6C45P tube Rolling

Doc B. said:
AFAIK all 6C45pis are the same.

That's the theory.  Its all subjective.  I think perhaps the best sounding tubes are mystery tubes where all the labelling has been scraped away.
 
Hopefully it's not all subjective, as then we could all be just as happy buying a pile of $8 MP3 players from an electronics liquidator website and sorting through to find the one that is the most organically liquid and convincingly detailed while having air, presence, bass punch, midrange lushness and PRAT like a fine vintage Malbec, Merino wool running shoes or the smell of wet hunting dogs by the fire.
 
Doc B. said:
Hopefully it's not all subjective, as then we could all be just as happy buying a pile of $8 MP3 players from an electronics liquidator website and sorting through to find the one that is the most....

I'm fairly sure that's described in Dante's Inferno. Likely there's a guy with a pile of them doing just that, somewhere in the shadows of the 9th circle.
 
NightFlight said:
Likely there's a guy with a pile of them doing just that, somewhere in the shadows of the 9th circle.

Or in a dorm room, with his Hipstreet Titan open to an 8000 page MP3 player comparison thread on Head Fi; username - cutesillykitten;  avatar - Hello Kitty with headphones on.

Having said that I admit to having Robby Rabbit decals on my Suzuki cafe racer when I was in college. It was an insipid little 185cc two stroke and I thought the decal was suitable. Wish I could find the picture of that bike.
 
Doc,

Probably not too many head-fi'ers would even know whar a 2 stroke cafe racer is!! LOL

I grew up with Hodaka Ace 100's, Suzuki X6 Hustlers, Honda Super Hawks and lots of smoking 2 strokes!!
From the high banks od Daytona, Roeblng Road Savannah, VIR, Mid0 Ohio etc...those were differnent "fast" times.

and I am still alive to tell about it! Ha!

Alex
 
I'm putting together a 1962 Superhawk right now, to run at Bonneville this summer.
 

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OMG!  That is sweet!!! I used to ride with a friend that had a superhawk and I had a lowly CB160!!
We went to the drag races and back in the 60's they didnt know what to make of us bike nuts!!

So they just lumped us into one bracket and my friend always beat me handly!!
160cc vs 305 for the super hawk!

I was a young 16yr old that was having the time of his life!!
Ha!

Please post some pix if you get to Bonnie land!!
and BE careful!!

Alex
 
I planned to run last year but there was no way I was going to finish the bike in time. So this year I have started much earlier with a lot more commitment. I hope to carry on in your footsteps and get the bike dialed in at the local drag strip this spring. The Hayabusa guys will be shaking their heads, I'm sure. I may have some friends coming to shoot video of the Bonneville run.

My Suzuki was a TS185 dual purpose thumper that I put Avon street tires on, a racy front fender, cut the seat down and reupholstered, put on Tomaselli clipons and a Supertrapp muffler. I ran with a bud who had a CB160. We would ride the back roads between Concord and Berkeley CA, Rick hot shoeing through the turns on that CB like a flat tracker. At the time it seemed like we were so fast. I topped out at all of 80mph in a full tuck, downhill with a tailwind. Then one day a guy on an R90S blew by me on a hairpin. He came up so fast behind me I almost wet them.
I have toyed with the idea of building a CB160 track bike. There's a pretty neat group of old farts who run them in the local road racing club.
 
Talk about wetting ones self!!i
The first time I went to Road Atlanta for a 'race' school I was out there on a 600cc bike, and we were mixed in with the then "AMA" 250 gp pros..they were doing a practice test/tune session and I can remember turn 10 at Road Atlanta, downhill with 5 distinct braking markers....I thought I was fast then a 250 gp guy comes blowing by me while i was on the brakes at the 5mark and he goes in down to the 3mark full throttle, then brakes like a wield zombie, turns in and out of the turn he goes, and he looks back at me in the braking area and waves at me!!! OMG....

I got to ride with alot of great racers, held my own by no way was I world famous or in that class....Nicky, Tommy and Roger Hayden, Miguel DuHammel, Dave Aldana, Keith Code and so many more....

So many greatmemories,,,,,bikes, girls, beer, and of course Dynaco!!! Ha!
Alex

 
I love this stuff as I sit and watch the snow falll and it reminds me I need to order tires.

BTW Doc, a couldn't help but notice your tank badge...John
 
I posted this in another thread but here as well in case it gets buried!!

My beloved CB160 drag bike! Just a bit more than 9 CU IN!!

Solid aluminum billet angle stock for rear "shock"!

Bug Sprayer gas can and the straight pipes were from my Mom's Electrolux Vacuum Cleaner!!!

I couldnt afford anything back then!!

Matter of fact I could have bought (2) of these back then for the price of my Mainline today!!! LOL!

Alex

 

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Hi, I found this adapter, 5842->6c45: https://www.ebay.ie/itm/304698401779

It opens up access to Raytheon, Amperex, Sylvania, Mullard, and even affordable WE on Mainline.

Is it safe to use? It is not the only such adaptor
 
Is it safe to use?  Probably, and sound will come out if you use the adapter.  I'm not generally a fan of using adapters like that with high Gm tubes, but YMMV.

I think what you have to consider is that we have experience with the 5842 and it would have cost less to put the 5842 into the Mainline, but we didn't do that. 

The 6C45 has not quite twice the transconductance and a bit more gain than a 5842.  This makes the 5842 not particularly well suited for the output transformer in the Mainline, and the lower gain isn't particularly helpful either. 

For 5842 use, you can check out the Soul Sister preamp design in Valve Volume 4 1998 for reference.
 
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