5E9 Tweed Tremolux Build Thread: Pics on Page 11

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sookwinder
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Re: 5E9 Tweed Tremolux Build Thread: I'm Doing This!

Post by sookwinder » Sat Jun 17, 2017 6:47 am

Forget drill presses ... if everything was equal a drill press is the way to go. But the problem is the securing of the chassis within the range of the drill press and making sure is doesn't slip or just drill at the wrong angle.

I have made this mistake ...learn from my mistake.

Buy some step drills... they look like this:
Image

They will last a lifetime. You can get them is various size ranges
The holes for the pots and jack inputs are oversize anyway... so you never have one that is the EXACT size of the threaded shaft.
I also use them to drill the holes for additional 9 pin valves when needed.
relaxing alternative to doing actual work ...

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Re: 5E9 Tweed Tremolux Build Thread: I'm Doing This!

Post by wproffitt » Sat Jun 17, 2017 8:58 am

Good advice, David! I'll keep that in mind as I approach this part of the project. I have a challenge, and I haven't even started building yet! We now have the iron. Hooray!
Image
BUT, the PT cutout in this chassis is too big.
Image

Shall I rivet a plate at one end of the hole so that this PT will fit in a more snug fashion or will this not be sturdy enough? What say you?

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Re: 5E9 Tweed Tremolux Build Thread: I'm Doing This!

Post by jimboyogi » Mon Jun 19, 2017 4:27 pm

Go for sturdy!

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Re: 5E9 Tweed Tremolux Build Thread: I'm Doing This!

Post by wproffitt » Mon Jun 19, 2017 7:16 pm

James,
I'm pretty sure that I can put a plate into the chassis that will make the cutout sturdy enough for the PT, but I don't want to create a rattle or something that's never quite right. I found a place on Reverb that will do a tweed style chassis in any length I want. Maybe I just send this back and go for a chassis where I won't be fixing things from the start. Holes that are too small are one thing, but a PT cutout that's too big doesn't seem like the kind of problem I want to be fixing from the start here.
OSG, please chime in if you've ever dealt with this before. I'm all ears!

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Re: 5E9 Tweed Tremolux Build Thread: I'm Doing This!

Post by jimboyogi » Mon Jun 19, 2017 7:26 pm

wproffitt wrote:James,
I'm pretty sure that I can put a plate into the chassis that will make the cutout sturdy enough for the PT, but I don't want to create a rattle or something that's never quite right. I found a place on Reverb that will do a tweed style chassis in any length I want. Maybe I just send this back and go for a chassis where I won't be fixing things from the start. Holes that are too small are one thing, but a PT cutout that's too big doesn't seem like the kind of problem I want to be fixing from the start here.
OSG, please chime in if you've ever dealt with this before. I'm all ears!
I bend up my own chassis, so sorry do not have direct experience with this. However if the price is right for getting an exact chassis made up, and you can return the one that doesn't quite fit, then I'd go for the exact one. You've got enough to learn about with the electronics, without having to also study metalwork 101 :)

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Re: 5E9 Tweed Tremolux Build Thread: I'm Doing This!

Post by wproffitt » Wed Jun 21, 2017 3:52 pm

You're right! I sent it back today. I'll be doing a custom order in a new chassis soon.

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Re: 5E9 Tweed Tremolux Build Thread: I'm Doing This!

Post by wproffitt » Mon Jul 03, 2017 7:59 pm

Look what showed up in the mail while I was traveling with my students! I need to go to Europe more often!
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Image

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Re: 5E9 Tweed Tremolux Build Thread: I'm Doing This!

Post by sookwinder » Wed Jul 05, 2017 1:14 am

great selection of valves :)
relaxing alternative to doing actual work ...

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Re: 5E9 Tweed Tremolux Build Thread: I'm Doing This!

Post by wproffitt » Wed Jul 05, 2017 11:44 am

Thanks! I reasoned that, with the exception of the 12ax7 that makes the trem work, I should go NOS or ANOS on this. If I'm building it, I'd like to do it right the first time. I'm sure that I'll make mistakes along the way, though.
Last edited by wproffitt on Thu Jul 06, 2017 4:19 pm, edited 1 time in total.

