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BBSHD teardown, maintenance and greasing

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    #16
    Personally it's something I do on my own bikes from the start just so I get it out of the way. 1000km seems like kind of an arbitrary point to do it at but it's as good as any.

    If it has not already been done and you got some other reason to do a full teardown it makes a lot of sense to regrease at that time. For example if you wanted to add additional waterproofing with dielectric grease, sealing the grommet on the controller etc, then you already have it open anyway so you might as well do the rest.

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      #17
      Not specific to bafang or BBSHD I've found that chinese manufactured machinery far too often uses insufficient amounts and very poor quality grease so I've been prone to open up items with grease soon into their life and repack bearings, etc.

      I tore into my BBSHD after using it for half a year or so for that reason and was happy that there was sufficient quantity and that it wasn't the really cheap stuff I've seen

      I think a lot of folks could leave theirs alone the entire life of their bike and never have an issue - OTOH whether for peace of mind, you ride very hard, you pile miles or maybe just like to tinker it's a good idea consider doing this effort... from my perspective it is a very simple mechanical chore (for chinese machinery, I think the BBSHD is well designed and easily maintainable- this ain't german stuff though! Click image for larger version  Name:	wink.gif Views:	1 Size:	439 Bytes ID:	85066), doesn't take all that long (took me less than an hour) and you will end up with a better job than the factory if you use a proper grease and have good basic mechanical skills

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      • TomBrenner
        TomBrenner commented
        Editing a comment
        Hi and thanks for the article. You peak my interests when said the Chinese didn’t put in good grease.Im about to replace my HD 1000w because it failed due to lack of grease. How soon if not sooner should I apply grease in a my new replacement,seems odd that a new motor and I need to be concerned with it needing maintenance.
        Ride safe.

      #18
      Thanks a lot for your comments. good news relub has not to be done many times.

      so I could buy the SCH100 grease and make the job on time on the primary.
      it is quite impossible to find mobile28 in Europe excepted in large quantity...

      I guess my ride is aggressive since I go up to 1400W during 20 minutes of uphill climbing with small rest of downhill during 3 minutes in the middle.

      After 2000 km the noise is still lower than bosch motors. But I will make the greasing/cleaning cession anyway.

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        #19
        If it weren't for the RTV sealing the wire and connector ports between the motor halves, it would be silly easy in my opinion... digging out the old RTV is the greatest pain by far for me and it's not that bad but if I'm complaining, that's my issue with it Click image for larger version

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          #20
          Originally posted by Sebz View Post
          This tutorial is to do maintenance on the BBSHD
          • Mobilgrease28 or any high quality grease that will not damage the nylon gear.
          I have been using everyday marine grease for years on bikes:https://lucasoil.com/pdf/TDS_Marine_Grease.pdf
          Then Phil Wood started repacking it and charging 1200% profit.
          Is this as good if not better than #28?
          http://www.ecllube.com/resources-for...ct-literature/
          https://www.ecllube.com/resources-fo...20Plastics.pdf
          Last edited by MichaelT; 06-06-2019, 05:01 PM.
          .
          .
          NO AIRBAGS .... WE DIE LIKE REAL MEN

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            #21
            I picked up a tube of Mobil SHC for $10 off of Amazon. Figure it will be good to have on hand when the time comes and prices have inflated.
            2018 Motobecane Boris Fat Bike BBSHD Build

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              #22
              I live in Australia and it's expensive to get Mobil 28. Most suppliers you must by a commercial amount and trying to order off ebay to send to Australia is expensive. There is a local product in australia made by Inox and the model is MX6. It is clay based, PTFE, non hardening, food based grease used in the food and beverage manufacturing for sprockets, machinery, conveyor lines, o rings, bushes splines etc. I have used it in my car's power window plastic sliders and after 6 years, it's still soft and not hard like other greases people use.

              Whats other's opinion on this stuff?

