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Rusty tank.

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668joe View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 668joe Quote  Post ReplyReply Direct Link To This Post Topic: Rusty tank.
    Posted: 14 Apr 2019 at 19:43
Hi all, just joined up as I need help. I have had stood in my garage a 1000 Daytona 1993 and I've just had it collected to get MOT'd and back on the road. Before it went off I had put a new battery on and turned it over a few times. I then proceeded to try and fire it up but realised it had no fuel. I then opened up the tank to see rust and more rust growing like moss!. I mentioned this to the chap as he took away the bike and after a few hours of him gaming i he called saying I need a new tank. He said he can give a clean but from his experience, it's had it. Does anyone know where I can get one or anyone had experience with tank sealing??. Regards. Joe.
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Chris950s View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Chris950s Quote  Post ReplyReply Direct Link To This Post Posted: 15 Apr 2019 at 09:35
Clean it out (someone on here recommended a de-rust product recently) but don't coat the inside unless the coating is ethanol proof. FD Motorcycles in Gt Dunmow strap tanks to a vibrating table and then put old nuts and bolts in the tank, it removes all loose rust, then flush out with paraffin. They don't coat the inside with anything and advised me that if you do you will not be able to weld any holes or splits in the future.
Chris and Karen - Essex
2011 Stelvio NTX, 1974 950S (750S replica still in bits), 1966 Triumph T100SS 52 years young this year!
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iansoady View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote iansoady Quote  Post ReplyReply Direct Link To This Post Posted: 15 Apr 2019 at 10:19
A technique I've read of (but have no experience of) is to strap it inside a cement mixer, put a couple of litres of water and a handful of old nuts & bolts inside then switch on and retire for a couple of hours.

That does need the tank to be well padded and for considerable confidence......
Ian
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George S View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote George S Quote  Post ReplyReply Direct Link To This Post Posted: 15 Apr 2019 at 20:19
I have removed rust from a couple of tanks successfully using the following method
Remove taps and blank holes.
Add white vinegar and nuts bolts screws etc. shake up tank leave a while shake up tank repeat few times leave over night. This will remove loose rust.
Mix washing soda or baking soda with water one table spoon per gallon and fill tank to brim.
Using iron or steel rod as sacrificial anode attach 12 volt battery positive wire to anode, negative wire to tank. Reaction will attract rust to anode leaving tank clean. the more rust the longer it takes, anything from one day to week or more.You might have to renew water mix. Flush out when completed.
I agree with the above and do not like the internal tank seal. Spray with WD40 when finished this protects until you are ready to use.
Cheap simple and it works.
George

1994 Nevada
1957 Cardellino 73cc
1961 Zigolo 110cc
1961 Stornello 125cc
Son's 1990 1000S to borrow any time
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ranton_rambler View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ranton_rambler Quote  Post ReplyReply Direct Link To This Post Posted: 16 Apr 2019 at 12:40
I have used the reverse electrolysis method too. I think it actually does a bit more than pulling the rust off the tank. The electrode gets "plated" onto the tank so no thickness is lost, unlike the more common acid wash with vinegar or Spirit of Salts.
The washing soda is available from Wilko for about £1.
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