Break away bolt

[Luck as a Constant]

Couple of weeks ago I must have hit a stick or something. The brass bolt that comes stock on speed master rudder sheared off.
Looking for replacement. I've seen nylon used... Where can I find something locally? Home Depots assume?
Not interested in buying online and paying sgipping for a 30 cent piece.
Lmk thanks



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[Pau7060]

Shear Bolt

Ace hardware for brass shear bolts, nylon bolts may or may not be carried by them . For a online 30cent piece, that's when you buy a hand full .

[JimClark]

Mcmastercarr.com

[ray schrauwen]

Every time I use nylon, it breaks with the slightest twig or debris. I use 4-40 brass all the time and only gives way to hard boueys and other boats :-( .

[Luck as a Constant]

Yeah I was wondering if nylon would even hold up to the pressure against the rudder at 60 mph


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[kfxguy]

I'm needing to switch to brass myself. Been lazy, finally picked some up the other day. This is what happens to my
6-32 nylon screws (I'm using bigger than the 3mm stock nylon ones that came in the rudder) after a couple passes with my Rivercat. Btw, it's not broken, just stretched.

[johnl6676]

I probably have one if you can tell me the size and we can meet and I will give it to you

[ray schrauwen]

I also drill out the threaded Chinese rudders otherwise the brass can get sheared off and be stuck in a threaded hole. If you drill out a 3mm hole with 1/8th drill bit it will take a 4-40 bolt perfectly.

[Luck as a Constant]

Well, the speed master rudder uses a bolt and nut. It's not threaded at all so I just gotta grab something. John may have some or I can just toss a couple of zip ties or just drill it out to fit 6/32 which I grabbed at lowes this evening but are a bit too large.
They had 4/40 but not long enough.
I'll check ace hardware or Home Depot or whatever


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[Luck as a Constant]

I feel like 6/32 might be a bit too thick and not actually shear if I hit something.
I gotta wonder if the thinner bolt it comes with is that size for that reason


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[kevinpratt823]

The Ace hardware near me has all kinds of screws, including a drawer of miniature stainless machine screws, all lengths.
I have some brass ones in my box though, I think they are long enough. Kintec sells 2 different lengths, pretty sure I have some of the longer ones left.
FWIW, I don't think it really needs to be brass, if you hit something at 50-60 mph, a steele bolt is going to shear before anything else lets go.

[Luck as a Constant]

Yeah Kevin you could be rite about that, but Ide have a hard time believing a stainless bolt would break without causing some damage...
Let me measure the hole.
Any chance you would toda couple in an envelope and send em my way?


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[JimClark]

http://www.ebay.com/itm/4-40-x-3-4-Nylon-Socket-Head-Cap-Screw-100-pkg-A12010-/320568570579?pt=LH_DefaultDomain_0&hash=item4aa36032d3

http://www.ebay.com/itm/4-40-x-1-3-8-Nylon-Slotted-Pan-Head-Screw-100-pkg-S14146-/320795957774?pt=LH_DefaultDomain_0&hash=item4ab0edda0e

Also smallparts.com

[Luck as a Constant]

Ok so I just pulled a chunk of the original screw out, and it is in fact 4/40. Too bad lowes didn't have longer ones.
The hole itself is actually larger at 3 mm


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[JimClark]

You guys must have dirtier water than we do I use 2-56 on my 1/10 scale