Hebie Chainglider photos

Sadly, only from my phone (and using the flash) at the moment. Still they give an idea of the way the Chainglider looks on my Bullitt Cargobike.

I think it looks pretty discrete but the function was what really mattered 🙂

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  1. Looks a bit ‘tight’ for a chainguard? How does it deal with increasing slack without dragging the chain in the casing?

    • Hi Chris,

      It is not like a traditional chaincase. The Chainglider rests on the chain anyway. Material is quite low friction – no good for racing but seems fine for everyday use.

  2. Hebie Chainglider on Bullitt
    Looks great!

    Looking at the photos, an area of concern, where ingress of contamination seems likely, is the front chain-ring running in a slot in the Hebie. I suspect that the side adjacent to the rear tyre and mudguard will get spattered with gritty water. From there it will almost inevitably get onto the chain.

    This is easily established when the bike has dried after a wet ride. It may be desirable to fit a spray shield to prevent this. IIRC, only a small amount of grit is needed to reduce the longevity of a chain.

    I don’t wish to offend, I offer my thoughts as to a potential solution. You are of course free to use, modify or ignore these suggestions as you see fit.

    Auxilliary spray guard.
    First option is a circular disk with a centre cut-out (possibly with a slit to make fitting and removal possible without removing the crank). May need ‘ears’ / tabs to facilitate attachment to the Hebie. May be possible to attach to Hebie with exterior quality self-adhesive hook & loop tape.

    Second option, it may be feasible for the disk to be mounted on the crank arms / chain-wheel and to rotate with the cranks. This arrangement will probably require ‘spacers’. This may be the least satisfactory option regarding protection.

    A third option is to attach the shield to the frame by cable ties. The shape would be most likely be vaguely triangular, two of the sides being the seat-tube and the chain-stay (modified as required with tabs etc. for mounting purposes). The third ‘side’ (towards the rear hub), may be best if it isn’t straight.
    It may be best if the lower edge would lie on the tyre side of the chain-stay and extend slightly below the stay and any cables routed under the stay to facilitate drip formation.

    The upper part might need ‘sculpting’ outwards to deflect the rain of crud from above. With ‘Correx’, this might be achieved with wire (coat-hanger?) inserted into one or more of the corrugations. With polypropylene sheet, the wire could be threaded through holes punched for this purpose. Alternatively, gentle heat could be applied while bending.

    An oversized prototype could be made from breakfast cereal cardboard, matt side towards the tyre and fitted for a short, wet ride to see whether it’s a really worthwhile exercise. It would be beneficial for a partial outline of the frame and the Hebie to be traced on the cardboard with a water resistant marker. The spatter pattern would greatly assist in optimising the shape required.

    Potential Materials
    ‘Correx’ – corrugated plastic (used for sign-making – as used for Estate Agents’ ‘For Sale’ signs). Available in various colours and thicknesses. Stiff and very light, unlikely to be noisy.
    An alternative material is polypropylene sheet. Often used for modern ring binders. Available in colourless.

    Notes.
    If the final shape uses re-entrant (inward) corners, it’s important to drill / punch a neat hole at the ‘point’ of the corner. Crack propagation in sheet materials is likely to begin from sharp inward corners.

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