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He imagines that it is high efficiency.  I wonder how many other things he imagines?  I imagine if you took that many solar cells And didn't shade them most of the time it would be a lot better.  An artistic novelty that has no practical purpose.  Or t...

Hello Gary,

  I am currently working on the same solution. Your site has given me many ideas and I would like to work together on this to help promote this to anyone interested. Initially so as not to clutter the board please email me at:  bruggelog at...

this is brilliant , it's got ventilation fan written all over it.

Quote from: SparWeb on Today at 01:22:31 PMOh, I see you already have a pyranometer mounted on the building.  That will be more accurate than the photocell.  Though more complicated, because only a microcontroller or...

Hi guys.
I found this on Youtube and thought it would be of interest and worthy of discussion here - it's certainly got me thinking today. It's a solar powered partialy shaded axial motor, 4 coil/5 pole, very strange  - Skip the annoying advert (I h...

Oh, I see you already have a pyranometer mounted on the building.  That will be more accurate than the photocell.  Though more complicated, because only a microcontroller or a computer can drive it, or know what to do with the readings it spits out.  I...

Hi Gary,
I enjoyed reading  through your sunspace experiment pages when I discovered them a few months ago.  Hope it works as greenhouse for you.

How well will shadecloth work to insulate the glazings overnight?  If stretched continuously across the en...

number 2 al is your  best buy.out put is going to be so small that a charge controller  or diversion wont really be needed.tune the battery bank size to get a tolerable match.

Hi,
Just wondering if anyone is aware of a simple and inexpensive system that will put logged data online in the form of charts?

There used to be a nice simple service called Pachube, but they seem to have morphed into to commercial product that is rat...

Hi,
I've been working on getting our greenhouse into a four season one.

It started as this sort of test space for low thermal mass sunspace for space heating: http://www.builditsolar.com/Projects/Sunspace/LowMassSunspace/TestsLowMassSunspace.htm

I've a...

I sand the shaft lightly, apply some axle grease and try a bearing race puller.  http://www.harborfreight.com/bearing-separator-and-puller-set-93980.html
If the race do...

My buddy's house had a green house attached to it. Upon his dad retiring he got a green thumb big time. The house had a basement which was half above/below ground. The basement also had a back door like all basements should that led to the side of the ...

Now that you point out that the weld bead works when put in the OUTER race, now I see what they meant (on the other website).  In future cases where I have one stuck in the housing, I could try that.  A little dicey with my MIG, but I know a guy with a...

My eBike hub cracked inside and the bearings on that side caved in. I made a temporary fix using a sealed bearing on that side, but that bearing failed, too. I had bought 2 of the sealed bearings, so I reinforced the inside with a lock nut and washer a...

This topic has been moved to Quarantine.
Sorry, but we have a rule of not allowing first time posters to go right into selling.
IF however you're a previous user/poster send us you're original u...

For Sale: Omega Lister Clone 6/1 "NEW".......$1800.00   Pickup Only

Matt.....Escondido Ca

Back in the days when I used to repair gearbox's I found the easiest way to get bearing off shafts was to just stick the shaft on the over head crane so i could spin the shaft then apply the oxy torch to the bearing while slowly spinning the shaft. Wor...

The slitting wheel method works a treat. For the outer race welding round the track works great but normally ball race are not a tight fit on the outer housing.

Once steel on steel has cold welded there is little chance of getting enough heat intio the...

heat the race good and hot--then stick the shaft end in ice..the rapid cooling  and contraction of the shaft should make it easyer to break the race free............

Sparweb  you can find any number of suggestions on the web especially in the practical machinist
 Had this been the outer race you could have run a weld bead around the inside when it cooled it would have contracted I used to rebuild a lot of heavy eq...