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Offline john348

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tarnished nuts
« on: December 29, 2013, 12:38:29 pm »
Ok and bolts.

I have just washed the trophy and polished it (well it is Christmas) and noticed some of the nuts and bolts are getting tarnished.  I use the muc off after spray (with ptfe) over the whole bike and especially engine and then polish the fairing etc.  The fixings holding the screen especially seem to be weathering badly.

I will take them out and Polish them (solvol autosol?) But any suggestions would be welcome as this probably will not protect them from future attack.

I noticed the brake bolts seem a bit bad as well so I will take each one out and grease.  On the tiger (2005) knave had lots of problems with siezed brake pins so am a bit worked about future servicing.

There USA lot of salt around at the moment.

Thanks
Job 

Offline Original Scourge

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Re: tarnished nuts
« Reply #1 on: February 21, 2015, 05:25:16 pm »
*Originally Posted by john348 [+]
Ok and bolts.

I have just washed the trophy and polished it (well it is Christmas) and noticed some of the nuts and bolts are getting tarnished.  I use the muc off after spray (with ptfe) over the whole bike and especially engine and then polish the fairing etc.  The fixings holding the screen especially seem to be weathering badly.

I will take them out and Polish them (solvol autosol?) But any suggestions would be welcome as this probably will not protect them from future attack.

I noticed the brake bolts seem a bit bad as well so I will take each one out and grease.  On the tiger (2005) knave had lots of problems with siezed brake pins so am a bit worked about future servicing.

There USA lot of salt around at the moment.

Thanks
Job

I know that this is an older post, but I'm sure others question this phenomenon also.  It is the nature of steel bolts in aluminum engines (or other parts) to corrode.  Anytime I pull one out, I make the decision to either knock off the corrosion with a wire brush or replace it with a stainless steel bolt.  Here's a tip to help prevent or delay further corrosion - If the bolt does not require thread-locker, put a layer of pipe joint compound (aka "pipe dope") on the threads before screwing it back in.  It will slow or stop the development of further corrosion and will also act to resist the bolt from becoming loose due to vibration.

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2013 Triumph Trophy SE
2013 Triumph Bonneville SE
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Past Bikes  -  1980 Honda Cb750c & a 1970 BSA Lightning.      I'm a lucky man!

Offline Coconut

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Re: tarnished nuts
« Reply #2 on: February 21, 2015, 05:49:53 pm »
There's nothing worse than having your Nuts tarnished  :087:

I "think" those bolts holding the Screen on ARE Stainless Steel ....
( at £3.44 each RRP they SHOULD be ! ), but they do still seem to corrode ? !

( That "American" salt is a real problem though ! :164:    :745: )


Offline Philpat

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Re: tarnished nuts
« Reply #3 on: June 02, 2015, 09:47:11 am »
There is Stainless and good Stainless. Most of the so called Stainless bolts on the Trophy are magnetic! I good sign of cheap Stainless. Generally Stainless comes in two qualities A2 and A4.
A2 will rust in an aggressive environment i.e. salt whilst A4 is marine grade and will not rust ever, so if replacing fittings order A4 but are double the cost!

Phil
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Offline Bludy L

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Re: tarnished nuts
« Reply #4 on: June 07, 2015, 12:08:25 pm »
Dang it Coconut, you beat me to it!!!
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Re: tarnished nuts
« Reply #5 on: June 07, 2015, 01:52:56 pm »
As told by a welding electrode manufacturer's welding engineer once "technically, there's no such thing as stainless steel, since some chemical will cause discoloration in any of the grades".  Now, that was a long time ago and now there are some more exotic duplex type materials being made these days so it may not be true.  I'm a little out of touch now, but I bet someone on this forum is up to date and knows the facts.
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Offline seadog

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Re: tarnished nuts
« Reply #6 on: June 07, 2015, 02:24:40 pm »
A lot of technical data. But really all people want is shiny nuts  :745: :745:

seadog
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Re: tarnished nuts
« Reply #7 on: June 07, 2015, 03:56:46 pm »
Not too interested in a wire brush to get that effect though.  :745:
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