Antique Engines and Old Iron
[Home] - [HELP] - [Forums] - [Library] - [Photo Gallery] - [Groups] - [Classified Ads] - [Subscribe] - [Links] - [Books] - [Sponsors] -

Go Back   SmokStak > SmokStak® General Discussion > Smokstak Down Under
Forgot Password? Join Us!

Notices

Smokstak Down Under For Australia and New Zealand Smokstakers to meet, greet, yabber and yack.

Smokstak Down Under

Southern Cross MKJ


this thread has 11 replies and has been viewed 1097 times

Reply
 
Thread Tools Display Modes
  #1  
Old 10-16-2017, 11:57:42 AM
gcm gcm is offline
Registered
 
Join Date: Apr 2016
Location: Pretoria, South Africa
Posts: 40
Thanks: 1
Thanked 39 Times in 12 Posts
Default Southern Cross MKJ

I am in process of restoring a 1949 Farm Pumper. I am missing a magneto and nowhere can I find the Type & Model on the web.
I have now decided to modify another magneto for the time being, but to do that I need to cut a new gear to fit on the Pumper crank.
I saw some guys mention a 16teeth but the gear on my crank is only a 14 teeth. Does anybody maybe know the exact sizes for the gear because I would like to import the correct involute gear cutters to cut a new gear. Here in South Africa is only metric cutters freely available. Sorry I am lazy and should sit and calculate it but I am sure it is faster to ask and hopefully not necessary to reinvent the wheel.
Reply With Quote
Sponsored Links
  #2  
Old 10-16-2017, 05:49:55 PM
Scotty 2 Scotty 2 is offline
Registered-III
 
Join Date: Mar 2011
Location: Warwick, Queensland, Australia
Posts: 2,802
Thanks: 1,842
Thanked 2,139 Times in 1,137 Posts
Default Re: Southern Cross mkj

Hello all
Crikey. The J I'm playing with at the moment has 26 teeth on the crankshaft for the magneto drive and 24 teeth for the timing gears.

Cheers Scott
Reply With Quote
  #3  
Old 10-16-2017, 05:53:25 PM
Famous Fitter Famous Fitter is offline
Registered-I
 
Join Date: Jun 2014
Location: Brisbane, Queensland, Australia
Posts: 112
Thanks: 276
Thanked 90 Times in 63 Posts
Default Re: Southern Cross mkj

HI gcm,

Good to hear you are restoring a good old Pumper. I'm guessing that it should have a Lucas Magneto. Pretty sure The Gear is 26 teeth and there is a brass sealing plate that sits between the gear and magneto with a felt seal in it. the gear has a small boss on it for the seal.

I can work out what DP the gear is and the dimensions to make one, I have one (Southern cross gear) somewhere up in the mess i call a shed, I have a few Farm Pumpers of Various makes and lots of bits and pieces.

I'll ask around in case someone has the parts laying around

I live only 150KM from Toowoomba where your engine is made !!!!

Cheers Justin.

P.S. There is an excellent book on the history of Southern Cross Products called "Southern Cross Engines". A search should find it online.
Reply With Quote
The Following 2 Users Say Thank You to Famous Fitter For This Post:
  #4  
Old 10-17-2017, 01:58:52 AM
cobbadog cobbadog is offline
Registered-III
 
Join Date: Aug 2009
Location: Coopernook. N.S.W. Australia
Posts: 1,731
Thanks: 3,151
Thanked 758 Times in 521 Posts
Default Re: Southern Cross mkj

Maybe by sending a PM to Rob.S here on this Forum as he just might have a gear ready to dispatch. Last time I was on his property he had a 5 acre paddock of cast iron growing everywhere.
Reply With Quote
  #5  
Old 10-17-2017, 03:42:09 AM
gcm gcm is offline
Registered
 
Join Date: Apr 2016
Location: Pretoria, South Africa
Posts: 40
Thanks: 1
Thanked 39 Times in 12 Posts
Default Re: Southern Cross mkj

Thank you for the replies. I must apologize, I have counted the teeth on the wrong gear Counted the teeth when the crank was outside on the table.
It is indeed a 26 teeth. What confuse me now is that "Scotty 2" says the magneto is a 24teeth and I would have thought it should be a 1:1 ratio to spark at the correct position.
So much to learn ;-) which makes me think - maybe I should search harder to find the correct magneto. Less frustration in the long run and also nicer to have the real thing for a restoration.
Reply With Quote
  #6  
Old 10-17-2017, 05:52:20 PM
Scotty 2 Scotty 2 is offline
Registered-III
 
Join Date: Mar 2011
Location: Warwick, Queensland, Australia
Posts: 2,802
Thanks: 1,842
Thanked 2,139 Times in 1,137 Posts
Default Re: Southern Cross MKJ

Hello all
I received some information that may be of interest yesterday.
I did not know this but there were some Southern Cross engines made in South Africa.
I think you may have misread my post GC. Both Justin and I said the number of teeth on the gear on the crank to drive the magneto is 26 teeth. There are 24 teeth on the gear on the crank to drive the timing gear not the magneto.
What is the serial number of your J GC? It may help to identify if your pumper is Australian made or South African made.
I was also sent this list. A list of magneto's that were used on Southern Cross engines.

