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DB2 seat fasteners
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welshlamb



Joined: 09 Mar 2011
Posts: 430
Location: South Wales , Nr. Abergavenny

PostPosted: Sat Jun 13, 2020 10:36 am    Post subject: Reply with quote

Will do Piso👍
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Kaindub



Joined: 24 Jul 2016
Posts: 5
Location: Sydney, Australia

PostPosted: Sun Jun 14, 2020 4:33 pm    Post subject: Reply with quote

I had a similar issue with my YB7. NEEDED THE SEAT bolts.
I found some shouldered bolts on eBay.
These are construction bolts. They have a cap head (hex). Then it goes into a shoulder that is thicker than the thread. I think the shoulder on mine was 20mm but it was the right size for the YB7. Then there is a shortish thread. In my case 16mm.
The bolt length and shoulder come in different lengths.
I had to machine the shoulder a few mm and then I put a taper on the socket head.
The bolts are a few Bucks but way cheaper than Bimota spares. I think I got them on eBay, but any good bolt supplier can supply. Plenty of on line catalogs to find what you need.
Material is hard steel.
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bimotanige



Joined: 12 Jul 2010
Posts: 575
Location: yorkshire

PostPosted: Mon Jun 15, 2020 9:15 am    Post subject: Reply with quote

couple for me please (1 bike worth!)- be interesting to see how hot they get from heat transfer from the exhausts below!
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2bims



Joined: 03 Apr 2010
Posts: 6883

PostPosted: Tue Jun 16, 2020 11:56 am    Post subject: Reply with quote

bimotanige wrote:
couple for me please (1 bike worth!)- be interesting to see how hot they get from heat transfer from the exhausts below!


Shouldn't be an issue....they fit into proud sockets with flanges....and....you should have as standard a double layered as heat baffle unit that covers the link pipes
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2bims



Joined: 03 Apr 2010
Posts: 6883

PostPosted: Tue Jun 16, 2020 12:06 pm    Post subject: Reply with quote

bimotanige wrote:
couple for me please (1 bike worth!)- be interesting to see how hot they get from heat transfer from the exhausts below!


Shouldn't be an issue....they fit into proud sockets with flanges....and....you should have as standard a double layered as heat baffle unit that covers the link pipes
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welshlamb



Joined: 09 Mar 2011
Posts: 430
Location: South Wales , Nr. Abergavenny

PostPosted: Thu Jun 18, 2020 5:25 pm    Post subject: Reply with quote

Just to advise, iíll let this run for the next week and see where we have got to at that point! Thanks for the comments so far.
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brian



Joined: 22 Aug 2011
Posts: 3530
Location: Australia

PostPosted: Fri Jun 19, 2020 8:17 am    Post subject: Reply with quote

brian wrote:
2bims wrote:
brian wrote:
I have a friend in Aus that makes 'special' bolts, fasteners, spacers etc as a hobby. He mostly use titanium but can use steel, alluminium, titanium etc. He also has the rotary broach to do the in-hex. I'll bounce it off him and see what he could do.


I've no idea what the rotary broach is Brian....but lets see....I presume you have the same plastic/nylon bolts on your Junior?



Yep, my Junior has the original plastic fasteners.


Ok.... so I thought my DB2 J had plastic fasteners.... on closer inspection Iíve found that they are indeed black anodised ALUMINIUM! Iíll post a couple photos in my Junior refresh thread

.
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Current motorcycles - '99 Bimota DB4 #104, '96 Bimota SB6 #1165, Ď94 Bimota DB2 J #652, '99 Bimota DB4 #088, '08 VTX1800, '93 ZXR750R M1, '95 ZXR750, '95 ZXR750 Race Bike, Ď94 CBR400rr NC29 Race Bike, '94 CB250, '49 BSA C10 250, Ď61 BSA A10 650
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Jaguar



Joined: 15 Sep 2017
Posts: 172
Location: Albany NY

PostPosted: Mon Jun 29, 2020 2:14 pm    Post subject: Reply with quote

These should be the same as the ones used on the exhaust of a SB8R?

IF so, I would be down for some as well.
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welshlamb



Joined: 09 Mar 2011
Posts: 430
Location: South Wales , Nr. Abergavenny

PostPosted: Mon Jun 29, 2020 2:57 pm    Post subject: Reply with quote

Hi, Im a couple of days behind on this due to other work at the moment around the house! Will post up a dimensioned drawing for you to check. In any case Iíll have to get a quote for a reduced number as not enough takers for the originally discussed batch size. Crying or Very sad
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Fly8s



Joined: 13 Feb 2020
Posts: 6
Location: Massachusetts, USA

PostPosted: Tue Jun 30, 2020 2:56 am    Post subject: Reply with quote

Iíll take a set. Thanks
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bimotanige



Joined: 12 Jul 2010
Posts: 575
Location: yorkshire

PostPosted: Tue Jun 30, 2020 8:11 am    Post subject: Reply with quote

2bims wrote:
bimotanige wrote:
couple for me please (1 bike worth!)- be interesting to see how hot they get from heat transfer from the exhausts below!


Shouldn't be an issue....they fit into proud sockets with flanges....and....you should have as standard a double layered as heat baffle unit that covers the link pipes


assuming you have standard pipes.
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2bims



Joined: 03 Apr 2010
Posts: 6883

PostPosted: Tue Jun 30, 2020 11:39 am    Post subject: Reply with quote

My end cans and down pipe 2into 1 into 2 connecter isnt standard...but still space for the baffle plates....they fit between the seat rails....but...If you have 150mm dia piping then maybe yours went by the wayside
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bimotanige



Joined: 12 Jul 2010
Posts: 575
Location: yorkshire

PostPosted: Tue Jun 30, 2020 2:31 pm    Post subject: Reply with quote

2bims wrote:
My end cans and down pipe 2into 1 into 2 connecter isnt standard...but still space for the baffle plates....they fit between the seat rails....but...If you have 150mm dia piping then maybe yours went by the wayside

as I said mine isn't standard and are 2 large diameter pipes - no Y piece. Only 1 layer of the baffle plate will fit and the pipes sit 8mm below it in parallel - that's why it all gets a bit warm when your out on a decent run.
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welshlamb



Joined: 09 Mar 2011
Posts: 430
Location: South Wales , Nr. Abergavenny

PostPosted: Wed Jul 01, 2020 12:48 pm    Post subject: Reply with quote

welshlamb wrote:
Hi, Im a couple of days behind on this due to other work at the moment around the house! Will post up a dimensioned drawing for you to check.




here you go Jaguar. (Nb there will be a 1mm 'band' at the base of the screw's head ie the taper isnt the full 4mm depth if that makes sense)
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welshlamb



Joined: 09 Mar 2011
Posts: 430
Location: South Wales , Nr. Abergavenny

PostPosted: Wed Jul 01, 2020 12:55 pm    Post subject: Reply with quote

bimotanige wrote:
.....as I said mine isn't standard and are 2 large diameter pipes - no Y piece. Only 1 layer of the baffle plate will fit and the pipes sit 8mm below it in parallel - that's why it all gets a bit warm when your out on a decent run.


an aside from the seat bolts but could Zircoflex sheet be your friend here?
https://www.zircotec.com/heat-shield-materials/
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