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Author Topic: Plastic Tank problems: Discussion thread, see info thread sticky for updates  (Read 713816 times)
ducatiz
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« Reply #2850 on: September 25, 2015, 05:03:05 PM »
Quote from: Speeddog on September 23, 2015, 10:31:17 AM
I've got an '05 S2R800 tank that I've had hanging from the rafters in my shop for ~5 years.
I'm in SoCal, we've averaged 10" of rain per year during that time.
So it's pretty f'n dry.

It's still ~5mm too wide at the tank rubbers.

that is probably within normal variances.  the tanks deform a bit from heat too.
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« Reply #2851 on: September 25, 2015, 05:06:03 PM »
Quote from: ducatiz on September 25, 2015, 05:03:05 PM
that is probably within normal variances.  the tanks deform a bit from heat too.
Are we talking lawyer tolerances/variances...

or mechanic tolerances/variances? Grin
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« Reply #2852 on: September 25, 2015, 05:29:32 PM »
Quote from: ducpainter on September 25, 2015, 05:06:03 PM
Are we talking lawyer tolerances/variances...

or mechanic tolerances/variances? Grin

probably both, but i've found the measurement to vary a bit.  the tank is flexible and the rubber frame stops have slots that allow them to move about 8-10mm to account for minor variance between tanks & frames.
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« Reply #2853 on: September 25, 2015, 05:38:23 PM »
Quote from: ducatiz on September 25, 2015, 05:29:32 PM
probably both, but i've found the measurement to vary a bit.  the tank is flexible and the rubber frame stops have slots that allow them to move about 8-10mm to account for minor variance between tanks & frames.
...and that is the way the steel tank parts were manufactured also.

It depends if the tank is 5 grand over nominal or maximum...

no?

...and if the max allowable on the rubbers only allow for + or - 4 or 5 mm it might be an issue.

Wouldn't you agree counselor? Grin
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« Reply #2854 on: September 25, 2015, 07:33:51 PM »
It's 5mm too wide with the rubbers pushed all the way inboard.
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« Reply #2855 on: September 26, 2015, 09:09:35 AM »
Quote from: Speeddog on September 25, 2015, 07:33:51 PM
It's 5mm too wide with the rubbers pushed all the way inboard.

Yup.  That's not good. 
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« Reply #2856 on: September 14, 2021, 06:47:55 PM »
I know I’m 190 pages behind in this thread, but I’m on my second tank. Never caswell coated, I just completely drain the tank with “the ultimate siphon” after every time I ride. I call it the bologna defueling procedure. It seems to work, when the tank expands I just let it sit empty for a while and it goes back to normal.
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« Reply #2857 on: September 15, 2021, 01:06:23 PM »
I followed IZ's instructions to the letter, for a tank that sat without fuel in it for quite a few months to a year I can't remember. But the thing was dry. Washed it out best I could, hot water & Dawn. Let dry again. Cut the inside tank surface with xylene as IZ instructed. Coated it with Caswell after mixing a little xylene in to the mix as per IZ's instructions. No problems after about 3 years or so, or none that I notice with my naked eye. The space between the front of the tank and the ignition has remained the same. Not sure/ have not officially quantified the tank width but it looks the same. I even let fuel sit in it over the winters which I know I should not do but I do it anyway because I'm lazy. No problems. Going to stop leaving fuel in it because it's just so wrong but I have seen no problems at all. The coating process is a pain but it worked out for me. Take thy time and do it right, and your results might be same.
« Last Edit: September 15, 2021, 01:08:06 PM by booger » Logged
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« Reply #2858 on: September 15, 2021, 02:10:54 PM »
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