Recent Posts

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The Water Cooler / Re: Experimenting with a pulse generator
« Last post by Doc on Today at 10:00:02 PM »
I had a comment that it looked like the motor was harder to start with the pulse unit. So I did a short little video oof starting to let you be the judge.

Tools / Re: Unknown bandsaw.
« Last post by russ57 on Today at 08:41:06 PM »
When I got my s/h bandsaw, the seller proudly advised it had been 'setup' by 'an expert' and that it would need no adjustment to be perfect.

I found the 'expert' had decided that the bearings could not possibly be correct, bearing on the face, and had managed to adjust so they pressed on the side of the blade.
Along with the blunt blade, I'm not sure it could have cut through a piece of paper...

The seller was apologetic about the quirky 'tap handles' used instead of the 'proper' knobs.


Electronics & IC Programing / Re: Nissan Leaf battery.
« Last post by russ57 on Today at 08:33:27 PM »
I would think aircon use would explain that. Heating can use some recovery from the motor.

My outlander phev shows an instant electric range drop of 10% when the a/c is turned on.

Obviously dependant on climate...


Electronics & IC Programing / Nissan Leaf battery.
« Last post by DavidA on Today at 06:29:25 PM »
I was looking at an article on the Battery life of the Nissan Leaf, and the following opening remark struck me as a bit odd.

A Study on Real-Life Nissan Leaf Battery Deterioration
by Erin Yurday

The new 40 kWh Nissan Leaf has a real-life range of 170 miles (160 miles in summer and 180 miles in winter). But how does this range change over your first few years of car ownership?

How can the car have a greater range in winter, when I assume the lights, heater etc are used more, than in the summer ?

I wasn't sure where to post this snippet, any mod feel free to move it to somewhere more appropriate.

Here is the link if you want to read more.

Radio Control Models / Re: State of the art 3D printed RC yachts
« Last post by Joules on Today at 06:29:11 PM »
That didn't take long, the ballast was 7 UK pence.  The translucent hull was very useful for seeing the waterline.

7 pence weighs 18 grams.

And, the hull is watertight.
Radio Control Models / Re: State of the art 3D printed RC yachts
« Last post by Joules on Today at 06:14:01 PM »
My design is more a keel boat pond yacht.  The actual model will be about 670mm long, but after reading the above website I decided to give spiral printing a go with the new 0.3mm nozzle.  That limited me to a 200mm test print, I was not disappointed.  The model design was started a couple of days ago as just a doodle idea, got more serious yesterday and prepared for 3D printing today.  The print took 6.5hrs at 0.1mm layers.  Once the print was done and the hull started cooling I had to puncture the deck before the shell imploded.  It was a little funky at the bow as the print spirals out and you need tons of cooling to stop it just being a melted blob.  With hind site, don't print a closed bow and do a plug for it.  The hull came in at 10grams, that is just crazy light, even compared to a 2 part styrene vac moulded hull.  The flat deck is a bit floppy, I should have designed it with some camber to make it more rigid, but not an issue as I need to open it up for ballast and test floating.  Rhino gives me some handy hydrodynamic analysis, this can be scaled up for the larger hull, to see how much weight I can have above the deck without it falling over in the water !!!   My cheap cnc craft cutter rounds out the equipment for model yacht making as it can cut multi panel sails in minutes and vinyl patches for hatch covers.  I can't ever remember building a hull in less than a month and this thing doesn't need paint.

With the deck cut out, the hull now weighs in at 7grams.
How to's / Re: Grinding the jaws on my three jaw chuck
« Last post by Pete. on Today at 06:03:27 PM »
How to's / Re: Grinding the jaws on my three jaw chuck
« Last post by awemawson on Today at 05:47:16 PM »
Ade, how do all the Chinese eBay sellers manage to offer such low (or even included) postage on items? I can't remember where I heard it, but I did hear tell that the Chinese Government subsidise such transactions, but I don't know if that is apocryphal or not?
Introductions / Re: Hi from Bolton UK.
« Last post by awemawson on Today at 05:41:26 PM »
Ade, you KNOW you really want to do it yourself  :lol:
Project Logs / Chester 626 riser block
« Last post by Markfd on Today at 04:16:54 PM »
I want to fit a riser block to my new Chester 626 mill, which seems to be a popular improvement. I have downloaded drawings from the Yahoo! group & studied photographs, but have a couple of questions. Why is the block bored out which seems to be extra work? Why mill out slots for nuts when the block could be drilled for high tensile studs? Can I use a 4 riser without replacing the z axis screw providing I move the cap head stop on the column higher?
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