seat post bolt

[carpenter]

My most recent purchase is a Dancelli frame (looks very much like a Colnago). It needs a seat post bolt and I have noticed that the seat post clamp does not have the little cut out which would prevent the bolt turning when being tightened.

Is it normal for Italian/Colnago/Dancelli to use a plain bolt (22mm long, 8mm diameter) ?

 

[biggs682]

Depends on the type and style of seat clamp , show us a pic and we can see

 

[wonderdog]

Depends on the type and style of seat clamp , show us a pic and we can see

While we're discussing seatpost bolts, does anyone have one for a Viscount Aerospace ... they have the "V" reversed out of a red background on the bolt head like Carlton and Raleigh. Also a stem bolt and, while we're at it, a rear skewer for 126 width - same deal with the reversed V. Do I ask too much? Thanks in anticipation.

 

[biggs682]

While we're discussing seatpost bolts, does anyone have one for a Viscount Aerospace ... they have the "V" reversed out of a red background on the bolt head like Carlton and Raleigh. Also a stem bolt and, while we're at it, a rear skewer for 126 width - same deal with the reversed V. Do I ask too much? Thanks in anticipation.

Can't help have a chat with @Tony Raynor or @stevevw both are or have been Viscount owners

 

[stevevw]

Can't help have a chat with @Tony Raynor or @stevevw both are or have been Viscount owners

I do indeed have some of these parts. unfortunately for you wonderdog they are staying on my bikes

 

[wonderdog]

I do indeed have some of these parts. unfortunately for you wonderdog they are staying on my bikes

When your sadly and falsely maligned death forks put you into a ditch, think back to my request. I'm still running said forks on both my Viscounts and they remain remarkably together.

 

[carpenter]

Pardon strange paint effects - in process of removing rust and covering bare metal in aluminium paint

Note lack of slots for bolt, I thought a slot to prevent rotation of bolt was standard (I am not sure about cutting slot - I don't want to damage frame).
Are bolts like those below made without protrusion (I imagine it would be hard work to file off the lump?)

 

[biggs682]

@carpenter these dont seem to have the lugs

https://www.sjscycles.co.uk/seat-posts/campagnolo-spre104-seat-pin-bolt-chromed-allen-key/

https://www.sjscycles.co.uk/seat-posts/silva-19mm-seat-pin-bolt-chromed-allen-key/

@wonderdog this one looks to have a V nut on the seat post

https://www.gumtree.com/p/bicycles/vintage-1960-s-viscount-bicycle./1306729543

 

[midlife]

Biggs682 is correct, the serrations stand in for the lug / slot arrangement. Still need two Allen keys to tighten though lol

Mind you that does look like a wide bolt hole?

 

[carpenter]

Cheers biggs'

Hi midlife, using a steel rule the hole seems to have an 8mm diameter (Allen keys not a problem, I have about three sets; usual bad organisation - can't find one, go out and buy a new set, get home and find the old one )

 

[midlife]

Seem to recall the Campag seat bolts were 8mm with a 5mm Allen key?

http://www.velobase.com/ViewComponent.aspx?ID=9d4831bd-57ba-4d41-a644-762b0ad9ab65&Enum=103

 

[rogerzilla]

The serrated type are annoyingly rare and can be pricey. My Ron Cooper needs one.