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YB11 radiator cap
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Falcolion



Joined: 20 May 2012
Posts: 138
Location: Brookyn, NY

PostPosted: Thu Aug 09, 2018 5:18 am    Post subject: YB11 radiator cap Reply with quote

I am wondering if anyone figured out which radiator caps will fit YB11.

There is no way that Bimota used proprietary radiator caps. It would completely financially and technically unreasonable to do so.

Any knowledge and ideas would be appreciated
thanks
Vlad
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2016 Suzuki GSXR750 TRACK BIKE
2010 Husaberg FE390
2008 BMW HP2 Sport
2006 Bimota SB8K Santamonica
2005 Benelli Tornado Tre
2004 Moto Guzzi V11 Coppa Italia
2003 Aprilia SL Falco 10000R
1997 Bimota YB11 Superleggera
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2bims



Joined: 03 Apr 2010
Posts: 6207

PostPosted: Thu Aug 09, 2018 8:58 am    Post subject: Reply with quote

Isnt the radiator and the fans taken straight from the Thundrace Yamaha? And thus so would be the rad cap?

Check all these parts out...they all seem YB11 familiar

https://www.ebay.co.uk/sch/i.html?_from=R40&_trksid=p2057872.m570.l1313.TR12.TRC2.A0.H0.Xyamaha+thunderace+radiator.TRS0&_nkw=yamaha+thunderace+radiator&_sacat=0

And then of course you could check Yamaha Dealers also
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Jonny B Bad



Joined: 05 Dec 2009
Posts: 429
Location: NE London

PostPosted: Thu Aug 09, 2018 5:09 pm    Post subject: YB11 rad cap Reply with quote

SB6R also uses the Thunderace rad, but has a remote rad neck, for access. Bimota used a neck and associated cap that were nothing to do with the Thunderace. I couldn't find a similar cap, so ended up getting a neck made up, that would take a readily available cap.
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Falcolion



Joined: 20 May 2012
Posts: 138
Location: Brookyn, NY

PostPosted: Thu Aug 09, 2018 5:33 pm    Post subject: Re: YB11 rad cap Reply with quote

Jonny B Bad wrote:
SB6R also uses the Thunderace rad, but has a remote rad neck, for access. Bimota used a neck and associated cap that were nothing to do with the Thunderace. I couldn't find a similar cap, so ended up getting a neck made up, that would take a readily available cap.


That is exactly the case. Radiator is a Thunderace but it has a remote Bimota specific Aluminum pipe with the cap
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2016 Suzuki GSXR750 TRACK BIKE
2010 Husaberg FE390
2008 BMW HP2 Sport
2006 Bimota SB8K Santamonica
2005 Benelli Tornado Tre
2004 Moto Guzzi V11 Coppa Italia
2003 Aprilia SL Falco 10000R
1997 Bimota YB11 Superleggera
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rudadue



Joined: 24 Apr 2015
Posts: 17

PostPosted: Thu Aug 09, 2018 8:27 pm    Post subject: Reply with quote

Hi guy if you look at radiator filler neck adapter there are a few on eBay around £22 similar to original might help regards
[/img]
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Falcolion



Joined: 20 May 2012
Posts: 138
Location: Brookyn, NY

PostPosted: Thu Aug 09, 2018 8:38 pm    Post subject: Reply with quote

rudadue wrote:
Hi guy if you look at radiator filler neck adapter there are a few on eBay around £22 similar to original might help regards
[/img]


Do you have a link to an eBay?

Thanks
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2016 Suzuki GSXR750 TRACK BIKE
2010 Husaberg FE390
2008 BMW HP2 Sport
2006 Bimota SB8K Santamonica
2005 Benelli Tornado Tre
2004 Moto Guzzi V11 Coppa Italia
2003 Aprilia SL Falco 10000R
1997 Bimota YB11 Superleggera
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rudadue



Joined: 24 Apr 2015
Posts: 17

PostPosted: Fri Aug 10, 2018 4:35 pm    Post subject: Reply with quote

Hi Vlad not to savvy with the links etc but if look for jsdautoparts on ebay they/re location 85043 united states hope this helps regards
https://www.ebay.co.uk/itm/New-Radiator-Hose-Filler-Adapter-Water-Neck-1-1-2-to-1-1-2/152362967658?hash=item23798a626a:g:GqMAAOSw6DtYU0XY
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Falcolion



Joined: 20 May 2012
Posts: 138
Location: Brookyn, NY

PostPosted: Fri Aug 10, 2018 6:02 pm    Post subject: Reply with quote

Thank you. Unfortunately will not work with YB11. YB11 basically has a custom pipe with radiator filler neck and filler neck has a weird size. So any regular radiator caps don't work
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2016 Suzuki GSXR750 TRACK BIKE
2010 Husaberg FE390
2008 BMW HP2 Sport
2006 Bimota SB8K Santamonica
2005 Benelli Tornado Tre
2004 Moto Guzzi V11 Coppa Italia
2003 Aprilia SL Falco 10000R
1997 Bimota YB11 Superleggera
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who



Joined: 10 Nov 2010
Posts: 369
Location: Melbourne Australia

PostPosted: Thu Aug 16, 2018 11:32 am    Post subject: Reply with quote

Ummmm, may I ask how you know the YB11 cap is a special-weird size?

