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Old Jun 04, 2001, 01:36 PM
small electrics r BIG FUN
Iowa
Joined Aug 2000
4,317 Posts
6v 400 mounting hole thread size

I need to get some screws to mount this motor. What size do I get for laser cut plate mounting ?

Thanks

Al
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Old Jun 04, 2001, 02:20 PM
Spritual Pilot
Silicon Valley, CA
Joined May 2001
677 Posts
Al,

The size of motor mount screw is 25mm (radius).

JN
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Old Jun 04, 2001, 02:25 PM
small electrics r BIG FUN
Iowa
Joined Aug 2000
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Thanks JN

Al
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Old Jun 04, 2001, 02:48 PM
Registered User
N. Staffs, UK
Joined Jan 1997
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Misplaced decimal point somewhere ? 25mm is nearly 1 inch.

The screw size is actually M2.6 i.e. 2.6 mm. And before you ask, you can get them from hobby stores that do cars because Kyosho R/C cars are held together with them.

(I must remember to put this in the FAQ)

Steve
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Old Jun 04, 2001, 03:56 PM
Spritual Pilot
Silicon Valley, CA
Joined May 2001
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Oops sorry,

diameter, not radius.

JN
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Old Jun 04, 2001, 04:06 PM
Spritual Pilot
Silicon Valley, CA
Joined May 2001
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sorry, multiple mistakes.

I thought it is 2.5mm and this size worked for me. What happened is that I asked the same question in my LHS and they said it is 2.0mm, and I bought it. However, it turned out to be too small. I baught 2.5mm screw then and it worked (my LHS didn't refund because the bag was opened). I don't think most hobby shop has an export like people who we can easily find in this discussion group. I prefer to ask here although my LHS is near me.

Thanks,

JN
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Old Jun 04, 2001, 04:19 PM
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Marietta, GA
Joined Jun 1999
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Kirk @ New Creations sells 2.6mm screws.
..a
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Old Jun 04, 2001, 06:21 PM
small electrics r BIG FUN
Iowa
Joined Aug 2000
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Thanks folks

When I got to town, 25mm was not going to work, and of course small town stores have a selection to be ashamed of . I found something like 3-48 sae that seems to work. They got tight .
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Old Jun 04, 2001, 09:20 PM
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Rudderman98's Avatar
United States, WA, Sumner
Joined Oct 2000
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I usually tap mine out to a size in SAE to save me the trouble of locating these metric screws.


[This message has been edited by Rudderman98 (edited 06-04-2001).]
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Old Jun 05, 2001, 07:43 AM
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Canada
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2.6mm screws.. in a variety of lengths.. are available at Electronics supply stores .. generally about $1 for 50!
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Old Jun 05, 2001, 03:30 PM
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I think the 6 means 6mm thread length.

Paul
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Old Jun 05, 2001, 04:44 PM
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Jim Ryan's Avatar
Cincinnati, OH USA
Joined Oct 2000
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Quote:
Originally posted by jnyoun:

The plan of 'ace simple 400' shows that the hole size of 400 motor mount is 2.5mm. More accurately, it says 2.5mm x 6 bolts (in practice, two holes seems enough though). Is it a typo or i am missing something ?

The mounting holes in Speed 400 motors are actually M2.6. Lots of people use M2.5 instead because they're easier to get hold of, and they have the same thread pitch as the 2.6mm screws; they just fit a little looser, which may or may not be a problem for you. My fleet uses both kinds indiscriminately because I have a huge bag of both sizes.

Jim
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Old Jun 05, 2001, 05:00 PM
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San Mateo, Ca , USA
Joined Jun 2000
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I don't know who came up with the M2.6. I was told it is hard to find even in Europe. Not a standard hardware(DIY) store item. I think you can use a 3-48 SAE screw for it but the action it is reversable.

Brian
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Old Jun 05, 2001, 05:41 PM
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Dayton Intl, Ohio, United States
Joined Jan 2000
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They're not that hard to find, I have them in stock for 10/$1.00

Azarr
www.azarr.com

Quote:
Originally posted by bhchan:
I don't know who came up with the M2.6. I was told it is hard to find even in Europe. Not a standard hardware(DIY) store item. I think you can use a 3-48 SAE screw for it but the action it is reversable.

Brian
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Old Jun 05, 2001, 06:52 PM
Spritual Pilot
Silicon Valley, CA
Joined May 2001
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> Original message:
> I think the 6 means 6mm thread length.
> Paul

Thanks for clarification. I thought it's
the number of holes (because the plan has a picture of the mounting plate with 6 holes.).
Now, it is clear to me why x is there.

JN
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