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Damo

az supporter
Joined: Sat Jul 22, 2006 11:30 pm Posts: 4661 Location: Brisbane
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 Posted: Mon Oct 05, 2009 2:51 am |
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While I had the shaft in the lathe I hadn't noticed that the OTHER end had some runout, well, not til tonight.
So I chucked it up like this and measured 1.2mm runout. Is that bad? Would that cause the disc on the other end of the shaft to wobble like I saw?

_________________ SJ50.4.LYF
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ball

I live here!
Joined: Wed Oct 22, 2008 10:30 pm Posts: 4673 Location: Katherine
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 Posted: Mon Oct 05, 2009 2:56 am |
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You need to put a machined section in the chuck. The unmachined part of the axle won't be concentric to the machined ends.
If the lathe is long enough put the flange in the chuck and the other end in a dead centre in the tailstock and check again.
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Damo

az supporter
Joined: Sat Jul 22, 2006 11:30 pm Posts: 4661 Location: Brisbane
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 Posted: Mon Oct 05, 2009 2:58 am |
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ball wrote: You need to put a machined section in the chuck. The unmachined part of the axle won't be concentric to the machined ends.
If the lathe is long enough put the flange in the chuck and the other end in a dead centre in the tailstock and check again.
Dang it, i was afraid of that.
The lathe is long enough  I just need to get myself a 3MT dead centre!!!
_________________ SJ50.4.LYF
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Damo

az supporter
Joined: Sat Jul 22, 2006 11:30 pm Posts: 4661 Location: Brisbane
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 Posted: Sun Oct 18, 2009 2:20 am |
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Checked the shaft and it was all OK.
That was a couple of weeks ago, I figured that it was just the assembly that was the problem and that if I just put it all back together it would be fine. So today I did that and low and behold it was all OK
I did get the other side done too so i'll have to get some fluid and bleed them up. Oh, and put the handbrake cable in.
Progress! Yay!

_________________ SJ50.4.LYF
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Scrawny

I live here!
Joined: Tue Jan 29, 2008 10:30 pm Posts: 10528 Location: Brissie
Vehicle: Popemobile
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 Posted: Sun Oct 18, 2009 12:24 pm |
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Hey, it's in the shed too! Where's the pics of the new wheels on?
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steak_knife

az supporter
Joined: Fri May 22, 2009 11:30 pm Posts: 21335 Location: Smart Ass Island
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 Posted: Sun Oct 18, 2009 2:51 pm |
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ScrawnC wrote: Hey, it's in the shed too! Where's the pics of the new wheels on?
Concrete? you bastard! 
_________________ I used to be indecisive,
now I'm not so sure.....
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Damo

az supporter
Joined: Sat Jul 22, 2006 11:30 pm Posts: 4661 Location: Brisbane
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 Posted: Sun Oct 18, 2009 4:58 pm |
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ScrawnC wrote: Hey, it's in the shed too! Where's the pics of the new wheels on?
Kinda hard to get a shot when it's in the shed, i'll see what I can do!
_________________ SJ50.4.LYF
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Damo

az supporter
Joined: Sat Jul 22, 2006 11:30 pm Posts: 4661 Location: Brisbane
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 Posted: Mon Oct 19, 2009 2:31 am |
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This isn't strictly to do with the axle itself but it's pretty closely related so I thought i'd chuck it in here.
Rear shocks. I got a set of Commo SEDAN rears, which are quite a bit longer than wagon rears, for bugger all. I knew previously that the bush end is too small for the zook but only got to having another look at them today.
Since I didn't have any other shock and I really don't want to buy anything more to get this POS back on the road just at the moment I decided to make them work. Here are the commo shocks next to stock zook fronts, just to show the difference between the bush sizes.
I lopped the ends off the stock zook fronts...
And welded the bastards to the commo shocks!
At first I was a bit touch and go whether I should since the shocks are under pressuer, but once I started welding I totally forgot about that fact and luckily remembered before I put a weld around the whole way. I did it in steps a bit at a time so as not to heat up the shock too much. I also wussed out a bit and didn't have the welder cranked as much as I usually would. I think I should have had it up a bit more. In any case I doubt they are going to break.
The only thing I am concerned about now is the shock angle. I hope it's not layed over too much. Time will tell!

_________________ SJ50.4.LYF
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Pubic

az supporter
Joined: Sat Feb 23, 2008 10:30 pm Posts: 1303
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 Posted: Mon Oct 19, 2009 3:56 pm |
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you're keen welding shocks mate!
hopefully they hold....
_________________ Web wheeler extroadinaire
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tanshi

az supporter
Joined: Tue Jan 09, 2007 10:30 pm Posts: 7717 Location: Brisbane
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 Posted: Mon Oct 19, 2009 4:10 pm |
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im sure they will be fine. though they look a little short for the back?
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steak_knife

az supporter
Joined: Fri May 22, 2009 11:30 pm Posts: 21335 Location: Smart Ass Island
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 Posted: Mon Oct 19, 2009 11:16 pm |
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All that was to show off ya wheel`s in the back ground, Yes? 
_________________ I used to be indecisive,
now I'm not so sure.....
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Damo

