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never get skunked again
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Post new topic   Reply to topic    Northwest Kiteboarding -> Gorge / Portland / Oregon Coast
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forrest

Since 21 Jun 2005
4330 Posts
Hood River
Hick

CGKA Member


PostTue Oct 07, 08 8:52 am     Reply with quote

I don't think you need cooling as it only runs for a few moments every 5 minutes.

I like the enclosure of the Grinch, keeps you from getting your fingers, cloths, and other limbs caught up in the moving parts.

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forrest

Since 21 Jun 2005
4330 Posts
Hood River
Hick

CGKA Member


PostTue Oct 07, 08 9:01 am     Reply with quote

I would say to spend decent money on the motor, and get something in the 11HP range with a decent, analog throttle. We have the 7hp floored most of the time.

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Hein

Since 08 Mar 2005
1314 Posts

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PostTue Oct 07, 08 9:13 am     Reply with quote

10 Hp, a hydrostat and a properly sized spool and your golden. Don't
dis(count) what you don't understand. Fluid drive is much better than
a friction clutch. Much longer life and predictability. Dudes,,, I designed
construction equipment. I know this shit.

That's not to say you can't cobble something together and get some
use out of it. But why not do it right and make something that really
works better? My guess is that will lead to being able to do more
tricks and ride a wider variety of terrain. And so it doesn't break down
when you are using it in a comp or selling tickets.

"Analog throttle" That's a good one. The engine should have a governor
so it responds to the load you put on it with the transmission.

Last edited by Hein on Tue Oct 07, 08 9:20 am; edited 1 time in total

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forrest

Since 21 Jun 2005
4330 Posts
Hood River
Hick

CGKA Member


PostTue Oct 07, 08 9:19 am     Reply with quote

Hein, thought you were coming down with your sk8 last night? You gotta come down and check this bad-boy out!

It's hard to justify $400 clutch (that's the price from Ebay) when you can get a friction one for $40. The Grinch has a friction clutch and it's super smooth already.

Do you think the difference will be that great? I think it would be worth it if you could load and pop raleys against it, but I think you just need more horse power to make that happen. Right now, you can edge and slow down quite a bit, instead of speeding up.

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chanson

Since 31 Jan 2006
1874 Posts
WISCONSIN
Chimey



PostTue Oct 07, 08 9:20 am     Reply with quote

I am in favor of the idea of having a winch here in Portland for sure..
Like forrest said that fountain by Gene(Mario)'s house woudl be sick..!
among so many other places...

But, like Gene(Luigi) said, we need to see who would be wanting to use it, and more importantly, help pay for it.

Building seems like it can be done, but I can only assist as I don't have too many skillz in that department.

-I'll build some P-town sliders though Wink

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Hein

Since 08 Mar 2005
1314 Posts

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PostTue Oct 07, 08 9:26 am     Reply with quote

I'd bet that anyone in the winch selling business is looking at hydrostats.
Grinch included. It will be in next year's product line.

Hands down better performance. No doubt about it.

Just go find a used garden tractor with a variable speed drive.

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Kataku2k3

Since 14 Aug 2005
3754 Posts
PDX-LA
Videographer



PostTue Oct 07, 08 9:30 am     Reply with quote

One of these clutches won't slip...


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Kataku2k3

Since 14 Aug 2005
3754 Posts
PDX-LA
Videographer



PostTue Oct 07, 08 9:43 am     Reply with quote

Haven't had one warp daily driving or launching 2500lbs cars off the line with a 1000whp! Very Happy

EDIT: Damn you are fast at pulling posts, Hein! Thumb's Up

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genek

Since 21 Jul 2006
2165 Posts
East Po
KGB



PostTue Oct 07, 08 9:49 am     Reply with quote

Hein's post pulling is LEGIT fo sho!!!
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pacifichigh

Since 11 May 2005
1004 Posts
ATX
Texan



PostTue Oct 07, 08 10:30 am     Reply with quote

http://360wakeboard.com/board/viewtopic.php?t=10058

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forrest

Since 21 Jun 2005
4330 Posts
Hood River
Hick

CGKA Member


PostTue Oct 07, 08 10:37 am     Reply with quote

Hein wrote:
"Analog throttle" That's a good one. The engine should have a governor so it responds to the load you put on it with the transmission.


Yea, I understand how it works with the gov. We have the gov all the way out, and just barely getting the speed we want. With a more powerful engine, you'll be able to control the rider's speed better... Analog, rather than what we have now, which is full throttle or off...

We want to hit the slider a tad slower, and hit the kicker way faster. Problem is if you back off the throttle any for the slider, it's hard to get the rider back up to speed for the kicker.

I guess my opinion is that it has less to do with the clutch and more to do with horse power. Obviously, a bigger engine needs a better clutch.

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Hein

Since 08 Mar 2005
1314 Posts

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PostTue Oct 07, 08 11:02 am     Reply with quote

Exactly why a hydrostatic will work better.
It lets you run the engine at it's peak power
and then control the tow speed with the
variable transmission. It's got a lever on it.

If you use a clutch you need to either vary
engine speed or let the clutch slip. Neither is
efficient and puts undue strain on the engine.

You may still want a clutch to engage/disengage
the spool but it doesn't need to be that large
because it will always be fully engaged when
towing. I am sure some hydrostatics have a
bypass valve the allows the output to freewheel.
The clutch is just an added level of safety.

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forrest

Since 21 Jun 2005
4330 Posts
Hood River
Hick

CGKA Member


PostTue Oct 07, 08 11:08 am     Reply with quote

Oh, that makes sense, I didn't understand how it worked... Yea, that would be sick! You buying Hein? Razz

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Hein

Since 08 Mar 2005
1314 Posts

Possessed



PostTue Oct 07, 08 11:25 am     Reply with quote

I'll design it and make up a full set of plans.
Need somebody(s) to spring for components. I'd say $1500 give or take.
And a fab/assembly guy.
And a marketer if that's the way the project goes.

Then you'll need a curved slider with a nice booter at then end.

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genek

Since 21 Jul 2006
2165 Posts
East Po
KGB



PostTue Oct 07, 08 11:36 am     Reply with quote

We can fab/assemble it. I'm guessing raising the funds will be the hardest part. Maybe it would help if project lead would be willing to chip in as well...
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Last edited by genek on Tue Oct 07, 08 11:45 am; edited 1 time in total

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wakeup

Since 11 Sep 2005
328 Posts
always
Obsessed



PostTue Oct 07, 08 11:38 am     Reply with quote

the governer on the grinch is not even close to all the way out
i would say it is running around 75%

i backed it off a few turns on sunday and it was considerably faster, at least 1 or 2 mph faster
too fast for a 20 foot slider(too short) but better for the kicker(able to go bigger)

i screwed it back in cause some people thought that the original setting was too fast

we'll crank it up some more once we get the other 20 footer in place

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genek

Since 21 Jul 2006
2165 Posts
East Po
KGB



PostTue Oct 07, 08 11:44 am     Reply with quote

What about spacing the kicker and slider further apart so you have more time to speed back up?
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Post new topic   Reply to topic    Northwest Kiteboarding -> Gorge / Portland / Oregon Coast All times are GMT - 8 Hours
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