No announcement yet.

2016 Salsa Marrakesh flatbar frameset, BBSHD, Alfine 8 IGH

  • Filter
  • Time
  • Show
Clear All
new posts

    2016 Salsa Marrakesh flatbar frameset, BBSHD, Alfine 8 IGH

    Initial Specs: 68mm motor, 68mm bottom bracket

    My first build was a 2016 Priority Eight with a BBSHD motor. The aluminum frame and/or frame geometry was unstable heavily loaded, so I found a never-built 2016 flat bar Salsa Marrakesh steel frameset to swap over to. I'll need to find/fabricate some sort of downtube shifter boss cable guides. It has a 68mm BB and supposedly can clear a 700c 50mm tire:

    Click image for larger version  Name:	417vs3ObYyL.jpg Views:	1 Size:	26.5 KB ID:	82805

    There are/were two versions of the Marrakesh - flat bar and drop bar. The flat bar version has a significantly longer wheelbase, reach and top tube than the drop bar version.

    I do like the 135mm swing dropouts - as with the Paragon plates, thru axle and Rohloff replacement plates are available:

    Click image for larger version  Name:	4110mUtrzkL.jpg Views:	1 Size:	30.9 KB ID:	82804

    The drivetrain should be boringly straight-forward - a 68mm BBSHD and Luna two-piece Eclipse 42 chainring should line right up with the Alfine 8 offset 1/8" 20T sprocket. I may need to consider some low-end bump cushioning and a seat bag for a spare tire/tubes/CO2.

    To be continued.
    Last edited by ncmired; 09-18-2022, 03:53 PM.

    Nice frame, huge triangle and great dropouts.


      Love the color. Apparently we have similar tastes.


        Chain line calculation:
        Front Chain Line (measured) Front Chain Line (calculated) BB Width BB Spacer Width Motor Motor Published Width Chainring Chainring Published Offset Chainring Spacer Width IGH Hub Hub Published Nominal Chain Line Sprocket Offset Hub Corrected Chain Line Calculated "cocked" chain line
        48.15 47.05 68 +4 BBSHD 33.85 Luna Eclipse (BBSHD) -24.8 0 Shimano Alfine 8-speed 45 +3 48 -0


        • Cezar
          Cezar commented
          Editing a comment
          I have a similar system: BBSHD 1kW engine, the bike is used hybrid: - A700 rigid front, Alfine 8 with chain tensioner at the back, I changed the sprocket from 18t to 22t, factory front 46t, perfect chain line, does not require any washers. I'm interested in how you programmed your driver. My battery has 48V / 18Ah, but it has poor 13s6p cells - I can permanently charge it according to the manufacturer's instructions only with 15A current - peak and short-term up to 35A, so I programmed for max 21A and cut off battery 41V. I also programmed a low start of the campaign with approx. 10% power. I am interested in your settings. This weekend I will be making my first tests, so far flat - Warsaw - Poland.
          Last edited by Cezar; 04-16-2020, 10:02 AM.

        Hi Cezar, thanks for your inquiry.

        I've not spent much time altering the, in this case, BBSHD's setting, other than at times limiting the max current down from the default 30amps, to if I remember correctly 20amps. Why? Because where I live the summers are hot and humid, and I use this bike primarily as a hauler - a total rolling weight approaching 200kg. After melting a nylon gear, I'm always concerned about shedding heat. I've also concerns about battery discharge heat.

        Anyway, here are the screenshots of the current configuration - pretty typical other than the throttle max speed limiting:

        Click image for larger version

Name:	Basic_screen.png
Views:	1958
Size:	59.8 KB
ID:	104280

        Click image for larger version

Name:	PA_screen.png
Views:	1919
Size:	55.6 KB
ID:	104281

        Click image for larger version

Name:	Throttle_screen.png
Views:	1897
Size:	45.0 KB
ID:	104282

        There are configuration setting wizards on the forum - I'm not one of them. Regarding batteries, for the most part I use 52 volt 14S5P 17AH tray-mount jumbo shark batteries, and am considering getting a 52 volt 14S6P 21AH mega-shark tray mount battery, if funds ever permit.


          Thanks for the quick reply !

          Listening to the suggestions of colleagues with more experience, I programmed my bike as below (without off road, without major elevations in Warsaw, but with a planned vacation in the south of Poland in the mountains where there are long and high climbs, but with a lazy cadence of max 70, ratio Alfine 8 22/46t ),
          When will the nylon wheel on my BBSHD be in danger?

          my settings

          V min 41V
          I max 21A (due to the battery and manufacturer's recommendations)

          Curent limit Speed limit
          1 1
          12 20
          16 25
          22 35
          30 50
          40 70
          52 95
          66 100
          82 100
          100 100
          PST DubleSignal-24
          DAL By Display Command
          SL By Display Command
          SC 1
          SSM 1
          SD 4
          WM Uneterminated
          SD 8
          CD 8
          SD 0
          KC 100
          Throtle Handlle
          SV 11
          EV 42
          M Speed
          DAL 9
          SL By Display Command
          SC 10


            Originally posted by Cezar View Post
            When will the nylon wheel on my BBSHD be in danger?
            Great question, but hard to answer - how about, when you can't cup the motor in your hand for more than a few second because it's too hot. You earn extra points if you can check it underway from the saddle!

