I now ride a 400mm Thomson post on the Van Nic, as advised by VN, not taking any chances, even if I do have the lifetime warranty to fall back on...
Which Ti frame (recommend one)
With the 330mm post very little is hanging out the bottom of the sleave. Why would 70mm hanging out the bottom help?
How much does the extra 70mm weigh?, Not much I should imagine so why not 400mm
damn damn damn, i have just fitted the bloody thing, its brand spanking, fitted up to its minimum insertion point it is still 30mm shorter than internal sleeve.
i ordered a 350mm they (fatbirds) sent a 300mm in error without me noticing, whats the likelihood of them swapping it out, considering its now got hefty insertion marks below the minium line?
Where is Brant when you need him?
CRC must have him working hard already.
Must admit an extra 70mm would weigh naff all, but post is 330mm and sits just below the internal sleeve and would rather not ditch a very good post for no real reason.
I run a pretty high seatpost on an older lancaster see pic below, but having said that its a 400mm carbon seatpost which I believe (probably wrongly knowing me) takes some of the impacts that would damage the frame. i have owned the frame for about 3 years IIRC.
Still I'd go back to fatbirds and suggest they replace the seatpost!
If it's sleeved internally there's absolutely no advantage to having more seatpost hanging out the bottom- it's just floating around in the tube being all heavy and pointless!
If it's not, then you may as well have as long a seatpost as possible, so the tube's better supported.
The issue, from the feedback I have had from Lynskey, is that due to titaniums flexibility, running more than an inch an a half of extension above the top tube is going to cause problems.
That is actually why we curved the top tube on the 456. To normalise standover height, yet, let us put the top tube to the seat tube a little higher - the curve was needed as otherwise standover would be (a bit) higher.
Also, on the Ti 456 we used a shimmed (internal) 34.9mm post, not a skinny one.
For info; just had a look and I have 160mm of seat post inside the tube, no internal sleeve, 27.2 seatpost. So thats a fair bit even with the long post and 14st giving a fair bit of leverage. Still just as well as I'm not exactly able to do much about it even if it is an accident waiting to happen.
Interestingly on your point Brant my '98 Kona 853 runs a 26.8 seat post (similar amount inside/out) and I swear there is a bit of a bend in the seat tube, But again its been there for 10 years so hey ho!
@singlespeed - Im on my 3rd Ti frame, 1 was nicked the other is a road bike. Again I wanted a bike which was supple enough to ride on the smashed up country roads near me & something which would take said hammering.
@njee Most of the failures on here it seems to me have happened when folk have been doing something outside of the recommended specs. Plus if Ti Mtbs have had their day why are so many people making them?
At the end of the day its whatever makes you happy - Ive just ridden my Ti & love it, climbs like a goat & if I have the balls to let it will fly down the trails as fast as I want to go! Anyway nuff said Im off for a fish dinner with the missus.
How many other guys sell a bike and then so quickly respond to chatter?
OK maybe Mike at Dialled - but I have one of those too
It is reasuring, I hope you can keep it up Brant.
I'll try, but I've only just got up.
"If it's that light though, surely it's a bit of a flexy mess when ridden?"
late reply - but no, not necessarily. stiffness to weight is largely about balancing wall thickness and diameter. ti is generally whippier than steel or alu, but the Genesis is a good bit stiffer than a couple of other popular ti frames i've ridden.
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