How sure are you that all regular sizes are incompatible with the YB11?

Do you have one there to reference? If so you have your answer.

I can say it is doubtful that bimota manufactured a special radiator cap and filler neck for the YB11? Highly unlikely.

When you say... quote "Thank you. Unfortunately will not work with YB11. YB11 basically has a custom pipe with radiator filler neck and filler neck has a weird size. So any regular radiator caps don't work"

I think... bullshit. Or you have some special secret agent insight? I will post a pic of a filler that was was on a bike that I wrecked. It's still here, as I see it every now and then. Next time I trip over it I'll check for you.

Really, does it need to be this dramatic? I hope the picture is not too large... Cheers

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brian



Joined: 22 Aug 2011
Posts: 3148
Location: Australia

PostPosted: Thu Aug 16, 2018 12:27 pm    Post subject: Reply with quote

Yep, it’s too large Laughing
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Falcolion



Joined: 20 May 2012
Posts: 138
Location: Brookyn, NY

PostPosted: Mon May 20, 2019 6:55 am    Post subject: Radiator cap Reply with quote

Ok, here is the deal. I was able to figure out which radiator caps fits remote neck of radiators on YB11. Any KTM, Husquarna and Husaberg radiator caps will fit just fine. The only problem with these caps is that stock cap on YB11 is 1.1 psi and the one from KTM is 1.8. Lowest that I was able to find.

Basically I took radiator cap from my Husaberg FE390 and it fits perfect. No leaks.

Radiator caps from any of the Japanese bikes would not fit and so are the one from Aprilia or newer Ducati
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2016 Suzuki GSXR750 TRACK BIKE
2010 Husaberg FE390
2008 BMW HP2 Sport
2006 Bimota SB8K Santamonica
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2004 Moto Guzzi V11 Coppa Italia
2003 Aprilia SL Falco 10000R
1997 Bimota YB11 Superleggera
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Gammaboy



Joined: 25 Feb 2016
Posts: 146
Location: Brisbane, Australia

PostPosted: Tue May 21, 2019 1:49 am    Post subject: Reply with quote

Who - the issue is the height of the the top seat of the neck vs the lower seat - most caps are designed with a shorter height - a handfull of bikes use this same taller standard. I measured a RSV4 neck I had on hand and the bimota neck - it's the same height (about 5-6mm taller than the Suzuki neck I had kicking around)

The cap from an RSV4 Aprilia fits the Bimota neck, and is only a 1.4 bar rather than the KTM/Husky/Husaberg 1.8 - the RSV4 guys fit the KTM/Husky/Husaberg 1.8 to gain some cooling capacity on the track with the stock rad.
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Falcolion



Joined: 20 May 2012
Posts: 138
Location: Brookyn, NY

PostPosted: Tue May 21, 2019 7:31 pm    Post subject: Reply with quote

Gammaboy wrote:
Who - the issue is the height of the the top seat of the neck vs the lower seat - most caps are designed with a shorter height - a handfull of bikes use this same taller standard. I measured a RSV4 neck I had on hand and the bimota neck - it's the same height (about 5-6mm taller than the Suzuki neck I had kicking around)

The cap from an RSV4 Aprilia fits the Bimota neck, and is only a 1.4 bar rather than the KTM/Husky/Husaberg 1.8 - the RSV4 guys fit the KTM/Husky/Husaberg 1.8 to gain some cooling capacity on the track with the stock rad.


Gammaboy,

Did you actually fitted the Aprilia radiator cap? Do you have a picture of your Aprilia radiator cap
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2016 Suzuki GSXR750 TRACK BIKE
2010 Husaberg FE390
2008 BMW HP2 Sport
2006 Bimota SB8K Santamonica
2005 Benelli Tornado Tre
2004 Moto Guzzi V11 Coppa Italia
2003 Aprilia SL Falco 10000R
1997 Bimota YB11 Superleggera
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Gammaboy



Joined: 25 Feb 2016
Posts: 146
Location: Brisbane, Australia

PostPosted: Tue May 21, 2019 11:07 pm    Post subject: Reply with quote

RSV4 radiator cap fitted to Bimota neck:
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Falcolion



Joined: 20 May 2012
Posts: 138
Location: Brookyn, NY

PostPosted: Tue May 21, 2019 11:20 pm    Post subject: Reply with quote

Is it Flat on the bottom (the part that goes into the neck)?
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2016 Suzuki GSXR750 TRACK BIKE
2010 Husaberg FE390
2008 BMW HP2 Sport
2006 Bimota SB8K Santamonica
2005 Benelli Tornado Tre
2004 Moto Guzzi V11 Coppa Italia
2003 Aprilia SL Falco 10000R
1997 Bimota YB11 Superleggera
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