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Son`s mini lathe Clarke CL300

He can break it help please..

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Mark Cookson15/07/2020 13:28:40
11 forum posts
9 photos

Hi, we bought this lathe for my son to learn on and make parts for his race bike. But he wants to learn the hard way, he has broke it three times upto now ! The latest is he took the control box of to fix `number 2 I have broke it` then two wires came of in the control box, put them back in the wrong place then puff a diod or something like it has gone by bye in the mother board black soot to be found. Is this reparable or find a new one please. Thank you for your time.. P.S Why me, he breaks everything at the moment...

Mark Cookson15/07/2020 13:55:31
11 forum posts
9 photos

clarke cl300 mother board 4.jpgclarke cl300 mother board 3.jpgclarke cl300 mother board 2.jpgclarke cl300 mother board 1.jpg

larry phelan 115/07/2020 20:14:36
769 forum posts
14 photos

Perhaps it might be cheaper to just leave the bike in for repair to your local shop.

Sounds like he is not really into lathe work just yet.

Steviegtr15/07/2020 20:26:10
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1266 forum posts
119 photos

Well the orange disc is a capacitor. I doubt you could damage one by reversing the connections. Have you looked at the printed circuit board , it may have blown a part of it away. If so correct the connections & solder a jumper across the blown circuit board.

Steve.

Ro15/07/2020 20:28:22
31 forum posts
35 photos

Hi Mark,

you can replace the board, although you may be shocked at the price!

something like this SHOULD work (worth checking compatability before ordering though):

**LINK**

I did this the first time my controller broke, but after it went pop for the second time, I replaced it with a generic speed controller for about 20 quid from ebay. Worked fine for about 5 years until I upgraded my lathe.

if you want to go down this route, look for "220v DC motor controller", but be warned, it's not a straight replacement, and if you want the reversing switch and emergency stop to work, you'll have to figure the wiring out.

Quite a saving though.

ro

 

Edited By Ro on 15/07/2020 20:29:27

Andrew Johnston15/07/2020 20:37:47
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5558 forum posts
650 photos

The ref ident for the orange disc component seems to be U1, so possibly a varistor. The yellow block behind it is a capacitor. I'm not totally convinced that it's U1 that has failed. There seems to be lot of magic smoke on the connectors some way down the yellow capacitor. What does the side of U1 that faces the yellow capacitor look like?

Andrew

Neil Wyatt15/07/2020 21:16:25
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Moderator
17970 forum posts
709 photos
77 articles

There's a chap in the USA who does repairs, he advertises on UK ebay, I'm not aware of anyone else who does and I think those old style controller boards are like hen's teeth.

Neil

Les Jones 115/07/2020 22:17:50
2135 forum posts
146 photos

Telling us which wires you connected to the wrong place may help to identify what damage you have done. Tell us the correct places the wires should connect to and where you actually connected them. can you also post a picture of the under side of the board near the burned area.

Les.

Ketan Swali16/07/2020 13:10:17
1269 forum posts
105 photos

Just for clarification:

The link in Ro's post is to board XMT2335 - which is for C3 mini-lathe.

The picture of the board in Marks picture seems to show the board XMT2325 - link which is for C2 mini-lathe, which makes sense for a Clarke CL300M.

In any case, out of stock at ARC.

If Marks son has had zero/low guidance/ training on the lathe before being let loose on it, the probability of him breaking things are high, to include hi/lo gears, control board/s, as the chances of him overloading the machine are high.

On the one hand, depending on above, it would be wrong to get upset on Marks son, and on the other hand, there is good reason why costs of certain components are high,

Ketan at ARC.

Barrie Lever16/07/2020 13:59:19
653 forum posts
75 photos
Posted by Mark Cookson on 15/07/2020 13:28:40:

Hi, we bought this lathe for my son to learn on and make parts for his race bike. But he wants to learn the hard way, he has broke it three times upto now ! The latest is he took the control box of to fix `number 2 I have broke it` then two wires came of in the control box, put them back in the wrong place then puff a diod or something like it has gone by bye in the mother board black soot to be found. Is this reparable or find a new one please. Thank you for your time.. P.S Why me, he breaks everything at the moment...

Mark

No better way to learn than to get stuck in, I admire him for at least trying.

I cannot even begin to start telling you how much equipment I broke when I was young but I learned.

Hats off to your son and I hope he can get the lathe going again.

Regards

Barrie

Mark Cookson16/07/2020 14:09:17
11 forum posts
9 photos

Thank you for all your reply`s I appreciate the time and thought you have given us.As for sending the bike to a repair shop to be fixed, that would be more costly in the long run.

Sam who is 14 races in a class called streetstock 125 with the ACU. When you are learning you fall of a lot, they say thats the way to learn ! Then his handle bar`s and foot pegs get bent and twisted some times beyond repair. These parts can be costly but for Sam to learn how to make them and may be sell a few at race meetings would be more cost affecting in the long run, plus this experience will be good to add to his skill set.

