Hello guys + girls.Just bought a thomson seatpost and discovered it has no seat hight markings on it.I was wondering what other people do to make sure you get the right hight after a downhill run?.Tipex or marker would just rub off.Any ideas ?.

Scratch it!

+1

So you folks would pay lots of squids for a “40% stronger” Thomson seat post. Then put a flippin scratch in it at the height where it’s most likely to snap (bending moment greatest) and likely to become a site of crack propagation? No wonder stuff breaks “just riding along”.

I just guess and get it right some of the time. I would like to know if there’s a decent answer to this problem, short of tying a length of string to the saddle or some gentle marking on the post.

I also scratch it; I have never, ever broken a seat post. I suppose that you could put a hole in it big enough for a ball bearing and stick a spring behind it, this would then slot into the hole on the seatpost tube that’s on a lot of frames. This would probably screw over the seat post even more though

Only a light scratch, I’m not suggesting taking a hacksaw to it!

Just ride it, you’d get a little mark at the normal height anyway. It’s how I reset mine.

I just know how high it is when I stand next to the bike – just above my hip bone

So you folks would pay lots of squids for a “40% stronger” Thomson seat post. Then put a flippin scratch in it at the height where it’s most likely to snap (bending moment greatest) and likely to become a site of crack propagation? No wonder stuff breaks “just riding along”.

AFAIK, the paintwork isn’t part of the overall strength of the post.

what TJ said, bottom of saddle rests on my hip bone, but I am very skinny

Use a Zip tie to mark the point you use when the seat post is lowered for d/h bits.
You should be able to estimate the 2 – 3 inches you prob drop when raising it again ?

? Ive always just lifted it back up and you just know where it goes, 5 or 10mm wont make any difference really. Excuse my ignorance, but aren’t you looking for a solution to a problem that doesnt exist?

RE:neverfastenuff
Good idea.Will try that for this sundays ride on high street,lakes.Thanks

We can now modify my zip tie idea by using the technique below.

I.E, zip tie around seat post but before you tighten the Zip tie drop a second zip tie so it drops down the length of seat post… tighten the first zip tie tightly clamping the second zip tie and cut to length… genious or what ??

Get a seat dropper – scratching does work though

If you’re really worried about fatigue (and I never have been) then just mark the post at the side where it’s a lot less loaded.

RE:blurboy
was thinking about an adj.seatpost but the reliability issues botherd me.Not to mention the cost.It would of been the last straw between me and the wife after the money i spent on my new steed!