Wanted to Buy Machinist to turn up bushes & bits n peices ?

I`m looking for a machinist who can turn bushes or pins and do small milling and knurling jobs etc. maybe a retired toolmaker or someone who can work to close tolerances.
Can anyone recommend anyone from personal experience?

 

suspension smith may be able he has all the fun tools we all want his ad is at the top

 

edit the ads arent up the top anymore he is a sponser so hes details will be around someware

 

His number is 0407 903 652

 

There is a guy who advertises on all classifieds any machining turning work at cheap rates.
I have not used him but here is his details.
Vinko
0411239847
62553269
I believe he is on the north side.

 

Thanks guys,
I`ve got a few little jobs coming up like making up bushes for a set of starter rollers, got most of the bits, once I pick up some rollers and bearings I`ll give em a call, cheers

 

bushes for starter rollers ? You need big old caged bearings mate - bushes won't cut the mustard if you are starting anything bigger than a 250 ?

 

Thanks Gos- the bushes are actually for the 2 sprockets I have for the chain drive - 240v elec motor to roller. to support the 2 roller spindles I`ve found some self centering bearings in my extensive and well cataloged stock- well, my recently relocated jumble of stuff, but so far haven`t found the cages for the bearings .Planning to put effort into the rollers and dummy the rest up out of mild steel. Once I get it working OK I`ll have a go at making it up out of alloy.
The other job I wanted the machinist for, was knurling the rollers.

 

aah OK. I got some bearing supports from CBC in Fyshwick for my starter rollers. For the actual rollers - I used rubber boat rollers, 300mm wide, with a 1" rod through the guts. These work well, as they are a 'taper' to the centre, so the wheel always centres itself.

I do have to change the motor though, tried a 1/2 hp lathe motor, but it just doesn't have the grunt. The good 240v starters these days, use 9" grinders for the motor - these are pretty easy to modify for chain-drive to the starter rollers....

 

mmmmm.....got me thinking now, had heard about the boat roller trick, sounds like the go, the motor I have is a Crompton Parkinson 1/2 hp but it`s compressor duty type big old bugger, about 200mm diameter 1440 rpm and my sprocket on the motor end 20 tooth and 32 on the roller end. After your comments maybe I ought to just tack it all up and give it a go to see if it`s got enough grunt. If not then will have to pick up an el cheapo grinder like most of the other guys use.
just checked and the id of the existing sprockets is 1" so looks good for your boat roller idea!

 

the boat rollers are way good - and if your existing sprockets have a 1" diameter already, then its a no-brainer

the compressor motor might have enough grunt, my old lathe motor is a bit smaller, like washing-machine motor size. It ran at about 1600rpm I think ?? Gearing up a bit will help, but you tend to loose torque when you spin up the rollers quicker. If you can tack it all together first and try it out, that would be ideal....

The 9" grinder motors generally use a 1:1 gearing, so they loose *nil* torque, but they spin up at about 5,500rpm, and this is ideal for starting a bike....

 

Aaaah I thought that I`d have to gear the motor speed down from 1440, but you reckon that I ought to be stepping it up?
So 32 divided by 20 = 1.6 x 1440 = 2304 rpm and bumping it in 2nd or 3rd ought to get me enough revs to get the wee beasty going. What do you think Gos, does this sound viable to you? It`d be nice to have enough grunt to get bigger bikes started as well.

 

You need the rollers spinning at least at 3000rpm to get enough grunt into the gearbox to kick a bike over.......and that is in 2nd gear. If you try it in 3rd, the torque 'pushback' from the gearbox will just see the roller motor burn out quickly....

what sort of bike will you be starting on these rollers ? If its a little stinkwheels without too much compression, then you may have no problems with the electric motor and those revs you have listed.....what we found with my starters, that the gearing I used - I think it was about 16:30 or thereabouts - spun up the rollers quick enough, but there was no *grunt* once the clutch lever on the bike was released - it was turning over the back wheel, but nowhere near quickly enough to get the motor cranked and running within a second or 2.

You need the torque, but at much higher revs - for bike starter rollers. I think this is why most punters are using the 9" grinders, as these pump out maximum grunt at their designated rpm - and at 1:1 gearing, that rpm is perfect for starting a bike in 2nd gear.

 

hmmmmm... again.....building it to start the 150 4 stroke Honda XL/XR Superlite, which is a real bitch to roll start from cold , even with choke and the right technique. The H100 2 stroke I still have will bump easily in first or 2nd no worries. The 4 stroke I can`t start from up on the stand like some guys do by reefing the wheel around, also heard of a few stuffed shoulders from that style! It`s looking like the grinder chain driven to roller, seeing I`ve only got those 2 rollers that I may as well buy another so I can power both rollers.