header("Access-Control-Allow-Origin: *"); header("Access-Control-Allow-Headers: *");?>
more ads from fender
it’s my tweed deluxe 5d3 with Astron cap paper sleeves with Sprague caps inside. TE-1207 for 25uf 25V. and, 16uf 475V for 16uf 450V. I’m still after one more Astron 16uf 450V cap or sleeve. but even dead astron caps are not cheap on ebay. I tried it but the ending price went way further than I expected.
this 5d3 is getting closer to the original shape with the restuff filter caps. the correct switchcraft 1/4 phone plug and 18awg Gaviitt cloth wire are coming to me as well.
only the speakers I got so far and the cab will be done in a month give or take. they are 5″ alnico speaker Fisher branded. the frame looks like Oxford and I believe they came from Oxford.
I’m updating this post not to make people confused. I believed B+ was lower with 5v4g than 5y3. but 5v4g is increasing B+ and makes the bias warmer than 5y3. I guess it is the reason I feel the amps are more alive with 5v4g
then I noticed the vintage amps with the original caps from 50’s and early 60’s are more vulnerable with 5v4g to 60hz hum. I’m just guessing leakage of the coupling caps and the filter caps could be the reason. I’m still enjoying 5v4g with the amps with new components. didn’t have an issue with my 5D3 which has new filter caps either.
one of my 5V4G tubes shows very low B+. the 60hz hum came from it I believe
there are more and better info for 5vg and 5y3 rectifiers on the gearpage.net
I hook up tweed champ, deluxe, and m-track 2×2 together while jamming with youtube. 5v4g sounds still alive with this stereo and digital setup to me. but, m-track 2×2 is cheap and sharing the one single full bandwidth with usb and instrument at the same time. it sounds good while using only one of them. it sucks when the knob is at the center.
it’s the knob on m-track 2×2. don’t buy it if you want to use your guitar amps as monitor speakers while playing guitar through the direct input. maybe I’m just doing this wrong.
They tweaked the large sprague caps and the small ones too much for the scene. but it’s still good to see my favorite sprague capacitors on a movie. aren’t they orange back in the days?
this board is Apple-1 from this movie Jobs from 2013
btw, I wanted to capture the scenes. and it didn’t work with Safari browser. this helped me out. you can capture the screenshot while it’s playing on chrome. it didn’t work while posed.
377V with Bendix 6106 5y3wgt which has purchased as NOS and less than 1 year old
366V with Hytron 5y3wgt which is many many years old
369V with GE 5y3gt less than 1 year old
393V with GE 5v4g which I purchased as NOS and less than 1 year old
396V with RCA 5v4g as NOS and less than 1 year old
370V with another Bendix I have purchased as slightly used condition a couple of months ago
btw, I recently scored this Bendix for $25 off ebay. but it just killed my 5F1’s fuse and the B+ is only 266V with 5D3. not every single Bendix lasts like forever
and, figured out why I had 60hz hum with this 5v4g. this one shows only 307v. I’m going to update the 5v4g thread
Unhappy with the life of your smartphone battery? Thought so. Help could be on the way from one of the most common, yet poorly understood, forms of power generation: static electricity.
“Nearly everyone has zapped their finger on a doorknob or seen child’s hair stick to a balloon. To incorporate this energy into our electronics, we must better understand the driving forces behind it,” says James Chen, PhD, assistant professor in the Department of Mechanical and Aerospace Engineering in the School of Engineering and Applied Sciences at the University at Buffalo.
Chen is a co-author of a study in the December issue of the Journal of Electrostatics that suggests the cause of this hair-raising phenomenon is tiny structural changes that occur at the surface of materials when they come into contact with each other.
The finding could ultimately help technology companies create more sustainable and longer-lasting power sources for small electronic devices.
Supported by a $400,000 National Science Foundation grant, Chen and Zayd Leseman, PhD, associate professor of mechanical and nuclear engineering at Kansas State University, are conducting research on the triboelectric effect, a phenomenon wherein one material becomes electrically charged after it contacts a different material through friction.
The triboelectric effect has been known since ancient times, but the tools for understanding and applying it have only become available recently due to the advent of nanotechnology.
“The idea our study presents directly answers this ancient mystery, and it has the potential to unify the existing theory. The numerical results are consistent with the published experimental observations,” says Chen.
The research Chen and Leseman conduct is a mix of disciplines, including contact mechanics, solid mechanics, materials science, electrical engineering and manufacturing. With computer models and physical experiments, they are engineering triboelectric nanogenerators (TENGs), which are capable of controlling and harvesting static electricity.
“The friction between your fingers and your smartphone screen. The friction between your wrist and smartwatch. Even the friction between your shoe and the ground. These are great potential sources of energy that we can to tap into,” Chen says. “Ultimately, this research can increase our economic security and help society by reducing our need for conventional sources of power.”
As part of the grant, Chen has worked with UB undergraduate students, as well as high school students at the Health Sciences Charter School in Buffalo, to promote science, technology, engineering and math (STEM) education.
MR-4BX series has been produced for only a couple of years. the first version came at ’06 and replaced with B-Max4 which was different from previous yoke buggies at ’08.
MR-4BX series is like the last blood of traditional Yokomo to me. and I see the same blood on Jconcepts BJ4.
I have managed to get a nicely used Worlds edition last month. and took some pics with my factory edition. they both came at ’07.
the differences between them are main chassis, F/R shock towers, top deck(s), steering, rear bulkhead, and a few misc parts
MR-4BX Worlds came with a new camber mount which allows only the longest upper rod setup. also the steering is different than previous 2 versions
this new camber mount can be installed on older versions as well
the steerings are quite different. I hope I can feel the difference while I’m running this Worlds edition. but, didn’t have a chance so far.
this steering was introduced with MX-4. prototype MX-4 still had older servo saver. and the first time I saw this was in MX-4 kit.
but the difference is the angle. this steering system on MR-4BX is tilted for better handling.
MR-4BX Worlds came with this 1 piece chassis with 2 extra holes for new steering system. please ignore the stainless screws on the Factory chassis. I’d go back to the black steel screws.
the top deck, now it covers the rear belt. and new camber mount is here
Factory edition had 2 piece top deck like the original version. but the rear piece was improved that older one has clearance problem with the belt
there were a few guys tried this before Worlds edition came. the shocks were moved to the back end of the car.
also they put a camber mount like the front end
the original and Factory edition had same suspension geometry. the shocks can be moved to the back end with this stock mount plus a few tricks
the new aluminum part which holds the the shock tower is changed along with new bulkhead and camber mount