The technical adventures of Dr_C
- Thread starter Dr_C
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Joined Jun 2007
4K Posts | 1K+
south east WA Australia
Joined Oct 2003
955 Posts | 1K+
Sweden
I paid extra to get mine "prefilled"!nice Dr_C!
sexy liquid filled gauge.. mine kind of looked like that when i got back from riding through a swamp
Joined May 2010
592 Posts | 247+
San Francisco, California
Joined Jun 2007
4K Posts | 1K+
south east WA Australia
Joined Oct 2003
955 Posts | 1K+
Sweden
I'm sure it was him, all right! ;-)maybe it was the bloke on the left in the team photo .. he looks shifty
Got some nice info here during my vacation in Crete. The lifters are now coated with DLC and will post back today! So coming home on Friday, assembling the last bits on Saturday and maybe practise on Sunday! ☺ Difficult sitting here by the pool saying "Gin and tonic" all the time...
Joined Oct 2003
955 Posts | 1K+
Sweden
I'm ensuring that the cams and the crank are not swallowing all the oil, leaving nothing to the piston squirt. Making a nozzle for the cams out of a M3 stop screw with a 0,6 mm hole. Drlling in steel with a 0,6 mm drill has to be done in the same manner as when hedgehogs have *** - very careful!
Joined Oct 2003
955 Posts | 1K+
Sweden
Spanner, my old 82mm stroke cranks had this bolted nozzle with a 0,5 mm hole. This crank had 0,6 mm nozzle in the big end pin and 0,5-0,6 mm for the CB bearing squirt. The new nozzle, in the end of the crank, is 0,6 mm. The piston squirt nozzle is 0,8 mm big, so I guess with 1-1,5 bars pressure there will be quite good cooling provided!
After 3 days of intense work the bike is finally ready for race! Oil pressure is finally ok (Thanks for the input, Bushie), and also the biggest challenge (stopping water from entering the oil) is solved. Dodgy o-rings on the liner, finally turned out to be the culprits.
Joined Nov 2001
17K Posts | 774+
Ely, England
Husaberg went to a 3mm oil feed hole in 2003 Mats. so it was going up to the head and into the end of the crank. later in 04 just the crank and then in 2005 the crank and under the piston.
I think the reason for the 2003 change was because there was always some cack in the eye so they just let it block the big end instead!
no surefire idea though....
taffy
I think the reason for the 2003 change was because there was always some cack in the eye so they just let it block the big end instead!
no surefire idea though....
taffy
Joined Sep 2007
782 Posts | 291+
???
My 2005 had no restriction at the end of the crank, 6mm hole.
There is a small 0.6mm? hole where the oil exits the crank pin.
Trying to understand why you have two restrictions in series Dr C?
Nice roads there Dr C I bet you wish you had the RST bike with you
There is a small 0.6mm? hole where the oil exits the crank pin.
Trying to understand why you have two restrictions in series Dr C?
Nice roads there Dr C I bet you wish you had the RST bike with you
Joined Oct 2003
955 Posts | 1K+
Sweden
Spanner,My 2005 had no restriction at the end of the crank, 6mm hole.
There is a small 0.6mm? hole where the oil exits the crank pin.
Trying to understand why you have two restrictions in series Dr C?
Nice roads there Dr C I bet you wish you had the RST bike with you
Long explanation really...
Old crank "resistance": 0,5mm entering the end of the crank
"New" crank "resistance": 0,6mm entering the crank pin AND 0,7mm CB bearing squirt in parallel with each other.
With this change the pressure drop of the new crank will be less than half of the old crank. Practically, the new crank will steal more oil from the rest of the consumers (head and piston). I wanted to make sure the pressure comes up again to ensure a working piston cooling. The roller bearing in the big end only requires very little oil, so I tried the 0,6 mm restriction and the end of the crank, to restore distribution to what it was with the old crank. It would have been better to reduce the nozzle for the CB bearing, but that is more tricky to do...
Oh, yes! Those roads were fantastic! I didn't miss my RST bike though. If the temperature would have been 10 degC lower, I sure would have missed my leathers! THEN perhaps also an RST bike... ;-)
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