April 2, 201412 yr Can anyone advise as to how the spider that carries the front chain wheel is attached to the shaft ? I have removed the lock ring, but the spider is firmly attached to the threaded shaft. I can't find a schematic on line. Thanks
April 2, 201412 yr Author Thanks for that. The prising the spider off with a big screwdriver makes me shudder !
April 2, 201412 yr Me too, because that centre bit wobbles as well, even when the chainring is on tightly.
April 2, 201412 yr Author Have you actually tried doing it ? If it is only "pressed" on, I will use a small gear puller. I just didn't like the idea of forcing it over the threads on the larger O.D. spindle. Edited April 2, 201412 yr by GBCS
April 2, 201412 yr Yes I've removed mine to clean out the cover. It is just a tight fit, it took me a while to get it off as I didn't want to damage anything. It sits on a larger diameter area than the threads I seem to remember, an octagon section. http://www.e-bikeshop.co.uk/image/cache/data/Electric%20Parts/Bosch%20Chainring%20Spider-500x500.jpg Edited April 2, 201412 yr by Artstu
April 2, 201412 yr Author All sorted and back together with the larger cog supplied by Martin. Thanks for the help. Edited April 2, 201412 yr by GBCS
April 3, 201412 yr Author I've gone for a 44t. I won't get out on it until Saturday, so I'll update the thread then.
April 4, 201412 yr Hi, Spider tools back in stock now - http://www.e-bikeshop.co.uk/eBike-Spare-Parts/bosch-spider-tool Regards Martin
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