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 Post subject: Thompson Elite "Tuned"
PostPosted: Sat Apr 05, 2008 8:06 pm 
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Joined: Mon Nov 13, 2006 5:43 am
Posts: 142
Location: Seattle
Had some free time at work yesterday. So it was time to tinker...
Down to 158g from 198g
It is a 31.6, was 287mm long and is now 240mm.
The centers of the head have been milled out, the edges have been trimmed back and the top of the post has been milled down.
This weight is with tuned stock steel bolts and barrels.


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Thomson small2.jpg
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 Post subject:
PostPosted: Sat Apr 05, 2008 8:21 pm 
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Joined: Tue Dec 23, 2003 4:48 pm
Posts: 322
Location: Italy
nice works! I'm just planning to do the same with my Thomson seatpost....


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 Post subject:
PostPosted: Sat Apr 05, 2008 8:34 pm 
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Joined: Wed Jan 25, 2006 8:32 pm
Posts: 550
Location: Bow of a Farr 40
Good work, can you do mine please? :-)

I already filed away the fwd part of the lower saddle rail clamp since it was cause abrasion to my cycle shorts (my saddle is as far back as possible) but I never imagined how far you could take it.

I suppose cutting it to length was by far the biggest weight saver. I once tried cutting a 400mm 30.9 Thompson post and it was not easy, the alu was quite hard. Is that because it's 7000 series? Most cheaper alu posts are soft as hell.


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 Post subject:
PostPosted: Sat Apr 05, 2008 8:47 pm 
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Joined: Mon Nov 13, 2006 5:43 am
Posts: 142
Location: Seattle
Yes the 7000 series is pretty hard. But it does machine nice.
It doesnt seem to gaul up as much as softer alum.

The 45mm long piece of tube weighed out to 19g.
So there is about 15-20g from the head and bolts.
I think you take a little more off the head parts to get a few more grams but i figured this was enough for now.


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 Post subject:
PostPosted: Sat Apr 05, 2008 9:16 pm 
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Joined: Tue Aug 12, 2003 8:39 pm
Posts: 1234
Location: Holland
Replacing the upper part of the clamp by something like this:

Image

could save even more weight....

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Whow! That's a pretty damn nice garage door!


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 Post subject:
PostPosted: Sat Apr 05, 2008 9:30 pm 
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Joined: Mon Nov 13, 2006 5:43 am
Posts: 142
Location: Seattle
That is a good idea!
Are those parts alum?


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 Post subject:
PostPosted: Sat Apr 05, 2008 9:31 pm 
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Joined: Mon Nov 13, 2006 5:43 am
Posts: 142
Location: Seattle
oops....
Double post


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 Post subject:
PostPosted: Sat Apr 05, 2008 9:43 pm 
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Joined: Tue Aug 12, 2003 8:39 pm
Posts: 1234
Location: Holland
http://weightweenies.starbike.com/forum ... hp?t=14674

Topic about Felix0rs tuning job on a Easton EC90 post :thumbup:

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Whow! That's a pretty damn nice garage door!


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 Post subject:
PostPosted: Sat Apr 05, 2008 11:29 pm 
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Joined: Tue Oct 30, 2007 5:02 pm
Posts: 642
Asphaltdude,
I replaced clamp like that with Thomson upper plate and I think
Thomson is lighter and better (Ridley Helium ISP).

rebizap,
now you need to watch all the dirt from back wheel
getting thrown under a saddle and falling down right on the BB.
Piece of tape on the upper plate?


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 Post subject:
PostPosted: Sun Apr 06, 2008 12:12 am 
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Joined: Sun Sep 03, 2006 1:55 pm
Posts: 1838
Location: Western Australia
His BB should be sealed, and if he isn't mountain biking, he should be fine anyway.

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Cyclist turned music producer

Visiting South West Australia? Visit Crank n' Cycles!


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 Post subject:
PostPosted: Sun Apr 06, 2008 2:32 pm 
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Joined: Tue Oct 30, 2007 5:02 pm
Posts: 642
Here is Ti bolts and nuts for the post:

http://cgi.ebay.com/Thomson-Titanium-Se ... dZViewItem

Also the saddle cradle(lower part) can be made from ofcut from any carbon fork cut in half lengthwise.


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 Post subject:
PostPosted: Tue Apr 08, 2008 6:01 am 
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Joined: Tue Mar 18, 2008 3:02 am
Posts: 69
Give the guy any free time at all and parts start getting machined down.

nice effort bro.

Kyle.

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agent of Kharma


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 Post subject:
PostPosted: Tue Apr 08, 2008 9:00 am 
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Joined: Wed Sep 01, 2004 10:48 am
Posts: 68
Or save time and buy the Thomson Masterpiece :D


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 Post subject:
PostPosted: Tue Apr 08, 2008 3:52 pm 
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Joined: Thu Aug 03, 2006 6:38 pm
Posts: 1237
Or save everything and keep the Elite reliability. You are crazy ;) :lol:

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Biomechanical spreadsheet. Sizing&Fitting.

http://weightweenies.starbike.com/forum ... 8e319d185b


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 Post subject:
PostPosted: Tue Apr 08, 2008 3:57 pm 
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Joined: Wed Apr 18, 2007 5:18 pm
Posts: 494
Location: Toronto, ON
beatnik wrote:
Or save everything and keep the Elite reliability. You are crazy ;) :lol:


Welcome to WW my friend. :wink: :lol:


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