Ben6 Posted January 26 Share Posted January 26 The helix rod on my MB 149 has broken. I've purchased a third party part from Custom Pen Parts but now realise that replacing the rod is not a job for a clumsy amateur like me ! Are there any UK based professional repairers on the forum who would be able to make the repair and what would be the cost please ? I say UK based only because it seems post Brexit that it is extraordinarily complicated and costly to send items abroad ! This picture shows the broken part and the replacement part I've purchased. Quote Link to post Share on other sites
Dione Posted January 26 Share Posted January 26 Take a look at this you tube video and you might be able to follow these instructions to do it yourself. Link to post Share on other sites
Ben6 Posted January 26 Author Share Posted January 26 6 hours ago, Dione said: Take a look at this you tube video and you might be able to follow these instructions to do it yourself. Many thanks. I watched the video but at the relevant point the presenter said if you have this problem, ie mine, then you're in for a lot of pain So best left, I think, to someone who knows what they're doing ! Link to post Share on other sites
ralfstc Posted January 27 Share Posted January 27 Have you read this thread? Once you understand way the spindle is attached, it seems a lot more do-able. I did this job most recently on a 146, and it's really mostly a challenge because of the need to find something thin and rigid enough to engage with the c-ring and pull it out. Replacement of the parts (using a long thin plastic tube of the right size) is straightforward. The Custom Pen Parts helix is a joy to install and use. If you want to send it out, Eric in Edinburgh, user name eckiethump on FPN, does three of these in his sleep every night and is much recommended. Good luck! Ralf Link to post Share on other sites
eckiethump Posted January 27 Share Posted January 27 Thanks Ralf, yes the removal of the "C" ring is a challenge, you can for £10, buy replacement "C" rings, I use a suitable sized and cut piece of brass tube then epoxy adhesive installed.If in future it ever needs taken out again, the part soaked in vinegar will release the epoxy. The replacement part you have there is of the Delrin variety, the PEEK ones are worth the extra. These break, due to users continuing to turn the piston knob after the piston seal has "bottomed". PM sent with contact details. Eric Ignorance more frequently begets confidence than does knowledge (Charles Darwin) http://www.wesonline.org.uk/ Link to post Share on other sites
Ben6 Posted February 9 Author Share Posted February 9 Excellent repair now completed by eckiethump. Thank you. Link to post Share on other sites
ralfstc Posted February 9 Share Posted February 9 Good to hear! He's a marvel, that man! (I know he'll read this and be embarrassed, but it's kind of true). Now if he could just support a decent team . . . . Enjoy your pen, they're a lot of fun! Ralf Link to post Share on other sites
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