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Originally posted by dholt
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Ok then ..... We need to make sure everyone does it correctly. That would be my concern.sigpic
Dean F. Hobart
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As an inspector, I'll need a tool to measure this new rule. Is the SORC going to provide this tool for me? How about some tools to measure all the other rules, tuck, set-back, etc... Looks like the line to inspection just got longer! Really disappointed with the addition of this new rule. Seems to me there were better options. In my mind, in order for this rule to be successful why not allow the hole to be drilled any size? Whatever works. Chamfer it any way needed. If the rule is meant to cool the motor only, then why not?
Joe Silvestri
CSH/500MH
Dominic Silvestri
JH/JRComment
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Your comments here are spot on but history has always shown that there are those on the stock commission that get elected every year that make a simple issue become a monster that creates the issue you speak of here in your post. then there is the commissioners that are elected sent to the meeting who choose to obstain rather than vote, if they are not going to vote on the issues they should stay home! When there is no inspectors left that are willing to do all the crazy measurements that mean nothing but were made into a rule by these guys then maybe they will get the message but don't hold your breath it has not changed in 50 years I have been around. There are other options where common sense prevails it is call NBRA !!!!
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Don't forget, there was a max diameter rule in place for this hole already. And I never saw it inspected on me in the past 16 years. Not to say it shouldn't have been checked. Only difference now is the diameter is bigger.
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Dana,Originally posted by dholt View Post
Good point..... Hopefully it will continue to not be inspected. The main point now is that everyone's motor should be able to get cooling at the height legal limit.sigpic
Dean F. Hobart
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DOC.............look on page 11 of the attached agenda from the National Meeting that was posted on Hydroracer prior to the national meeting.. The language was amended to include all model Yamato engines and i am sure the SORC is modifying it to beef up the specs?? I think you were at Muscle Beach in Santa Monica while the rest of us were in the meeting.....Originally posted by Hydro doc View Post
))) LA Agenda.pdf
Last edited by Matt Dagostino; 02-12-2017, 01:22 PM.
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For the 300 class, I would suggest that the motors be sent back to the certified motor builders for the tower work. This way they are all the same just like the rest of the motor.
The towers WILL be inspected at ALL races I'm inspector at! As my mentor would say "bring some tool to inspection"!Joe Silvestri
CSH/500MH
Dominic Silvestri
JH/JRComment
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Has a decision been made on drilling 300ssH motors yet?
We have seen a few get warm in or Region, and it would be helpful for the class to keep them all ~30-40 degrees cooler, while allowing the motor to be used more competitively in 20 and C.
We haven't seen them get cooked, but definitely warmer than you'd like to see for maximum life. Since you can't simply replace rings in a sealed motor youself, it would help keep overall costs down if the motors were kept cooler.
I understand it may be a challenge to drill, but TJ can drill all new 300ssH motors and drilling instructions are going to be provided for everyone to use.
- MikeComment
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I am really appreciative of the SORC taking action to help cool the 300 series motors. Thank you.
At first I was very disappointed that we never did push the grey-area of the max measurement of the intake hole, but I remember the team making a conscience decision to not to push to the max dimension because of the verbiage of not allowing anyone to alter the intake; the SORC's action, at the very least, clears this up.
About the drilling to the 291 max and the 310 max on the intakes, data given to the SORC showed that there was a decrease by 9 degrees with the chamfering and 11 with out the chamfering when compared to the stock .260 at 3/4". No question, over-sizing the intake allows the water-cooled motor to get water.
Interesting observation when testing a week ago: Laps 1/2/3 I would run my large 1.25 course and then laps 3/4/5 I would run a tighter .7/.8 mile course. With the big course, I would get to about 400 degrees and was still rising; on the smaller course, the motor temp came down and never got above 340 degrees. I previously made a comment that I thought the size of the course made a difference, and I'm not sure it is the size of the course as much as the slip of the propeller on the smaller courses that allow the stock pickup to grab the water.
Again, I want to personally thank the SORC for taking action, I am very appreciated something was done, not nothing, and look forward to race season.
Patiently waiting on the full rule on the pick-up drilling...Comment
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Well, as the old adage goes, you have to finish a race to have a chance to win a race. With the Region 10 schedule soon to come out, it is very likely that we will have only one/two courses that will be under a mile. All or which will have full fields and he water that comes with it. Our first race will be a 1 2/3 and I'll probably run at an inch deep so I can make all three laps, even with the extra 10 degrees of cooling once we drill out the intake. With these large courses, your efficientcy of you blades really never fall below 89/88/87%, especially on the very large courses. It seems that additional slip, which automatically occurs on a smaller course when your boat settles down is what is needed to really cool you engine. This reasoning is why there's a large west vs. everyone else in the discussion of cooling the engines, its seems it's directly related to the size and shape of course Region 10 often races.
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Very good review of the long course problems relation to cooling. Most of us here in the Mid West never race over .8 mile and you would not see a heat gauge in our boats. Starting skills is at a premium, because avaible water and wind dictate our courses.Comment
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