![]() BUT, this is as good as the new Futaba S3003 I compared it to. In general, it only moved every two clicks, but it did move by two click amounts, so it the electronics are registering the new position angle but mechanics can't respond so precisely. The resolution is not good enough to move for each click of the trim on my transmitter. Vertical play on servo horn is 1.4° - this is VERY BAD for a servo. Unlike the vast majority you find on other sites, even large sites like Amazon and Ebay, these are genuine. These MG996R servos are slightly slower in a 'race' test between maximum deflections. TowerPro MG90s Servo Motor is good for beginners who want to make stuff move without building a motor controller with feedback & gear box, especially since it. These are real Tower Pro SG90 digital servos. This is very hard to accurately measure, so I just tested it against a Futaba S3003 servo. After several tests with 3 of these servos the maximum torque is 10kg.cm 6.6V (high discharge battery - no voltage drop so this is the servo limit and not the battery. As the servo turns the torque builds up and the mass and angle at which it can't turn any more tells us the maximum torque. I built a test rig with a heavy weight hanging from the end of a 4cm servo horn. Would use these instead of standard Futaba servos, if it wasn't for the wobbly servo horn shaft. I'm using one for the rudder with pull-pull wires (nice and tight so the shaft slop doesn't matter. The mounting screws are too short! They only stick out by 4 mm from the brass eyelets!! Nothing like long enough to securely hold the servo, especially if you are intending to use the high torque these servos are capable of. The brass eyelets are TOO LONG! They stick out by about 1mm from the rubber grommets and hence will cause too much movement in the servo on the mounts. Servo horns are thicker than usual, and a normal clevis won't clip shut because of this. I tried running these for 20 minutes under a high loading, the casing around the motor reached 60☌ but steadied at this temperature. No glue on soldered connections, vibration resistance an issue? Motor has worked well. The free play can be expected to increase slightly with use and the plastic surround wears.īrass gears that seem well made. So for applications where high torque is constantly required, the bearings in these are not good enough. But with poor free-play and no ball bearings. I think these should be regarded as high torque, metal geared STANDARD servos. Weight = 58 grams (without fixings or horn) Resolution: Movement every two trim clicks (same as Futaba S3003) ![]() Speed: Slightly slower than a Futaba S3003įreeplay = 0.7° rotation and 1.4° on the shaftīearing: One brass bushing, no ball bearings anywhere inside. The main thing to note is that some adverts say that these have double ball bearings- they do NOT!! Th ey only have a bushing that does not stop a lot of shaft wobble. ![]() I was asked to test these for an Amazon review. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |