Custom/Hybrid Matrix Talk

[OCD Solutions]

Gonna ride Tybee tomorrow and try out some more changes. I pulled the pump today and shimmed the Impeller out 2.5mm. I also added a few more degrees of up trim and enlarged my d-cut a bit. Hopefully I can find some slide in my changes.

I also built up a spare OEM pump with a WSM shaft, stock cone and an 11/17 Hooker but will need to install a second fitting for dual cooling before I can think of swapping it in.

ScottS just finished building up a ported 61X/62T engine and will be running it tomorrow in his Matrix so it will be interesting to see how the hull handles with a smaller powerplant.

 

[OCD Solutions]

I rode it yesterday with the changes and was very, very pleased and amazed at the same time. I was pleased by how much affect a few degrees of up trim made and amazed at how much of a difference a 2.5mm shim made to the pump.

I started with about 11 deg of uptrim, (6 more than previous) and spent the first session riding around trying to keep the nose down and the pump hooked. On the bright side, it was very loose and turned on a dime but very uncontrollable and I kept getting stuck in tailstands. I took about 3 deg out and it brought the nose down to a very acceptable level and enjoyed the ride for the rest of the day slashing what little surf we had.

It is truly amazing how much of a difference a single shim can make in a pump. ScottS couldn't feel it but I sure could. Some call it lag, others call it slippage but either way it's not nearly as good as it was so i will be taking the shim back out and hoping that I made enough improvement with the trim alone. If not I will start hacking at my rideplate and enlarging my D-cut some more.

ScottS had his Matrix out with a nicely ported 701 installed until he can get his SS865 repaired and I have to say I was pretty impressed with it as well. He didn't have it quite dialed in yet and lost some bottom end when he swapped out the EPIC for an enhancer but it is a good solid setup that is perfect for the small surf we had that day. My SS865 actually seemed like a beast in the chop and it was all I could do to keep up with the boys after a 6 week hiatis from riding. Between surgery and sitting around for 6 weeks I lost any if not all the conditioning I had built up.

 

[Sdiddy]

testing your Matrix

Like I said last week bring them Matrix skis to Florida and I will test them with any set up. Matter of fact you could leave one of them here for a couple of weeks and I would test them over and over and over.

 

[OCD Solutions]

You should have jumped on Garrets like you originally planned, you could be rippin as soon as this weekend.

 

[Sdiddy]

I can wait

I am a buy it new kinda guy. I will have an engine built and wait for the pristine new hull and get it together and be happy I waited. Hope it is ready for hurricaine season. " IF YOU BUILD IT THEY WILL COME "

 

[badvinny]

Soon I get to join this Elite club, lol! Cant wait for it to arrive, Bobby and I talked yesterday, he was real helpful on the -2 chop, maybe in winter, I just wanna ride it since our season is so short. It is going to be soooo different than my Dasa FX1 but why have 2 ski's the same anyway! There's a new XS865, 46's w/boyesen, Epic ignition, and Powerfactor pipe sitting in my shop that may find its way into the Matrix if one of my bud's doesn't snatch it up first. I just have a lowly 140 12 vien to try too, it's what we run in most of the Hydrospace's so I'll probably try it too just to see!

 

[badvinny]

It's almost here, tracked it today in Winnipeg,MB. Should be here on tuesday I hope, work has had me jammed up for 2 weeks and I happen to have 4 days off planned at the lake next weekend! My timing couldnt be more perfect!:bananapowerslide:

 

[OCD Solutions]

This will be an exciting week for Matrix skis with 3 skis (2 new and 1 used) making their way into their owners hands very soon. One is ready to ride and the other 2 will be getting assembled over the next couple weeks.

The two new ones are both pro versions at -4" and I can't wait for the ride reports.:bananalama::bananajump::arms::cheer2::Banane01::Banane09:

 

[badvinny]

Isn't one of those PRO's coming to Canada also?

 

[OCD Solutions]

Isn't one of those PRO's coming to Canada also?

Not in this batch, Chris's pro should be done soon though.

Sent from my Droid so spelling mistakes courtesy of Android keyboard.

 

[tonkabrando]

Both pros are finally in mn! Dropped off for paint this morning!

 

[djkorn1]

Get em done!

