Prop attachment to shaft of brushless

[Dillzio]

Hey all, noob question.

I was just wondering, if I were to get an outrunner such as this one:
www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=5499

How would one normally go about mounting the prop to the shaft if the shaft is not threaded?

[duck]

You'll need a prop adapter to fit the shaft. A collet style would be easiest.

That particular motor would either have to be mounted behind the motor mount, with the shaft protruding, or the shaft would have to be modified.

[flydiver]

You seem to be a clever guy but you sure make work for yourself. If you MUST buy a really cheap motor at least buy one that maybe will last and you don't have to jump through hoops to get to work:
www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=8621
Tower Pro motors are cheap. That is the ONLY thing to recommend them.

You will need a collet adapter.
I DO NOT recommend HC collet adapters-soft cheesy aluminum poorly machined. I have a bag full of 'tests' I bought. They are miserable items.

[Dillzio]

Thanks for the tips guys.

Duck, now that I look I see what you mean about needing to mount that motor behind the firewall.

Fly, I'm not actually getting a brushless (yet), I was just curious as to how the props mount. I've looked up what collet adapters are and now it all makes sense.

Why do you recommend that particular motor fly? Have you used it yourself, or are there certain specifications that makes it stand out?

From browsing at what other people recommend it seems that a good choice of motor for the cub is about 1000kv, about 150-250w and weighs less than 75g. Is this about right? What sort of things should one look for in a motor?

Oh, and I'd love to see some more motors you'd recommend, not necessarily cheap ones.

thanks heaps,

-Dill

[flydiver]

You seem to be looking at really cheap motors. TowerPros are certainly that. But the TP motors are inefficient (not much of an issue for new fliers or the Cub), have poor components (though that model is a bit better than the bell motors), cheap wire (often breaks), and lousy quality control. What do you expect for that price?

The one I pointed out is a fairly decent cheap motor but it ain't no miracle either. It has better components (stator, magnets, and wire) and can be rewound to make a fairly exceptional motor comparable to an Axi or E-Flite. Rewind a TP and end up with a merely reasonable motor.
It DOES have a non-standard bearing shaft and requires you use the provided mount-shouldn't be a problem with the Cub.

I have no experience with Turnigy that a lot of the guys use. Some seem to love 'em, some have problems with them.

With no personal experience, purely based on reading, these 2 seem to be a step up:
www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=2048&Product_Name=hacker_Style_Brushless_Outrunner_20-20L
www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=2106&Product_Name=KD_A22-20L_Brushless_Outrunner_Motor

[duck]

So far I love my Turnigy, although it is a bit noisy, it's not really any noisier than any of the electrics I saw at a fly in yesterday.

I used this one.
www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=2112

The performance is amazing, you'd best be on the ball, it gets out of site very quickly.

it comes with the prop adapter etc. I used a E-Flite 30 amp Pro ESC that is way overkill, just because i had it, swinging a 10 x 7 APC prop. It was mounted to a 3/4" thick block of pine with the center drilled out to allow clearance for the shaft, with the prop on the bell end. The whole assembly was then mounted to a cut down SC gearbox, and screwed to the stock firewall. It balances well with a 3s 2200 mah Zippy mounted vertical in the front of the fuselage cavity.

members.shaw.ca/agentsmith/CUB_MODS_up/SuperCub_Mod_26.jpg

[Dillzio]

Thanks for all the help guys, I'm learning fast.

What brushless do you use fly, assuming you use one?

About rewinding motors, is that basically taking out all the copper wire windings and replacing them? Do you know of any handy links on the topic, and where would one get the wire from (and what sort)?

cheers,

Dill

[flydiver]

You mean on the Cub? Sorry, I don't even have a Cub anymore. I'm just here to harass people. Can't you tell? I did have one though for many months but it has gone on to a friend who is happily bashing the he!! out of it.

On the rewinding bit, should you be interested, stateside this is a good place to start.
www.gobrushless.com/shop/index.php?app=ccp0&ns=catshow&ref=diy+brushless+kits
Read one of the tutorials on building a GBv or GBx kit to get a feel for it. It gets a lot more complicated after that.
The principal is simple > take some wire, wrap it around a stator properly, attach contacts, and you have a better motor. Now, the variations about what wire, what stator, what termination, etc get to be kind of confusing until you sort it out. Frankly, 6 months after starting I'm still sorting it out. But I DO have some motors I fly on a regular basis and they DO work better than they originally did. That is pretty rewarding.

I'm not sure what you would do for supplies down there. Information is pretty easy but there is as much to assimilate as there is about the whole arena of flying. Unless you are absolutely hot to do this you might want to set it on a back burner (is that an American phrase?) for awhile.