Rusty spots underside of my tank

colinM · Two Stroke Sniffer Joined: 02 Oct 2020 Karma :

Was doing a coolant change on my bike so I had to lift the tank and take some panelling of to get at it.
I Noticed some rusty spots on the underside of my tank and was wondering what the best way to deal with this is? As it's on the underside of the tank is there some sort of rust inhibitor I can just paint on without having to drain the tank and take the whole thing off or is that just wishful thinking ?

jaffa90 · World Chat Champion Joined: 06 Apr 2016 Karma :

In my experience rust spots lead to pinholes Shocked

.

Tdibs · Traffic Copper Joined: 16 Jan 2015 Karma :

Very common. Either slow it down with some form of rust blocker. Or, sand, use rust converter, anti rust primer/hammerite.
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Previous : 09 Vanvan 125| 02' Sv650s || Current: 1999 Xj600n | 1992 DR650 RSE | 2005 Fazer 1000

A100man · World Chat Champion Joined: 19 Aug 2013 Karma :

What bike? pictures needed..
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Now: A100, GT250A, XJ598, FZ750

Then: Fizz, RS200, KL250, XJ550, Laverda Alpina, XJ600, FZS600

colinM · Two Stroke Sniffer Joined: 02 Oct 2020 Karma :

Tdibs · Traffic Copper Joined: 16 Jan 2015 Karma :

Yep, condensation trap, some with foam padding can be quite bad for it. Ive lightly sanded and painted one of mine, and just generous amounts of XCP/ACF wiped on the others.
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Previous : 09 Vanvan 125| 02' Sv650s || Current: 1999 Xj600n | 1992 DR650 RSE | 2005 Fazer 1000