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Post by Dillzio on Nov 25, 2009 9:38:28 GMT 1
I've just tried this propeller on my stock cub, and I'm VERY impressed. www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=8022. The Master Airscrew 9x7, not only are their props practically unbreakable, but the thrust is fantastic, and the battery life is better than I ever expected. Only $2 from HobbyKing. Costs twice as much as the cheapies, but last ten times longer. I've reinforced my cub so it's about 4oz heavier than stock, and this prop made it fly almost as good as when it was brand new. I just went out for a 20 minute flight with my zippy 2200mah batteries, and at the end the battery was only down to 3.7v per cell, that's better than I usually do with my GWS 10x6. The extended battery life may be because I found that the 9x7 had so much thrust I didn't need to use WOT much. The only prob with these props is the shaft hole, I believe it's 6mm, 2mm too big for the stock cub shaft and unfortunately, these master airscrew props don't come with shaft adapters :-( (cheap bastards!) The solution I used was to buy a bunch of the $1 9x6 APC style props that do come with the shaft adapters ( www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=5439 ). I then just need to drill out a recess in the prop for the shaft adapter to fit in and it's good as gold. The hole at the back of the prop is the perfect size to fit snugly around the nut on the prop shaft, which should further aid in centering the prop. |
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Post by Legot on Dec 12, 2009 8:28:45 GMT 1
how do you think these would work on the Stock (red) supercub?
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Post by Dillzio on Dec 12, 2009 8:46:45 GMT 1
From what I've heard, I doubt it would have enough thrust for NiMH power. You might get away with a 9x8, but it's not a very common size.
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Post by john66 on Apr 8, 2010 9:40:05 GMT 1
Hi Dill, were you running this prop until you lost your cub, if yes was it still stock and did it perform fine continually. I ask because obviously the prop issue is alot more in depth than one would first realise. As I have now damaged one original prop and have my spare now on my cub, I figured with my prefered method of landing (nose first!), it was time to invest in a spare. I checked out the link you posted and found them here in the uk, the thing is the website I found em on states that they are strictly for "Glow Fuel Powered Aircraft".
Any help appreciated, I like the idea of a stronger prop.
John
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Post by ginginho on Apr 8, 2010 9:55:16 GMT 1
Hi Dill, were you running this prop until you lost your cub, if yes was it still stock and did it perform fine continually. I ask because obviously the prop issue is alot more in depth than one would first realise. As I have now damaged one original prop and have my spare now on my cub, I figured with my prefered method of landing (nose first!), it was time to invest in a spare. I checked out the link you posted and found them here in the uk, the thing is the website I found em on states that they are strictly for "Glow Fuel Powered Aircraft". Any help appreciated, I like the idea of a stronger prop. John You'll want the electric versions of MA's. BRChobbies.co.uk sell em with the adaptor rings, I use 7x4's on the TS, nice prop. EDIT: FFS out of stock of the 9x6!  But they have the 10x6.  |
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Post by john66 on Apr 8, 2010 10:02:31 GMT 1
You'll want the electric versions of MA's. BRChobbies.co.uk sell em with the adaptor rings, I use 7x4's on the TS, nice prop. EDIT: FFS out of stock of the 9x6! But they have the 10x6. [/quote] Thanks ginginho, are they stronger than the stock one? John |
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Post by Dillzio on Apr 8, 2010 10:16:52 GMT 1
Yeah, I had one of these props on my cub until I lost it, and everything else in my setup was stock. It performed totally fine.
Once you start buying your props from hobbyking, you'll find that anything else is a waste of money. If I can help it, I will never pay for another stock hobbyzone prop as long as I live, the alternatives are much better and cheaper. I found the weakest prop is stock, followed by APC-E style, GWS HD/DD, and the strongest being the MAS.
I've never heard of a prop being labeled as glow aircraft only. MAS make some very similar props that do come with the shaft adapters that are labeled ELECTRIC ONLY, but as far as I'm aware the only thing to stop you from using a glow prop on an electric motor is the weight, as glow props are often heavier. I just weighed one of them, and it's 14 grams, about the same as an APC-E style. 5 years ago these props may not have been appropriate for most electric motors, but now that Lipos are commonplace the stronger props are being more commonly used on electrics.
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Post by ginginho on Apr 8, 2010 10:22:15 GMT 1
Thanks ginginho, are they stronger than the stock one? John Yep. |
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Post by john66 on Apr 8, 2010 10:22:23 GMT 1
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Post by Dillzio on Apr 8, 2010 10:45:02 GMT 1
10x6? What are you trying to do to your poor little motor? Just make sure you lay off WOT for too long.
You can get away with a 10x6 GWS because it has such thin blades, if you have nice curvy blades that catch more air you could be putting a bit too much strain on the motor and ESC.
I found the MAS 9x6 has about the same thrust as the stock HZ prop, so going to 10x6 will give you a bit more. Technically I suppose it should be within specs, because HZ recommends using their 10x8 prop for if you use the floats. Still though, I seriously doubt any stock motor/ESC would last more than 6 months running a 10x8 prop.
You might want to consider attaching a heat-sink to the FET in the stock receiver box, it worked pretty well for me.
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Post by john66 on Apr 8, 2010 13:44:43 GMT 1
10x6? What are you trying to do to your poor little motor? Just make sure you lay off WOT for too long. You might want to consider attaching a heat-sink to the FET in the stock receiver box, it worked pretty well for me. Oh I figured the " " after ginginhos msg where he said the 10 x 6 was available meant GOOOOOOOOOOOD!!!!! With regard to the heatsink, do you have any pics or thread links? What is the FET? John |
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Post by Dillzio on Apr 8, 2010 13:52:10 GMT 1
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Post by john66 on Apr 8, 2010 16:06:21 GMT 1
Thanks for the info Dill, but if im honest, I understand what a heatsink is and how it works but even looking at the thread, the installation of one is going a little over my head. At this point in time I would be a little scared of damaging the electronics....... If I do burn out the stock motor what a great excuse for going brushless! That being I dont trash beyond repair / lose my plane in the process.....Me imagines myself convincing the gf why I need this new super duper upgrade! ;D But thanks again, John |
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Post by Dillzio on Apr 9, 2010 3:17:06 GMT 1
I didn't think it was too difficult a job, you basically just glue a heatsink to the metal on the FET ,and cut out a hole in the case so it fits. You won't be able to find a heat sink in the right size, but they're easily cut to size because they're only make of aluminium. You can't really damage the electronics because you're not altering them, you don't even use a soldering iron. You're just gluing a heat sink on to the bit that gets hot. Burning out the stock ESC is however an excellent reason to justify going brushless.  |
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But they have the 10x6. 
