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  • 29/09/2015

    I took a chance on this, because I didn't think there was enough information in the description. I ordered the C version, with the 8x20mm motor, but unfortunately what arrived today was the A version, with 7x16mm motor, so the figures below are for the A version. I haven't powered it up yet, but I think it will be very suitable for an indoor slow flyer of the Vapor, Ember, Cub etc. style. With the 8x20mm motor probably something a bit bigger and/or faster. The prop has a diameter of 138mm, but no pitch marked. By comparing it with other props of known pitch I am guessing it is a 138x63 mm or 5425 inches. It came badly out of balance, but by taking tiny shavings off the heavy blade with a modelling knife, I eventually got it to balance perfectly. It is very light at 1.24g, and I don't think it would withstand a hard impact, but ideal for a slow flyer. The description says it has a .8mm hole, but when I measured the prop shaft, it is 1mm diameter. I tried pushing it into the prop and it is a very tight fit, but does go in. The gearbox is the usual two brass bush type, with plastic 9 tooth pinion and gear. I didn't count the teeth on the gear, but I'm guessing there are 54 giving a 6:1 ratio. The prop shaft is 27mm long with one end knurled for a length of about 8mm. I think the knurled end goes into the plastic nut provided, with the smooth end going into the prop, so you can remove and replace a prop without much trouble. Weight of the gearbox is 1.29g and of the motor 2.61g. Motor shaft is 1mm diameter. There is a square hole in the gearbox that I think is intended for mounting on the end of a square section carbon fibre rod, such as you might use for the fuselage of a very light slow flyer of the Vapor type. It looks as though it is a 2x2mm hole. It would probably be possible to mount the motor/gearbox other ways, e.g. with tiny cable ties or with glue. The proof will be in how it runs, but at this stage I think it's a very light and economical power plant for an indoor flyer, with flexibility in the choice of motor according to your intended use.

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  • 07/08/2019

    Great micro motor for ultra light aircraft under 4 ounces. It ships unassembled but assembly is easy. The propeller balance should be checked and corrected before use. The gear is a little noisy at low rpm but it smooths out at flying speed. I used one in a Guillow's Lancer airplane I converted from rubber power to electric motor and 3 channel RC. This motor and propeller provide more than enough thrust for this under 50 gram airplane.

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  • 26/09/2018

    Nice Motor....... Enough Thrust power to my DIY plane.....

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  • 12/12/2020

    Finom és könnyű lassú hajtómű készlet. Nincs mellékelt Assy utasítások, így meg kell néznie a képet, mielőtt összeszerelné. A perselyeket jól kell összehangolni, különben a tengely hajlamos szorítani és nagy súrlódással futni. Saját készlet felhívja 80mA 4.0V (az 1-es lipo), és mutat néhány rezgés - egyensúlyt a prop, és majd ha húzza elég az én beltéri szórólap...

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  • gozVIP3
    CA
    03/12/2020

    szép kis motor, de be kell állítani a gázberendezést, hogy legyen indító impulzusa, különben a motor nem fut, egy mini bükkhajóra tettem a bensőséges bükkhajóra

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  • 14/10/2020

    gyors szállítás, tökéletes állapotban, alig várom, hogy épület

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  • 08/11/2017

    this item is very good has super power i use for mini cessna airplain fly very good https://www.youtube.com/watch?v=sOhNC9UEu_U&feature=youtu.be

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  • 27/03/2020

    It generates good thrust with low current. But the prop was totally out of balance and generated heavy vibrations. You really have to balance it. I planned to use it on my 35cm glider, but it is too big and heavy. The racerstar 8520 motor with the KingKong 65mm prop is the better choice - even if the current is much higher for a lower thrust.

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  • 24/11/2018

    nice product but motor shaft is very tigh t and motor casing is very tight too you have to make that bigger to fit

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  • 31/08/2017

    Works perfectly fine for small indoor models.

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