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WILSON

Joined: 17 Jun 2005 Posts: 352 Location: Mexico City
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Posted: Tue Jul 18, 2006 3:59 pm Post subject: |
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The UIM rule says "Manufacturer" because we wanted to have the possibility in the future to allow other jet drive systems, such as Yamaha, Bombardier, or others. Also, there was a commercial issue with using the Mercury name in the UIM Rulebook.
At the moment, only Mercury makes a commercial jet drive in the 240 HP range.
It is understood that "the manufacturer" is whoever makes the jet drive. Only parts available form the same company are legal. If the jet drive is Mercury brand, only original parts from Mercury are legal for the class.
I know there are a lot of "ifs" and "buts" in this class rules, but the spirit is to keep the jet drives (engine and pump) as standard and modification free as possible. _________________ Wisdom chases me, but I´m faster |
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Firefish

Joined: 19 Jul 2006 Posts: 27
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Posted: Wed Jul 19, 2006 10:32 pm Post subject: wearring |
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I sleeved my wearing with uhmw (teflon) and it only lasted about 10 hours! First 3 times i chewed a little gravel it was done. The thing that really worry me is once you smash a few rocks through it the uhmw gets smeared across the water ports and then your motor is over heating. I preffer the S.S wearing and will continue to do it that way. I agree you can bring your clearance way down, in fact i think i took mine down to about .005". Very impressive just had no peace of mind. |
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allblowdup

Joined: 20 Jun 2005 Posts: 135 Location: Grande Prairie
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Posted: Thu Jul 20, 2006 9:37 am Post subject: |
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UHMW is NOT Teflon and there are about 10 different types of UHMW. If you used Teflon the it would not work very well and it would mush over the holes. We have not seen one of ours have any of these issues. |
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YKX

Joined: 21 Jul 2005 Posts: 181 Location: Yellowknife
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Posted: Thu Jul 20, 2006 4:16 pm Post subject: responses |
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Shallowman,
What do you have to say about Firefish's story?????
YKX |
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shallowman
Joined: 03 Apr 2006 Posts: 199
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Posted: Thu Jul 20, 2006 10:18 pm Post subject: UHMW wear rings |
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I would be real interested to where you had that done as I hold the Patent on this product thats first chances are you start your boat out of water
I have made over 100 of these with not one EVER smearing the water holes shut Like the other fellow said there is about 10 different uhmws out there and if you use teflon that would just not work I stand behind my wear rings to that I will challenge you to a hour count you have a new stainless put in and I will use the one I have in my boat right now hat has on the hour meter 121 hrs on it and lets do a clearance test next fall the looser will have to come up with some cash and I mean lots of cash
as I have tested these for a period of 3 years before aplying for patent and to everyone that reads these I put my boat thru HELL and back
to make sure they stood up and I am running the same wear ring and if you like I will give out the name of the boat place to where I bought it and as they know because it never even left there shop before I put the plastic wear ring in it and it has not been changed
So the way I see it you must work for Mecury or for the people that build stainless wear rings another note is if you look at the impeller real close you will see that it only covers half the water holes so how could you ever possibly smeared all the holes shut I beleave thats impossible my friend
so I am up to a challange
so Let'er buck  |
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Skinnydipper

Joined: 30 Mar 2006 Posts: 159 Location: Morningside, Alberta
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Posted: Thu Jul 20, 2006 10:28 pm Post subject: |
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Shallowman:
How many impellers did you use in the 121 hours of wear ring time?
Firefish:
Show us the money ! _________________ 17' Firefish Frenzy, 200 opti, 8 degree rock chewin' bottom. Fishin' Extreme
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shallowman
Joined: 03 Apr 2006 Posts: 199
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Posted: Thu Jul 20, 2006 11:26 pm Post subject: impellers |
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That was a good question I went thru 3 impellers until I was happy with the wear ring performance
I would on purpose park in gravel or run it into a sandbar then just keep reving her until I was out or real stuck I pushed this boat out many times had to rebuild the impellers until the leading edge was so bad I would buy another and go again
The one thing I do know it was getting harder each time to find friends that would go with me and I still have the same wear ring as what I started with so now my friends go with me as I don't need to prove it any more
Let'er buck  |
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JR
Joined: 23 Jul 2005 Posts: 81
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Posted: Thu Jul 20, 2006 11:45 pm Post subject: Re: impellers |
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shallowman wrote: | That was a good question I went thru 3 impellers until I was happy with the wear ring performance
I would on purpose park in gravel or run it into a sandbar then just keep reving her until I was out or real stuck I pushed this boat out many times had to rebuild the impellers until the leading edge was so bad I would buy another and go again
The one thing I do know it was getting harder each time to find friends that would go with me and I still have the same wear ring as what I started with so now my friends go with me as I don't need to prove it any more
Let'er buck  |
WHen you built up your blades did you have to do the OD's.. Cheers JR |
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shallowman
Joined: 03 Apr 2006 Posts: 199
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Posted: Fri Jul 21, 2006 1:22 pm Post subject: impellers |
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Yes I had to build up the sides and the leading edge
I can rebuild back to factory or what ever you like on mine I have it enlarged 1/8 inche wider top end still the same but mid range is better with less revs
let,er buck  |
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mountainman
Joined: 15 Jan 2006 Posts: 131 Location: Grande Prairie, Alberta
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Posted: Fri Jul 21, 2006 5:18 pm Post subject: |
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Shallowman,
This has got me really interested. I am still fairly new to the jet boats and like what I am hearing.
Could you pm me a price and some contact info for a 240SJ.
I will be looking at doing this in the winter or early spring.
Wonder what it would do with a scott nozzle?
Joe |
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Firefish

