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Old 2019-05-30, 07:38 PM   #2296
pierrox
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Thanks for the link DrD, Sheldon is like the messiah when it comes to wheels!

Here are some photos of the final build. No caliper as I mainly wanted to measure the position of the disc with regards to the frame. 4mm. Same distance I measured on my other unis with in-board disc!

Mad4One has caliper tabs on both sides of their frames, I wonder if I can fit a 32" wheel in a 29+ frame...





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Old 2019-05-30, 08:22 PM   #2297
MUCFreerider
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Quote:
Originally Posted by pierrox View Post
Here are some photos of the final build. No caliper as I mainly wanted to measure the position of the disc with regards to the frame. 4mm. Same distance I measured on my other unis with in-board disc!
Sweet!! I agree that the spokes should be fine. As to the D'Brake, I would just add a "Hugo strut" as it's called named after the inventor on this forum (who sadly passed away in December). I have 2 Hugo struts after braking my D'Brake a while back. On my 36" Oracle with a 203 disc I do lots of heavy XC and I feel fine with it. You can find pictures here on the forum. Mine is less pretty than those here but works just fine (on my Nimbus 26" it's attached to my rim brake mounts, but on my 36 there are none and I just used a run-of-the-mill pipe mount from the hardware store).

I get my 3rd generation Schlumpf hub next week and will be putting it in a KH29. If I have any major problems getting the disc to fit (I expect to do some grinding), good to know there's another option...

Quote:
Originally Posted by pierrox View Post
Mad4One has caliper tabs on both sides of their frames, I wonder if I can fit a 32" wheel in a 29+ frame...
I'm not an expert on the Mad4One frames and don't have one myself, but I think it depends on the tire. I know Marko makes them for really wide plus tires like the 29x3.25" Crux. I measured my 29x3.0" Maxxis on a 47mm KH 29 rim to 30.5" and there's room in the KH frame. I would just write Marko and ask him and he cen tell you right off, as he's really good with technical stuff.

Hmm... I just looked at the photo on the website: https://unaruota.com/ZC/index.php?ma...io22p8hubv6lj7

I don't know: In the photo with the Crux 29x3.25 on a 46mm rim (which should be approx 30.8") it looks to me like only about 1" space to the crown, so my rough guess would be a plain vanilla 32" might fit, but anything wide or knobby is going to be pretty darn close... but there aren't so many 32" tires anyway... the nightrider isn't so high, so just might be possible...
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36" Nimbus Oracle, VCX 100/125/150, 200mm disc
29+ KH, Maxxis DHR II 29x3, 127/150 Spirits
Schlumpf (KH29) Duro Crux 29x3.25 137/117 Spirits
26" Nimbus, Maxxis DHR IIx2.8, 117/137 Sprt
19" Trials Impact Athmos
20" Qu-Ax Profi Freestyle, 89mm VCX

Last edited by MUCFreerider; 2019-05-30 at 08:23 PM.
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Old 2019-05-30, 08:26 PM   #2298
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Oh, just remembered that I'll see Marko again weekend-after-next at the final stage of the Italian Muni Race in Villanders, South Tirol, Italy, so I will look and ask him.
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36" Nimbus Oracle, VCX 100/125/150, 200mm disc
29+ KH, Maxxis DHR II 29x3, 127/150 Spirits
Schlumpf (KH29) Duro Crux 29x3.25 137/117 Spirits
26" Nimbus, Maxxis DHR IIx2.8, 117/137 Sprt
19" Trials Impact Athmos
20" Qu-Ax Profi Freestyle, 89mm VCX
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Old 2019-05-30, 10:03 PM   #2299
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Laces

I like it.
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Old 2019-05-30, 11:15 PM   #2300
mowcius
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Another option is a Qu-Ax frame. They don't currently sell the 36" RGB ones separately but the QX series ones are also 100mm spacing with a disk mount on the left hand side.
I'm using one of their QX frames for my 32" freewheel with internal disk hub.

