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SK3 Motor Bolt Pattern


#1

Anyone have the bolt pattern for a Turnigy SK3 63mm series (sk3 6374 149kv or 190kv)

Thanks


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#2

They run either 44mm or 30mm. I think they are 30. I have never used an SK3 to know. Someone else would have to confirm.


#3

I can measure it later when I am near my board if no one else replies before then.


#4

I just measured mine at 31.5mm center to center in a square pattern.


#5

Like this?


#6

That is correct. I’ve heard of some people using 32mm spacing successfully, but using a pair of nice calipers on my sk3 and tacon, it really looks like 31.5mm. Anyone know what the standard spacing should be?


#7

The pages on hobbyking for that entire series specifies 32mm bolt spacing.


#8

Do you have a link Brandon. I could not find any specs for those series.


#9

The proper way to measure is diagonally. Not side to side. They have 44mm hole spacing.


#10

What does hobbyking specify when they say “screw spacing” then?


#11

They are the original reason for the confusion. They don’t know the difference either.


#12

I’ll take your word for it then, 44mm on the diagonal.


#13


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#14

ahaa, and 44/sqrt(2) = 31.1 on the square sides! :smiley:


#15

I confirm the 44mm on diagonal, about 150 fitting Motormounts cant be wrong :wink: