Thread: 12ft Tunnel Build

  1. #391
    Administrator Ron Hill's Avatar
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    Default Looks Like A Nice Place to Race

    FREE PROP WENT OUT TODAY: 10 1/2 X 19 three blade cleaver with a 116 Tohatsu hub kit.
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    Team Member ice_spy's Avatar
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    Ecstatic with this new prop thanks Ron, bad weather here has put test and tune days further away, however will be reporting back soon with a new jet combo and see how this little beast of prop is going to perform. looks faster than my TH clever just by looking at it. lol
    The race never stops

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    Team Member ice_spy's Avatar
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    Today i solved the problem of the motor cutting out at WOT top end. I put a new battery in it.
    First test with the RH 19px 10.5 over hub clever i reached 65.4mph or 105kph. This is with rich carbs, detuned timing and a few other little things i was playing with trying to find the problem. revs were 6900rpm. I believe i will spin this prop to 7k no problem once this fine tuning is done. Maybe more.
    The prop has great acceleration, not much slip and turns smooth. It also has a lot of bow and stern lift. A great little prop that im looking forward to testing further with. Thanks Ron, your props are awesome straight out of the box. Do you ballance them from factory ? I was thinking to thin it slightly and check balancing, but if its already ballanced i wont bother. cheers.
    The race never stops

  4. #394
    Administrator Ron Hill's Avatar
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    Default Ron and Chad Hill Make Signature Propellers, Own Hill Marine

    We are the factory, we made 7,000 propellers last year.

    I have never been a fan of thin propellers, because a thin prop will "Lay Back" or "Toss an Ear". I used to know how thick I could make a prop, or they would break. I had a "BOOK" for each class. A lot of work to make a good prop, thinning a prop was always my last resort.

    I've won lots of races with thick props. I have also won many a race when the prop blades aren't the same.

    I won the 1970, D Runabout Nationals with a prop that was 9 pitch on one blade and 13 on the other.

    It vibrated a bit, but it was in balance.

    My dad most the prop pounding when I races, on two bladers, he called it "Sitting" one a head of the other. Mad the prop shift coming off the turns.

    My dad used to balance everything! He'd rub lipstick on my props and have me make a run. Then, he'd hammer on my prop. He used to call it "Spooning" a prop.

    Later, when everyone called it a "CUP", so did my dad. But in 1949, my dad "Spooned" props for my brother to win the A Hydro Hearst Regatta!
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    My humble opinion. Bit of advise -- NEVER, I mean NEVER tell a prop god how to improve one of his propellers!! I made the mistake of doing this to Don Henrich, once and only once, he would'nt speak to me for a year. No kidding. Hi Ron.

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    Administrator Ron Hill's Avatar
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    Default 1970 Beloit Nationals

    Quote Originally Posted by NERSTROM View Post
    My humble opinion. Bit of advise -- NEVER, I mean NEVER tell a prop god how to improve one of his propellers!! I made the mistake of doing this to Don Henrich, once and only once, he would'nt speak to me for a year. No kidding. Hi Ron.
    I had won the Nationals and on Monday I went to Waukegan to pick up the twin engine Jones I was to race at the ELSINORE 500.

    I had brought my boat on the roof of my station wagon, brough 5 gallons of gas, and two props. My good "Hill" and my number 2, was a Grandpa Seebold.

    When I got to the plant, I think Don Henrich's shop was where the boats were stored. I ask Don to measure my props. I gave him the Seebold first. He said that was a pretty good prop, about 11 1/2 pitch.

    Then I gave him the prop I had won the Nationals with. Don said, "Wow this thing is way off, one blade is a 9 and the other is a 13. I could fix this one." I said you get near that prop with a hammer you will be a dead man, as that is the prop I won with, yesterday!

    I learned a long time ago no to get made at people who had my props. I had the money in my pocket. If they had ideas, they could work on them.

  7. #397
    Team Member ice_spy's Avatar
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    Ron it shows in your craftsmanship. Great advice thank you.
    I always like sticking up for your props when people tell me get a merc prop and you'll go faster.. funny thing is yours out of the box perform very well and are very fast imo. thinned props i agree are asking for trouble. A prop i ran was bent tips and chunks missing... a prop that was fast handed around for testing on many boats, and when i said you should get it repaired he said the same thing.. its fast as it is, and i won the titles with it last year in this condition so im not touching it. lol.
    The race never stops

  8. #398
    Team Member zul8tr's Avatar
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    Quote Originally Posted by Ron Hill View Post
    I had won the Nationals and on Monday I went to Waukegan to pick up the twin engine Jones I was to race at the ELSINORE 500.

    I had brought my boat on the roof of my station wagon, brough 5 gallons of gas, and two props. My good "Hill" and my number 2, was a Grandpa Seebold.

    When I got to the plant, I think Don Henrich's shop was where the boats were stored. I ask Don to measure my props. I gave him the Seebold first. He said that was a pretty good prop, about 11 1/2 pitch.

    Then I gave him the prop I had won the Nationals with. Don said, "Wow this thing is way off, one blade is a 9 and the other is a 13. I could fix this one." I said you get near that prop with a hammer you will be a dead man, as that is the prop I won with, yesterday!

    I learned a long time ago no to get made at people who had my props. I had the money in my pocket. If they had ideas, they could work on them.
    Ron

    So what is the theory of different pitch on each blade?.
    " Three may keep a secret if two of them are dead" Ben Franklin

    Location: SW Orlando, Fl

  9. #399
    Administrator Ron Hill's Avatar
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    Default More Pitch, More Speed, Sort of....

    Quote Originally Posted by zul8tr View Post
    Ron

    So what is the theory of different pitch on each blade?.
    The theory is simple, you take a big prop, and keep beating the blades small until the prop goes fast.

    My dad believed, as I think some in Seattle still believe, that if you make one blade small enough, the prop will keep "Cavitating" or "Slipping" in the corners (Allowing your engine to keep the RPM's up....and speed in the corner, also.

    Once you straighten out, the small blade kind of quits working, and the big pitch takes over. We called them "Shifter" props.

    Of course, when you are young and have four or five boats, and a dad who LOVES to see you win, working all day at the lake or at Salton Sea, was pure fun. Winning races was part of the fun......and we did ruin some props along the way!

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    Team Member zul8tr's Avatar
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    Ron.
    Very interesting concept never knew that till now.

    Not quite the same but this helped - when I was using 1:1 gears in the 20H with 2 blade props (circa 1970's) I would try different spline engagements of the drive shaft into the power head to change the diving blade position of the 2 blade prop relative to the piston position on the power stroke. This put the best position of the diving thrusting blade into the water/air mix and the other lifting blade out into more air less water, like slapping the water at the right position with one blade. There were noticeable improvements. Didn't work as good with 16:21 and/or 3 blades but did help some. Every little bit helped to win, even if just 50 rpm more.
    Pete
    " Three may keep a secret if two of them are dead" Ben Franklin

    Location: SW Orlando, Fl

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