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RADBMX.CO.UK  |  Technical & Reference Section  |  Tech and Restoration  |  need seat clamp help
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Author Topic: need seat clamp help  (Read 2745 times)

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Offline QUADROPHENIA

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need seat clamp help
« on: August 08, 2009, 02:23 PM »


got a little 1983 GT 20" mini, it needs a seat clamp, but a normal one dont fit, what size do i need ? has anybody got one ?

Offline poolysheriff

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Re: need seat clamp help
« Reply #1 on: August 08, 2009, 02:29 PM »
Pete i have this same problem on 2 of my minis (Robo n CW)  :-\

Sorry to be of no help at all  :LolLolLolLol:

snav69

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Re: need seat clamp help
« Reply #2 on: August 08, 2009, 03:12 PM »
Would a double clamp or hinged not do the trick  ???  :-\

 :coolsmiley:

Offline jT Racing

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Re: need seat clamp help
« Reply #3 on: August 08, 2009, 03:14 PM »
too big or small? i have some clamps that are different sizes by small amounts.
ding dong

mark 2

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Re: need seat clamp help
« Reply #4 on: August 08, 2009, 03:31 PM »
I've got one of those Pete, the one you grappled over the fence at mk. I built the tube up with electrical tape and got a dc hinged on it, that works fine.  If not you could try a cut down seat shim on the outside  :daumenhoch:

Offline QUADROPHENIA

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Re: need seat clamp help
« Reply #5 on: August 08, 2009, 03:38 PM »


hinged or 2 piece are to big. so i aint got a clue tbh, fancy the bodge it idea of marks  ;D

mark send me that gt mini please, i like it

sid1972

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Re: need seat clamp help
« Reply #6 on: August 08, 2009, 03:39 PM »
When I had one many moons back, I am sure a had a 'tange sc-2' on it...

got one the clamps, if you measure the dia I will check it out, against it, if its any help....

:daumenhoch:

Offline QUADROPHENIA

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Re: need seat clamp help
« Reply #7 on: August 08, 2009, 03:42 PM »


it need to be tight chaps as i gotta get my daughter off her haro mini onto a decent bike before she goes mental, she did say the GT was cool  ;)

Offline QUADROPHENIA

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Re: need seat clamp help
« Reply #8 on: August 08, 2009, 03:59 PM »


come on kids, there must be someone on here half clever  ???

Offline Mattdub

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Re: need seat clamp help
« Reply #9 on: August 08, 2009, 04:01 PM »
Would an early road bike one fit ? , kinda like Campy/Suntour/Shimano .............

Ask Steve Earl what he has on his chubby  ;)

Offline sawzall

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Re: need seat clamp help
« Reply #10 on: August 08, 2009, 04:09 PM »
pete rickman made a shim to fit over seat tube which made up the difference
 on seat clamp it was just a bit of tube with a slit in it or take a look on ebay
for a dk split seat clamp made for minis :daumenhoch:
British race frames and race clothing wanted

sid1972

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Re: need seat clamp help
« Reply #11 on: August 08, 2009, 04:10 PM »
The 1983 Gt mini in BMXMUSEUM has an Dia mx hinged job!

Not sure if its tight or not....

mark 2

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Re: need seat clamp help
« Reply #12 on: August 08, 2009, 04:17 PM »
Hold tight, I remember I bought another GT mini years ago with a clamp fitted, it had a split shim fitted inside. Fook knows if I've still got it but I'll go digging....

*UPDATE - Not found it :LolLolLolLol:

It may turn up , my junk room is sky high with unorganised crap. Found 4 mx 1000's, dx's, boxed forklifter stem, a burnished ripper among a ton of other bits....not a bad rummage.  ;)
« Last Edit: August 08, 2009, 06:26 PM by mark j. »

Offline jT Racing

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Re: need seat clamp help
« Reply #13 on: August 08, 2009, 07:39 PM »
found them, there are these tange clamps that are too small for a normal bmx. they measure a little over 20mm inside. one was shoehorned onto a showpony the other is lightly used.
nice blue clamps. LMK if your interested ;)
ding dong

Offline QUADROPHENIA

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Re: need seat clamp help
« Reply #14 on: August 08, 2009, 07:50 PM »


send it down old pal....with the other bits  ;)

Offline jT Racing

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Re: need seat clamp help
« Reply #15 on: August 08, 2009, 07:54 PM »
ok, will do.
now where's my pistons ??? :'(
ding dong

Offline QUADROPHENIA

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Re: need seat clamp help
« Reply #16 on: August 08, 2009, 07:56 PM »
ok, will do.
now where's my pistons ??? :'(

the geezer wont speak to me, have you upset him ?

Offline QUADROPHENIA

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Re: need seat clamp help
« Reply #17 on: August 13, 2009, 06:22 AM »
found them, there are these tange clamps that are too small for a normal bmx. they measure a little over 20mm inside. one was shoehorned onto a showpony the other is lightly used.
nice blue clamps. LMK if your interested ;)


WAITING..........your upsetting my daughter now john, look at the time, she has already had a go at me this morning   >:(

Offline Mattdub

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Re: need seat clamp help
« Reply #18 on: August 13, 2009, 08:49 AM »
found them, there are these tange clamps that are too small for a normal bmx. they measure a little over 20mm inside. one was shoehorned onto a showpony the other is lightly used.
nice blue clamps. LMK if your interested ;)


WAITING..........your upsetting my daughter now john, look at the time, she has already had a go at me this morning   >:(

uh oh ! , don't upset little Mia .....  :-\

Offline jT Racing

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Re: need seat clamp help
« Reply #19 on: August 13, 2009, 07:59 PM »
found the bolt, so you can get it now. ;)
ding dong

Offline Gary72

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Re: need seat clamp help
« Reply #20 on: August 13, 2009, 10:25 PM »
What size is the seat post?
I've got a Cyclecraft mini and that is normal

Offline GTnumber1

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Re: need seat clamp help
« Reply #21 on: August 15, 2009, 05:37 PM »


come on kids, there must be someone on here half clever  ???


put a cable tie round it   :2funny: :2funny: :2funny: :2funny: :2funny: :2funny: :2funny: :2funny: :2funny: :2funny: :2funny:

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