# Alternative brake rotors for Schlumpf gen. 5 **URL:** \ **Category:** Unicycles and Equipment\ **Created:** [May 15, 2025, 3:42am UTC](https://unicyclist.com/t/alternative-brake-rotors-for-schlumpf-gen-5/291324 "2025-05-15T03:42:51Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![mattlost1wheel](https://unicyclist.com/user_avatar/unicyclist.com/mattlost1wheel/32/112998_2.png) [@mattlost1wheel](https://unicyclist.com/u/mattlost1wheel)\ **Post date:** [May 15, 2025, 3:42am UTC](https://unicyclist.com/t/alternative-brake-rotors-for-schlumpf-gen-5/291324/1 "2025-05-15T03:42:51Z")
Well, I have a bit of a disappointing update. I went for a ride today and while braking I heard a loud snap. I dismounted and looked over my uni but didn’t see anything. Upon returning home I gave it a closer inspection and found my disc rotor has cracked. ![PXL_20250515_033540527](https://unicyclist.com/uploads/default/original/3X/8/1/818cb5299c75e18b7c3e3734f30065b7a220613a.jpeg) Using an adjustable wrench I was able to seat it back together. But seeing as how this was already my second rotor (the first was warped and adding spacers only made it worse). For reference, I have one set of spacers between the rotor and hub. ---
**Author:** ![Eric\_aus\_Chemnitz](https://unicyclist.com/user_avatar/unicyclist.com/eric_aus_chemnitz/32/3757_2.png) [@Eric\_aus\_Chemnitz](https://unicyclist.com/u/Eric_aus_Chemnitz)\ **Post date:** [May 15, 2025, 6:54am UTC](https://unicyclist.com/t/alternative-brake-rotors-for-schlumpf-gen-5/291324/2 "2025-05-15T06:54:24Z")
Sounds as if an alternative supplier of Schlumpf rotors is desperately needed, since [Brakestuff](https://unicyclist.com/t/brakestuff-rotors-for-schlumpf-who-s-interested/278837) is out of business. ---
**Author:** ![mindbalance](https://unicyclist.com/user_avatar/unicyclist.com/mindbalance/32/101738_2.png) [@mindbalance](https://unicyclist.com/u/mindbalance)\ **Post date:** [May 15, 2025, 7:40am UTC](https://unicyclist.com/t/alternative-brake-rotors-for-schlumpf-gen-5/291324/3 "2025-05-15T07:40:02Z")
@jaco_flans 😁 ---
**Author:** ![bouin-bouin](https://unicyclist.com/user_avatar/unicyclist.com/bouin-bouin/32/135452_2.png) [@bouin-bouin](https://unicyclist.com/u/bouin-bouin)\ **Post date:** [May 25, 2025, 5:58pm UTC](https://unicyclist.com/t/alternative-brake-rotors-for-schlumpf-gen-5/291324/4 "2025-05-25T17:58:31Z")
BrakeStuff is in discussion to sell his company ---
**Author:** ![Eric\_aus\_Chemnitz](https://unicyclist.com/user_avatar/unicyclist.com/eric_aus_chemnitz/32/3757_2.png) [@Eric\_aus\_Chemnitz](https://unicyclist.com/u/Eric_aus_Chemnitz)\ **Post date:** [May 25, 2025, 7:30pm UTC](https://unicyclist.com/t/alternative-brake-rotors-for-schlumpf-gen-5/291324/5 "2025-05-25T19:30:42Z")
Anyone 'round with enough cash flow and business ambitions? ---
**Author:** ![Maxence](https://unicyclist.com/user_avatar/unicyclist.com/maxence/32/108164_2.png) [@Maxence](https://unicyclist.com/u/Maxence)\ **Post date:** [May 25, 2025, 8:32pm UTC](https://unicyclist.com/t/alternative-brake-rotors-for-schlumpf-gen-5/291324/6 "2025-05-25T20:32:21Z")
@jaco_flans 😏 ---
**Author:** ![mattlost1wheel](https://unicyclist.com/user_avatar/unicyclist.com/mattlost1wheel/32/112998_2.png) [@mattlost1wheel](https://unicyclist.com/u/mattlost1wheel)\ **Post date:** [May 26, 2025, 5:25am UTC](https://unicyclist.com/t/alternative-brake-rotors-for-schlumpf-gen-5/291324/7 "2025-05-26T05:25:08Z")
Florian agreed to send me two warranty-covered disc rotor replacements. I’ll take extra care to install them to spec. This time I’ll use a new brake + fresh pads to see if that makes any difference. That, however, still doesn’t hinder my appetite for a better solution. Barring my own homemade solution or if BrakeStuff doesn’t sell, I’m interested in the possibility of approaching Hope Tech to manufacture a Schlumpf-compatible rotor. As I understand it, their MOQ is 50 units. 50 units at ~$100 a piece = $5K. If there are enough interested parties I think it’s a worthy option to pursue. Thoughts? ---
