Hope RX4 Caliper

Discuss light weight issues concerning road bikes & parts.
dvq
Posts: 42
Joined: Mon Sep 25, 2017 1:36 pm

by dvq

I'd get a set if I could actually find some in stock in the US.

by Weenie


Geordiepaul
Posts: 55
Joined: Fri Jun 30, 2017 7:15 am

by Geordiepaul

dvq wrote:
Wed Jan 03, 2018 4:40 pm
I'd get a set if I could actually find some in stock in the US.
I had to get my local shop to order them from Hope.

ooo
Posts: 444
Joined: Sat May 21, 2016 12:59 pm

by ooo

Hope RX4 weight info from bike24 (without photo on scale):

128g - Flatmount front (for Shimano)
116g - Flatmount rear (for Shimano)
123g - Postmount universal (for Shimano)

Hope RX4 weight info from r2-bike (with photo on scale):

153.2g - Flatmount front (for Shimano, with pads and bolts)
131.7g - Flatmount rear (for Shimano, with pads and bolts)
121.7g - Flatmount front (for Sram, with pads and bolts)
114.7g - Flatmount rear (for Sram, with pads and bolts)

122.8 - Postmount universal (caliper, with pads and bolts)
111.2 - Postmount universal (caliper, with pads)
83.2g - Postmount universal (caliper only)
'

MichaelB
Posts: 405
Joined: Tue Apr 22, 2008 4:31 am

by MichaelB

Looks neat there Geordiepaul - my frame is postmount, so that's the option I'd be going for (as well as I use a 140mm rear disc).

The other option that I considered was the Magura MT5/MT7, but their price is much higher.

I'll either stick with the Zee/Saint or try the RX4 when the time comes.

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Klaster1
Posts: 107
Joined: Mon Aug 15, 2016 10:25 am
Location: Krasnoyarsk, Russia

by Klaster1

Geordiepaul wrote:
Wed Jan 03, 2018 3:17 pm
They are sooooo much nicer, better quality and spares are easily bought.
Can you check if pads retaining pin and bleed nipples (if there's one) are aluminium or steel? I'm close to ordering a set of RX4 too.

fatcyclistchris
Posts: 2
Joined: Sat Jan 13, 2018 9:52 am

by fatcyclistchris

Geordiepaul wrote:I have an RX4 flat mount caliper as I got sick of Shimano calipers leaking (I've had 4 leak)
They are sooooo much nicer, better quality and spares are easily bought.

Image
Nice looking brakes. I'm thinking of getting some. How easy were they to fit? Easily done at home? Do you have to replace any barbs or olives?
Thanks

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Geordiepaul
Posts: 55
Joined: Fri Jun 30, 2017 7:15 am

by Geordiepaul

No more difficult than a Shimano caliper.
They do need a new barb and olive so if your cable is long enough to trim a bit off then it's not so bad. Otherwise new cable.

fatcyclistchris
Posts: 2
Joined: Sat Jan 13, 2018 9:52 am

by fatcyclistchris

Geordiepaul wrote:No more difficult than a Shimano caliper.
They do need a new barb and olive so if your cable is long enough to trim a bit off then it's not so bad. Otherwise new cable.
Cheers. Will check to see if I can pull some cable through the frame. Internal routing can be a nightmare sometimes

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scale29
Posts: 33
Joined: Sat Jun 04, 2011 5:40 pm

by scale29

Klaster1 wrote:
Thu Jan 04, 2018 6:08 am
Geordiepaul wrote:
Wed Jan 03, 2018 3:17 pm
They are sooooo much nicer, better quality and spares are easily bought.
Can you check if pads retaining pin and bleed nipples (if there's one) are aluminium or steel? I'm close to ordering a set of RX4 too.
They are steel.

User avatar
Klaster1
Posts: 107
Joined: Mon Aug 15, 2016 10:25 am
Location: Krasnoyarsk, Russia

by Klaster1

Well, I've got a pair now: a front flat mount Shimano and a post mount Shimano. Something tells me I'll have a hard time routing the front hose through the Workswell WCB-R-093 fork, it will either have to bend tightly (any advice, hot water?) or route it outside.

MichaelB
Posts: 405
Joined: Tue Apr 22, 2008 4:31 am

by MichaelB

Bugger there Klaster1 - one of the advantages with a banjo connection.

Maybe get a bit of sacrificial tubing and see what works. Looks tight though. :unbelievable:

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