az supporter
Joined: Sat Jul 22, 2006 11:30 pm Posts: 4661 Location: Brisbane
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 Posted: Tue Oct 20, 2009 1:08 am |
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tanshi wrote: im sure they will be fine. though they look a little short for the back? They're actually pretty long, about 11" travel from memory. I doubt my springs will get anywhere close to that steknig wrote: All that was to show off ya wheel`s in the back ground, Yes? 
Nah I was trying to show off the lathe behind the wheels. Oh, and the milk crate 
_________________ SJ50.4.LYF
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steak_knife

az supporter
Joined: Fri May 22, 2009 11:30 pm Posts: 21335 Location: Smart Ass Island
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 Posted: Tue Oct 20, 2009 1:10 am |
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So I can have ya wheel`s then? 
_________________ I used to be indecisive,
now I'm not so sure.....
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Damo

az supporter
Joined: Sat Jul 22, 2006 11:30 pm Posts: 4661 Location: Brisbane
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 Posted: Tue Oct 20, 2009 1:13 am |
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Geez at least let me drive on em first! 
_________________ SJ50.4.LYF
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steak_knife

az supporter
Joined: Fri May 22, 2009 11:30 pm Posts: 21335 Location: Smart Ass Island
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 Posted: Tue Oct 20, 2009 1:21 am |
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Damo wrote: Geez at least let me drive on em first! 
Ok, but don`t wear them out!!! 
_________________ I used to be indecisive,
now I'm not so sure.....
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Damo

az supporter
Joined: Sat Jul 22, 2006 11:30 pm Posts: 4661 Location: Brisbane
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 Posted: Tue Oct 20, 2009 10:45 am |
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steknig wrote: Damo wrote: Geez at least let me drive on em first!  Ok, but don`t wear them out!!! 
At the rate i'm going? Not likely!
_________________ SJ50.4.LYF
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paulv
Joined: Mon Jun 01, 2009 11:30 pm Posts: 331 Location: Adelaide
Vehicle: SJ80
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 Posted: Thu Mar 04, 2010 2:45 pm |
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How did this whole project pan out? all ok?
Happy with the rear disk brake setup?
Anything you would do different if you had a do over?
Am keen to begin the rear disk brake conversion for my coily.
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BlueSuzy

az supporter
Joined: Sun May 04, 2008 11:30 pm Posts: 9716 Location: NSW
Vehicle: SJ51 LWB, SJ70 SWB
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 Posted: Thu Mar 04, 2010 2:51 pm |
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I wouldnt be surprised if he is still building it 
_________________ BlueSuzy wrote: I'm over the G16b's.
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Damo

az supporter
Joined: Sat Jul 22, 2006 11:30 pm Posts: 4661 Location: Brisbane
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 Posted: Thu Mar 04, 2010 5:17 pm |
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I've been driving on it for a couple of months now.
No major issues except that the caliper mounts place the caliper out too far from the tube. This causes the brake pads to sit over the edge of the rotor and I think this is causing the fucking annoying pad squeak that I have.
The only other complaint I have is the dimshits that made my handbrake cable made it too long so the adjustment needs to be done right up to get it to work, which shits me because there is now no adjustment for when it stretches over time.
EDIT: I should have added in, when looking at doing this consider how you're going to do the handbrake. Having the brakes on the caliper is handy but you really need consider where your cables are going to go and if you need to get something made up. I went to considerable trouble and expense to get a hybrid cable made that uses part zook and part skyline. It works well, but there are probably cheaper and easier ways of doing it.
_________________ SJ50.4.LYF
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steak_knife

az supporter
Joined: Fri May 22, 2009 11:30 pm Posts: 21335 Location: Smart Ass Island
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 Posted: Thu Mar 04, 2010 11:05 pm |
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Damo wrote: EDIT: I should have added in, when looking at doing this consider how you're going to do the handbrake. Having the brakes on the caliper is handy but you really need consider where your cables are going to go and if you need to get something made up. I went to considerable trouble and expense to get a hybrid cable made that uses part zook and part skyline. It works well, but there are probably cheaper and easier ways of doing it.
N/t hand brake!!!! 
_________________ I used to be indecisive,
now I'm not so sure.....
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paulv
Joined: Mon Jun 01, 2009 11:30 pm Posts: 331 Location: Adelaide
Vehicle: SJ80
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 Posted: Fri Mar 05, 2010 2:39 am |
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Right. interesting.
Ok, so I will have to have a think about the handbrake cable bit.
Did you buy the skyline cable when you purchased the calipers, then try and marry it with the existing sierra cable? or you got an all new custom job from a cable making joint?
I don't suppose much can be done about the caliper positioning without redesigning the caliper mounts. I assume the pads are only positioned a few millimeteres over the outside edge of the rotor?
My coily has some sort of factory proportioning valve. Did you end up doing anything in the way of a proportioning valve - or just plumb straight throught to the master cylinder?
I have PM'ed Joe - hopefully he has a spare caliper mounting kit kicking around.
Paul
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