Pars

I use TL-071 or TL-081 for singles (or 72s and 82s for duals). From testing opamps in a discrete I/V stage (0 feedback, so touchy), these seem to pull the offset in faster and lower than the OP27s I had do. Particularly the 08x. I believe Justin used to use these in the GS-1 and probably in the GSX as well.

Happy Birthday!

I would think it to be more tolerable on a commuter. For general riding, it somewhat defeats the purpose why you are out there.

Happy Birthday Jeff!

I don't think you really need a high power resistor for this. http://www.diyhifi.org/forums/viewtopic.php?f=15&t=1957#p41696 I have a bunch of MKP1837 caps laying around. I'll have to measure them but used a 7.5 x 5.5 mm Wima outline, 5.08mm LS for it. I usually just solder these on the bottom of the board, but figured since I was laying the board out anyway...

Yes, those are them. Damn, that is a good price... don't know if I need any tires or not right now. They are supposed to be coming out with these in a 700x28, which I seem to be gravitating towards anymore. Used to ride 23s and 25s.

Clinchers (i.e., open tubulars): http://www.veloflex.it/products/open_tubulars.asp?lang=en When I've ordered from Wiggle here in the US, I didn't have to pay customs (or VAT) or anything else. A pair of Conti 4Seasons w/tubes for ~$90 shipped. Arrived in a week. Not sure how this will go where you are, but something to be aware.of. I used to ride tubulars back when I started riding in the '70s. Clinchers back then really sucked. I used Clement Criteriums (230g) cotton cased tires. Back then, they were around $25/ea., which was expensive for me being in school. Blowing a pair of tires really sucked financially I had a pair of clincher wheels build in around 1980 and switched permanently then. I do have a pair of tubular wheels and have used then once or twice. They still ride as nice as I remember.

Oh, you're running tubular (sew-ups)? I was assuming you were using clinchers.

I had mentioned using Schottky rectifiers for this. I think I am going to have a few of these made: These are setup to take either a D201 axial diode (31DQ10 or equivalent), or also accept a TO220 package like an MUR820. I know the TO220s should probably be oriented 90 degrees from how I have them for airflow, but my intent was the axial Schottky diodes on these. I home-etched a pair of these and used them in my original Dynalo (headamp board). I used some Mill-Max right angle pins on those (3301-2-14-21-00-00-08-0), and plugged them right into the RS402 bridge holes on the PCB. If anyone with appropriate facilities wanted to compare these noise-wise to the packaged rectifiers, I could send them a pair to test. EDIT: Added John Swenson snubber across AC primary

You guys should try some Veloflex Masters sometime. Usually you can pick these up online for pretty good prices; look at Wiggle, BikeTiresDirect, Western Bike Works, etc.

I still like my Hakko 936, but haven't used most others mentioned here. The Hakko does what I need it to. +3 on multiple tips as it makes a big difference in using the right tool for the job. EDIT: Are you still doing any building Naaman? I used to love seeing what you did in Iraq

I would also ohm out the zeners to ground on the positive side (every junction). Any short on these would cause problems I would think?

Which heatsinks are those that you are using? I had been toying with using something like these: http://www.mouser.com/ProductDetail/Ohmite/R2A-CT4-38E/?qs=%2fha2pyFadugu%2fkSjFHjoOqIUacMQSR81IknUuMHd2REdwNmhs01RGA%3d%3d

Happy Birthday!

Happy Birthday Mike!

Happy Birthday!

Very sorry Marshall. My condolences to you and your family.

I hadn't really noticed nor was commenting on the liquid cooling feature; more that the excessive bling reminded me of some shit...

Happy Birthday Grahame!

Nice build. Regarding aliexpress, was poking around, and look what came up... http://www.aliexpress.com/item/Special-case-for-T2-electrostatic-headphone-amplifier-of-KG-version-and-the-special-water-cooled-suite/32287454977.html?spm=2114.01020208.3.203.ODIe0L&ws_ab_test=searchweb201556_1,searchweb201644_4_10001_10002_10005_301_10006_10003_10004_62,searchweb201560_8,searchweb1451318400_6150 Looks like something right up someone in skokie's alley

Happy Birthday John and Frank! I hope you both have a great one!

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Cool. Interesting to see how this turns out, though I'm not sure I ever knew why you needed or wanted these done this way.

Since the top and bottom copper are separate layers in the Gerbers, I don't see why not?

Happy Birthday!