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Fuel Fuel Delivery


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July 16th, 2020, 12:51 AM   #11
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Joined: Nov 2001
From: Ely, England

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I Ride: Husaberg FE501e 2003
I thought I'd show a couple of interesting mods that (typically) Husaberg never did to their bikes but others have.

the photo through the carb is of a Husky PHM carb but they used the alloy slide and you can see the ditch in the front face for the accelerator pump to operate.

so look carefully at the back to the left of the needle, a Husky cut out a notch. this forces the air mostly under the middle of the slide and then around the atomiser WHICH IT HUGS and then leaves via the middle. this means valuable fuel fuel is being sucked, lifted and carried out by air that never strays far off the middle path.

The second photo is one of three I have marked "strauss" so i trust he was an Austrian composer that had a Husaberg in 1784.....

In his photo, he's doing the opposite and spreading the air out "away" from the middle. those cutaways look quite tall but think about it; the venturi is ROUND and therefore the curve 'upwards' of the venturi means this will only appear as a tiny curved slit. like a 70s 'smiley'!

My money is on Husky having it right.

it would be interesting to compare the 'round' atomiser bush versus the 'bishops mitre'.

Taffy
Attached Thumbnails
FE501e 2001-2003 Performance Jetting Kit-husky-atomiser-bush.jpg   FE501e 2001-2003 Performance Jetting Kit-strauss-slide-underneath.jpg  

Last edited by Taffy; July 17th, 2020 at 12:12 AM.
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July 27th, 2020, 10:44 AM   #12
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Joined: Nov 2001
From: Ely, England

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I Ride: Husaberg FE501e 2003
Whilst developing the perfect needle I have had cause to thicken the tip or 'root' of the needle. i dipped it twice in a pot of laquer and then cooked it for an hour before turning smooth and round in the drill with P600.

once it proves itself to work - even once, it goes into the next redesign.

Taffy
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FE501e 2001-2003 Performance Jetting Kit-mk-3-special-1.75-tip-close.jpg  
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August 1st, 2020, 11:20 PM   #13
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Joined: Nov 2001
From: Ely, England

Posts: 16,099
Thanks: 508

I Ride: Husaberg FE501e 2003
Well that thickened tip wasn't needed in the end.....

Those who have had the bergbooster kits will know that the needle chosen needed to be in clip SEVEN, yup SEVEN!

I have been having three additional clip grooves added but everything has to start somewhere! when I was out testing one day it dawned on me that I needed the needle lifted higher than clip 4 so I looked around for anything on the;
bike I could use - nothing!
myself - nothing!
among my sparten tools and rucksack....not a sausage!

so all i could do in the end was 'eat the box that feeds you'!

regards

Taffy
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FE501e 2001-2003 Performance Jetting Kit-raising-needle-cardboard.jpg  
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