Date:         Tue, 3 Aug 2010 21:54:46 -0700
Reply-To:     Alistair Bell <albell@SHAW.CA>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Alistair Bell <albell@SHAW.CA>
Subject:      Re: Swage Bit + Bolt for Pop Top Cable. Strong enough?
Comments: To: neil n <musomuso@GMAIL.COM>
In-Reply-To:  <AANLkTi=HNTMzopAYOYt-Ga32M3T4F61R_4U83H5=ZwvD@mail.gmail.com>
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Neil,

I'd be inclined to heat the stainless with torch to red and then
bend. You probably would be able to get away with bending cold, but
I'd heat it.

I noticed a guy on the samba ( "spitsandrovers"?) in response to your
query, said he never used a crimper, just vice grips. Well all I can
say is he must be crimping small and lightly loaded stuff. if you
have access to real crimper/swager, use it even if its an awkward
tool to get in position for your job. And besides, your swaging a
stainless fitting, not some soft alloy.

5mm bolt, kept tight, i think would be strong enough.

there is a surprising amount of force contained in the lift assembly,
its good your thinking about strength of materials.

good luck

alistair




On 3-Aug-10, at 9:03 PM, neil n wrote:

Hi all.

Trying to come up with a way to make a cable ( I'll use 3/32" OD)
for the
spring in pop top.

Thinking this: (PN 190025):
http://www.westernmarine.com/acrobat/blu190025.pdf  held with bolt
through
hole in lower arm where "Z" bit was. There might be enough room for a
nylon
locking nut on other side of arm. New part needs to be bent to follow
curve
at end of arm.

Would bending this stainless part ~ 45* weaken the metal to much to be
useable in this application?

Would a 5 mm bolt in that application be strong enough not to shear?

Any educated guesses?

On the other end of cable, I would drill out the stopper, pass cable
through, leave ~ 1/2" end exposed, crimp on a stopper. (though I'm
not sure
if there would be enough room between pivot pin and exposed cable +
crimp)


Neil.

--
Neil Nicholson '81 VanaJetta 2.0 "Jaco"

http://tubaneil.googlepages.com/

http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-
engines