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Old 02-11-2013, 02:27 PM   #61
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Default Re: Swedish 45 build

Yeah the fender looks good!
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Old 02-11-2013, 03:30 PM   #62
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Default Re: Swedish 45 build

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Today i striped down the SU before cleaning and modification. I've got an old paper about modifying these carbs to work without fuel pump.
A larger needle and seat would work well.



There was two company's that was making these that I knew of.



Also would be a good idea to enlarge the drilled port from the bowl to the main jet.
And install a smaller float for more gas in the float chamber...



These are available in brass or the New Stay-Up Floats....



The new StayUp® float is resistant to modern ethanol based fuels and has a military spec closed cell construction making it puncture proof. The float has been designed taking into consideration the brass original so that the specification remains the same except the new construction.
The material specified was used by the S.U Carburetor Company for military installations in the 1980s, where a guaranteed fail safe operation was critical. The secret behind the material has been released again and upgraded for the manufacture of this float, making it virtually unsinkable.

Last edited by Dragstews; 02-11-2013 at 04:32 PM.
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Old 03-03-2013, 02:22 PM   #63
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Default Re: Swedish 45 build

Well there's not been a lot of updates here.. Progress is slow.
I decided to try an crankcasepressure fed fuelpump fore my su carb. they are small and cheap and common in snowmobile or boating applications.

Other than that, carb has been refurbished and new parts has been ordered.

My 70mm alloy bends for my plumbing has come and been returned to sender, they were way to big to be fitted between chargerdrivechain /frame and chargerdrivechain/ rear barrel.

Alot of time has been wasted on fenderbrackets.
Functional bracket is easy, good looking are difficult.

But this weekend i tried metal spinning for the first time, I was trying to make a velocitystack for the Su, but it was alot harder than it looked on youtube.
(almost everything is)
I need an thinner and softer alloy, than i think it will work. time will tell
Heres a couple of pic's of failure and an su pic

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Old 03-10-2013, 07:06 AM   #64
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Default Re: Swedish 45 build

I've been testing this metalspinning method, and its fun.
I made a velocitystack and a bracket for the carb but i messed it up when welding them together So it made no sense to make it shiny
try,try again
New bracket is made and if my hangover would let go, i would spinn another stack. its quite easy once you get the hang of it.
it took like 15-20tries before i got it right.

Last edited by Elffors; 03-13-2014 at 04:20 PM.
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Old 03-10-2013, 12:39 PM   #65
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Default Re: Swedish 45 build

Getting closer......weather warming up?
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Old 03-10-2013, 01:33 PM   #66
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Default Re: Swedish 45 build

thats what i like about the swedish guys always doin wild shit
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Old 03-10-2013, 02:07 PM   #67
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Default Re: Swedish 45 build

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Getting closer......weather warming up?
Naa.. Spring is around the corner but just now it's -10degrees celcius.

soo much to do, so little time. (Read family)

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thats what i like about the swedish guys always doin wild shit
Thanxs!
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Old 03-10-2013, 04:48 PM   #68
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Default Re: Swedish 45 build

Good man.
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Old 03-18-2013, 03:05 PM   #69
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Default Re: Swedish 45 build

Im trying to sort out the plumbing for the charger to intake.
I have 3 pieces, chargeroutlet, pipe and intake
Since im aiming for a look older than me, i can't remember what old racers would have used in terms of hoses and clamps.

options known to me is v-band clamps, wiggins clamps and silconehose and standard ABA clamps. They all feel to modern for an 1950-ish style racebike. What do you think?
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Old 03-18-2013, 03:19 PM   #70
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Default Re: Swedish 45 build

http://www.alfabb.com/bb/forums/spid...h-keeping.html
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Old 03-18-2013, 03:30 PM   #71
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Default Re: Swedish 45 build

Honestly the blower isn't exactly the old timey kind. Function over form would make the form fit the bike I would think.

Your craftsmanship is fantastic anyway. I doubt a clamp of any kind would end up looking bad once you are done.
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Old 03-18-2013, 03:46 PM   #72
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Default Re: Swedish 45 build

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Honestly the blower isn't exactly the old timey kind. Function over form would make the form fit the bike I would think.

Your craftsmanship is fantastic anyway. I doubt a clamp of any kind would end up looking bad once you are done.
I know its not a true period build but i like to keep it as old looking as i resonably can.
Here in sweden we have these old 50-ish cabincompressors from the saab "flying barrel" jetfighter. But i can have like 5 of these modern eatons for the price of one useless saabcompressor.
So money AND speed made me do it

And thanks
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Old 03-18-2013, 03:50 PM   #73
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Default Re: Swedish 45 build

That's what I was thinking...cost over form over function..or some combo of those.

Just get it working then, we can talk pretty!

You could just add some tie wire to the clamps bolts to make it look racier..
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Old 03-18-2013, 03:59 PM   #74
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That's what I was thinking...cost over form over function..or some combo of those.

Just get it working then, we can talk pretty!

You could just add some tie wire to the clamps bolts to make it look racier..
I liked the heavy duty look on the hose that you linked. kinda dumptruck radiator hoseish.
I guess it's back to the industrial warehouse AGAIN, they know me by first name by now.
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Old 03-18-2013, 04:24 PM   #75
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Default Re: Swedish 45 build

Very Interesting stuff - keep i commin..!!
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Old 03-18-2013, 04:27 PM   #76
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I liked the heavy duty look on the hose that you linked. kinda dumptruck radiator hoseish.
I guess it's back to the industrial warehouse AGAIN, they know me by first name by now.

DUMP truck!!

That's classic Alpha Romeo stuff. well yeah I guess its the same.
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Old 03-20-2013, 05:30 AM   #77
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DUMP truck!!

That's classic Alpha Romeo stuff. well yeah I guess its the same.
..Some say, of all the diehard classic carfans in the world, the alfa fans are the ones who rides their classic cars the least...
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Old 03-20-2013, 05:34 AM   #78
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Very Interesting stuff - keep i commin..!!
Thanks!
If i could get the hang of aluwelding a bit better the updates would be rolling in, in spades.
It's always some black crap appering from nowhere that messe's it up.
what was now again that was next to godliness?
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Old 03-20-2013, 11:47 AM   #79
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Thanks!
If i could get the hang of aluwelding a bit better the updates would be rolling in, in spades.
It's always some black crap appering from nowhere that messe's it up.
what was now again that was next to godliness?

I did an oil pan once like that...

Chased a leak for days and never got it. Some aluminum is poorly cast and had crap in it. All you can do is clean and weld and clean and reweld the same and clean and reweld. You've got the idea already I'm sure.
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"In short, if you have engineering experience and are cautious and sensible they're fun and look great, if you're lazy and stupid, throw them on the bike and go for a ride you'll be dead the same day." -=JL=
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Old 03-20-2013, 12:26 PM   #80
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I would pile the miles on that bobber first.
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