Old 5 bolt hubs, new disc sizes - overlap?
- Thread starter coreygun
- Start date
petehaddock
Dirt Disciple
Re:
OK OK haha
What caliper is it out of interest? I thought pretty much all brake's since the old hope c2's etc were post mount style.
OK OK haha
What caliper is it out of interest? I thought pretty much all brake's since the old hope c2's etc were post mount style.
coreygun
Retro Guru
petehaddock":kjhrk4en said:OK OK haha
Hope C2, O2, Mini, M4's used 165/185+ discs, and came in PM and IS mounts.
Hope Mono Mini, and all other 'mono' calipers used 160/180+ discs and came in both PM and IS mounts for a few years, and then eventually phased out the IS mounts.
As it turns out, I have an old C2 PM and a Mono Mini IS, to confuse you:
coreygun
Retro Guru
Re: Re:
Well technically I think it was first just called the 'Hope 2pot disc brake' - which was an open system, and then later they introduced the closed 'C2'. So to distinguish the two more easily it was referred to as the 'O2'.
And in case you don't know the difference between closed and open: All modern systems are open, where the reservoir has a diaphragm which lets the fluid expand, but the closed ones, only available in the pre-mini systems, had the thumb adjuster on the reservoir and had to be manually adjusted to account for fluid heat expansion. Closed had the benefit of zero drag, but had to be continually adjusted.
Timoth27":2rf72mtt said:
Well technically I think it was first just called the 'Hope 2pot disc brake' - which was an open system, and then later they introduced the closed 'C2'. So to distinguish the two more easily it was referred to as the 'O2'.
And in case you don't know the difference between closed and open: All modern systems are open, where the reservoir has a diaphragm which lets the fluid expand, but the closed ones, only available in the pre-mini systems, had the thumb adjuster on the reservoir and had to be manually adjusted to account for fluid heat expansion. Closed had the benefit of zero drag, but had to be continually adjusted.
