Rudder Pins?

Tony Jacuzzi · Dec 5, 2018

What are the rudder pins made of on Speedmaster 40/60 rudders is it drill rod or ? I dropped the pin somehow during a heat last year and need to replace it and would like a few spares. Thanks Tony J

Jim Allen · Dec 5, 2018

Tony,

I do not know what Speedmaster is using. However, I have used standard dowel pins, M-2 steel HHS blanks & piano wire, all 1/4' diameter. Never had any of these break even when shearing a 6-32 stainless steel rudder shear pin. I drill the 1/4" size pins with a 9/64" carbide drill to reduce the weight.

JA

.625 bore barrel carburetor on QD 271.jpg

Mark Simmons · Dec 5, 2018

I used stub shaft for a quarter inch drive flex cable off of gas boat

Timbo Whalen · Dec 5, 2018

.187" OD Seamless Hollow Alignment Pin- precision ground, light weight.

Or, .187" OD 18-8 Stainless Steel Pull-Out Dowel Pin.

FloridaScaleBoater · Dec 5, 2018

Tony Jacuzzi said:
What are the rudder pins made of on Speedmaster 40/60 rudders is it drill rod or ? I dropped the pin somehow during a heat last year and need to replace it and would like a few spares. Thanks Tony J

Tony,

I could be wrong, but don't think I am. If you are referring to the pivot pin on a Speedmaster rudder, I'm pretty sure that pin is 3/16" and uses the oil lite bushings that we used to use in the struts. Think the OD of the bushings are 1/4" ID of 3/16"

Steve Seebold · Dec 5, 2018

I use 3/16x1 1/4 inch stainless steel dowel pins that I get from McMaster.

https://www.mcmaster.com/90145A512

They’re about $9.25 for a box of 20 pins.

Terry Keeley · Dec 6, 2018

I'm pretty sure they're using dowel pins, very hard. I like 0-1 drill rod, if I have some and I'll shoot you a bit. Then you can part it off on your new lathe!

Rudder Pins?

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