Dep this and post #3 tells pretty much everything.Any piston with an offset pin, offers a performance gain, when the offset is reversed. The rule is appropriate.
I (myself) just have a real 'problem' with rules that have NO/ZERO importance and only create question-in-meaning! This particular rule 'appears' as a tool for 'Dis-qualification Purposes Only'! It has no-more or less basis too it than if you were too mix 8mm hex headed bolts w/ 10mm hex headed bolts in your blower housing and pull starter. That's exactly how irrelevant/ignorant the rule appears! Rulebooks should be viewed w/ Repect...Not Distain!! (Sori....end!)
Okay lets continue this debate. I am sure jody or jerry do not have any question or concern for whether this rule has any merit or needs any explination.Flat, I am not agruing, rather debating, because many say an offset piston in these motors does not provide a performance gain. I am simply stating that it "has" to in order to have a rule against it. You stated above that it does provide gains, and I am inclined to believe you. I am debating with those that say there is no performance gain. I agree with the rule if there are performance gains. I don't agree if there are none, but because some may not agree does not mean we won't abide by it.
"The unfortunate thing is as you said what works for a 6 year old sometimes has to work for an adult as well." This is a statement of a follower, not a leader or innovator. I am sure that leaders in this industry of 4 cycle racing don’t take the 6 year old answer. Jerry and Jody build great parts for our motors. I can guaranty that they never take the 6 year old answer on anything race related.
When encountered with a problem or a challenge, I find that applying Lean and/or Six Sigma concepts help to find root cause or develop solid processes. One of these processes is called "the 5 why's". Ask at least 5 whys to get to the root cause or reasoning.
Here’s an example for you: The vehicle will not start. (the problem or opportunity)
1. Why? - The battery is dead. (first why)
2. Why? - The alternator is not functioning. (second why)
3. Why? - The alternator belt has broken. (third why)
4. Why? - The alternator belt was well beyond its useful service life and not replaced. (fourth why)
5. Why? - The vehicle was not maintained according to the recommended service schedule. (fifth why, a root cause)
So the reason the vehicle will not start is not because the battery is dead, it’s because the vehicle was not maintained properly.
I work in a world where I cannot accept “because I said so”. I have been raised to question processes. The answer, “because we’ve always done it that way” is never acceptable.
Thank you Bob....Therefore, if flipping the piston over create's MORE ware (while NOT increasing performance!!) the Importers and supplier Should love and embrace the idea...right? (Sori....I just had 2go there!)With the piston installed so the wrist pin is as close to the valves as possible, you create slightly more leverage to move the crankshaft 90 degrees into the power stroke due to the increased angle of the rod. This is a very slight increase, if any at all.
The same principle applies to angle boring the cylinder, with the top of the bore as far forward as possible and the bottom as far to the rear as possible. (that will probably open up a whole new can of worms )
Both will also slightly increase pressure between the front piston skirt and the cylinder wall, possibly increasing wear a little.
With the piston installed so the wrist pin is as close to the valves as possible, you create slightly more leverage to move the crankshaft 90 degrees into the power stroke due to the increased angle of the rod. This is a very slight increase, if any at all.
The same principle applies to angle boring the cylinder, with the top of the bore as far forward as possible and the bottom as far to the rear as possible. (that will probably open up a whole new can of worms )
Both will also slightly increase pressure between the front piston skirt and the cylinder wall, possibly increasing wear a little.
You would be amazed as to how out of square these blocks are.
Thank you Bob....Therefore, if flipping the piston over create's MORE ware (while NOT increasing performance!!) the Importers and supplier Should love and embrace the idea...right? (Sori....I just had 2go there!)
Enjoy'n the holidays w/ my G-son home on leave til thursday! Hpoe all's well w/you and yours too!!hi ya screamer!! hows things out cali way? hope you and your family had a great Christmas and hope that you have a very happy new year!!!