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Rear cylinder to crankcase bolts MC21, tightening advice


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Max
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Rear cylinder to crankcase bolts MC21, tightening advice

Thu Feb 20, 2020 9:19 pm » Post: #1 » Download Post

Hi
Thanks in advance for looking in at my question.

I'm working on the rear cylinder of my MC21, specifically the cylinder to crankcase bolts.
The front right nut is kind of covered by the RC valve casting on the cylinder ...no problem to release the nut but does anyone have any advice for getting the correct torque setting on rebuild? (I'm guessing a 12mm crow foot on my torque wrench but any advice welcome 👍)

Cheers
Max
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paul g
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Thu Feb 20, 2020 10:48 pm » Post: #2 » Download Post

I would say a crows foot with the crows foot at 90 degrees or the appropriate recalculated torque value is the ideal way to go.

I have been meaning to buy myself a crows foot for this but I just use a ring spanner and calibrate my arm to the other 3 torqued nuts Very Happy And before you take the piss Andy I have a HRC video with 2 HRC technicians building a MC18 F3 bike who use this exact same technique Razz
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Max
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Fri Feb 21, 2020 7:06 am » Post: #3 » Download Post

Cheers Paul...The idea of recalibrating your arm made me smile, but you are right of course, we all do it all the time on the less important stuff!!

Be interesting to know how far out you are by running a test on a std 12mm somewhere else on the bike...maybe we all should, the closest one gets the job when any of us need to rebuild! Smile

It's difficult enough getting a spanner in there in the first place, be interesting to see if I can get a crows foot in, level and torqued...bleeding knuckles coming up!

Laughing
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Andy
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Fri Feb 21, 2020 4:53 pm » Post: #4 » Download Post

paul g wrote:
I have been meaning to buy myself a crows foot for this but I just use a ring spanner and calibrate my arm to the other 3 torqued nuts Very Happy And before you take the piss Andy I have a HRC video with 2 HRC technicians building a MC18 F3 bike who use this exact same technique Razz

Would I?! ROTFLMAO

There's nothing wrong with my Torque-Wrist™, or Verni-Eye™ come to that! Very Happy
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