Thread: Cold saw build

Hi Tongleh
New slack adjusters are cheap for trailers and american trucks or see your local transport company who do their own repairs they will throw then away regularly.
Rascal
I have thrown heaps of them out over the years and would of never thought to use them for a saw like yours, you got me thinking about the S-cams too thats a lot of shaft that gets binned and we should be able to recycle them.

whitey56
We throw them out too but could easily save them for pickup from Melbourne or Adelaide
John

I have never heard of slack adjusters before so I just did a google on them and I was wondering what wears out on them and why do they need to be replaced and not repaired ?

Also if tongleh was to get one of these off one of you blokes is the splined shaft also readily available ?

john

The thin tin sides wear off or come loose or the lock fails.Shafts are called s cams or camshafts. They are about 1 1/2" diameter and18"long.These are trailer ones but there
are others off trucks with different splines and different lengths which may be more
precisely made.The cam end of the shaft or the bearing area wears.Can save them if anyone wants some.
John

Originally Posted by rascal

whitey56
We throw them out too but could easily save them for pickup from Melbourne or Adelaide
John

Hmm. So it's a worm drive of about 18:1, going by your 80 rpm estimate. I guess you could fine tune that with pulleys on the input side?

Probably the best saw I ever used was at one of my first jobs. School holidays at the old man's work. This thing had a blade that auto fed upwards, and was as smooth and quiet as you like. I remember the blade as not all that big, but with large teeth. May not be a reliable memory though.

I'd put my hand up for one of those gearboxes, but only because I can't resist cool stuff like that. You should give them to guys who are serious about building something first.

Boy would I love a couple of them to play with, I can think of endless possibilities. I also googled them tonight, handy little items I'm thinking.

Originally Posted by Bryan

Hmm. So it's a worm drive of about 18:1, going by your 80 rpm estimate. I guess you could fine tune that with pulleys on the input side?

Hi Bryan,
I checked the ratio at Simons barby and if I remember correctly they are about 27:1.
Well, that's if I remember correctly.

Phil

Originally Posted by Steamwhisperer

Hi Bryan,
I checked the ratio at Simons barby and if I remember correctly they are about 27:1.
Well, that's if I remember correctly.

Phil

That gives 53 rpm. Even better!

I have two different sets
First set has a 10 tooth spline on a 1.5" shaft ratio is 21:1
Second set 28 tooth spline 1.5" shaft ratio is 26:1
As can be seen they come in imperial or metric lengths See photo 2
My intention is to supply Slack adjuster and Camshaft sets to those who would like some.
jhovel and tongleh have already put in their orders.
pm me if you want any.They can be picked up from Derrimut or Regency park or possibly
dropped off between Melbourne and Adelaide
John

Thanks for that Rascal. Either is good for me, if jhovel wants a particular set. I live in Adelaide so Regency Park would be good for me. Just PM me with where and when at your leisure. What a good man you are, thanks agin.

Thanks John for supplying the correct ratio. My memory is beginning to fade. Thanks again for the one you have given me. It will eventually be for rotating the tool on a ball turning device. ...Hopefully.

Phil

John, the adjusters in post #25 you show in the photos look quite different to the one you used on on the coldsaw in post #4.
Are they a different type alltogether or just from different kinds of cams?
Cheers,
Joe

Joe,I only used the worm and wheel out of the slack adjuster. The housing was fabricated from 2 bits of pipe and the ends and
bearings of an ej holden diff.
John

Thanks Rascal, I should be able to pick up tomorow.