v8ian
Posted a lot
Posts: 3,832
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^^ I am not convinced on that score Ian. Jaw type couplings have been around since the 1930's. Original invented by Lovejoy in the late 1920's, Either '27 or '29. What makes me think it's original is that it's cast ,not machined from bar ,and it's secured with two slotted screws, not Allen key set screws. Reynolds is best known for chains, but they invented all sorts of things and processes. What also makes me think it's original, is that Reynolds had a long standing relationship with Jones and Shipman. They actually bought Jones and Shipman Plc in the 1990's I Bow to your superior knowledge  , Now you have jogged my memory, I remember a couple of old 30 newdpaper presses that used theseto drive the copy counters. I noticed the slotted screws should have raised a bit more of a question, one thing I will say is running 2 joints like that is "bad pracitce" because it allows the shaft to drop out when wear occurs unless they are spigot mounted, sounds like an excuse to machine a single custom cplg |
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Atmo V8 Power . No slicks , No gas + No bits missing . Doing it in style.
Austin A35van, very different------- but still doing it in style, going to be a funmoble
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Only found that info out when I was trying to find out what model this was. Having looked at it, and its application, I will reinstate it as it was. Yes, it can drop out, but I think it is quite a good safety feature. If you have a smash up, chances are that will head south, instead of the gears. Also it sits between to heavy gearboxes, so it's ideal to slide in, adjust, and then tighten the screws. Wouldn't like to try fit a fixed length coupling in there , would be a nightmare !
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v8ian
Posted a lot
Posts: 3,832
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what about a bridgeport shear pin, IIRC they used a splitpin on the power feed.
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Atmo V8 Power . No slicks , No gas + No bits missing . Doing it in style.
Austin A35van, very different------- but still doing it in style, going to be a funmoble
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fer4l
Posted a lot
Testing
Posts: 1,497
Club RR Member Number: 73
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As ever, one pops by expecting to be dumbfounded and is not disappointed!  Thanks for sharing Cheers Matt |
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As ever, one pops by expecting to be dumbfounded and is not disappointed! Thanks for sharing Cheers Matt Thanks for the kind words, Matt |
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Stripping continues. Once back in my clothes I took some pics. This doesn't bode well. Something bent.  This is the shaft that drives the back slide. Methinks its a bit bent ,or the very least a bit Dieselweasled.....  Managed to open up the pulley. All kinds of good witchcraft going on inside here     But seeing I am more Merlot than Merlin at the moment , this cunning Wizardry will have to wait..... |
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what about a bridgeport shear pin, IIRC they used a splitpin on the power feed. Would be fiddly to say the least to fit. I like the Reynolds coupling set up. It's not a total ball ache to fit, and running a polyurethane cross in it, does protect the motor and reduction box from a fair amount of punishment.... |
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 That's how I think it should be assembled,yet these marks show different  That's how it's been all its life by the looks of it  That would explain the damaged teeth on the gears and the amount of general slop... |
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Paul Y
Posted a lot
Posts: 1,951
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I have sort of forgotten this is about a car build... But am enjoying it more than I thought possible. Please continue. P. |
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 From a a guy who looks remarkably like this  Gandalf to the rescue |
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mattiwagon
Part of things
Just got a work truck
Posts: 445 
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May 10, 2016 17:07:05 GMT
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You gotta love a hello kitty,d Gandalf!
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If they cant be nice f**k em!
84 low t25 panel 1.9td beige and rust combo
97 Goped Bigfoot G260RC with clutch conversion
97 Impreza turbo 2000 builders wagon 76k sold
04 Fabia vRs 50mpg pocket rocket
04 battered T5 pickup in blue!
Chainsaws lotsa Chainsaws
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May 10, 2016 20:26:50 GMT
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....and thanks to Westernstar we have had some Mazda goodness in the thread ,hahaha.
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May 10, 2016 20:38:34 GMT
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May 10, 2016 20:44:44 GMT
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Got the back slide off. Counterweight eliminates backlash  Connects up to the acme thread nut that carries the rear slide via two chains,over the two rollers  Unfortunately , over the years,coupled with grit,it removes the thread as well as the backlash   Think corrected technical term to describe the nut is fubar..... |
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May 10, 2016 23:44:01 GMT
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At least Acme nuts can still be had/made.
I'm guessing you're going to turn this sucker into a CNC cylindrical grinder..
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bstardchild
Club Retro Rides Member
Posts: 14,965
Club RR Member Number: 71
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May 10, 2016 23:51:15 GMT
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Well I've no idea where he's going with it but at least with all the pictures on here he'll have a little reference material when it comes to putting it back together - it's one advantage of a "build thread" that has often paid dividends for me in the past - take something to bits with a few pictures on the way - then much later put back together and be so glad for the pictures to help you make sense of the 5000 piece "baked bean" jigsaw puzzle in front of you.......
OT - Has anyone ever done that jigsaw - freaking drove me nuts one Christmas and I sacked it off as impossible (see footnote)
Footnote - well without adopting my grandfathers technique for dealing with a the clear blue sky on any jigsaw puzzle - filing the pieces and making them fit (not joking either)
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Last Edit: May 10, 2016 23:52:26 GMT by bstardchild: Spelling!!
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At least Acme nuts can still be had/made. I'm guessing you're going to turn this sucker into a CNC cylindrical grinder.. No plans to make it cnc. No need to. Just rebuild to get it back into good working order. Will clean up nut and leadscrew and have a look. Photo doesn't show up how worn it is. What should be near enough a square section thread form is worn to a point. Not far away from stripping. Would be a lot of work to make a new nut. Not enough material in the old one to sleeve it and recut the thread. Might look into fitting a ballscrew,but would need to find one with an imperial pitch,the same as the acme thread to keep all the graduations the same. |
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Well I've no idea where he's going with it but at least with all the pictures on here he'll have a little reference material when it comes to putting it back together - it's one advantage of a "build thread" that has often paid dividends for me in the past - take something to bits with a few pictures on the way - then much later put back together and be so glad for the pictures to help you make sense of the 5000 piece "baked bean" jigsaw puzzle in front of you....... OT - Has anyone ever done that jigsaw - freaking drove me nuts one Christmas and I sacked it off as impossible (see footnote) Footnote - well without adopting my grandfathers technique for dealing with a the clear blue sky on any jigsaw puzzle - filing the pieces and making them fit (not joking either) Yep,loads of photos when taking something apart is always a good idea Like the idea of a file for jigsaw puzzles  My brother in law was down at the weekend. He got hold of a couple of Rubik's cubes that my son discovered during the house move. One of those annoying people that does a cube in about 30 seconds....until he got to the one that had had the stickers taken off and stuck back on to get it right. That fixed him, |
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May 11, 2016 10:54:16 GMT
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my head is in the same place as b-child. is this using tools to fix another tool to make something to fix the tools to fix the mazda ? |
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May 11, 2016 11:01:11 GMT
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my head is in the same place as b-child. is this using tools to fix another tool to make something to fix the tools to fix the mazda ? I think I understand what you are saying. Me? I need to look at the thread title to remind myself there's a Mazda involved in the first place. Absolutely fascinating so far. |
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Last Edit: May 11, 2016 11:01:49 GMT by georgeb
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, Now you have jogged my memory, I remember a couple of old 30 newdpaper presses that used theseto drive the copy counters. I noticed the slotted screws should have raised a bit more of a question, one thing I will say is running 2 joints like that is "bad pracitce" because it allows the shaft to drop out when wear occurs unless they are spigot mounted, sounds like an excuse to machine a single custom cplg
