Crank clearance.

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10 inch Terror
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Hi all, according to Sticky's book there should be a minimum of 0.5mm between the crank and drive side plate. I've pulled the crank as far through as I dare and I have 0.75mm of play between it and the plate. In the book it doesn't give an acceptable upper limit. Is 0.75mm too much or will it be ok? Thanks in advance Pete.
fairspares
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my tuned engines are set up with 1mm clearance using crank shims , very rarely ever built an engine and found with no shims its much over 1mm.
Fairspares Lambretta workshop.
10 inch Terror
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So it'll be ok then?
fairspares
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yes spot on , just make sure you have min 0.5mm mag side . you will find mag gaskets come in various thicknesses so you can get the correct clearance also.
Fairspares Lambretta workshop.
Spanish Fly
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10 inch Terror wrote:Hi all, according to Sticky's book there should be a minimum of 0.5mm between the crank and drive side plate. I've pulled the crank as far through as I dare and I have 0.75mm of play between it and the plate. In the book it doesn't give an acceptable upper limit. Is 0.75mm too much or will it be ok? Thanks in advance Pete.
Shouldn't you be using imperial units now? :lol:
10 inch Terror
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Posts: 1447
Joined: Tue Jun 29, 2010 9:17 pm
Xbox live gamer tag: No.
Playstation gamer tag: PLEASE!
Main scooter: Lambretta LI Imola 185
Location: Farnborough Hampshire
Contact:

Spanish Fly wrote:
10 inch Terror wrote:Hi all, according to Sticky's book there should be a minimum of 0.5mm between the crank and drive side plate. I've pulled the crank as far through as I dare and I have 0.75mm of play between it and the plate. In the book it doesn't give an acceptable upper limit. Is 0.75mm too much or will it be ok? Thanks in advance Pete.
Shouldn't you be using imperial units now? :lol:
Oh bugger! I didn't think of that, I want back in now! :D
10 inch Terror
registered user
Posts: 1447
Joined: Tue Jun 29, 2010 9:17 pm
Xbox live gamer tag: No.
Playstation gamer tag: PLEASE!
Main scooter: Lambretta LI Imola 185
Location: Farnborough Hampshire
Contact:

fairspares wrote:yes spot on , just make sure you have min 0.5mm mag side . you will find mag gaskets come in various thicknesses so you can get the correct clearance also.
Cheers mate.
Spanish Fly
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Posts: 198
Joined: Tue Nov 30, 2010 1:23 pm
Main scooter: P200e
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10 inch Terror wrote:
Spanish Fly wrote:
10 inch Terror wrote:Hi all, according to Sticky's book there should be a minimum of 0.5mm between the crank and drive side plate. I've pulled the crank as far through as I dare and I have 0.75mm of play between it and the plate. In the book it doesn't give an acceptable upper limit. Is 0.75mm too much or will it be ok? Thanks in advance Pete.
Shouldn't you be using imperial units now? :lol:
Oh bugger! I didn't think of that, I want back in now! :D
Good answer. :lol:
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