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                #23
                Originally posted by utsebike View Post
                I live in Australia and it's expensive to get Mobil 28. Most suppliers you must by a commercial amount and trying to order off ebay to send to Australia is expensive. There is a local product in australia made by Inox and the model is MX6. It is clay based, PTFE, non hardening, food based grease used in the food and beverage manufacturing for sprockets, machinery, conveyor lines, o rings, bushes splines etc. I have used it in my car's power window plastic sliders and after 6 years, it's still soft and not hard like other greases people use.

                Whats other's opinion on this stuff?
                This link will give you the product data sheet.

                http://www.exxonmobil.com/Xomfl/Core...lgrease-28?p=1

                Try to find an equivalent down under. Pay attention to the temperature range.

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                  #24
                  This is a very good article, I used it today to replace the nylon gear with the new steel gear. I did not read it carefully enough to realize the the gear includes a one way clutch. I installed it upside down and it did not work so I thought I broke something and installed my backup motor. I now have it installed correctly and once I get the new gasket I will put this motor back in service.

                  Comment


                    #25
                    Originally posted by utsebike View Post
                    I live in Australia and it's expensive to get Mobil 28. Most suppliers you must by a commercial amount and trying to order off ebay to send to Australia is expensive. There is a local product in australia made by Inox and the model is MX6. It is clay based, PTFE, non hardening, food based grease used in the food and beverage manufacturing for sprockets, machinery, conveyor lines, o rings, bushes splines etc. I have used it in my car's power window plastic sliders and after 6 years, it's still soft and not hard like other greases people use.

                    Whats other's opinion on this stuff?
                    Lithium-based is more appropriate.

                    http://www.eclubes.com.au/products/v...bilith-shc-100

                    Here's Mobile 28 in Australia

                    http://www.eclubes.com.au/products/v...mobilgrease-28

                    Mobilith SHC 100 greases from Acculube are superior performance products for a wide variety of applications at extremes of temperature. They combine synthetic base fluids with high quality lithium complex thickener. The wax-free nature of synthetic fluids and the low coefficient of traction (compared with mineral oils), provide excellent low temperature pumpability and very low starting and running torque. Mobilith SHC 100 Electric Motor Greases can reduce operating temperatures in the load zone of spherical roller and ball bearings. Their lithium complex thickener contributes excellent adhesion, structural stability and resistance to water.

                    These greases have a high chemical stability, and additives that provide both excellent protection against wear, rust and corrosion, and operating viscosity at high and low temperatures
                    Last edited by Scoonie; 02-29-2020, 11:51 AM.

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                      #26
                      I wonder if blue RTV would work instead of a gasket. Many automotive assemblies use the stuff these days.

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                        #27
                        I think if you did not want to use the original gasket for some reason, or needed to replace it and could not get the OEM gasket, That any gasket compound would hypothetically be doable. As well as the typical gasket maker kits you can find online that are paper/rubber/whatever which you mount and then trim the edges with an Xacto knife.

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                          #28
                          Originally posted by CoMoBiker View Post
                          I wonder if blue RTV would work instead of a gasket. Many automotive assemblies use the stuff these days.
                          Honda bond!! Lifetime auto-mechanic here and this is the best that I have used.

                          https://www.amazon.com/Genuine-Honda...3107926&sr=8-2

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                          • Sebz
                            Sebz commented
                            Editing a comment
                            Humm never heard of that, I will have to try it! Thx!

                          • calfee20
                            calfee20 commented
                            Editing a comment
                            Use sparingly

                          #29
                          I took off the secondary gear cover (behind the chainring) to clean and add grease. Found the sealed bearing cartridge that one sees from the outside (chainring side) of the unit is rocky--rough, like the grease was washed out of it. How do I pull it out of the cover and can I have a spec on a replacement bearing? Thanks.

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                            #30
                            There are YouTube videos how to remove the seal on a sealed bearing with a pick. That bearing is pressed in though, if it is messed up a replacement secondary comes with another pressed in place

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