Quote:
I get my 3rd generation Schlumpf hub next week and will be putting it in a KH29. If I have any major problems getting the disc to fit (I expect to do some grinding), good to know there's another option...
I do feel like this adapter is a far superior option as it takes the braking stresses away from the gearing, and if you do have some kind of slippage (partial shift, bearing slip), the brake will still actually be effective at stopping the unicycle.
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Last edited by mowcius; 2019-05-30 at 11:19 PM.
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Old 2019-05-31, 12:05 AM   #2301
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Nimbus Oracle frames are 100mm and have caliper tab mount on left side.
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Old 2019-05-31, 04:42 AM   #2302
lobbybopster
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disc adapter

Quote:
Originally Posted by mowcius View Post

I do feel like this adapter is a far superior option as it takes the braking stresses away from the gearing, and if you do have some kind of slippage (partial shift, bearing slip), the brake will still actually be effective at stopping the unicycle.
I made this for an early schlumpf #102 sqr. tpr. so I could add a inside frame disc to preserve this fine mechanism.
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Old 2019-05-31, 07:44 AM   #2303
pierrox
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Quote:
Originally Posted by MUCFreerider View Post
... "Hugo strut" as it's called named after the inventor on this forum (who sadly passed away in December).
Wait wait what??? What happened? I remember exchanging with him here.

Quote:
Originally Posted by MUCFreerider View Post
Oh, just remembered that I'll see Marko again weekend-after-next at the final stage of the Italian Muni Race in Villanders, South Tirol, Italy, so I will look and ask him.
I've reached out to him and he's already replied: yes it works, they actually made a G32 using their L frame for a swiss lady.

Quote:
Originally Posted by lobbybopster View Post
I like it.
Thanks, the guy who came up with this idea did a pretty good job!

Quote:
Originally Posted by mowcius View Post
Another option is a Qu-Ax frame. They don't currently sell the 36" RGB ones separately but the QX series ones are also 100mm spacing with a disk mount on the left hand side.
I'm using one of their QX frames for my 32" freewheel with internal disk hub.
Interesting! I spoke to David at QU-AX as he's following this build and he told me they might do a small batch of actual 32" RGB frames in a couple of months - only in green.
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Old 2019-05-31, 08:47 PM   #2304
mowcius
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Quote:
Originally Posted by MuniAddict View Post
Nimbus Oracle frames are 100mm and have caliper tab mount on left side.
Nimbus Oracle frames are only 100mm spacing for 29" and smaller. The 32" and 36" have 125mm width disk hubs.
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Last edited by mowcius; 2019-05-31 at 08:47 PM.
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Old 2019-06-02, 10:01 AM   #2305
pierrox
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I measured the space between the disc and the spokes and it comes just under half an inch. Which is too little to fit a current caliper as everyone has switched to dual pistons. Lobbybopster dealt with this problem using a Coda caliper - single piston. I'm trying to find one, but no luck yet. Anyone can point me to a single piston model still in production, that would be great. I'm also looking at the second hand market.

Another option would be a cable operated disc caliper, they seem thinner but I have yet to find dimensions on the web. Looks like the Shimano CX77 could be a good candidate -single side- or the TRP Spyre but the dual side operation could make it too thick.

I read somewhere that calipers for trial bikes are narrower, but then again can't quite find dimensions out there.

I can also gain a couple of mm by bringing the disc closer to the frame, won't be enough for a regular hydraulic caliper though.
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Old 2019-06-02, 03:15 PM   #2306
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Quote:
Originally Posted by pierrox View Post
I measured the space between the disc and the spokes and it comes just under half an inch. Which is too little to fit a current caliper as everyone has switched to dual pistons. Lobbybopster dealt with this problem using a Coda caliper - single piston. I'm trying to find one, but no luck yet. Anyone can point me to a single piston model still in production, that would be great. I'm also looking at the second hand market.

Another option would be a cable operated disc caliper, they seem thinner but I have yet to find dimensions on the web. Looks like the Shimano CX77 could be a good candidate -single side- or the TRP Spyre but the dual side operation could make it too thick.

