Though this discussion is getting a little ot, sorry. I think a heavy phantom really needs some props that can easily lift it, adding an extra battery and graupner profile props I think would be lucky to get any more flight time out of it as they can barely lift a stock standard phantom. When underpropped it fly's like crap and drains battery like crazy so adding more weight in batteries if your already struggling to lift your setup is not going to do much for you.
You would need to ream out the holes to 8mm for stock motors, I use Tiger mt-2216 kv 900 and these are a stock round 5mm prop shaft. Main reason I got them is to be able to easily try different props which on stock DJI motors is a bit of a pain. A few other guys are also using them on stock motors now but I havent had the stocks for a while.
I have just bought 4 of those so will be trying them this weekend.
I don't rate the Graupners on the Phantom at all. I have a set of 8 x 5s and it flies really unstable with them on. I tried playing with the gains but I put it down to the profile in the end. Not enough lift.
Recently I dropped the Graupner 9x5s on my F550 and replaced them with APC Electric E 9x4.5s and it's much more stable.
I'll stick all my Graupners on Ebay I think. Expensive props and not that great.[/quote]
Graupners may be good for other purposes but once you fly the phantom a while and try a few different props you can see how the lift effects flight time, performance and stability. The 8x5 graupner profile props are the nicest props I have but just the wrong profile so they have barely half the lift of stock 8045 DJI props. It barely lifts my phantom with single camera and FPV coming down hard after barely 4 min where stock will get me 7 and 9050x3 over 8 with the same setup.
Glockindahaus said:Do they fit the Phantom without any changes to the center of the prop?
You would need to ream out the holes to 8mm for stock motors, I use Tiger mt-2216 kv 900 and these are a stock round 5mm prop shaft. Main reason I got them is to be able to easily try different props which on stock DJI motors is a bit of a pain. A few other guys are also using them on stock motors now but I havent had the stocks for a while.
rilot said:Those props; GWS 9x5s?
I have just bought 4 of those so will be trying them this weekend.
I don't rate the Graupners on the Phantom at all. I have a set of 8 x 5s and it flies really unstable with them on. I tried playing with the gains but I put it down to the profile in the end. Not enough lift.
Recently I dropped the Graupner 9x5s on my F550 and replaced them with APC Electric E 9x4.5s and it's much more stable.
I'll stick all my Graupners on Ebay I think. Expensive props and not that great.[/quote]
Graupners may be good for other purposes but once you fly the phantom a while and try a few different props you can see how the lift effects flight time, performance and stability. The 8x5 graupner profile props are the nicest props I have but just the wrong profile so they have barely half the lift of stock 8045 DJI props. It barely lifts my phantom with single camera and FPV coming down hard after barely 4 min where stock will get me 7 and 9050x3 over 8 with the same setup.