Quick Release Prop Adaptors:-
My first time using larger carbon props 15", I know this is not really large as others are going much further.
I wanted to be able to remove my props for transport, I read quite a bit on folding prop systems and the vibrations they cause so decided to go for the screws type adaptor (left and right hand thread).
I also read quite a bit about these and how some people also suffered from bad vibration after fitting them (from my experience with the lack of quality I can understand why).
I know how critical it is to have a well-balanced prop assembly system.
The first adaptors I ordered came from HiModel, the quality of finish was quite good, threads had a little more clearance than I would have liked but because they lock down to a small taper at the base of the thread I thought this would not matter as the taper would centralise the two halves. I then mounted the adaptors onto a 4mm dia shaft and checked for concentricity using a dial indicator, shock and horror these adaptors were running out by 10 thousandths of an inch.
All the web pages selling this type of adapter will tell you they are CNC machined, yeah right but how I thought.
With so much run out these adaptors for me were unusable, thats $25 down the drain.
Next the same type screw adaptor from Infinity Hobby, be warned these are absolute crap and I did not receive the same type as pictured. The mating threads are very loose and I mean really sloppy, some of the adaptors were not de-burred properly and therefore did not mate well when screwed together, I did not even bother to check concentricity, put them straight in the bin.
Last but not least adaptors from DronesVision, I could hardly believe the contrast, excellent finish very clean machining, the mating threads are very firm with just enough clearance so threads do not bind but no looseness, the set comes with tube inserts for 3mm and 3.175mm shafts (so suitable for 4mm 3.175mm or 3mm shafts). I then checked for concentricity with my dial indicator, they are perfect with less than a quarter of a thousandths of an inch movement on the needle.
You get four adaptors for $13.50 (2xcw & 2xccw) including the tube inserts for centralising on shafts smaller than 4mm, like SunnySky motors, once centralised and your screws are tight you can remove the tube insert.
After the crap I purchased and the wasted money spent I thought in case anyone is looking for good adaptors and to save them the anguish of buying something that really is not fit for purpose I thought I would write about my experience.
I am in no way affiliated with anybody or anything this is just my personal experience.
Regards - bruce
My first time using larger carbon props 15", I know this is not really large as others are going much further.
I wanted to be able to remove my props for transport, I read quite a bit on folding prop systems and the vibrations they cause so decided to go for the screws type adaptor (left and right hand thread).
I also read quite a bit about these and how some people also suffered from bad vibration after fitting them (from my experience with the lack of quality I can understand why).
I know how critical it is to have a well-balanced prop assembly system.
The first adaptors I ordered came from HiModel, the quality of finish was quite good, threads had a little more clearance than I would have liked but because they lock down to a small taper at the base of the thread I thought this would not matter as the taper would centralise the two halves. I then mounted the adaptors onto a 4mm dia shaft and checked for concentricity using a dial indicator, shock and horror these adaptors were running out by 10 thousandths of an inch.
All the web pages selling this type of adapter will tell you they are CNC machined, yeah right but how I thought.
With so much run out these adaptors for me were unusable, thats $25 down the drain.
Next the same type screw adaptor from Infinity Hobby, be warned these are absolute crap and I did not receive the same type as pictured. The mating threads are very loose and I mean really sloppy, some of the adaptors were not de-burred properly and therefore did not mate well when screwed together, I did not even bother to check concentricity, put them straight in the bin.
Last but not least adaptors from DronesVision, I could hardly believe the contrast, excellent finish very clean machining, the mating threads are very firm with just enough clearance so threads do not bind but no looseness, the set comes with tube inserts for 3mm and 3.175mm shafts (so suitable for 4mm 3.175mm or 3mm shafts). I then checked for concentricity with my dial indicator, they are perfect with less than a quarter of a thousandths of an inch movement on the needle.
You get four adaptors for $13.50 (2xcw & 2xccw) including the tube inserts for centralising on shafts smaller than 4mm, like SunnySky motors, once centralised and your screws are tight you can remove the tube insert.
After the crap I purchased and the wasted money spent I thought in case anyone is looking for good adaptors and to save them the anguish of buying something that really is not fit for purpose I thought I would write about my experience.
I am in no way affiliated with anybody or anything this is just my personal experience.
Regards - bruce
