DIY OTTAWA WINTER 2012 - Page 30

pinnocchio · 12th April 2012, 04:38 PM

If any of you would like to go and bring some of your gears but you don't speak French, I'm willing to be some kind of a translator.

I'm sure they would appreciate more members to show up.

Ciao!
Do

bearberry · 8th May 2012, 05:25 PM

Hi everyone,
Hope you are having a good spring and getting lots of builds done!
Two things I wanted to share/ask about.
First, the Catholic school board is apparently selling off their tablesaws, replacing them with Sawstop models. I picked up a Unisaw in good shape, at a good price, this past weekend. It was being sold by a teacher at Louis Riel school, here in Blackburn Hamlet, on behalf of the school. If you are looking for a saw, check with the closest Catholic school that has a shop program.
Second, I plan to get 1 or 2 ODACs. Anyone interested in doing a local group buy? If not I will order through jtkam in Toronto.
Cheers, John

mwmkravchenko · 8th May 2012, 05:58 PM

Good buy if you need one. ( Saw that is)

bearberry · 8th May 2012, 06:02 PM

I have to replace the 3 phase motor and figure out where I'm going to fit the saw, but it was too good a deal to pass up!

mwmkravchenko · 8th May 2012, 06:06 PM

A rotary phase converter is not that hard to cobble together.

SINGLE to 3 PHASE CONVERTER

mwmkravchenko · 8th May 2012, 06:14 PM

Or you could buy it:

Teco FM50 3.0hp Drive Phase Converter Single to 3 Phase items in JTE INDUSTRIAL store on eBay!

Wholesale NEW 3HP 2200 watt 2.2KW Power 10A VARIABLE FREQUENCY DRIVE INVERTER VFD for Spindle Motor Speed Control Free

opc · 8th May 2012, 06:23 PM

I'm with Mark on this one... keep the three phase motor and get a 3-phase converter!

It's cheaper than a new motor, and will perform better in the long run, especially if you power it from 230V. Some offer full speed control and soft start, both of which are great to have on a table saw.

Cheers,
Owen

mwmkravchenko · 8th May 2012, 06:29 PM

yep a three phase motor is under power 1/3 longer per revolution that a standard two phase motor. That is why they seem stronger.

Plus the converters that are available let you vary the frequency as well, you can easily slow down the motor, and to a degree speed up the motor. The speed up part becomes a little dicey when you take into consideration you end up with losses in the windings due to inductance. These losses end up "lost" as excess heat. Not the friend of motors.

But the soft start is way cool!

bearberry · 8th May 2012, 07:24 PM

Thanks, guys. Time to do some research.
John

bearberry · 18th September 2012, 01:57 AM

Anyone interested in showing off what they have built?
Mini-Maker Faire Ottawa | 2012

Even if you don't want to exhibit anything, it should be an interesting day!
John

12th April 2012, 04:38 PM	#291
pinnocchio Just DIY! diyAudio Member Join Date: Sep 2010 Location: Montreal	If any of you would like to go and bring some of your gears but you don't speak French, I'm willing to be some kind of a translator. I'm sure they would appreciate more members to show up. Ciao! Do __________________ PREAMPs : AMB α10 + JC-80 clone \| Balanced DCB1 \| AMPs: AMB β24 \| Aleph 5 \| Symef \| Hiraga \| ML-2 \| Fetzilla \| Telos 390 Clone DACs : TPA Buffalo II + NTD1 I/V \| TPA OPUS + IVY III Speakers : Jim Holtz Statements \| Astasia SD \| Tubasson Mark 2

8th May 2012, 05:58 PM	#293
mwmkravchenko Mark Kravchenko --- www.kravchenko-audio.com diyAudio Member Join Date: Jan 2002 Location: Perth Canada	Good buy if you need one. ( Saw that is) __________________ Mark

8th May 2012, 06:06 PM	#295
mwmkravchenko Mark Kravchenko --- www.kravchenko-audio.com diyAudio Member Join Date: Jan 2002 Location: Perth Canada	A rotary phase converter is not that hard to cobble together. SINGLE to 3 PHASE CONVERTER __________________ Mark

8th May 2012, 06:14 PM	#296
mwmkravchenko Mark Kravchenko --- www.kravchenko-audio.com diyAudio Member Join Date: Jan 2002 Location: Perth Canada	Or you could buy it: Teco FM50 3.0hp Drive Phase Converter Single to 3 Phase items in JTE INDUSTRIAL store on eBay! Wholesale NEW 3HP 2200 watt 2.2KW Power 10A VARIABLE FREQUENCY DRIVE INVERTER VFD for Spindle Motor Speed Control Free __________________ Mark

8th May 2012, 06:29 PM	#298
mwmkravchenko Mark Kravchenko --- www.kravchenko-audio.com diyAudio Member Join Date: Jan 2002 Location: Perth Canada	yep a three phase motor is under power 1/3 longer per revolution that a standard two phase motor. That is why they seem stronger. Plus the converters that are available let you vary the frequency as well, you can easily slow down the motor, and to a degree speed up the motor. The speed up part becomes a little dicey when you take into consideration you end up with losses in the windings due to inductance. These losses end up "lost" as excess heat. Not the friend of motors. But the soft start is way cool! __________________ Mark


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8th May 2012, 05:25 PM	#292
bearberry diyAudio Member Join Date: Jul 2007 Location: Ottawa	Hi everyone, Hope you are having a good spring and getting lots of builds done! Two things I wanted to share/ask about. First, the Catholic school board is apparently selling off their tablesaws, replacing them with Sawstop models. I picked up a Unisaw in good shape, at a good price, this past weekend. It was being sold by a teacher at Louis Riel school, here in Blackburn Hamlet, on behalf of the school. If you are looking for a saw, check with the closest Catholic school that has a shop program. Second, I plan to get 1 or 2 ODACs. Anyone interested in doing a local group buy? If not I will order through jtkam in Toronto. Cheers, John

8th May 2012, 06:02 PM	#294
bearberry diyAudio Member Join Date: Jul 2007 Location: Ottawa	I have to replace the 3 phase motor and figure out where I'm going to fit the saw, but it was too good a deal to pass up!

8th May 2012, 06:23 PM	#297
opc diyAudio Member Join Date: Oct 2004 Location: Ottawa, Ontario, Canada	I'm with Mark on this one... keep the three phase motor and get a 3-phase converter! It's cheaper than a new motor, and will perform better in the long run, especially if you power it from 230V. Some offer full speed control and soft start, both of which are great to have on a table saw. Cheers, Owen

8th May 2012, 07:24 PM	#299
bearberry diyAudio Member Join Date: Jul 2007 Location: Ottawa	Thanks, guys. Time to do some research. John

18th September 2012, 01:57 AM	#300
bearberry diyAudio Member Join Date: Jul 2007 Location: Ottawa	Upcoming Ottawa Mini Maker Faire Anyone interested in showing off what they have built? Mini-Maker Faire Ottawa \| 2012 Even if you don't want to exhibit anything, it should be an interesting day! John

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