wilson882 Report post Posted July 13 Hi I am looking for a crankshaft for a very early Mk 1 247 cota (1969) as the one i have is cracked any info welcome. Thank you Ian Share this post Link to post Share on other sites
feetupfun Report post Posted July 13 If you are stuck, replacement crankshafts can be made by suitable machine shops Share this post Link to post Share on other sites
wilson882 Report post Posted July 13 Yes thanks i might have to go that way if one cant be found that can be refurbished. Share this post Link to post Share on other sites
section swept Report post Posted July 13 6 hours ago, wilson882 said: Yes thanks i might have to go that way if one cant be found that can be refurbished. Looks like it’s been used as an anchor!⚓️ 1 Share this post Link to post Share on other sites
lorenzo Report post Posted July 14 Wilson - What distinguishes this early crank from later ones ? Would it be possible to use a later crank ? Is your engine no. 21M.....followed by earlier/later than serial no. 1079 ? (I have an engine broken with that serial no. - this one had snapped its crankpin.......) Share this post Link to post Share on other sites
wilson882 Report post Posted July 14 Hi Engine number on my bike 21m 718 Share this post Link to post Share on other sites
fourex Report post Posted July 16 On 13/07/2018 at 6:51 PM, wilson882 said: Hi I am looking for a crankshaft for a very early Mk 1 247 cota (1969) as the one i have is cracked any info welcome. Thank you Ian Try Dave in the US, known as "cyclesavant" on ebay, https://www.ebay.com/str/cyclesavantsmotorcycleparts/21M-Cota-Trials-247-250cc/_i.html?_storecat=949013919 . He acquired an enormous amount of Montesa NOS some years ago, can't see what you need on his site at the moment but that doesn't mean he doesn't have it, I have found him very reliable to deal with. Below is the earliest exploded view of a Cota 247 crankshaft that I can find, I think this covers your model, you could use these part numbers when corresponding with Dave or anyone else. Quality of pic is ordinary. Best of luck. 1 Share this post Link to post Share on other sites
wilson882 Report post Posted July 17 Hi thanks for that,i have been using cyclesavant for parts for this bike but he does not have at crank at the moment. Share this post Link to post Share on other sites
sdm Report post Posted July 26 I assume you have already tried Southwest Montesa in Arizona and Matt at Speed & Sport in Calif.... Share this post Link to post Share on other sites
wilson882 Report post Posted July 27 Thank you i will give them a try. Share this post Link to post Share on other sites
