do you need the motor's c-clip?

[Hummina Shadeeba]

if the motor is mounted it seems the c-clip is unnecessary. taking it off can allow more shaft to be exposed and less likely to have the pulley hanging off the end of it. there's no reason the rotor would be pulling off the stator in that direction anyway. probably slows the motor down

 

[torqueboards]

The c clip holds the mounting part and the stator together. If you remove the c clip then the two can move away from each other.

 

[chuttney1]

The c clip holds the mounting part and the stator together. If you remove the c clip then the two can move away from each other.

Its also a cheap way to keep things together and why it's used so often in other things.

 

[Hummina Shadeeba]

The c clip holds the mounting part and the stator together. If you remove the c clip then the two can move away from each other.

there is no force pulling the rotor off the stator though and the magnets are holding it ...but more so if it did have anything pulling it the pulley wheel would hold it on

I don't know what you mean by "mounting part"

 

[torqueboards]

The mounting area of the motor will separate from the rotor/stator if there is no C clip which ends up moving the motor shaft. Not too sure on the actual technical details though.

 

[Hummina Shadeeba]

The stator is pressed or more likely just glued to the bearing tube. The bearing tube is also the same aluminum part that has the bolt holes for mounting the motor. The connection between the mount and motor will be unaffected by the c-clip. Worst case scenario where the motor's pulley wheel falls off, and then a ghost comes over and pulls the rotor off the stator, .. As long as the ghost is even slightly gentle it's unlikely they would crack a magnet and the coils are pretty protected.

The magnets and stator iron attraction holds the rotor on very well and it's not easy to pull off. The friction from the clip is probably pretty small but if not necessary.. Some motors have the clip and a brass washer and some have two

Not that it really matters. Just seems a shame to have to drill much more than the 8mm diameter for the axle to accommodate the c-clip which requires the hole to be much wider. Or maybe your mount just has a recess for the clip and it isn't drilled all the way through

 

[LEVer]

Hummina I have tons of 8mm shafts here from taking it out to make the Hub motors. They are 11mm in length. If you want them, PM me your address and I'll send you a couple.

EDIT: Sorry, I meant 11cm or 110mm.

 

[torqueboards]

Not that it really matters. Just seems a shame to have to drill much more than the 8mm diameter for the axle to accommodate the c-clip which requires the hole to be much wider. Or maybe your mount just has a recess for the clip and it isn't drilled all the way through

Yeah, you do want to protect it. The previous motor mounts it fit decently but not as much as I had hoped. Sometimes, I just do without it but then your motor shaft will pull in and out since the c clip is not holding it in.

Welded Mounts - The new ones have a slight counterbore on the opposite side to leave room for the c clip to spin freely.

Bolt on mounts - I have the motor mount on it's own individual piece and belt tension not in the way since belt tension is on another piece and not specifically the motor mount part.

I'm pretty sure that's what you are referring too. You want to keep the c clip unless the negatives don't bother you.

 

[Hummina Shadeeba]

Thanks peri but I wouldn't know what to do with them. Maybe when my shaft breaks from not using the c-clip I'll write u.

Awesome motors peri. Did u figure the rubber replacement out yet? Nice job on getting the lathe and getting it done. Wish it was me. Remember talking to you on the phone a year ago. Write me if the next maker faire is coming and you'll be there

 

[Hummina Shadeeba]

Dragging it on and on but torque you say the motor goes in and out without the clip? You noticed it visually I guess? Maybe it's more friction with it off

 

[torqueboards]

Dragging it on and on but torque you say the motor goes in and out without the clip? You noticed it visually I guess? Maybe it's more friction with it off

Yeah, it does. On my older setup it would slight move inward towards the deck and would sometimes scratch the motor mount itself since the motor pulley was close.

I think it's due to leaning hard on one side specifically and the torque pulling.

 

[onloop]

I strongly suggest leaving the circlip in place. Simple drill a larger diameter hole in the motor mounting plate.

Is there are reason you can make the diameter of hole larger? Alternatively use four washers between the motor plate and the motor, this will give clearance for the circlip, so then you can have a small hole of maybe just 9mm for shaft to pass through.

But of course now there is less shaft for mounting pulley.

So i can only assume you are trying to use wider belts or somthing? Why won't your pulley fit on properly? You should be able to use 15mm wide belts, the width of your pulley will be about 18mm, leaving about 8mm of motor shaft. If you have a 6mm thick motor mounting plate you now have 2mm of shaft left.

 

[Hummina Shadeeba]

I strongly suggest leaving the circlip in place. Simple drill a larger diameter hole in the motor mounting plate.

Is there are reason you can make the diameter of hole larger? Alternatively use four washers between the motor plate and the motor, this will give clearance for the circlip, so then you can have a small hole of maybe just 9mm for shaft to pass through.

But of course now there is less shaft for mounting pulley.

So i can only assume you are trying to use wider belts or somthing? Why won't your pulley fit on properly? You should be able to use 15mm wide belts, the width of your pulley will be about 18mm, leaving about 8mm of motor shaft. If you have a 6mm thick motor mounting plate you now have 2mm of shaft left.

Just curious really. Made a mount and made a Counter bore for the c-clip and then wondered if it was necessary

 

[bandaro]

I don't run them. Took them off when I was "checking" the motor, didn't bother putting them back on. The magnetic field holds the rotor on nice and tight, there is only 5mm gap between the rear motors so they couldn't move much anyway, the pulley clamped to the shaft will stop the motor moving out more that about 1.5mm and the belts keep it properly aligned anyway. Also, that weight saving yo!

Additionally, given I am running 40mm motors (yup, twin babies for now, hub motors coming, not enough power for me) the motor shaft is only 5mm. This means in the clip groove, I have 4mm of meat, and this broke on one motor. I have some 316 stainless rod to replace with and it doesn't have that 4mm diameter section to break where the last one did, so stronger too. Yet to see how the stainless hold up as I haven't cut it to length yet, but feeling good.