February 14, 201214 yr I have just received my new tapered bearings and now I look at the old setup I am not entirely sure where to begin. Does anyone have any diagramatic instructions on a similar type of bike. I know I need to chill the small bits and warm the big bits. I have the old bearings out but I am not sure of best way to remove the lower races from the stem. I ordered the parts from Pyramid and great fast service but I also wonder if any spacers may be required etc or will the replacement just fit straight on. All advice welcome.
February 15, 201214 yr Author There is a cup around the base of the tree - I am worried about damaging this - or does it come off as well. My parts diagrams shows nothing
February 15, 201214 yr There is a cup around the base of the tree - I am worried about damaging this - or does it come off as well. My parts diagrams shows nothing Hi Andrew, On Bultaco's I heat the bottom clamp around where the stem fits in then knock the stem out suppose it would work on a Montesa as well Cheers Ross
February 15, 201214 yr Author Hi Andrew, On Bultaco's I heat the bottom clamp around where the stem fits in then knock the stem out suppose it would work on a Montesa as well Cheers Ross Spot on Ross - thanks for that - now to get the blasted lower race out of the frame ... there is about 1 mm of bearing surface to work on
February 15, 201214 yr Assuming you bought the same size as I did when I replaced them in a 247 and MH349 they are a straight replacement, no spacers needed. edit: can't remember the size as too long ago. Edited February 15, 201214 yr by Woody
February 15, 201214 yr Author Two hours to remove old bearing and 10 minutes to fit new ones - thank Gott I don't have to do that too often. Edited February 15, 201214 yr by keychange
February 15, 201214 yr Is it a conversion from loose ball bearings to tapered roller bearings you have fitted?? If so I wonder if there is a kit for my Cota 200?? Ian
February 15, 201214 yr Author Is it a conversion from loose ball bearings to tapered roller bearings you have fitted?? If so I wonder if there is a kit for my Cota 200?? Ian Yes it is a conversion to tapered - I got mine from http://www.pyramidparts.co.uk/ tell them year and model and they appear to have a good handle on what takes what - and their service is great.
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