How do you? Is it normal?

[hamitduk]

I have the two rotors spaced out and need to close the gape, when I started I could pull the plates apart and screw in the nuts. Not any more and I can't get a wrench close to the nuts. When I do I have to ply it back out. I'm no 98 Lbs weakling (for you not living in the US 44.5 Kilo). Must i make a Al or Ti wrench?

Hami

P.S. somebody fix the double space issue in Preview, proper English you put 2 spaces after a period, well when you do that here you get a "&nbsp", and me being a bit anal I must go fix them

[Flux]

Sounds as though you forgot to fit jacking screws. If I remember correctly you have small discs so you will probably not be able to adjust anything without removing one rotor, that is where the jacking screws come in.

You could make a non magnetic wrench but it may be simpler to just remove the top rotor, adjust the spacers and put it back.

Flux

[brokengun]

Using a rubber hammer might help you too. I'd try and put a piece of wood that is pretty strong in between them and use some leverage and or the rubber hammer to encourage the plates to separate.

Good luck and try to keep your fingers clear.

[hamitduk]

I have never seen a ref to "Jacking Screws" here, did not believe the field was going to be that strong. I made all the precautions needed, but was mildly awed, I did the math, but seeing is believing. I found a bit of Al and will make a wrench for the task.

Hami

[JW]

Flux,

 Uknow, I tried a bunch of search critera(the boards search engine) rotor gap, rotor bolts, etc. Nothing came up, I got 0 results for almost all of my search terms.

Then I tried 'jacking screws' tonns of stuff came up. I was intitally looking for a picture of the leveling nuts used to control rotor gap. I found this using your search terms.

http://www.fieldlines.com/story/2005/12/30/161542/59

Also, I did a search of the board using 'divits' as the keyword. Interesting results.

Hami,

 Take sometime to follow the link I have provided for you. You will see a clear illustration of the jacking screws. You should be able to see from the pictures that they use a steel wrench to adjust the gap between the rotors.

JW

[hamitduk]

Love the ref to "divits", my next addition is a wood shop, then I'm going to work on a CNC Plasma/Mill. Should be fun.

I think I might have spelled Jacking Screw wrong. I do have two, I was just awed by the strength of the field, I made a Al wrench, it is effected by the field, thing are generally considered not magnetic, Like Duct tape. But I don't even get metal filling sticking to the out side. I can put a set a washer over the spacer bolt holes and it dose not stick and it will stay there (gravity), the field is only between the mags, This is Cool!

Hami

[TomW]

hami;

I made a Al wrench, it is effected by the field

Thats from the eddy currents in the aluminum from it moving in the field. It creates an opposite magnetic field in the wrench [a conductor] so they tend to attract. Only if moving, tho. If you have an extra mag from the build set it on an aluminum pan or sheet and shake it around the magnet moves slowly as it follows the field it creates in the pan. Thats how magnetic brakes work. Or something like that.

Interesting phenomenon.

Tom

[hamitduk]

AW, but explain the Duct Tape? Well Go-rilla Tape to be correct. There might be a small bit of Metal in the manufacturing?

Hami

[TomW]

hami;

Eddy and his Currents are induced in any conductor. Duct tape might have a metallic component?

Beyond that, I have no clue why the repair kit on a roll [duct tape] would react.

Magnetism is a mysterious force.

Tom