New Organ Build Topsy 3

[ted heid]

VERY nice Jay! I have mine "working" but what comes out so far is is not quite music, still needs more work before I can post a video. Where are you getting your music from? Merry Christmas and good luck with your builds to all.

[Jay Caughron]

Thanks Ted A frined of mine loaned me a couple of tunes. I will start looking for some music and when I find some will post it here.

[graham wheeler]

A very happy new year to you all , we saw in 2011 with a fantastic fireworks display from our Sky tower here in Auckland,WOW!!!.
Just thought i would show you what santa brought me for Xmas, unfortunately Santa didnt pay for them
just waiting on some leather to arrive and then I can start covering the bellows,
cheers
Graham

[Jay Caughron]

Alright Graham keep us posted on your progress with some pictures.

I am starting to straighten up my wiring while I am waiting for my solenoids to show up. Once I get the woodblocks set up and working then everything will come apart for finial paint and finish.

Jay

[graham wheeler]

Here's a thought for the "threaded plate" to anchor the bellows. I plan on using Tee nuts instead of the plate. No need to cut, drill and tap the plates. I have used them for years and they work great. Any thoughts as to why they would not work?

Hi Harold
That sounds like a good idea i might steal that What did you guys use to attach to the crank, John shows a single hinge, is that what you used??
cheers
Graham

[Jay Caughron]

That is what I used Graham and so far it works just fine just make sure you use a good quality hinge. I have my conrod hooked up in the offset hole because my bearing assy is a little to wide.

[ted heid]

Having a little trouble with this. The schematic Fig. 8 on page 53, the resistors above and below the 2 pots are mislabeled, I assumed they are 47K and 33K or should they be 4K and 3K which might be causing me a problem?

[Bob Meyer]

Having a little trouble with this. The schematic Fig. 8 on page 53, the resistors above and below the 2 pots are mislabeled, I assumed they are 47K and 33K or should they be 4K and 3K which might be causing me a problem?

The 4K7 and 3K3 designations mean 4.7K and 3.3K. European standard I think.

Bob

[Harold Whipps]

47K and 33K should be correct. Without getting real technical, just look at the total resistance across the complete leg and the resistance, 100K, in the other leg going to the comparator. They should be close to get a good comparison. Hope that helps and not confuse.

[ted heid]

At the output of IC5B there is a notation of 2 56K resistors. Are the resistor symbols just missing from the output from pin 4 on the schematic or are these just bogus values?