Joined: 19 Jul 2006 Posts: 27
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Posted: Sat Jul 22, 2006 12:54 pm Post subject: |
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We might have to just get together and put fresh everything in our boats and have a show down.. More like a rock pumping contest! My hull should be done next week and i have buddies in the GP area, so I'd be more than happy to take a weekend for some boating. Just go have a little fun and maybe learn something new. So what type of boat do you have?
Have a good one,
Steve |
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Skinnydipper

Joined: 30 Mar 2006 Posts: 159 Location: Morningside, Alberta
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Posted: Sat Jul 22, 2006 3:37 pm Post subject: |
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Oh.........goodie...........I love show downs. We'll need pictures!
Sounds like the river of choice is going to see some serious stainless deposits ! _________________ 17' Firefish Frenzy, 200 opti, 8 degree rock chewin' bottom. Fishin' Extreme
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shallowman
Joined: 03 Apr 2006 Posts: 199
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Posted: Mon Jul 24, 2006 11:26 am Post subject: boating |
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I have a 16 foot habourcraft with plastic and a little 175 it has a 10 degree bottom and some of your buddies proably already run plastic wear rings where we would go will either be the Kakwa or to the upper wapiti falls we were there yesterday and we hit about 80 to 100 rocks the way up and down so the bottom of your boat will be beat to shit by the time we get back but the wear ring will not be and you impeller will have to be reworked but thats no big deal ask your buddies about the kakwa and see what they think
Let,er Buck Boys  |
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Firefish

Joined: 19 Jul 2006 Posts: 27
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Posted: Tue Jul 25, 2006 6:59 pm Post subject: |
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sounds like a plan.. I haven't been to wapitti lake in about 3 years. My boat just went on the jig today (A little 16' with a 240 sj). You don't know jay stojan up that way? |
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Xerophobic

Joined: 23 Jun 2005 Posts: 970 Location: Calgary Alberta, Canada
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Posted: Wed Jul 26, 2006 7:22 am Post subject: |
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Ill throw in my 2 cents here and it may be worth less than that!
Personally I'd like to see absolutely no mods available either strictly for the reason that the class I believe was intended to be a bare bones entry level class. It seems to me already we're seeing that one cannot run a 'family/recreational boat' in this class as there are alot of people making mods to the nozzles and such which you're discussing. This sport NEEDS a bare bones entry level CHEAP class to get new people involved. It was nice to see this class where one could literally run your weekend adventure boat in a race without doing squat to it. Now the safely issue and roll bars have somewhat skewed that and that much I can understand but if there are only 2-3-4 SJ's showing up to races in the cheapest "entry" level class in my view we have a problem. In area's of some Canadian races there are a TON of SJ's and they are not coming out to race. The less mod's that are allowed the cheaper the class and the more likely everyone has a chance and hopefully the more people that will show up. You cannot sacrifice safety issues, but you sure can limit people having an edge by doing some "minor" mod that gives them 2 mph over the guy who showed up with his stock boat looking to have fun and be involved in the sport. They will more than likely be the future A-B-C class owner/drivers and I think seeing the number of boats showing up to races we need to do everything in our power to draw them in.
I love the SJ class but it appears we're seeing more and more boats that appear nothing like a weekend pleasure boat and when they become a sole purpose race boat they often go out of people's budget as they may not be able to afford 2 boats.
Cheers _________________ T-53 , why go up and down when you wanna go round and round???? |
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