**Author:** ![Maxence](https://unicyclist.com/user_avatar/unicyclist.com/maxence/32/108164_2.png) [@Maxence](https://unicyclist.com/u/Maxence)\ **Post date:** [May 26, 2025, 5:29am UTC](https://unicyclist.com/t/alternative-brake-rotors-for-schlumpf-gen-5/291324/8 "2025-05-26T05:29:49Z")
> [@mattlost1wheel](#): > > Thoughts? Count me in for 2 rotors 🖐 ---
**Author:** ![Maxence](https://unicyclist.com/user_avatar/unicyclist.com/maxence/32/108164_2.png) [@Maxence](https://unicyclist.com/u/Maxence)\ **Post date:** [May 27, 2025, 4:03pm UTC](https://unicyclist.com/t/alternative-brake-rotors-for-schlumpf-gen-5/291324/9 "2025-05-27T16:03:38Z")
As I had to ask for dual-hole cranks as well, I have sent them an email yesterday. Here’s their reply: > Hi Maxence, > > Thank you for your email and for considering Hope products. > > We can possibly manufacture a custom disc. Would you be able to send through a technical drawing we can pass on to see if its possible. > > We wont be able to manufacture custom cranks I’m afraid. > > Kind Regards, > > Sam So… Does anyone have a technical drawing of the Schlumpf rotor interface? 😁 ---
**Author:** ![On\_a\_wheel](https://unicyclist.com/letter_avatar_proxy/v4/letter/o/b5ac83/32.png) [@On\_a\_wheel](https://unicyclist.com/u/On_a_wheel)\ **Post date:** [May 27, 2025, 4:29pm UTC](https://unicyclist.com/t/alternative-brake-rotors-for-schlumpf-gen-5/291324/10 "2025-05-27T16:29:17Z")
Does Felix have the drawing of schlumpf rotor as he had brake stuff make up a few different designs ---
**Author:** ![Maxence](https://unicyclist.com/user_avatar/unicyclist.com/maxence/32/108164_2.png) [@Maxence](https://unicyclist.com/u/Maxence)\ **Post date:** [May 27, 2025, 4:42pm UTC](https://unicyclist.com/t/alternative-brake-rotors-for-schlumpf-gen-5/291324/11 "2025-05-27T16:42:58Z")
@mindbalance? 🙂 ---
**Author:** ![On\_a\_wheel](https://unicyclist.com/letter_avatar_proxy/v4/letter/o/b5ac83/32.png) [@On\_a\_wheel](https://unicyclist.com/u/On_a_wheel)\ **Post date:** [May 27, 2025, 5:10pm UTC](https://unicyclist.com/t/alternative-brake-rotors-for-schlumpf-gen-5/291324/12 "2025-05-27T17:10:52Z")
I believe that is Felix yes ---
**Author:** ![mindbalance](https://unicyclist.com/user_avatar/unicyclist.com/mindbalance/32/101738_2.png) [@mindbalance](https://unicyclist.com/u/mindbalance)\ **Post date:** [May 27, 2025, 6:17pm UTC](https://unicyclist.com/t/alternative-brake-rotors-for-schlumpf-gen-5/291324/13 "2025-05-27T18:17:43Z")
I’ll DM you about this more… I did first send a rotor to Torsten but then got interface confirmation info direct from Florian to ensure a good fit. As for Torsten’s design I did ask if I could get the full design files but as he is selling his business he wanted that to be part of the equity with that. So no joy there in terms of moving production but we can easily get someone else to design the same asymmetrical idea. It’s just the hub interface that needs to be on point and precise really. Likely as not Hope can design a nice rotor part themselves 🤩 ---
**Author:** ![Maxence](https://unicyclist.com/user_avatar/unicyclist.com/maxence/32/108164_2.png) [@Maxence](https://unicyclist.com/u/Maxence)\ **Post date:** [May 27, 2025, 6:21pm UTC](https://unicyclist.com/t/alternative-brake-rotors-for-schlumpf-gen-5/291324/14 "2025-05-27T18:21:18Z")
If Hope ever tells us that, based on the drawings, they can manufacture the rotors, do you think you could send them a rotor for them to study it? I believe it would be easier for you as you live in the UK. Maybe we should move this discussion to another topic as this is no more related to the G29 P-Frame build. We’ll probably also discuss in DM for the next steps to avoid polluting the thread 🙂 ---
