Increasing seat post length
northcliff66
Posts: 187
My seat post has markings on it that show the maximum that it can be lifted up, i.e. so there is a minimum amount that must be inside the frame. I can understand this.
However, I want the seat higher, without changing pedals or cranks, or saddle. So, how about inserting a correctly engineered post into the seat post with an accompanying sleeve to bring it up to proper diameter? This would still remain inside the frame of course.
Good idea? Bad idea? Have I missed anything?
P.S. It is not a carbon post.
However, I want the seat higher, without changing pedals or cranks, or saddle. So, how about inserting a correctly engineered post into the seat post with an accompanying sleeve to bring it up to proper diameter? This would still remain inside the frame of course.
Good idea? Bad idea? Have I missed anything?
P.S. It is not a carbon post.
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Comments
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get a longer seatpost!Colnago Addict!0
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mrdsgs wrote:get a longer seatpost!
OMG, why didn't I think of that before I posted my stupid ill-conceived question?
Oh yes, I know. Not an option. It's a classic Campag post and they only come in one length.0 -
ok. if you look inside your "classic Campag post" you will find that the metal/steel is quite thick and they usually taper internally and are actually solid metal near the top. the fluted/aero posts even more so.
feel free to proceed, with your bizarre/ridiculous/ down right dangerous proposition. What could possibly go wrong?......
new and larger frame to fit your current seatpost?Colnago Addict!0 -
northcliff66 wrote:mrdsgs wrote:get a longer seatpost!
Oh yes, I know. Not an option. It's a classic Campag post and they only come in one length.
In which case, just accept that your 'classic campag post' is not suitable for your purpose - and replace it with one that is.0 -
Also, perhaps, get a bike fit. You can do some serious damage to your achilles tendons if the seat post is too high. Not saying this is the case, but, be aware of this.0
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northcliff66 wrote:My seat post has markings on it that show the maximum that it can be lifted up, i.e. so there is a minimum amount that must be inside the frame. I can understand this.
However, I want the seat higher, without changing pedals or cranks, or saddle. So, how about inserting a correctly engineered post into the seat post with an accompanying sleeve to bring it up to proper diameter? This would still remain inside the frame of course.
Good idea? Bad idea? Have I missed anything?
P.S. It is not a carbon post.
I do not see a problem with your plan. It does rely on the engineering but as I see it there are no big forces involved here.
The seat post might need machining internally to get a good fit for your extension. It depends on your expertise and facilities.0 -
don't do what I saw when I was a young boy and use a copper pipe, never laughed so much when it folded down and the fat geezers bottom went onto the back tyres.0
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peterbob wrote:don't do what I saw when I was a young boy and use a copper pipe, never laughed so much when it folded down and the fat geezers bottom went onto the back tyres.
Love it.
The question was a serious one, but I guess this is a forum so I should expect most respondents to pick holes in the entire concept.
The bike is one of a classic collection, so there is no point in just getting a different bike. It's a case of making this bike as comfortable as can possibly be done without compromising its integrity.
The entire bike is fitted with new or almost new Campag record or Super record from the early eighties, including the aero post. To fit anything else would be sacrilege.
As for the bike fit, well I have had many of those over the years. That's why I know I need to get the seat post 20mm higher than the limit line.
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Campag also made round profile, longer seatposts. Ask yourself, what you would have done back in the day?0
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Imposter wrote:Campag also made round profile, longer seatposts. Ask yourself, what you would have done back in the day?
I didnt know that. Any idea where I might find one. Havent seen anything on ebay or the guru (Campyold).0 -
one here: http://www.ebay.co.uk/itm/Campagnolo-Ch ... SwuAVWwL8z
There's actually quite a few on ebay, even some from Campag's old MTB groups, depending on diameter and length...0 -
It does suggest the bike is too small for you.....
However what you suggest is definately better than just riding with post 20mm above the max line. there is a danger the extension contraption remains inside the frame when you remove the seat post, unless you solder the whole thing together.
Proper longer post is the best way forward.Bianchi Infinito CV
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Carrera Vengeance Ultimate Ltd
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Front half of a Viking Saratoga Tandem0 -
Campagnolo used to make two lengths of seat pin, but remember back when these were made the norm was about 6 inches or so of pin showing.
Maybe your pin is a short version, in which case you will need to find a longer version. If you are looking at needing longer a than the longer version, then in terms of a retro - correct bike the frame is too small I'm afraid.0 -
Yes, the frame is too small.
That is why I need a longer seat post!
The problem is that all they made in the 80's was 180mm posts. 220mm including the clamp
And I ideally do not want an old scratched one.0 -
northcliff66 wrote:Yes, the frame is too small.
That is why I need a longer seat post!
The problem is that all they made in the 80's was 180mm posts. 220mm including the clamp
And I ideally do not want an old scratched one.
Like I said before - what would you have done back in the day? Answer = exactly what the pros did back then - they used an MTB post. As did I.0
