Login

Camshaft Pitting or Debris

by Gerhard Schnecke in General Tech Discussion 10 years ago

Page 2 of 2

Start
Prev
1
2
Next
End

Re: Camshaft Pitting or Debris

by Gerhard Schnecke » 10 years ago

Gerhard Schnecke

3 6 0

Reverse the pictures please ;)

912.Koepfe.JPG (You do not have access to download this file.)

Report
Re: Camshaft Pitting or Debris

by bill martin » 10 years ago

bill martin

10 757 0

Gerhard,

Your mechanic is probably correct. I can't speak for rotax, but almost all cam lobes are ground with a slight taper which forces the lifter to rotate as it runs. It is a very slight lateral taper which you can't see without measuring instruments but it is there. Again, I can't speak for rotax, but the lifters are often not flat either. They are ground from the center outward to match that very slight taper in the lobe to improve rotation of the lifter. Sometimes you can see that one edge of the cam lobe is shinier than the other edge due to the extra pressure exerted off center to aid rotation. Because the other end of the lobe is constantly being wiped clean, this does make deposits more evident in the center of the lobe. Don't know what genius figured all this out, but it works.

Bill.

Thank you said by: Gerhard Schnecke

Report

Page 2 of 2

Start
Prev
1
2
Next
End

You do not have permissions to reply to this topic.

Related Topics

Title	Category	Replies
Timing marks on rotax 912 camshaft and crank.	912 / 914 Technical Questions	4
Fuel spitting out of air filters at full power	912 / 914 Technical Questions	24
582 Blue head with one spitting carb	2 Stroke Technical Questions	4

Top

© Rotax-Owner.com

Login