That ought to do it. If you look at the splined shaft you can see that the splines on the non-driven end of the shaft are all flattened out and the spines on the driven end of the shaft are nice and sharp. Obviously the shaft was pressed into the armature stack from the non-driven end. I would still be mightily surprised despite it being an interference fit, that those splines slipped inside the armature stack. The armature stack isn't as important as the stator stack. If...and I'm skeptical that it is slipping...but if it's slipping, then drill a couple of angled holes into the armature stack and into the shaft and then put a screw down in the hole and then fill in the hole around the screw with super glue. Runny/thin glue will naturally flow into and around the screw. The thicker stuff is good for filling gaps, but it doesn't flow so well. The screw is the strength to stop any further slippage. A 6-32 screw has a lot of shear strength, but use a 10-32 0r 5mm screw just to be sure it will hold. The glue secures the screw from slipping or coming loose.Ianhill wrote:Have a look for me how the main sprocket shaft is secured to the rotors laminated plates under the magnets I expect its an interference fit with a splined shaft.
It slipped under full load pulling off I backed off a bit got some speed the load had dropped and it performed as normal, I then drove the motor warm before trying to give a full throttle start again and it was fine, I'll investigate it more tomorrow.
I wonder if expensive IBM magic smoke is compatible with cheap Chinese magic smoke?Ianhill wrote:All three phase are melted to bits so i say you might have overloaded it a little bit , looks like the weak spot has been found on the rotor to much torque and it spins the shaft on start up I suppose the smaller rotors slip easier than the larger brother and that temp plays a big part as it was quite cold but like u say it can be sorted if i drill 3 m3 holes in a triangle shape down the sides of the shaft fill it with liquid thread lock and drift a trimed 3.5mm hardened nail in them both ends of the rotor offset in a way to keep it balanced and the shaft locked down for good hopefully.
The design of these motors has amazed me, get a bread loaf magnet, stamp all the parts and make the can to length very simplistic but effective
China seems to be magic smoke capital of the world their fireworks display team seem to have gone the whole nine yards in sabotaging every product of their own to be as shit as possible in an attempt to make sure we all get to see big displays as often as possible and credit where its due they really got making a shitty product down to an art now I've seen many of their product put out a cracking display for the whole family to gather round and see, FLASH BANG magic smoke lmao.
IBM have got refils for that boma if your interested
Well it's round now!Ianhill wrote:Got some tyres that were out of round and generally dangourous crap so little video of what I did to them still got one left too.