I read somewhere that calipers for trial bikes are narrower, but then again can't quite find dimensions out there.

I can also gain a couple of mm by bringing the disc closer to the frame, won't be enough for a regular hydraulic caliper though.
I measure a minimum space needed between the disk and spokes on my TRP Spyre mechanical caliper as 11/16". Looks like it would be too thick.
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Old 2019-06-02, 05:33 PM   #2307
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Thanks Jim!
I might order a Shimano then, just to be able to measure it! And I can always send it back.

Anyone here has a spare Coda or other single piston caliper, I'm taking it! Even better if you're located in Europe.
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Old 2019-06-12, 02:10 AM   #2308
Pinoclean
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Does Schlumpf innovations ever respond to emails?

I have been trying to get parts for a broken schlumpf hub for 3 months.

Sent him a list of what was needed March 1st, said they would ship it a week later, never heard from them again and wont reply to any emails.
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Old 2019-06-12, 02:28 AM   #2309
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Originally Posted by Pinoclean View Post
Does Schlumpf innovations ever respond to emails?
I was pretty successful communicating with Schlumpf through the office manager. Not sure it's appropriate to copy her email into this thread, but PM me if you need it.
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Old 2019-06-24, 05:15 AM   #2310
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Retro Triton Schlumpf Build with 32h Rim

I'm taking this thread back 10 years with my recent retro Schulmpf Triton 29er build:

Build highlights:

Triton Frame purchased from Sidd here on the forums

WTB Ranger Tough 29 x 3.0 tubeless tire

KH One Saddle and KH bars with brake bash guard.

Milled out KH Moment cranks

Magura Rim Brake with custom handle attachment made from a Magura mount and washers

Schlumpf hub #083 (acquired from Corbin) Laced to a 32h Surly Rabbit Hole rim (great lightweight 50mm wide tubeless rim). I had to do some special spoke lacing, but it works fine so far.

I chose this odd wheel setup because this rim was the only rim brake compatible rim that also allowed for a good tubeless wheel. I prefer rim brakes and my hub is too old for disc. The hub is also likely out of any warranty.

Note - since taking the pics I had to sand the anodization off of the rim sidewalls to reduce brake squeal.

Spoke lacing notes:
Lacing a 32h rim to a 36h hub involves skipping a hole on opposite sides of each hub flange. I decided to skip holes directly across from each other, and to match the hole skipped on both hub flanges in order to even out tension on the rim as well as possible. I chose the most damaged looking spoke hole to skip and the other on the opposite side. I also had to bevel the spoke holes on both sides ( older hub had only 1 side beveled) since skipping a hole causes 1/2 of the spokes to be oriented backwards coming out of the hub.

With the Schlumpf hub and the Rabbit hole rim, Spoke lengths for a 3x 32h pattern were 293mm, and a 36h 3x pattern were 287mm.

I had to buy spokes that varied in length between the 2 patterns (and even had to buy 8 spokes longer than the 32h length). The spokes angling back over the skipped hole (2 holes away from the skipped holes) had to be 295mm. There were 8 of these. The next spokes angling over the skipped holes (4 holes away from the skipped holes) were 291mm. The next set of 8 (proceeding out from the skipped holes again) should be 289mm long (I used 291mm and ground the ends down). The final set of 8 should be 287mm long (I used 289mm and ground the ends down). I chose 16mm long spoke nipples to maximize the threaded length (in case my spoke lengths were too short). The picture of the hub and spokes shows How the angle of the spokes gets more perpendicular to the hub/rim as the spokes crossing over the skipped holes get farther from them.

NOTE - the hub pic has a few optical illusions: None of the spokes touch the hub flanges even though it looks that way in the hub pic. Also, one of the spokes looks damaged in the hub pic, but its not.

This wheel was a little more difficult to true (had a bit of a hop), but now that its done, it seems just as solid as any other uni wheel I've built. Time will tell I guess.
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Last edited by caseytronic; 2019-06-24 at 05:29 AM. Reason: added content
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