Colnago V2R/C64 seatpost rails tuning

Discuss light weight issues concerning road bikes & parts.
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micky
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Joined: Thu Sep 21, 2006 8:57 pm
Location: Vicenza
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by micky

I googled online but no luck; anyone ever tried to tune the latest D shaped Colnago seatpost by trying to shave some weight?
Last edited by micky on Mon Nov 18, 2019 9:08 am, edited 1 time in total.

by Weenie


bikeboy1tr
Posts: 421
Joined: Thu Mar 21, 2013 3:19 am
Location: Southern Ontario Canada

by bikeboy1tr

Other than cutting the seat tube to length and eyeing up that silly seat mount bolt with the large diameter collar for finger adjustment as I am going to turn it down to the actual bolt diameter. Oh yeah I drilled a 2.5mm hole to thread and mount a Garmin Radar on the flat side rear.
viewtopic.php?f=10&t=154188
2018 Colnago V2R Rim Brake
2014 Norco Threshold Disc Brake
2012 Time RXRS Ulteam Rim Brake
2008 Time VXR Rim Brake
2006 Ridley Crosswind Rim Brake

LewisK
Posts: 129
Joined: Thu Oct 31, 2019 2:11 pm

by LewisK

I chopped the excess off the bottom, not sure there’s much more you can do than that. Saved 19grams

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micky
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Joined: Thu Sep 21, 2006 8:57 pm
Location: Vicenza
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by micky

Yeah guess chopping the lower excess is one of the few things possible to do.
I was just curious if it would be possible to use something like these parts.

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dgasmd
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by dgasmd

LewisK wrote:I chopped the excess off the bottom, not sure there’s much more you can do than that. Saved 19grams
So how much is safe to leave below the point where the clamp is around the seatpost?? 3 vs 5 vs 10 cms?

bikeboy1tr
Posts: 421
Joined: Thu Mar 21, 2013 3:19 am
Location: Southern Ontario Canada

by bikeboy1tr

Many frames will have a lug where the ST,TT, and the chain stays come together and if you look down inside the seat tube you will see a step where the lug ends(larger ID at that point) and the seat tube continues to the BB. I always make sure that my seat post inserts to that spot as there is no more support for the seat post any further. The minimum insertion mark should also give you a good idea. Just measure from that mark to the end of the uncut post and be sure you have that same distance from where the post is clamped to where you cut it.
viewtopic.php?f=10&t=154188
2018 Colnago V2R Rim Brake
2014 Norco Threshold Disc Brake
2012 Time RXRS Ulteam Rim Brake
2008 Time VXR Rim Brake
2006 Ridley Crosswind Rim Brake

LewisK
Posts: 129
Joined: Thu Oct 31, 2019 2:11 pm

by LewisK

dgasmd wrote:
Mon Nov 18, 2019 7:56 pm
LewisK wrote:I chopped the excess off the bottom, not sure there’s much more you can do than that. Saved 19grams
So how much is safe to leave below the point where the clamp is around the seatpost?? 3 vs 5 vs 10 cms?
I’ve left 8.5 cm’s.

I’m fairly light at 61kg and there is about 18cm of exposed seat post (not inc saddle).

by Weenie


ironman1
Posts: 198
Joined: Thu Dec 09, 2004 5:51 pm

by ironman1

I also have a v2-r. I replaced the bolts with titanium. I looked at the carbon cradle but unless you have one in hand the radius can be just slightly different and not work. let me know if you find one that does.

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