Drilled rotors

[81xsproject]

I am sure most folks have seen this guys rotors on ebay, but I like the combo of the slots and the holes. I am going to do something like this on my bike. I will be doing more holes, though.
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[DiverRay]

That looks as if he took a "newer" rotor, and drilled it. If you have a mill with an index table, you probably could put in any slot size you want.

[Geezer]

I have a nice drill press I use in my business and I've been thinking about doing this for more than a couple years. My concern is getting the pattern right. With the aluminum I work with every day, if I screw up a piece, I toss it in the scrap bucket at a 60 cent loss. I'd hate too screw up my only full set of spare rotors.

I'd be happy to pay someone for a full size print of the pastern so that I didn't have to spend the time figuring it out for myself.

Geezer

[b.walker5]

Out of curiosity, what is your line of work? Around here none of the machine shops (even the big aircraft unionized shops) have apprentices. You can either do the job or not. The electrician's and mason's unions have apprenticeship programs, but I have never heard of a machinist's apprentice. Well, I did, but that was at a shop that fired a guy with 30 years experience because "they could hire a kid out of high school for 1/3 what they paid him". Their "apprenticeship program" was an excuse for not paying market value for work that equals market standard.

The electricians and masons actually get paid a fair wage for what they do, unlike we machinists in non union shops.

TBH, I would rather guys building my home have some great training. Hard to drag a mic across a house to see if it is scrap. You don't have to train a CNC machine, but I think not on building a house.

I have two trades. I'm an electrician and refrigeration engineer, that can weld, turn and fabricate etc, and I work for a heating company that has an engineering, sheetmetal and an air conditioning division. I manage the AC division but have my tools on most of the time and often have to make things myself. We currently have three apprentices, 1 is mine in the electrical trade, in his second year, and 2 in Sheetmetal / HVAC.

They get paid on a sliding scale of percentages of a tradesmens wage depending on what year they're in. 1st year is 60%, 2nd year 75% and third year is 100%. Most apprenticeships are now 6000 hours / 3 years, instead of 8000 / 4 when I done mine, but in reality a good apprentice with a will to work can have his time done in a little over two years, and the trade cert exam can be done anytime.

Our pay rates arent too bad, with 2 trades, 30+ years experience, and a management role I get 60k a year and a newly crowned tradesman in most trades can expect around 35 to 45k, but the problem we have is that Australia pays around 20% higher and our young folk tend to take off over there the moment they're out of thier time. As a result many employers are importing skills from overseas. Mostly Asians and Indians/Sri Lankans who will work 16 hours for a bowl of rice a day and arent trained anywhere near the required standards. We've been lobbying the govt for years to address this and provide incentives to keep them here but it seems to fall on deaf ears.

For ten years no one trained any apprentices at all because all we were doing was contributing to Australia's and Englands economy, but in recent years we've suffered as we get older with no young blood to fill the gaps exposed by an ageing and retiring workforce.

[b.walker5]

I have a nice drill press I use in my business and I've been thinking about doing this for more than a couple years. My concern is getting the pattern right. With the aluminum I work with every day, if I screw up a piece, I toss it in the scrap bucket at a 60 cent loss. I'd hate too screw up my only full set of spare rotors.

I'd be happy to pay someone for a full size print of the pastern so that I didn't have to spend the time figuring it out for myself.

Geezer

PM me your email and I'll send you the patterns I have. There's 3 different styles and all will (should) print part patterns on A4 that can be taped together to prodice a full size working pattern.

[Geezer]

PM me your email and I'll send you the patterns I have. There's 3 different styles and all will (should) print part patterns on A4 that can be taped together to prodice a full size working pattern.

My common personal eMail address is technojock(at)yahoo.com **REPLACE (at) with @ ofc...editted to prevent spam bots**

would I be able to print these on a lazerjet and have them come out the right size?

Geezer

[Crazcnuk]

Finally got some pictures of mine and Derwat's rotors.





These are on Derwat's, if you notice each side go the opposite way. Mine on my standard both swirl the same direction (all 3 atually).