 

[badvinny]

What fuel tank can I use in the matrix with a powerfactor pipe. Just looking at it I assume just a cart tank fits with a powerfactor (let alone in the matrix!). My 950 Dasa should be on its way soon and I'm sure its gonna be thirstier than the 760 that came out!

 

[OCD Solutions]

The engine bay is slightly wider than a Superjet so you should have the same if not slightly more options.

My SS865 drinks less fuel than my ported 760 with 38's did when ridden the same way. My wife putters around the surf with it now and burns almost as much fuel as I do. It may be more because the power wears me out sooner but I still find myself burning less fuel now than before.

 

[OCD Solutions]

After much procrastination, tuning and tweaking, I finally pulled my Mag pump and installed an OEM pump with an 11/17 Hooker to test out this weekend.

No TBM stuffer and only a stock cone so it may not be ideal but it is a good place to start. I also have a C75 14/19 to try in it eventually but so far I have been loving the Hooker in the surf so lets see if it performs as well in the OEM pump as it did in the Mag.

This change has been coming for a long time and is a bitter pill to swallow as I had to fight tooth and nail to get X-scream to reccomend the Mag over the oem pump with TBM stuffer. Everyone who has/had a mag (except Idok) says that they are a must have and they would never run without and I too was convinced of this until recently. If you race or ride flatwater then by all means, get a mag still but if you love to slash surf then I believe the mag is actually counter productive. We shorten our hulls to make them turn quicker and be more responsive to rider and steering input and then add so much traction with the pump that we can't.

Since ScottS has the identical hull and motor combo it has been quite easy to do side by side comparisons to reach this conclusion and we have exhausted all other avenues of tuning. Flat out, Scott's ski is more rideable, flickable and all around funner and easier to ride. I really don't want to give up all the traction, especially in the whitewater but if I can get my ski to handle like Scott's then it will be worth it I guess.

Looking forward, I see myself installing an 8-vane 140mm non setback pump and being very happy. Now, if only I knew where I could find one of those... :sneaky:

 

[SXR-FOREVER]

what size mag did you have? Running a stocker now with a 10-16 hooker and its pretty good, I just want as much "traction" as possible to do the backies..so was thinking about a mag. Maybe I'll let you experiment awhile longer first lol

 

[OCD Solutions]

I have a 144mm 12 vane setback and will have a much better idea tomorrow.

If you want traction then the Mag is for you, I just caution "be careful what you wish for."

Honestly you would never know that Scott and I have the exact same engine. The Mag is so much better at putting the power to the water that it feels like you have way more HP.

 

[Sanoman]

lt's lnteresting what you have said in your last couple of posts about the mag pumps.l've been tossing it around for a while,wondering which would be better for me.A mag or a tbm stuffer.But reading that a mag would be better for flatwater (where l spend most of my time) answers that question.But l also wonder if l got a stuffer,that it would be like a poor mans mag?

 

[OCD Solutions]

That is what I will be testing out in the next couple rides. I had the Mag with a 14/19 while Scott ran a 13/19 in an OEM pump with my old TBM stuffer. Since the Hookers have been working so well I decided to try the 11/17 without the TBM at all plus it will give one more baseline for comparison. Scott really doesn't believe the TBM makes that much of a difference so that is partially what we are hoping to compare tommorrow. What makes this little experiment so good is that we have spent a ton of time in the last 6 months making sure that every other aspect of our skis is the same. The last thing left is the pumps.

The 140mm 8-Vane pump I referenced earlier is currently residing in my wife's ski. A few months ago, I upgraded her stock pump with a 10/16 to an 8-vane 140mm non setback mag. The 14/19 pitch is a little steep for her engine but the hookup was greatly improved without a huge gain in traction if that makes any sense.?.? Basically her ski no longer has any hesitation when you grab the throttle but it still slides out when you want it to. I am not sure which plays more of a factor, the vane count and configuration or the setback option so I can see it getting swapped into my ski for a test run in the near future.

For what it's worth, Idok told me right from the beginning not to get the Mag for the exact same reasons I am coming up with here. Traction is not your friend if you like to slash waves.

I will surely miss the whitewater hookup though, that will be the biggest loss.

 

[Sanoman]

Appreciate your thoughts and opinion! Now get out there and have a ride report on my desk by 0400 hours!