Forum menu
[Closed] New bars and trigonometry - help required.
I have risers on the bike at present with 25mm rise. These are held in a 90mm, 12 degree stem. I am fitting flat bars to the bike and have a 10mm spacer to lift the stem by. Therefore I have to find another 15mm elevation so what stem angle do I need to get to achieve the same riding position?
you'd need to change the length as well - longer stem to keep it as far forward.
if you;re trying to replicate the exact position, why the change?
Laying that out on cad it suggests 14.2° with a 2mm loss in length to the centre of the stem. I'd definately get a mathmatical opinion though.
Remember wider bars need a shorter stem to retain the same body position.
And make sure your brake levers don't hit the top tube too!
NIGHTMARE.
'Why the change?' I am fitting bar ends to the bike and cannot bear the riser/bar-end combination. The new bars are 30mm wider so grips will be the same distance apart.
I suppose the best bet is to fit them with the immediate 10mm lift that spacers allow and go from there. Remember quill stems? How easy life was back then...
what more new bits i dont belive it or recycling again
what more new bits i dont belive it or recycling again
Oh, all new, Dave. All new 😉
will bring in maths book for you so can get darren to work it out check your info mail sent you something with new baby can you afford it