Recent Posts

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General Discussion / Re: Weather where you are?
« Last post by SimonR501 on Today at 11:08 »
Happy summer solstice to those in the Northern Hemisphere.
Yes! Sunrise 04:43 and Sunset 21:22 hrs today in the UK - so long day!
I expect the warlocks, druids and Pagan revellers went straight back to work after the sunrise at Stonehenge:D

Mind you Iceland only gets just under 3 hours of darkness today, so they are probably making more of it!
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Technical / Re: Step by step
« Last post by rowdypat on Today at 10:38 »
In this case, the fingers are for twisting  ;D
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General Discussion / Re: Had a look at a KTM 1290 Yesterday
« Last post by Cosi on Today at 10:28 »
I had a 690 single..although the current one is ugly..they are incredible..over70hp..no weight..run rings round most things in the real world.slipper clutch..great brakes...I want mine back!
a slick Aprilia Rs 250 I know eats them for breakfast...
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Technical / Re: SF Set up issues
« Last post by Piranha Brother 2 on Today at 10:02 »
I customise my selector washers anyway. I run one under the spring to be absolutely sure the spring can't foul the arm/eccentric screw. I then fit the little cover without a gasket to make sure there will be no binding of the selector pin-wheel when it's fitted with the gasket. The splined selector for the gear lever can be checked once it's all tightened with the gasket in place - should be some discernible play in and out.
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For Sale / Re: barn find of the year or pile of rubbish?
« Last post by breganzane on Today at 09:21 »
Don't 4C cam bikes have tappet guides w/ reliefs machined due to lobe design to account for the increased lift/lobe length?

Never heard that one.

The bucket/tappet guide, stupid on me, isn't supposed to be nibbled as it is in pic-and this bike probably didn't have 4C cams fitted in Breganze.

If you're referring to this bit:

That is just where the machining operation for the top face intersects the casting.  It is in basically all heads to some degree or other, it's size varies because for the first machining operation on a rough casting there is no real datum.  It does look a bit bigger than most, but I too am no real expert.
It could also indicate however that the top of the head has been skimmed at some point.  I'm not sure it's possible to tell without taking off the head and measuring the overall thickness, which should be 94.0mm.  Maybe you can measure the depth of the bucket bores in some way, as they should be the same depth from the top face.  That little notch to the right in this image could indicate some damage at some stage, or might be nothing.

To me it looks like another one of those barn find type things, owned by someone who was quick to pull things apart but that's as far as the enthusiasm got.  Parts then lost, poorly stored and so on.  But TBH it doesn't look as bad as many I've seen, and the cam photo does not show any obvious rust.  The seller should clean the goop off that cam lobe/bucket and post another pic, it might be fine underneath.  Buy it expecting the worst and hope for a pleasant surprise is how I would approach it.
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Technical / Re: SF Set up issues
« Last post by earthcore on Today at 09:17 »
small cover off so yes can see spring
cheers for hint re rocking back wheel,
and re suspension, thats another story :-)
but for now until i can sort the cerianis theres some fake ohlins on it ive used on a few bikes now :-)
any hints on the washers? is the centre one on the selector fulcrum a washer/o-ring or what?
cheers again
keep you posted
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Technical / Re: Step by step
« Last post by Jo on Today at 09:16 »
Is it 'Desmodromic' as well ..?
 8)
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Technical / Re: Step by step
« Last post by rowdypat on Today at 08:44 »
..and looks quite like a Ducati throttle I have floating around in the shed.
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General Discussion / Re: Had a look at a KTM 1290 Yesterday
« Last post by nick7 on Today at 08:32 »
I had a 690 single..although the current one is ugly..they are incredible..over70hp..no weight..run rings round most things in the real world.slipper clutch..great brakes...I want mine back!
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Did I mention the coffee van?
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