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So .. mate got some eBike brakes (SRAM Guide RE) cheap, they come off a Heckler... but we can't work out how to mount them...
I've got a fairly extensive set of postmount adapters...
His frame is a native 180 .. with a 180 rear and shimano/tektro just fit native
The Guide RE doesn't... it doesn't even seem its at the right angle...its not even close
Front is a native 180 fork... 203 rotor and no adapter works... including a SRAM +20 (its not like its within 1.5mm and washer its 10mm best case...)
Eventually we just started trying .. we tried +20, +40 +43 and even for the sake of completeness a +63
I even tried different styles (offset vs straight).. and even tried them backwards...
Got them on 4 bikes. We have used the SRAM rotors which I believe are 200mm and the SRAM mounts including the conical washers. No problems in fitting them. If you google them on images there are loads of pics which will give you some idea on how it should look
https://www.singletracks.com/mtb-gear/sram-guide-re-review/
Yeah the guide RE on my partner's bike required a little bit of filing on the adapter as the calliper would foul it. That was on a 200 mm sram rotor and lyrik fork.
Before anyone say's her bike's now a deathtrap she weighs nothing and it's since been through 3 weeks in morzine just fine.
My guess would be that they're supposed to have those cup & cone washers fitted, but you weren't supplied them.
I have RE on two bikes and they don’t work for me straight on. They seem to need faffing with the cup spacers at mentioned above. Odd cos my old RS brakes fitting straight on.
Ah so its the top hat / cone washers need fitting... RTFM
TBH the last (and only) SRAM brakes I've ever had I threw away years ago but from my dodgy memory they didn't need the top hat washers between the adapter and caliper?
My mind is probably blanking.. the whole experience of owning them was pretty traumatic but I've done bleeds for mates since and must not have noticed.
if using the sram spacer kit, need spacer, concave spacer, caliper, then concave and convex spacer. i only know this as i was desperately trying to set up my G2 rsc last night so they didn't rub, good brakes but PITA to setup, also don't even think about Hope rotors as the foul on the caliper
c_klein87
if using the sram spacer kit, need spacer, concave spacer, caliper, then concave and convex spacer. i only know this as i was desperately trying to set up my G2 rsc last night so they didn’t rub, good brakes but PITA to setup, also don’t even think about Hope rotors as the foul on the caliper
I guess there isn't much in the way of options...either some washers, the SRAM spacers or ultimately machine a mount off an existing one.
It's not my bike so I'm not going to go machining a mount... but knowing it is a non standard fit at least we can fit them.
I've them on my Scandal and the front is fine, as I've got a fork than runs 180 and I've a 180 rotor on it but the rear is a PITA.
The bike came with a 160 rotor and I've tried loads of combinations of adaptors/cup&cone/washers trying to set it accurately for a 180 rotor - not helped by the caliper sitting inside the seat/chain stays and the extra long pads (4 pot).
I gave up this week, and swapped them out for an old pair of Formula R1's I had on a my 26.
Kill me now but those cup and cone washers....
I just throw them away tbh. Last new bike I got from a shop had the caliper fixed directly on the mount at the C&C washers under the bolt doing... well... nothing other than taking up space.
Ive not been killed to death in all my mtb days so I chucked them away like I always do.
I’ve them on my Scandal and the front is fine, as I’ve got a fork than runs 180 and I’ve a 180 rotor on it but the rear is a PITA.
Is that using cone washers ?
Mate has a 35 with Native 180 but we were trying with a 203. The fork at least looks like it will work somehow. (It's a RS fork and SRAM brakes.. you'd think it would be easy)
and I’ve a 180 rotor on it but the rear is a PITA.
The bike came with a 160 rotor and I’ve tried loads of combinations of adaptors/cup&cone/washers trying to set it accurately for a 180 rotor – not helped by the caliper sitting inside the seat/chain stays and the extra long pads (4 pot).
I gave up this week, and swapped them out for an old pair of Formula R1’s I had on a my 26.
This looks similar except the bike came with a 180 running 180 so now headsup on the cone washers we'll try but TBH it wasn't looking promising. More like to get one right would require a different spacing on the other... (pretty much as per any normal adapter).
Kill me now but those cup and cone washers….
I just throw them away tbh. Last new bike I got from a shop had the caliper fixed directly on the mount at the C&C washers under the bolt doing… well… nothing other than taking up space.Ive not been killed to death in all my mtb days so I chucked them away like I always do.
Reusing them or over torquing seems like a formula for death (or more likely wrecked forks/frame) ... if the cone bit snaps you're basically putting a slide hammer on the bolts...