**Author:** ![mindbalance](https://unicyclist.com/user_avatar/unicyclist.com/mindbalance/32/101738_2.png) [@mindbalance](https://unicyclist.com/u/mindbalance)\ **Post date:** [May 27, 2025, 6:24pm UTC](https://unicyclist.com/t/alternative-brake-rotors-for-schlumpf-gen-5/291324/15 "2025-05-27T18:24:41Z")
> [@Maxence](#): > > If Hope ever tells us that, based on the drawings, they can manufacture the rotors, do you think you could send them a rotor for them to study it? I believe it would be easier for you as you live in the UK 1000% happy to do that! I am sure in the past @rogeratunicycledotcom said he was in touch when the folks too so might have some insight into encouraging this to happen. But from your email quote above they sound pretty willing. 🤞 ---
**Author:** ![Eric\_aus\_Chemnitz](https://unicyclist.com/user_avatar/unicyclist.com/eric_aus_chemnitz/32/3757_2.png) [@Eric\_aus\_Chemnitz](https://unicyclist.com/u/Eric_aus_Chemnitz)\ **Post date:** [May 27, 2025, 8:21pm UTC](https://unicyclist.com/t/alternative-brake-rotors-for-schlumpf-gen-5/291324/16 "2025-05-27T20:21:24Z")
> [@Maxence](#): > > Maybe we should move this discussion to another topic as this is no more related to the G29 P-Frame build. We’ll probably also discuss in DM for the next steps to avoid polluting the thread done so ---
**Author:** ![Eric\_aus\_Chemnitz](https://unicyclist.com/user_avatar/unicyclist.com/eric_aus_chemnitz/32/3757_2.png) [@Eric\_aus\_Chemnitz](https://unicyclist.com/u/Eric_aus_Chemnitz)\ **Post date:** [May 27, 2025, 8:35pm UTC](https://unicyclist.com/t/alternative-brake-rotors-for-schlumpf-gen-5/291324/17 "2025-05-27T20:35:30Z")
I just contacted [Galfer](https://galfer.eu/bike/) and asked, if they are interested. Let’s see. ---
**Author:** ![Maxence](https://unicyclist.com/user_avatar/unicyclist.com/maxence/32/108164_2.png) [@Maxence](https://unicyclist.com/u/Maxence)\ **Post date:** [May 27, 2025, 8:37pm UTC](https://unicyclist.com/t/alternative-brake-rotors-for-schlumpf-gen-5/291324/18 "2025-05-27T20:37:48Z")
The only Galfer rotor I have had broke in two pieces when my girlfriend threw her unicycle into it 😅 Let’s hope this was a single non-representative experience, and they are able to manufacture such rotors! ---
**Author:** ![DrD](https://unicyclist.com/user_avatar/unicyclist.com/drd/32/3962_2.png) [@DrD](https://unicyclist.com/u/DrD)\ **Post date:** [May 27, 2025, 8:56pm UTC](https://unicyclist.com/t/alternative-brake-rotors-for-schlumpf-gen-5/291324/19 "2025-05-27T20:56:00Z")
As @finnspin said on the other thread, he did a drawing for a prototype to go with at Shimano IceTech rotor. The pdf he has here might be enough as a first cut drawing for Hope to see if this is something they think is feasible: > [@Schlumpf 2022 Build Questions](https://unicyclist.com/t/schlumpf-2022-build-questions/273299/217): > > I edited the .step file in my original file to make a cosmetic change (the outer cutout pattern somehow moved and was irregular in the original file). Also made a drawing, so if someone has a Schlumpf hub and a 203mm Icetech rotor, they could print it, cut it out and check fitment. Make sure the print is actually to scale if you do that, it’s not uncommon to encounter some border settings at the printer messing with the scaling. [Schlumpf to 203mm shimano icetech.pdf](https://unicyclist.com/uploads/short-url/fxTmIksFeiMEHjpT8ONTAIsLG7p.pdf) (33.9 KB) My main area of … I would suggest you ask if they could do a custom aluminium spider based on the inner of Finn’s drawing which would fit one of their floating disks. ---
**Author:** ![Maxence](https://unicyclist.com/user_avatar/unicyclist.com/maxence/32/108164_2.png) [@Maxence](https://unicyclist.com/u/Maxence)\ **Post date:** [May 27, 2025, 9:02pm UTC](https://unicyclist.com/t/alternative-brake-rotors-for-schlumpf-gen-5/291324/20 "2025-05-27T21:02:46Z")
Nice one! @finnspin, do you agree if I send your file to Hope? [Next page](https://unicyclist.com/t/alternative-brake-rotors-for-schlumpf-gen-5/291324.md?page=2)