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24th July 2014, 11:50 AM #1SENIOR MEMBER
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my new toy. Colchester Chipmaster
i finally got it home . now time for some cleaning and adjusting .
Peter
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24th July 2014 11:50 AM # ADSGoogle Adsense Advertisement
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24th July 2014, 12:52 PM #2
NICE ONE
HEY THATS A BEAUTY . Mine looks like a worn out wreck in comparison . We can compare notes . Is the variable speede device in yours OK
Mike
PS be very careful when moving it , these lathes tip over at the drop of a hat , as I found out the hard way .
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24th July 2014, 01:11 PM #3SENIOR MEMBER
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24th July 2014, 03:30 PM #4
chippy
Hi Peter
There is a MEW magazine article by a chap who VFD his chipmaster .
Also the yahoo Colchester group has some info in their files section . Mike
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24th July 2014, 04:28 PM #5SENIOR MEMBER
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Congratulations, they're nice machines. There are only maybe 3 or 4 lathes in this work envelope I'd trade mine for (and RC has one of them). While I don't like the Kopp variators, if yours works properly, think 3 times before swapping it out. You are *not* going to get the equivalent speed range from a motor with VFD by just varying the motor frequency. Using a VFD to get 3 phase assuming the motor can be set to use 220V is a different matter of course. I'd suggest changing the oil in the variator anyway. Make sure it's the right sort and filled to the correct level. Seems a lot of problems with the variators are due to wrong type or amount of oil. PDW
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24th July 2014, 05:10 PM #6SENIOR MEMBER
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24th July 2014, 07:00 PM #7Senior Member
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- Mar 2012
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- Trundle NSW
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Well done. These seem to be excellent lathes. I was only looking at one 30 mins ago. It is sitting on the back of my truck along with a Nuttall lathe, Pal mill and Arbroga drill. Unfortunately it is not mine. I picked the machines up for a friend who inherited them from his uncle. Luckily though he didn't want the Arbroga ER 825 drill and the Power surface grinder ( which I am still to pick up) so you can guess were they are staying!
Will probably have to help set up the Chipmaster when I delivery it so hopefully will get a chance to have a play then.
Mark
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24th July 2014, 07:13 PM #8GOLD MEMBER
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- Aug 2011
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- Melbourne
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- 2,951
Very nice indeed!
My inlaws have a Colchester bantam in their shed. They are beautiful machines. It never gets used!
SimonGirl, I don't wanna know about your mild-mannered alter ego or anything like that." I mean, you tell me you're, uh, super-mega-ultra-lightning babe? That's all right with me. I'm good. I'm good.
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24th July 2014, 08:46 PM #9
review
A interesting review for you Peter.......... and the manual
The wandering axeman: Colchester Chipmaster Review
http://www.scribd.com/doc/132286866/...-Manual-1-of-6
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24th July 2014, 10:04 PM #10SENIOR MEMBER
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24th July 2014, 11:28 PM #11SENIOR MEMBER
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this might be it for this lathe ?
SAJ 4KW VSD VFD Inverter 415V Variable Speed Drive | eBay
I don't have to connect the motor to 220v . just stick this on and that is it , am i correct ?
Peter
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24th July 2014, 11:51 PM #12GOLD MEMBER
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25th July 2014, 12:05 AM #13SENIOR MEMBER
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25th July 2014, 01:23 AM #14GOLD MEMBER
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1 5KW VSD VFD Inverter Single Phase 240V TO 3 Phase 415V Variable Speed Drive | eBay
Well thats more like it.
Way cheaper than Drives Direct by the look of it(though it was a quick look). I had heard of Chinese 240 to 415V VSDs... from Joe maybe? but I'd not seen one for sale before now.
Stuart
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25th July 2014, 07:42 AM #15Philomath in training
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Yes, but how are you going to get 4kW out of the VFD if you can only put 2.2kW (10A plug) or 3.3 kW (15A plug) into it - and that is not taking into account losses within the VFD. If the Variator works you are better off putting the biggest single phase motor you can drive. While you can use a 4kW VFD you can't get more out of them than you put in and last time I looked (many years ago) the conversion efficiency was something like 80%, so if you are feeding 3.3kW in, you are likely to only see a bit over 2 1/2kW out.
Michael
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