            Just joking - if you're concerned about it with your terrain circumstances, Luna's metal replacement gear might help.

            Sounds like a pretty place to vacation, BTW.


              Previous settings have not stood the test of time .. New are much better, more practical - the battery lasts longer. The voltage drop is about 1V / 10 km - for 4, 5, 6 degrees, for 3 even up to 1V / 15 km. The first two gears are practically for driving around the so-called chimney - that is, in the yard - drive to the garage, to a nearby store - trips to 100m .. The other is a good fast asphalt journey - without using the handle - sometimes moving off from under the lights, or passing on the lane to the other side of the road. A light uphill ride, approx. 300m long and 30m difference - calmly at 4 and 5 - at a speed of 25-30 km / h - without getting tired. Higher grades await real climbs in the mountains.
              Speed limit Curent limit
              1 1
              30 24
              60 30
              100 37
              100 45
              100 54
              100 64
              100 75
              100 87
              100 100


                Hi, it seems like you might be the person I should talk to. I am wondering if I can/should swap the stock cassette and derailleur for an IGH on my 2015 Trek X-Caliber 6 29er hardtail. I just ordered the BBSHD kit from Luna. I understand an IGH wheel won’t be cheap, but I love the upsides. Do you have a preferred wheel maker or guide for the swap? I have built wheels, but I think I’d prefer to pay for that service.


                  Hi, thanks for the question. I searched a bit for in-depth technical specifications for your bike's frame but panned out. I'm hoping it has a standard English 68-73mm bottom bracket, and 135mm QR/bolt compatible rear dropouts with some room in the dropout to engage the critical IGH anti-rotation washers.

                  You'll also need clearance for the hub's axle nut wrench and fit a chain tensioner.

                  With the Shimano / Nexus 8-speed hubs, you need to hit an approx. 48mm chain line, which means using the Luna Eclipse 2-piece chain ring or the Lekkie 40 tooth ring set. If you go with the Shimano Nexus 3-speed (which ends up 6mm farther out), you have a little more chain ring / line flexibility.

                  On the wheels, I usually build my own because, well, hardly any established online wheel builder source IGH hubs (especially the older Shimano 8-speed SG-S501 hubs I prefer), and I think they all now require you to buy the components from them. I did buy the Nexus 3-speed 26" wheelset for a step-thru build from Universal Cycles - they have a very nice online wheel selector tool, and the wheels have remained tight and straight. Plan on adding a shift sensor.

                  UPDATE: Velocity Wheels (Michigan U.S.) will build wheels using your hubs, providing you purchase the rims and spokes from them.
                  Last edited by ncmired; 07-15-2022, 12:45 AM.


                    This is so helpful! It’s exactly the kind of direction I need to continue. It will be a few weeks before I have something to show, but I’ll post my progress. Love your detailed work. Thanks again.


                      Spring maintenance & upgrade time - the Marrakesh gets 650B wheels (Schwalbe Bin Ben Plus tires, Alfine 8 IGH hub, Sapim spokes, and Cliffhanger rims), on which people have stuffed 2.4 inch wide tires - although I found that the Schwalbe Super Moto (not X) 2.4 inch tires I wanted to use don't comfortably clear the chain stays. It also gets a Lekkie 40 tooth chainring, driven by a Luna Ludicrous V2 controller - this and the 68mm BB hit the relatively tight 48mm chainline needed by the Alfine 8. The chain is an 1/8 wide Connex 108.

                      The battery is an 52 volts 21AH, capable of 50 amps continuous, and I've tuned down the V2 controller to not trip the BMS. The front bag mounts via a quick release decaleur, with a snap buckle safety strap. The battery weighs a lot, so I added a series of 5mm rivet nuts to help out the two existing bottle mounts - all 4 battery tray bolt holes are used.

                      Click image for larger version  Name:	20220321_135857.jpg Views:	61 Size:	2.00 MB ID:	149246

                      Click image for larger version  Name:	20220321_140026.jpg Views:	52 Size:	994.4 KB ID:	149247

                      The MKS Esprit EZY Superior quick-release pedals are tool-less and safety clip-less, and operate not unlike an air hose release, but with an additional 1/4 turn safety lock:

                      Click image for larger version  Name:	20220321_135927.jpg Views:	52 Size:	542.7 KB ID:	149248

                      After bar change, dual battery mount addition:

                      Click image for larger version

Name:	20220909_123956.jpg
Views:	606
Size:	1.79 MB
ID:	155686

                      Last edited by ncmired; 09-09-2022, 12:50 PM.


                        Awsome build!
                        I´m thinking of buying the same frameset. Do I have to buy the "Rohloff Swing Plate", I do have a Nexus 3 which also needs a "non turn washer".


                        • ncmired
                          ncmired commented
                          Editing a comment
                          Thanks! Nope, you don't need to change the plates - I did as i wanted Rohloff OEM torque tab compatibility, in case I blow up the Alfine.
                          Last edited by ncmired; 12-02-2023, 08:00 AM.