Cheers Scott
Attached Files
File Type: pdf Southern Cross Magnetos 1.pdf (131.6 KB, 46 views)
Reply With Quote
  #7  
Old 10-17-2017, 07:23:46 PM
Winchester Winchester is offline
Registered-II
 
Join Date: May 2015
Location: Albany, Western Australia
Posts: 956
Thanks: 160
Thanked 442 Times in 244 Posts
Default Re: Southern Cross MKJ

Yes well when Uncle Herb ,whom I have mentioned in posts previously ,bought his SC Pumper in 1940 it was fitted with the magneto as shown.It is a 26 tooth pinion
Attached Thumbnails
Click image for larger version

Name:	DSC03096.jpg
Views:	41
Size:	138.7 KB
ID:	293868  
Reply With Quote
  #8  
Old 10-17-2017, 07:28:03 PM
Winchester Winchester is offline
Registered-II
 
Join Date: May 2015
Location: Albany, Western Australia
Posts: 956
Thanks: 160
Thanked 442 Times in 244 Posts
Default Re: Southern Cross MKJ

Sorry for that error ...................Uncle Herb's magneto.
Attached Thumbnails
Click image for larger version

Name:	DSC03674.jpg
Views:	66
Size:	79.9 KB
ID:	293869  
Reply With Quote
  #9  
Old 10-18-2017, 01:13:31 AM
cobbadog cobbadog is offline
Registered-III
 
Join Date: Aug 2009
Location: Coopernook. N.S.W. Australia
Posts: 1,731
Thanks: 3,151
Thanked 758 Times in 521 Posts
Default Re: Southern Cross MKJ

This is the Lucas Maggy on our Buzacott Farm Pumper. I get them back to front, it is either a RS1 or a SR1 but lean towards the RS1.
Attached Thumbnails
Click image for larger version

Name:	0627091011-01.jpg
Views:	33
Size:	68.9 KB
ID:	293899  

Last edited by cobbadog; 10-18-2017 at 01:15:29 AM. Reason: add a pic
Reply With Quote
  #10  
Old 10-18-2017, 03:02:28 AM
gcm gcm is offline
Registered
 
Join Date: Apr 2016
Location: Pretoria, South Africa
Posts: 40
Thanks: 1
Thanked 39 Times in 12 Posts
Default Re: Southern Cross MKJ

Good Morning,
Again thank you very much for the feedback and I apologize for the misunderstanding. I am quite new in this "hobby" and have lots and lots to learn.
Her serial number is 34864 and my guess is somewhere in 1949.
Attached is a pic what she looked like when she came to me, missing the magneto, oiler broken off (missing) and some spares in a plastic bag. My theory is that the magneto broke and was removed but never repaired. The white metal bearings and gears show very limited wear. It looks as if she must have fallen over at some stage because the carb has broken off in the head. The piston was stuck but after 2 weeks in the molasses all rust was removed and piston removed. Even the piston rings have enough spring in them to have another go at live.
Second pic is my work in progress. I tried to get the color mixed correctly but it was quite an exercise to explain to the guy what the old Australian Railway Cart's color looked like
Attached Thumbnails
Click image for larger version

Name:	20170527_083107.jpg
Views:	57
Size:	57.8 KB
ID:	293901   Click image for larger version

Name:	20171004_170858.jpg
Views:	58
Size:	51.2 KB
ID:	293902  
Reply With Quote
The Following 2 Users Say Thank You to gcm For This Post:
  #11  
Old 10-18-2017, 05:59:51 PM
Scotty 2 Scotty 2 is offline
Registered-III
 
Join Date: Mar 2011
Location: Warwick, Queensland, Australia
Posts: 2,802
Thanks: 1,842
Thanked 2,139 Times in 1,137 Posts
Default Re: Southern Cross MKJ

Hello GC.
No need to apologise matey. I'm still learning so much, after only been in the hobby a couple of years, it's not funny. Most people are just wanting to help and I thank them for it..
It looks as though your engine is in great shape. A big help if things are on good condition.
It does appear your engine is an Australian made on as it's bang in the middle of known engines in the registry. I believe Southern Cross made engines in batches and your engines appears to be in one of those batches.
We're working on a 1953 model of the J and I can see some differences to yours. We have a different crankcase for starters.

Cheers Scott


Last edited by Scotty 2; 10-18-2017 at 06:14:53 PM.
Reply With Quote
  #12  
Old 10-18-2017, 06:20:04 PM
cobbadog cobbadog is offline
Registered-III
 
Join Date: Aug 2009
Location: Coopernook. N.S.W. Australia
Posts: 1,731
Thanks: 3,151
Thanked 758 Times in 521 Posts
Default Re: Southern Cross MKJ

The 2 common "REDS" used in Australia were Post Office Red and Dog D**k Red
Reply With Quote
Reply

Bookmarks


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

F o r u m Jump

Similar Threads Chosen at Random
Thread Thread Starter F o r u m Replies Last Post
Southern Cross AKB 3 JeffR Smokstak Down Under 39 03-29-2017 09:03:37 AM
Southern Cross Rob.S Smokstak Down Under 6 06-30-2015 07:02:34 PM
Southern Cross Rusty Engines Smokstak Down Under 0 04-21-2014 04:43:46 AM
Southern Cross AXC choofer Smokstak Down Under 0 11-25-2009 06:28:07 AM
Southern Cross engines Rob Laurent Antique Engine Archives 1 03-24-2002 07:02:58 PM


Use "Ctrl" mouse wheel to change screen size.
All times are GMT -4. The time now is 10:58:21 PM.

Smokstak and Enginads site search!


All use is subject to our TERMS OF SERVICE
SMOKSTAK® is a Registered Trade Mark - A Community of Antique Engine Enthusiasts
Copyright © 2000 - 2019 by Harry Matthews P.O. Box 5612 - Sarasota, FL 34277