Odd seatpost clamp size

[Devilock]

Can anyone suggest a generous size seatpost clamp (apart from a DC twin or hinge) as my Torker seatpost tube is just a little bigger than standard...?!

[BENDYCAT ELEVENTEEN]

burner one  25. ?

[Devilock]

burner one  25. ?

Not sure...I know its not due to any thick paint as its chrome. So what are the options...?? 

Im not using a Raleigh   

[BENDYCAT ELEVENTEEN]

well some of the tange ones are bigger - you got nothing to mesure it with ?

[Devilock]

well some of the tange ones are bigger - you got nothing to mesure it with ?

Tried a Tange & its too small! Not at home so Ill measure later... Ill probably just buy a twin bolt!

Also, my DC hinged doesn't really fit correctly either...!! 

[BENDYCAT ELEVENTEEN]

have seen a couple of post that are bigger - and as you know mk 1 burners are the same

give it a measure and we can see what we can dig out for you 

[sid1972]

Gaz, had a oversized suntour clamp in gold for sale not long back, i am sure that was burner size. But its the standard suntour just bigger. 

[BENDYCAT ELEVENTEEN]

yer seem to remember there were two sizes -larger fitted burners as did the tange 

[sid1972]

Here you go - I sold it him for more than he is asking anyway, not sure if it sold though drop poolysheriff a pm.

[Devilock]

True...Gaz has got everything...!

Ill measure it...
& the seat tube...!!!

[Devilock]

Right, Ive measured the seatpost tube on the Torker & it has a circumference of 81.5cm. Measured my TA & thats 80cm... Why the fúck would it be 1.5cm bigger??!!?!? Stupid...

[Devilock]

Oh, I also measured a Tange seatpost tube & that is 80cm...

[MartyC]

Thickness of the paint/powder could easily account for that  .

[Devilock]

Ah, no because all the frames measured are chrome...

[Devilock]

All original chrome too...

[BENDYCAT ELEVENTEEN]

ok so the seat clamp doesn't go on

does the seat post you have slide in smooth or tight ?

have you tried a couple of different post in there ?

you know the 1.5 mm could be a seat post that was slightly larger fitted and has opened up the seat tube top where the split is ?

maybe measure the thickness of the metal on a couple of your other bmx's to see what they are like ?

you may find it's thicker ?

you may also find that with the right seat post you can squeeze together the seat post about 1.5 mm and it will allow a good clamp on there ?

[HEYWOOD BMX]

Does a newschool clamp fit? If so,it`ll be a 28.6mm (1 1/8) internal diameter.

[MartyC]

Right:

80MM circumference  = 25.4mm Diameter

81.5MM circumference = 25.9mm Diameter

http://www.rkm.com.au/calculators/calculator-circle-sphere.html

I would suggest that it's MM not CM as it would have to be a fooking huge frame 

That level of difference is tiny, less than half a millimetre so most likely within a manufacturing tolerance.  Try opening up the seat post clamp a little when you put it on or sand down the inside of the clamp with wet & dry to remove some of the material.  Obviously opening the clamp up a little with a wooden wedge is the least damaging to the clamp!