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englishstiv
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Post subject: Radiator Fan failed due to parts fatigue. Posted: Mon Jan 25, 2016 9:24 pm |
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paso grand pooh-bah |
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Joined: Wed Apr 09, 2008 9:57 pm Posts: 1097 Location: Manchester, England.
model: 907 I.E.
year: 1992
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Look what fell off my 907ie today after a 120 mile ride. Fortunately it decided to throw itself off when parked up on my drive at the end of the ride. I would check your fans folks as it seems to be fatigue that caused it.
The actual central spinner shell has come away from the plastic fan housing which has become brittle and then cracked and shattered this caused the fan to drop off the motor housing.
The white paste you can see is just corroded alloy. The actual plastic covering has become brittle and warped and let go. It is essentially the fan housing that has corroded and obviously the hi velocity spinning has caused it to come loose. I have cleaned it out and had hoped to press it back in and use a two pack resin glue to attach. The aperture has though shrunk so unsuitable. The fan motor is in perfect order. Since I now use waterless coolant the fan does not really activate that much apart from when I come to a standstill for longer than 5 minutes.( normally at the end of a ride).
You can see the three cross head screws that would be holding the fan plate and fan onto the motor. As a fix you could easily rivet or screw precisely where the three black lugs are on the inner fan plate housing or glue it securely, however as I cannot sit the fan back into the plate housing due to the plastic shrinkage it's a non runner.
Luckily I have a spare which I swapped over.
I now have a spare motor and housing, will be interesting to see if this is interchangeable with any others in the Ducati range.
_________________ DUCATI 907ie STIMSON SCORCHER 3 WHEELER CZ 175 Sport.
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Thebenelliman
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Post subject: Re: Radiator Fan failed due to parts fatigue. Posted: Tue Jan 26, 2016 8:40 am |
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Joined: Sun Jan 10, 2016 4:13 pm Posts: 87 Location: Aston Abbotts,Aylesbury,Bucks
model: 907 I.E.
year: 1992
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Hi Sti sounds like you were quite lucky it did not cause more damage! I took my 30 year old Benelli for an mot many years ago and the rear brake hose split during the test! I subsequently changed all the hoses and seals it was a lucky escape. My 907ie is 23 years old ,next month or so I will remove the fairing and give it a good check over.
_________________ The Benelliman 1992 907ie 1981 Benelli 900 Sei 1989 Benelli 900 Sei 1976 Benelli 125 Enduro 1981 Benelli 250 2c 1976 Benelli 250 Quattro
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Derek
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Post subject: Re: Radiator Fan failed due to parts fatigue. Posted: Tue Jan 26, 2016 9:39 am |
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paso grand pooh-bah |
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Joined: Thu Nov 03, 2011 10:13 am Posts: 769 Location: Scotland
model: 907 I.E.
year: 1994
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I think the corrosion of the alloy is the root of the problem. It has effectively pushed the plastic housing off of the metal motor housing. I'd think a fan off most of the other Ducati models could be adapted as a replacement.
_________________ 1994 907ie 2017 Supersport 939 2015 Scrambler Classic 1982 Pantah 500SL (now sold)
Scotland
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Duc750
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Post subject: Re: Radiator Fan failed due to parts fatigue. Posted: Wed Jan 27, 2016 5:31 pm |
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Joined: Mon Apr 03, 2006 12:00 am Posts: 373 Location: Northampton UK
model: 907 I.E.
year: 1993
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looks like you've had the fan fouling issue on the rev counter cable as well judgung from the blades
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englishstiv
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Post subject: Re: Radiator Fan failed due to parts fatigue. Posted: Wed Jan 27, 2016 8:04 pm |
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paso grand pooh-bah |
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Joined: Wed Apr 09, 2008 9:57 pm Posts: 1097 Location: Manchester, England.
model: 907 I.E.
year: 1992
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_________________ DUCATI 907ie STIMSON SCORCHER 3 WHEELER CZ 175 Sport.
