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29-06-2022, 08:13 PM | #1 |
Lord of the Rings
Join Date: May 2013
Location: Norwich
Bike: M900sie
Posts: 5,815
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Woss this flappy fing?
I recently managed to find a pair of yokes from a M900ie (apparently) from year 2002.
It has the vaguely semi-circular bit of blued steel screwed to the bottom yoke that I've noticed on several other Monsters of that era. It seems to have come in about 2002 when the offset changed from 25 to 30mm and they had a little re-design at the same time, adding a peg hole stem top nut for instance. Question is what on earth does the flap of steel do?
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29-06-2022, 08:50 PM | #2 |
Fanactical volunteer
Join Date: Oct 2003
Location: Kent
Bike: M900
Posts: 9,031
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It directs air. Nothing else. Removable. Multistrada have them too.
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29-06-2022, 09:47 PM | #3 |
Registered User
Join Date: Jul 2014
Location: Portsmouth
Bike: M900
Posts: 1,510
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Heaven doesn't want me, and Hell is afraid I'll take over. |
29-06-2022, 09:58 PM | #4 |
Too much time on my hands member
Join Date: Jun 2007
Location: Forest Of Dean
Bike: S2r
Posts: 3,193
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It's just an early (and more subtle) version of the external wings you see on the MotoGP bikes
Given the huge downforce it must generate for the front end I'd be afraid to take it off
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"The final measure of any rider's skill is the inverse ratio of his preferred Traveling Speed to the number of bad scars on his body." Song of the sausage creature Last edited by Nickj; 29-06-2022 at 10:00 PM.. |
29-06-2022, 10:25 PM | #5 |
Registered User
Join Date: Dec 2010
Location: Oslo
Bike: S2r
Posts: 426
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Directs cool air over the horizontal, through to the vertical cylinder. Maybe it works.
Much cooler if it was an early down force wing. Maybe it is.... |
30-06-2022, 04:17 AM | #6 |
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Join Date: Jul 2003
Location: East London
Bike: Multiple Monsters
Posts: 9,712
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keeps water splash from front tyre off the lower bearing?
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30-06-2022, 08:27 AM | #7 |
Lord of the Rings
Join Date: May 2013
Location: Norwich
Bike: M900sie
Posts: 5,815
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Thanks to all for trying, but I'm sorry to say I don't believe any of you! (That sounds very horrid of me!)
Abdeckung translates as Cover, but it doesn't cover anything? As for air ducting; I don't think so, it's not big enough to do anything of any use. Possibly it might direct air onto the rectifier, if indeed it is on the front of the frame on models fitted with the "Abdeflap". The rec would be right in the direct airflow anyway. Maybe it could smooth out the air before it swirled under the tank into the air box? Splash guard? Good if there wasn't a gap all round under the bottom bearing! I've got a theory that it might be something to do with guarding a pinch zone in the event of a frontal impact, but that's a bit off the wall, although I suspect it's something legislative rather than practical. It seems a bit too robust for an air duct in steel when plastic would do that cheaper and lighter. As for blued steel, that's just nasty. It's new function is to take up room in my scrap bin. Happy to hear more theories..
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Last edited by Mr Gazza; 30-06-2022 at 08:29 AM.. |
30-06-2022, 08:49 AM | #8 |
Dismantled
Join Date: Feb 2006
Location: East Molesey
Bike: Multiple Monsters
Posts: 2,223
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Well according to Ducati it is know by two names Parapioggia Rain Cover or Paraspruzzi - Splash Guard
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"Political correctness is just intellectual colonialism and psychological fascism for the creation of thought crime" |
30-06-2022, 09:12 AM | #9 |
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Join Date: Jul 2003
Location: East London
Bike: Multiple Monsters
Posts: 9,712
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told you so
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30-06-2022, 10:34 AM | #10 |
Registered User
Join Date: Sep 2010
Location: Leics
Bike: M900
Posts: 2,844
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My old Guzzi had a similar looking flappy thing except it was made of rubber so was proper 'flappy' - now removed for a cleaner look and if that means I need to change the bearings more often then so be it.
That said, I've never changed them and have no idea if they've ever been changed? (in 43 years) plus it rarely sees rain so I'm probably OK...
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M900, 916, LeMans II. |
30-06-2022, 11:01 AM | #11 |
Lord of the Rings
Join Date: May 2013
Location: Norwich
Bike: M900sie
Posts: 5,815
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Thank you Kato, and Rob for telling me so..
What an absurd part to dream up, design an actually fit to a production motorcycle?? I'm going to see how long it takes me to find a way to re-cycle it into the new build.. I like the sound of a proper flappy rubber one DD..
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30-06-2022, 11:13 AM | #12 |
Fanactical volunteer
Join Date: Oct 2003
Location: Kent
Bike: M900
Posts: 9,031
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They make them now in plastic. It's cheaper in metal to create tooling in plastic.
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http://albies93m900.blogspot.co.uk/ |
30-06-2022, 05:37 PM | #13 |
Lord of the Rings
Join Date: May 2013
Location: Norwich
Bike: M900sie
Posts: 5,815
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I can't help thinking that the same amount of plastic added to the back of the mudguard would do more good?
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30-06-2022, 06:29 PM | #14 |
Fanactical volunteer
Join Date: Oct 2003
Location: Kent
Bike: M900
Posts: 9,031
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I still believe its airflow not water. That's what mudguards do. Now working on newer bikes with these strange short top tyre cover ( not a mudguard ) the front cylinders have so much corrosion on them. Rusted out valve cover bolts seized because water doesnt escape. Air boxes covered in grime and sandy grit. Anyhow it's a plate you can throw or keep or throw like a ninja and kill someone.
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