1st choice. In comparison, as Chris says, for a small, fast, lightweight model, I'd go for an inrunner, they're usually higher revving, but spin a smaller diameter propeller compared to the outrunner.

Will

Thanks for all the info guys at least I know roughly what people are talking about now

Hi Chum - no that's an outrunner. I'm using them in all seven of my Fairey builds. The only inrunner I've got is for my non-Fairey water-jet project which needs a higher revving motor and they are more effectively water-cooled using a water jacket. I don't water-cool my boats usually but the inrunner motor with high kV and the water jacket came as part of the water-jet.

First photo is the River Cruiser installation and the second is the water-jet with the third being the boat it's going in.

Chris

CF, are you using an inrunner in the boat you mentioned?

Hi - I've heard that mentioned a couple of times but as long as a decent quality ESC is used then it isn't a problem. I'm not talking expensive here as I use HobbyWing Quicrun and with my Overlander motors my boats can pull away smoothly at very low revs.

As I mentioned I've used one in a boat in which a brushed would be an automatic choice, that's my Fairey River Cruiser. I'm also using them in my Fairey Faun (which is a small and slow river/lake cruiser) and Fisherman which is a motor sailer. River Cruiser shown.

Don't know about the difference between outrunners and inrunners but the latter are generally used in race boats and water-jets where low speed running isn't an issue.

I am not experienced with brushless motors but the few times I have tried them I found they have a poor or non existent ability to run at very low rpm. Low end response is a must for tugs.

Is there a difference in response for in-runners v out-runners?

The main thing you haven't mentioned is the greater power, size for size that brushless has over brushed.

Also brushless will accept a greater range of voltages so if you need more revs you can up the volts!

I'm a big fan of brushless, being late to the hobby, as I like their engineering, and in my own builds even use them where brushed would be perfectly fine. The only brushed I have are in my plastic race boats like the Club 500 which it came with and my other ready to run boats. In many cases both types will do the job, unless you want very high revs with very fast boats or water-jets where brushless are the way to go, so otherwise it's down to personal preference.

Chris

Hi Pat, about permanent magnet brushed motors I suggest you read the link at the end of the text.
In the meantime I'll write you some differences, if I'm wrong the other users of the site will correct me.

Brushed motors. Advantages:
They are on average cheaper than brushless ones.
They have two power cables and not three like brushless ones.
By varying the voltage (between a minimum limit and a maximum limit) the power and the number of revolutions vary. To activate them, just power them (you can make a direct connection to batteries or bench power supplies, useful for tests).
This is not possible for brushless.
In fact, the ESC of a brushed is simply a radio-controlled voltage variator while the ESC of the brushless is more complex (it supplies voltages in sequence to the phases), it is a real electronic controller without which the motor could not work.
For reverse (for permanent magnet ones) just invert the power cables. In relation to costs, the brushed esc is on average cheaper than the brushless.

Advantages of brushless.
Usually the brushless is quieter because it does not have brushes.
Sooner or later the brushes will have to be replaced in brushed motors because they wear out. Remember that the brushes scrape on the rotor creating sparks and therefore disturbances in the circuit. This inconvenience can be eliminated (or at least greatly reduced) with three capacitors.
The capacitors are used to eliminate the disturbances that the motor creates in the circuit and not vice versa.

Generally I find brushed motors more advantageous for ships (I think it's the opposite for airplanes) and less affected by noise. I'm sure I've forgotten something, but as it comes to mind I'll tell you.

https://model-boats.com/forum/147506 https://model-boats.com/wiki/147457