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Re: 5E9 Tweed Tremolux Build Thread: I'm Doing This!

Post by Shadoweclipse13 » Wed Jul 05, 2017 4:00 pm

Subscribed!!
Pickup Switching Mad Scientist
http://www.offsetguitars.com/forums/viewtopic.php?f=8&t=104282&p=1438384#p1438384

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Re: 5E9 Tweed Tremolux Build Thread: I'm Doing This!

Post by Ursa Minor » Wed Jul 05, 2017 5:44 pm

Checking in! Looks like things are moving along nicely! Looking forward to the impending build! What a great circuit to start out with.
The artist formerly known as kosmonautmayhem.

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Re: 5E9 Tweed Tremolux Build Thread: I'm Doing This!

Post by ludobag1 » Wed Jul 05, 2017 10:11 pm

carefull with the sylvania ,i have buy two 12 at7 for my reverb and none of them working ,hopfully i have buy them in a store and with little talk the guys exchange them for a electro harmonix one
first reaction of him was my reverb doesn't work ,then i tell him if you are sure of your tube check them ! it is easyer for guy to sale NOS than doen't work and tell them is it your fault !
now i stay a little far from NOS (new tubes are also not good sometimes i have a 12 AX7 Groove tube microphonics )
the advise i can say is try it before in a working amp, reverb ect ,you have; to be sure the tube are trouble free before searchin long time to trouble check your build ;)

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Re: 5E9 Tweed Tremolux Build Thread: I'm Doing This!

Post by MuscleDad420 » Thu Jul 06, 2017 3:27 am

+1 to NOS being a shaky decision. The amp circuit is the ultimate bench test and tube testers used by sellers only go so far with determing a tube's strength and condition. Especially in a first time build you may end up with issues that have you chasing your tail later on.

If you have another (appropriate) tube amp to swap the tubes into, burn them in a little, and verify they work it may save you a future headache.

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Re: 5E9 Tweed Tremolux Build Thread: I'm Doing This!

Post by sookwinder » Thu Jul 06, 2017 4:17 am

MuscleDad420 wrote:+1 to NOS being a shaky decision.
I am sorry ... but this statement is blatantly wrong.

Evidence?
Expert advice?
chicken entrails?

Do some searches for previous threads here at OSG where NOS and vintage valves have been discussed in rfelation to modern valves.

If we just want to use my own empirical evidence. I have many hundreds of NOS valves ... over the past 10 years I have purchased them from the USA, Russia, Turkey, the UK, Germany, Thailand, India, Canada, Taiwan, Bulgaria, The Netherlands, Czech Republic. Every one has had to be shipped airmail to Australia, everyone had to be exposed to the idiots that are postal workers. All but one of these valves (rectifiers, power and preamp valves) I have was perfect. The single valve that was faulty was a RCA 12AX7 that had one of the triodes DOA.

Let me now think of the modern valves I have purchased. Firstly they sound shit compared to vintage, many times the design criteria is way off the original specs from the 50s, they last a fraction of the time period that vintage last. I would hazard a guess that 30% of the modern valves I have had to return because they were either DOA or did not function correctly. Hence why I started looking at and using vintage.

A brand new electronic item sits in its box , on a shelf, for 50 years. Tell me ... why would it have any more reason to be "faulty" than a new electronic item manufactured last month and sitting on a shelf for 2 weeks?
relaxing alternative to doing actual work ...

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Re: 5E9 Tweed Tremolux Build Thread: I'm Doing This!

Post by wproffitt » Thu Jul 06, 2017 5:55 am

Don't get me wrong: I have some trepidation about buying a couple of hundred dollars of old tubes from some place I cannot easily visit. However, in this case, the online vendor in question has a good reputation and I'm confident that, should things go wrong, we can work it out. I do have some spare new production tubes around to test things against so that I can narrow down problems if/when they occur.

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