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Duc750
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Post subject: Re: Radiator Fan failed due to parts fatigue. Posted: Wed Jan 27, 2016 8:12 pm |
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Joined: Mon Apr 03, 2006 12:00 am Posts: 373 Location: Northampton UK
model: 907 I.E.
year: 1993
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its the rev countr cable - it rubs on certain lock positions (only with the fan running)
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ducinthebay
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Post subject: Re: Radiator Fan failed due to parts fatigue. Posted: Fri Jan 29, 2016 11:48 pm |
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paso grand pooh-bah |
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Joined: Sat Sep 03, 2005 12:00 am Posts: 1323 Location: SF Bay Area
model: 750 Sport
year: 1990
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do you use Simple Green to clean your bike?
The citrus cleaner does a fantastic job of cleaning, but must be rinsed thoroughly, or it will oxidize aluminium bits rather well. It will certainly create the problem you are seeing. That, and the salt air.
Cheers, Phil
_________________ Duc in the Bay 1990 750 Sport x2-Rosso Blanko (900ss copy) & Nuovo Nudo (Scrambler project) 1991 907 -mostly stock 2002 ST4s - Lots of mods.
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englishstiv
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Post subject: Re: Radiator Fan failed due to parts fatigue. Posted: Sat Jan 30, 2016 3:45 pm |
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paso grand pooh-bah |
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Joined: Wed Apr 09, 2008 9:57 pm Posts: 1097 Location: Manchester, England.
model: 907 I.E.
year: 1992
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_________________ DUCATI 907ie STIMSON SCORCHER 3 WHEELER CZ 175 Sport.
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ducinthebay
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Post subject: Re: Radiator Fan failed due to parts fatigue. Posted: Sat Jan 30, 2016 5:04 pm |
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paso grand pooh-bah |
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Joined: Sat Sep 03, 2005 12:00 am Posts: 1323 Location: SF Bay Area
model: 750 Sport
year: 1990
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WD-40 is a great product, and pretty good at protecting stuff. I always start the cleaning process by spraying the entire bike with WD-40, get lunch or a coffee, then apply Simple Green to dirty bits followed by a strong hose. I don't know what myth there is around WD-40, besides it surely isn't a very good lubricant for very long. it will make a hinge quiet, but only for a short time. needs to be followed with real oil. A bit of WD-40 on that fan hub would have helped it live a bit longer, but it isn't a match for salt.
Cheers, Phil
_________________ Duc in the Bay 1990 750 Sport x2-Rosso Blanko (900ss copy) & Nuovo Nudo (Scrambler project) 1991 907 -mostly stock 2002 ST4s - Lots of mods.
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Duc750
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Post subject: Re: Radiator Fan failed due to parts fatigue. Posted: Tue Feb 02, 2016 6:33 pm |
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Joined: Mon Apr 03, 2006 12:00 am Posts: 373 Location: Northampton UK
model: 907 I.E.
year: 1993
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"Muc Off" does the same to aluminium parts too - nasty stuff if you're not careful
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higgy
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Post subject: Re: Radiator Fan failed due to parts fatigue. Posted: Wed Feb 03, 2016 11:21 pm |
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paso grand pooh-bah |
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Joined: Tue Jul 29, 2008 9:50 pm Posts: 3259 Location: Hilltown,Pennsylvania
model: 906 Paso
year: 1990
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PB Blaster and Seafoam and simple green here WD-40 has its uses but attracts more dust and is on the toxic list
_________________ Ducati,making mechanics out of riders since 1946 There's no problem so bad that a little fixing can't make it worse! : ) If it ain't broke keep fixin it till it is 88 750 90 906 92 907ie
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Duc750
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Post subject: Re: Radiator Fan failed due to parts fatigue. Posted: Thu Feb 04, 2016 8:53 pm |
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Joined: Mon Apr 03, 2006 12:00 am Posts: 373 Location: Northampton UK
model: 907 I.E.
year: 1993
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