(30-Sep-2023, 06:58 AM)Bad Raven Wrote:  



Three Mob6, Mob7, Moblite7....................  no issues. See, I have saved you the "trouble"................  

Hi Bad Raven,

Thanks, Mate. 

So, you have no issues getting the props removed from any of those small whoops?
And, never broken a motor removing props? You know, it sort of amazes me that
some motors break like that. 

Do you use a tool or just twist off with your fingers?

Back in the day, one of those tools would be included with the tiny whoop quad and
sometimes even when purchasing a bunch of props. That is where I got mine. I have
several (or more). 

That said, I just used my fingers and twisted the little props until they came off. Thing
is, I didn't have any issues. I still use this method unless a prop is really on there tight.
I discovered early on that the tool was thicker than I liked which sometimes made it a
bit hard to get between the prop and the motor, so I just took it to the bench grinder 
and sharpened it up like I would a knife; it has worked just fine ever since then
(when I need it).

Anyway, Thanks for your reply.

Later, My Friend, iFly  

I have the happymodel prybar, similar to the tool in post 5, but the metal is poor quality and bends too easily.

I was considering this tool from Ali express, type 2
https://a.aliexpress.com/_mLdYgAS

Looks sturdy and like it will slot in well.
Otherwise I'll modify an old knife or blade with a slot as a prybar.
Does anyone think a lubricant like wd40 would help get them off, or is it a bad idea to get lube into a motor system?

Thanks to everyone for all the ideas.

(30-Sep-2023, 12:55 PM)iFly4rotors Wrote:
Hi Bad Raven,

Thanks, Mate. 

So, you have no issues getting the props removed from any of those small whoops?
And, never broken a motor removing props? You know, it sort of amazes me that
some motors break like that. 

Do you use a tool or just twist off with your fingers?

Back in the day, one of those tools would be included with the tiny whoop quad and
sometimes even when purchasing a bunch of props. That is where I got mine. I have
several (or more). 

That said, I just used my fingers and twisted the little props until they came off. Thing
is, I didn't have any issues. I still use this method unless a prop is really on there tight.
I discovered early on that the tool was thicker than I liked which sometimes made it a
bit hard to get between the prop and the motor, so I just took it to the bench grinder 
and sharpened it up like I would a knife; it has worked just fine ever since then
(when I need it).

Anyway, Thanks for your reply.

Later, My Friend, iFly  

They used to come with every lil Hubsan too...

Ya know... a person could use this "excuse" to get a mini belt grinder for a task such as this, and keep it for the myriad of things to come afterwards! They are soooo useful, once made one powered by an old discarded treadmill motor, but it was much more heavy duty.

(30-Sep-2023, 01:42 PM)FPVme Wrote: I have the happymodel prybar, similar to the tool in post 5, but the metal is poor quality and bends too easily.  

I was considering this tool from Ali express, type 2
https://a.aliexpress.com/_mLdYgAS

Looks sturdy and like it will slot in well.
Otherwise I'll modify an old knife or blade with a slot as a prybar.
Does anyone think a lubricant like wd40 would help get them off, or is it a bad idea to get lube into a motor system?

Thanks to everyone for all the ideas.

That is a much sturdier looking tool, but don't think it will work for whoop props. You would have to be able to get the sides of the frame around both sides of the hub, maybe with biblades. Pinion gears tend to have a pretty wide gap to the motor, so you would have to get the prop up high enough to slot in the tool. And the center spoke that pushes against the shaft would have to match the shaft diameter (1 or 1.5mm) not sure if it comes in that size. 

However it does seem polycarbonates have a much high coefficient of thermal expansion than steel, don't know if blowing a hair dryer or heat gun on the prop hub will helps, but might be worth a try as long as you take care not to melt your whoop frame!!.

(30-Sep-2023, 03:36 PM)mstc Wrote: That is a much sturdier looking tool, but don't think it will work for whoop props. You would have to be able to get the sides of the frame around both sides of the hub, maybe with biblades. Pinion gears tend to have a pretty wide gap to the motor, so you would have to get the prop up high enough to slot in the tool. And the center spoke that pushes against the shaft would have to match the shaft diameter (1 or 1.5mm) not sure if it comes in that size. 

That's a good point about it having to bypass the prop blades and not working for tri blades. I'll resort to all kinds of measure, but I sure would love a reliable (and not painful) way of removing these. Maybe I can modify that tool to fit a tri blade...cut a slot for the spare blade to fit through or something...

Edited to say: Here's another removal tool, the prop popper.
Not available, but looks easy enough to make myself. Anyone use one and like it, or find it ineffective?

https://www.tinywhoop.com/products/prop-popper

That prop popper in Post # 20 looks pretty good and looks thin enough to get 
between the motor bell housing and the prop hub.

That massive tool from AliExpress is simply too big, I doubt that you could get the
thing between the motor and the prop. It just isn't thin enough. 

If using your fingers, you can put on a pair of those thin, rubber dipped, gloves
that fit like a second skin. I use these for a lot of things as they are pretty thin,
protect the fingers, and grip really well. 

I'm not sure what type of props you are using on your whoops, but just keep in mind that those prop removal tools with a "pin" on them are designed to go through a hole in the top of the prop hub and then press on top of the motor spindle to create some upward leverage. My whoops all have a closed top on the hub of the prop. There is no through-hole which means one of those "pin" tools wouldn't work. Only a forked lever tool will work.

I have a mob 6, mob6 hdzero, mob7hd, mob7 hdzero, and a fractal 65, and have props with through holes on all of them. Hopefully that makes it easy to fabricate an effective push/pull tool for them.

Step one of making the prop popper was modifying an old allen wrench to make the prybar. I thinned the short end of the key to a sharp taper and then used a Drexel cutoff wheel to cut a slot in it, just like the bottom of the prop popper.
I tested it on my mob7 and it is an excellent prybar. Will skip making the pin press part of the prop popper

(30-Sep-2023, 01:42 PM)FPVme Wrote: I was considering this tool from Ali express, type 2
https://a.aliexpress.com/_mLdYgAS
Looks sturdy and like it will slot in well.

I had just ordered all of them, but unfortunately they were not usable like that.
With some modifications, however, it has now finally worked.

That looks good. What is the diameter of the pin? Does it come with 1.5mm and 1.0mm pins?

(30-Sep-2023, 09:46 PM)mstc Wrote: That looks good. What is the diameter of the pin? Does it come with 1.5mm and 1.0mm pins?

it was unfortunately 2mm, so I had to file off a little.

I used the screw from the style 1 variation. Style 2 would have been better 1, 1.5 and 1.75mm, but there the thread was not metric and bigger.

   

I was thinking of an old-school IC extractor. It probably will require some modification. I just haven’t got around to getting an extractor. I used to have 3-4 but I haven’t thought about, or have seen, them in years.