Ducati expanding tank ? - Ducati.ms - The Ultimate Ducati Forum
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post #1 of 27 (permalink) Old Jan 11th, 2017, 7:36 am Thread Starter
Nun
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Ducati expanding tank ?

Is the expanding tank still and issue in the 2016 DVTs ? I Just heard of it now, is there something I should do to prevent this ?


Bike is currently stored with a full tank and some stabil

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post #2 of 27 (permalink) Old Jan 11th, 2017, 8:00 am
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If it is plastic, made by acerbis, yes.


'77 RD-400
'03 FLSTF
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post #3 of 27 (permalink) Old Jan 11th, 2017, 8:15 am
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There is no reason that I know of to believe it is any different than it ever was. I use E0 as much as possible, and always make it a point to not let the bikes sit for any time with E10.

14 Multi S Touring, 06 Monster S2R1000, 15 Yama FJR1300 06 Suzuki DRZ400 (fs)
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post #4 of 27 (permalink) Old Jan 11th, 2017, 8:50 am
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From experience I can tell you two weeks is too long. Please don't tell me this is not fixed yet ?

'96 Ducati SS900CR, '07 S4RS, '06 Busa, '77 Bonny,
'00 Superglide, '85 Sportster, '78 SR500
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post #5 of 27 (permalink) Old Jan 11th, 2017, 9:11 am
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Well the new designs got metal tanks, Monster 1200 and Scrambler but think the old ones are still going to get caught in the tangled web of ethanol and the corn industry.


'77 RD-400
'03 FLSTF
'06 Sport 1000 Yellow
'04 XL1200R
'07 999s
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post #6 of 27 (permalink) Old Jan 11th, 2017, 9:24 am
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As far as I know, the MTS and other recent models should be OK for this.

There are two plastics that the U.S. DOT allows to be used for fuel tanks: HDPE and PA6.
HDPE cannot be smoothly finished and painted, which is why Ducati (and others) used PA6 initially.

Unfortunately for them, one of the two government-mandated plastics (PA6) is not compatible with the government-mandated fuel with ethanol. Yay for government.

This is a problem with tanks that were made to be finished visually; mainly mid-2000's Monsters and Sport Classics. More recent bikes (M696, M796, M1100, HM, etc.) use HDPE for the tank material, and plastic covers for cosmetics. This has posed far less of a problem. I have not heard of MTS bikes having much, if any, of a tank expansion problem.

Don't blame this all on Ducati; the government made this far worse of a problem than it needed to be.

PhilB
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post #7 of 27 (permalink) Old Jan 11th, 2017, 9:48 am
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No issue yet on my 15... and while I do try to avoid ethanol it's pretty impossible around here (only a couple of stations with ethanol free 93)
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post #8 of 27 (permalink) Old Jan 11th, 2017, 11:07 am Thread Starter
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I haven't had to lift the tank on the bike yet, If it's plastic, then leaving it full shouldn't be necessary and I can go ahead and ride 300 miles, leave a littel fuel / stabil in there and it wont expand on me.

I did remove the charcoal box so it has some extra breathing room, maybe that helps as well.

I don't have the resources to find out who makes the thank but I'll look for a polymer stamp on it if it's plastic

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post #9 of 27 (permalink) Old Jan 11th, 2017, 11:17 am
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I have a 2012 MTS and have no issues with the gas tank.
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post #10 of 27 (permalink) Old Jan 11th, 2017, 12:24 pm
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I've only read of a handful of reports of -possible- tank expansion since the w/c multis came out, and none to the point the tanks were nonfunctional. One or two reports of broken tabs on tank covers, which could have been from something else, and a few reports of the tank filler looking 'uneven', which to my mind is nitpicking.

If there is still a problem with swelling, it is nowhere near the endemic problem it was with the earlier tanks. I'm fortunate in that I can typically ride year round in North Carolina. But when the bikes have had to sit for a while I've never bothered about how much E10 fuel I leave in the tanks or for how long, and have had no troubles.

'12 Multi Touring these days
Yes, I do miss my air cooled multi...
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