Thread indexing on Luger Barrels Question

sheepherder · 06-22-2012, 12:50 PM

Back in the 80's, I had a 1959 Austin-Healey 100/6 that I decided to put a Datsun 240Z drivetrain in...Worked out pretty good...I further decided to change it over to right-hand steering...All the mounting points were already there; I just had to move the steering gearbox over to the right side of the frame...Not too hard...Everything worked out very well...Until I backed out of the driveway and almost took the corner off my house...

It did not use rack & pinion; it used a steering gearbox with a screw arrangement...When I shifted it to the other side, and flopped all the links, it now counter-steered (car went left if you steered right & vice versa)...

I took the steering box apart and figured out that if I had a new left-hand thread 'screw' cut, I could get it to proper steer...That's when I found a machine shop with the screw-threading machine...The foreman was interested in the job, and offered to do it at a reasonable cost...If I provided the steel stock [4140] and the specially ground mill cutter...The cutter was what I couldn't afford...

I ended up grafting a Triumph TR250 rack & pinion in the front (right-hand drive again), and put the TR250 front brakes & front suspension in as well...

...It's a slow Friday...

06-22-2012, 12:50 PM	#14
sheepherder Lifer Lifetime Forum Patron Join Date: Feb 2009 Location: ...on the 'ol Erie Canal... Posts: 8,197 Thanks: 1,416 Thanked 4,462 Times in 2,336 Posts	Back in the 80's, I had a 1959 Austin-Healey 100/6 that I decided to put a Datsun 240Z drivetrain in...Worked out pretty good...I further decided to change it over to right-hand steering...All the mounting points were already there; I just had to move the steering gearbox over to the right side of the frame...Not too hard...Everything worked out very well...Until I backed out of the driveway and almost took the corner off my house... It did not use rack & pinion; it used a steering gearbox with a screw arrangement...When I shifted it to the other side, and flopped all the links, it now counter-steered (car went left if you steered right & vice versa)... I took the steering box apart and figured out that if I had a new left-hand thread 'screw' cut, I could get it to proper steer...That's when I found a machine shop with the screw-threading machine...The foreman was interested in the job, and offered to do it at a reasonable cost...If I provided the steel stock [4140] and the specially ground mill cutter...The cutter was what I couldn't afford... I ended up grafting a Triumph TR250 rack & pinion in the front (right-hand drive again), and put the TR250 front brakes & front suspension in as well... ...It's a slow Friday... __________________ I like my coffee the way I like my women... ...Cold and bitter...