The Shop > Tools
Harrison L5 rescue
Manxmodder:
--- Quote from: micktoon on February 05, 2014, 07:14:20 PM ---Hi Oz , funny you should mention this as I have been looking back through and also was looking at that nut thinking its been bodged up at some point, I have found a few of the usual rubbish attempts to fix things. My overall plan was to try to fix what I can when I am putting things back together, I have stripped the Norton gearbox today as that was notchy to slide from one cog to the next so I am going to give it all a good clean and with a diamond file de burr all the cogs that have edges burred etc, the apron will need the same sort of treatment too.
I know some parts like the top plide could do with scraped etc but will get it up and running and do bits at a time I think.
Cheers for your interest and observations Oz , I might be asking about more things as the various parts get sorted out .
Cheers Mick.
--- End quote ---
Hi Mick,
I agree with your logic,it's best to get her reassembled and make some notes of the things you feel could be improved or modified at a later stage rather than fall into the trap of trying to remedy every single niggle at initial assembly stage.
A running lathe with a few problems to sort is far more inspirational and easier to approach with enthusiasm than trying to perfect everything at the initial assembly stage and it turning into a project that becomes a chore. That is probably why we see so many unfinished projects for sale,where the builder has become fed up with remedying a seemingly endless list of problems with very little immediate reward and ultimately lost interest.
Back on the subject of spindle nose design and the dangers of threaded attachments coming undone when turning in reverse or stopping quickly from high speeds. Harrison circulated a spindle modification which provided a solution of sorts involving a shallow flat bottomed groove being machined into the spindle nose just behind the threaded portion. The chuck back plate is also modified by machining and fitting of a corresponding grub screw that registers into the groove on the spindle nose in order to prevent the chuck unscrewing accidentally.
I have a copy of the factory drawing and dimensions for this mod,but I have to say it isn't a great solution. I would much prefer to have a L00 taper spindle fitting and I have been working on some ideas to make a permanently fitted spindle adapter to convert from screw nose to L00 taper thus never having the worry of a chuck unscrewing itself under load.....OZ.
micktoon:
Hi Oz, The adapter idea is interesting , I had the chance of a L00 spindle once which I think would swap but I had already got most of the threaded nose stuff by then and knowing Harrison and all the minor changes they seem to have made I was not sure if it would have fitted anyway, at least without getting too involved.
I had already sort of made observations on what needed doing and most of it is in the parts yet to be put back on , i.e , the Norton gearbox, the Apron, tailstock and top slide. just waer and tear stuff so I will do what I can when I have things in bits but expect some things will end up coming apart in some area agian to solve all the problems.
I have started on the other 'bits' of the lathe and decided to do the oily dirty parts first, everything has had a general clean and most of the old paint scraped off ages ago but not clean enough for paint. The main lumps are , The Norton Gearbox, The Apron/saddle/Topslide and the tailstock. As you can see they are all rough looking compared to the lathe now ! . I intend to strip and inspect all these bits and repair/replace anything that is found to be not right, then anything missed will have to be discovered once the lathe is up and running and then go from there, hopefully most things should get fixed before its up and running this way.
This is what the Norton box looked like after it was 'cleaned' , I have found the two front bronze bushes are worn where the lead screw and feed screw go into the box, I have just de burred all the cogs and generally cleaned up everything, oilways had grease in them as usual. The screw cutting charts will need a cunning plan or they are going to let the job down, there was some new ones on Ebay but the wrong charts.
I have also got the belt covers back on so its looking more like a lathe and less parts lying about too.
These photos are to show the tool box that was say three feet from the back of the lathe only had grey dust not paint overspray land on it, first shot finger ready to wipe off , second shot same bit wiped clean with finger and paint still red and shiny under the dust, this is a main bonus of this paint.
Cheers Mick
Manxmodder:
Hi Mick, there's a whole load of Harrison mods and improvements I'd like to share with you in the future but if you follow the path your on now nothing will be wasted or lost anyway as any Harrison threaded fittings you invest in would be very easily resealable for no financial loss should you decide to copy my mods.
I've been looking at some of your wood creations and think they're real nice looking,especially like the Hare :drool: :drool: :clap:
micktoon:
Hi Manxmodder,
thanks for comments on the wood stuff I seem to flit from wood back to metal lol. The mods sound interesting, do you just mean for the spindle or other general mods too, there are a few things I would like to improve/ alter over time.
I now have the Norton box in bits , it needs various bronze bushes replaced and the odd shaft maybe sleeved, the problems have happened because oilways were blocked with old grease probably for years and years so even if oiled the oil was not reaching the areas it was needed. The apron and tailstock are also stripped to bare bones and odd thing needs fixed with these too, I am gathering up bushes etc and will fix then paint, I have not took photos but been grinding all the castings to make painting an easier job.
More to come soon .
Be interesting to see some pics of your mods :thumbup:
Cheers Mick
Manxmodder:
Mick,if you find anyone who has old stock of the Norton gearbox bushes I'd appreciate it if you would share their details with me.
Cheers,OZ.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version