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Just check my signature for clarification on port and starboard, which I prefer to use here. Two potentially useful additional terms found on jet engine drawings: Aft looking forward, and forward looking aft, or ALF and FLA. For example, "Stage 3 low pressure turbine disk, forward looking aft." In the context of this forum, imagine a photo clearly marked "FLA" with text that said you should remove the port-side bolt first.
But what about the ferry I took from St. Michaels to Oxford this week? It goes back and forth without turning around....
Forgive me, the AC for the black car was not working.
Did a lot of sailing with my Dad and remember that it can get confusing remember where the boat should be (red right returning) and so on.
But Germans are common sense designers and you can bet that they consider that the crank cannot be turned from the driver's seat.
My old BMW motorcycle has a nice common sense Germanic feature when checking the oil level.
The cast alum dip stick handle thumb screws in to the CC make a oil tight seal
but when checking the oil level you are not supposed to take the measurement after it is screwed all the way in rather just as it lays loose on the crank case. Common sense and thought out. If done wrong, there is a big difference in oil level (low).
Guys with 30 years in with old Bimmer bikes don't realize this and do it wrong !
Astro was cool. Elroy was brilliant. Judy was HOT!
Originally Posted by Adk46
..... But what about the ferry I took from St. Michaels to Oxford this week? It goes back and forth without turning around....
Are there screws at both ends?
Wow, how we've digressed!
Originally Posted by Jerry Feather
That's interesting, James and likely very true; but I have to wonder if they cannot take stress what are they doing in the tensioner. In other words, what other kind of stress might they be subject to that they are not already under.
In case the nautical references didn't answer your question; in normal rotation the tensioner is fed slack. In reverse rotation, the tensioner takes full brunt of torque required to turn cams. Loading forces are completely different.
Also, on some systems, reverse turning could potentially cause slack that could allow belt to "jump cog".
George didn't have to worry because he merely pushed a button, he didn't actually turn anything. But that was at Spacely Sprockets. Things may have been different at Coswell Cogs.
05-16-2015, 10:47 PM
