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'm afraid it would go the other way, as the only audience with those preferences is you! ;-)Excellent Dr C thanks !
Have you considered introducing cross dressing into your tech videos by popular request ? It could possibly broaden your audience quite a bit
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. Of disaster?
Joined Oct 2003
955 Posts | 1K+
Sweden
The latest "disaster" I mastered (!) even made the big end needles stamp marks in the big end pin. I thought I had yet another pin on the shelves somewhere, but no. So I had another two pieces fabricated. The new alu parts are finally up in the CNC-machine, so there is hope for some workshop therapy during the Christmas holidays!
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Joined Aug 2009
1K Posts | 346+
Charters Towers, Australia
Joined Oct 2003
955 Posts | 1K+
Sweden
I was more thorough this time with cleaning and grinding before welding. Hopefully the welds do not look, too much, like a birds crap...
Afterwards the casings were aged 24h at 100degC in the oven, spreading a "popular" scent of racing in the kitchen.
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Afterwards the casings were aged 24h at 100degC in the oven, spreading a "popular" scent of racing in the kitchen.
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Joined Oct 2003
955 Posts | 1K+
Sweden
Not quite. The CB housings are welded onto the crank cases. Now they are at the machinist to get the final touch to bearing seats and sealing surfaces. After positioning, welding, ageing, the material moves around a bit. As the tolerances are of the essence, I have left about 0,5mm for the final machining on critical surfaces. Also the cover remains to be machined.
THEN, it's a matter of assembly! [emoji4]
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Hi guy's,
My concern wont be the casing tolerances , but the counter shaft diameter , thinking about the force created by the outer masse at the max revs makes me worry a bit , may the shaft be hard enough not to bend , but you know what , we will see
anyhow ,this is an vey nice job
.
My concern wont be the casing tolerances , but the counter shaft diameter , thinking about the force created by the outer masse at the max revs makes me worry a bit , may the shaft be hard enough not to bend , but you know what , we will see
anyhow ,this is an vey nice job
.
Last edited:
Joined Oct 2003
955 Posts | 1K+
Sweden
Hi guy's,
My concern wont be the casing tolerances , but the counter shaft diameter , thinking about the force created by the outer masse at the max revs makes me worry a bit , may the shaft be hard enough not to bend , but you know what , we will see
anyhow ,this is an vey nice job
.
Thanks!
Simulations of the previous CB design showed the radial bending at 9000rpm to be 0,22mm. This time I have added 2mm on the shaft diameter. Radial clearance is appr. 1,0mm between CB and crankshaft. There was no problem with this in the last attempt.
Fingers crossed, please!
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