If you look at the photos I have uploaded today you can see the Orange varistor U1 as Andrew kindly mention, the orange disk looks to have failed, the rest of the board both sides looks like new.

I was given a price from Clarke yesterday of £ 165.08 plus postage. Thank you Ro for your link a touch cheaper.

As for which wires Sam got mixed up he has said they were the ones going to the emergency stop button the on and off.

My first thoughts after reading the original thread yesterday was to make this lathe some what more bomb proof, by upgrading the motor etc, so the lathe could cope with heavier work and last longer. If that cost a little more than a new circuit board in the long run it would be more cost effective ? Thank you all again for your time we a very green behind the ears but hopefully going in the right direction.

Mark Cookson16/07/2020 14:10:53
11 forum posts
9 photos

clarke cl 300 m mother board bust 3.jpgclarke cl 300 m mother board bust 4.jpgclarke cl 300 mother board bust 1.jpg

Mark Cookson16/07/2020 14:11:46
11 forum posts
9 photos

clarke cl 300 mother board bust 2.jpg

Mark Cookson16/07/2020 14:42:56
11 forum posts
9 photos
Posted by Barrie Lever on 16/07/2020 13:59:19:
Posted by Mark Cookson on 15/07/2020 13:28:40:

Hi, we bought this lathe for my son to learn on and make parts for his race bike. But he wants to learn the hard way, he has broke it three times upto now ! The latest is he took the control box of to fix `number 2 I have broke it` then two wires came of in the control box, put them back in the wrong place then puff a diod or something like it has gone by bye in the mother board black soot to be found. Is this reparable or find a new one please. Thank you for your time.. P.S Why me, he breaks everything at the moment...

Mark

No better way to learn than to get stuck in, I admire him for at least trying.

I cannot even begin to start telling you how much equipment I broke when I was young but I learned.

Hats off to your son and I hope he can get the lathe going again.

Regards

Barrie

Hi Barrie, thank you for your kind words, they will mean a lot to Sam and to me, I want Sam has have chances in life, he wants to go down this road of making his own parts not just for his bike , he has made a new mechanism to closed his bedroom door nothing fancy but he has done it, he has fixed this in class for the teacher before now. Sam wants to do the TT in the Isle of Man and be a engineer . So thats him sorted, he has a job on a Saturday learning how to rub down and respray cars wagons etc comes in handy when he scratches his bike on the race track. I want Sam to learn from the bottom up, he jsut wants to run some times it is hard to keep the reigns pulled back haha.. Thank you again..

Barrie Lever16/07/2020 15:40:14
653 forum posts
75 photos

Mark

I have done a lot of motorcycle race bike stuff, all composite, I made the fairings for a bike that won a class called Supermono at the TT at the turn of the 20th century.

Supermono was a real engineers race class, the family I made the fairings for were motorcycle race mad, the Supermono used a BMW 650 engine out at 720cc, it was not bored out rather they had made complete new cylinders for the engine.

I will dig out some photo's.

Also done all of the composites on Crescent Suzuki 2004 BSB Championship winning bike, good times.

Tell your son not to aspire to ride at the Island, it is dangerous !!

Regards

Barrie

Frances IoM16/07/2020 16:00:04
781 forum posts
26 photos
Seeing as Barrie has mentioned it - 1% - 1.5% of TT competitors die due to crashes (high % of these are first time riders), a similar number have life changing injuries - however even those less injured and recover often come back to race again.
Mark Cookson16/07/2020 16:03:06
11 forum posts
9 photos

three sisters 11-07-2020.jpg

Mark Cookson16/07/2020 16:07:26
11 forum posts
9 photos

Thanks Barrie for your reply and thank you Frances for the statistics, Sam`s Grandad and grandma live in Onchan they are marshalls at sign post corner. Sam hopefully one day will make his mind up the race tracks are safer but he is stubborn when he gets a idea in his had if you know what I mean.. Any how I hope we receive some more valuable information as to getting this lathe up and running again at so it may last a lot longer than last time !

Mark Cookson16/07/2020 16:08:19
11 forum posts
9 photos

P.S for got to say the photo is of Sam at Three Sisters last Saturday on a ACU test day..

Les Jones 116/07/2020 20:24:32
2135 forum posts
146 photos

Am I correct that when you say " mixed up he has said they were the ones going to the emergency stop button the on and off." that you mean that he connected the output of the on/off switch to terminals K3 and K4 and that he connected the wires from the emergency stop switch to terminals L1 and L2. If so I don't see that this would cause the varistor to fail but it almost certainly would have damaged other components as he connected the mains to the low voltage part of the board. The varistor is probably connected directly across the mains input to the board (terminals L1 and L2) so I think this just failed or failed due to a high voltage transient on the mains.

Les.

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