I have seen now a couple of pics of bike where they turn there forks 180 degrees? or is it just a model version of being different?

i have here a pic for a example:

nick

manitou forks have the arch at the back

retract this while you still can nick!

That fork is correct.

Do you mean why do the manufacturers adopt a reverse arch?

'cos they are stupid or don't know what they are doing

wow that was quick, my page only just loaded lol

hehe wow u all did quick i retract lol

The theory is that since you can run the brace slightly lower with the same tyre clearance, it'll make the fork lowers a stiffer structure.

coatesy – Member

The theory is that since you can run the brace slightly lower with the same tyre clearance, it'll make the fork lowers a stiffer structure.

hows thatw ork when the tyre is a circle – front/back makes no odds

I had some reverse arch manitou black super airs years back and they put me off manitou for life – the flexiest forks i've ever used.

The wheel is not mounted inline with the centre of the fork legs- its offset forwards. So if you put the arch behind it can sit lower

hows thatw ork when the tyre is a circle – front/back makes no odds

offset, innit

i see

hows thatw ork when the tyre is a circle – front/back makes no odds

The wheel is not mounted central to the fork (if that makes sense!) The wheel is further forward than the fork legs due to the dropouts so the brace is in effect 'lower'.

Dammit, too slow!

Always liked my manitous… like riding a pogo stick! Glad to have the last of the decent marzocchi's now though! Re: OP, some supermarkets put the forks on backwards as they don't know any better, Pace used to have reverse arches back in the day, always looked a bit weird but kinda makes sense. Its also a "new" development in some time trial bikes as you can reduce drag or some such malarky, makes sense in my head, but so does areoplanes on conveyer belts…