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MaxCatV1-L Scratch Build

Old 08-07-2008, 02:46 PM
  #201  
dannyual777
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Default RE: MaxCatV1-L Scratch Build


ORIGINAL: thevirginian

I agree with you 100%, Marcel. First the tape to hold the deck doen and then the toothpicks from the outside. I even would mix some milled fiberglass into the 30min epoxy to thicken it up a bit. The toothpick act like wooden nails. Very strong indeed.
I've got some experience buiding wood boats and I know that it is very difficult trying to get a large deck epoxied down before the epoxy starts to harden. In the warm Florida temps, 30 min epoxy has a working time of about 15 mins. I'm way too slow of a worker to have this large of a deck down in that amount of time.

With this in mind, I've got some NHP 3 hour epoxy that I bought from Aeromarine. I believe the package states that it gives 45 mins of working time. This is thick, adhesive epoxy that will sit on top of the ribs waiting for the deck to be put on. I know that you can use West Systems or any of a number of other epoxies with the appropriate hardener to slow things down, however, you may need to add that thickening agent as the virginian mentioned.

Part of the reason that I need more time is because I coat the inner side of the deck completely with epoxy to water and fuel proof it. I like to do this when I'm gluing the deck on rather than before the fact. I feel that I get a better bond, deck wood to rib wood and that as the epoxy cures, it cures in the curve and bends that the wood is taking.
Old 08-07-2008, 02:51 PM
  #202  
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Default RE: MaxCatV1-L Scratch Build

I only use 24hour epoxie, so I guess I don't have that problem..

Oh yes, you do get a better bond that way, or you have to sand the epoxie before applying the deck then it's ok also.
Epoxy doesn't really hard until a few days, so as long as you don't wait to long after epoxying the deck on the inside it won't be a problem.

Marcel
Old 08-08-2008, 04:47 PM
  #203  
91 nsx
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Default RE: MaxCatV1-L Scratch Build

Is there a kit ready for this build?Or I cant seem to down load plans can someone email them.Thanks
Old 08-08-2008, 09:04 PM
  #204  
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Default RE: MaxCatV1-L Scratch Build

91;
Go to page one and click on maxcat's link. You 'll get an AutoCad drawing compressed to zip. Download it and unzip it. Bingo!
Old 08-09-2008, 03:30 AM
  #205  
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Default RE: MaxCatV1-L Scratch Build

The download on page 1 should work fot the V1 drawings.
And there is a kit for sale at [link=http://www.rbckits.com/shop/index.php?act=viewProd&productId=393]RBCKits[/link], this is the V2 Cat...

Marcel
Old 08-12-2008, 09:40 PM
  #206  
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Default RE: MaxCatV1-L Scratch Build

Hello, One of my hard drives C: crashed the other day, so I had to reformat and install every thing. Not too much done on the cat build had to get the computer running, I did do some more sanding and put on another set of streaks and some fillets by them, here are a few more pictures.
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Old 08-13-2008, 12:57 AM
  #207  
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Default RE: MaxCatV1-L Scratch Build

Hi Harold,

You did it! Now I have to make the middle strake on my V2 cat also
How did you make those triangle shaped wood pieces for the strakes? Maybe you have an easy way.
I only did the outer ones on my V1 hull because I found it to be to much work. [maybe just lazy ]
I want them on the V2 cat, thinking of putting them on the small cat also, wich is being converted to nitro...

Marcel
Old 08-13-2008, 07:00 AM
  #208  
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Default RE: MaxCatV1-L Scratch Build

Hey, Marcel
You state your big cat is doing 58mph with the Zen260. I guess you are using a highly modded Zen, aren't you? A stock engine would not be able to reach that kinda speed. Only curious. I am planning of running a CC modded Zen in my cat once it is done.
Old 08-13-2008, 07:08 AM
  #209  
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Default RE: MaxCatV1-L Scratch Build

My Zenoah is modded, but not fully.
It's a mild mod zenoah with about 5,5HP, so about 1 more then stock.
The second MaxCat that is finished for trials has a stock zenoah and runs almost 53mph [85Km/h] with a 7016/2.
So even with stock zenoah speed is decent.

Marcel
Old 08-13-2008, 07:26 AM
  #210  
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Default RE: MaxCatV1-L Scratch Build

Hi Marcel, I have got a 10 inch band saw that I use to cut about every thing with, works vary good for cutting strake. Do you think I should not have put them fillets
on the side of the strake? I can sand them back off if I need to.
Harold
Old 08-13-2008, 07:27 AM
  #211  
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Default RE: MaxCatV1-L Scratch Build

Thats looking great!!
Old 08-13-2008, 07:38 AM
  #212  
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Default RE: MaxCatV1-L Scratch Build

Not really sure if the fillets will matter. I don't think the fillets will be a problem.
The edges of the strakes and ride pads will need to be as sharp as possible, but the fillets are to the bottom, so I guess it's ok.

To bad I don't have a band saw...will do it on my belt sander again, and this time try not to sand my finger tips
Old 08-13-2008, 08:35 AM
  #213  
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Default RE: MaxCatV1-L Scratch Build

Marcel;
I once built a wooden kajak and I bought a Ryobi 10" table saw for that task. I had to cut countless small strips (5mm) from 19mm thick cedar boards. I had to cut them in an angle, I had to cut them tapered, you name it. That saw still serves me well. I know I will be able to cut these small strakes with it. The saw was only $350.00 here in the states.
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Old 08-13-2008, 08:46 AM
  #214  
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Default RE: MaxCatV1-L Scratch Build

Wooow, very nice kajak!
I have a 10" table saw, but last time the long stringers came out uneven. But will try again.
Old 08-13-2008, 10:26 AM
  #215  
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Default RE: MaxCatV1-L Scratch Build

Hey Marcel, How do you think a 7016/3 will work on this cat? ALso I am thinking of a inline rudder or dual rudders, any comment on this?
Harold
Old 08-13-2008, 10:56 AM
  #216  
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Default RE: MaxCatV1-L Scratch Build

Harold,
If you plan on running a stock Zen 260 you might be better of with a 6516/3. I also consider a dual rudder for mine.
Old 08-13-2008, 10:59 AM
  #217  
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Default RE: MaxCatV1-L Scratch Build

Hi Harold,

I have a 7016/2, 7016/3 and used a MW3 from a friend, all 3 props work fine, although the 7016/3 is the hardest to run for the engine.
With some tuning of the setup it could be better but I usually don't have time for that.
It also depends on how much wind there is.
7016/2 run great under all conditions but won't give you any high top speeds
7016/3 runs good but likes a bit more wind [more lift from the cat], will give a bit more speed
MW3 run good all round but runs great when there is more wind, my personal record is made with this.
Btw, the cat likes wind

As for the rudders, use a single seperate rudder, gives the best results.
I use a speedmaster rudder, and MTC strut
Dual rudders only give more resistance, no need for dual rudder, and we almost make right turns only anyway.

Marcel
Old 08-13-2008, 11:50 AM
  #218  
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Default RE: MaxCatV1-L Scratch Build

A stock zenoah should be able to run a 7016/2 without a problem, the other MaxCat I mentioned above runs a 7016/2 without any problem and has a stock PUM260.
Old 08-20-2008, 09:41 AM
  #219  
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Default RE: MaxCatV1-L Scratch Build

Hello every one, I have been doing a lot of sanding, filling, and shaping with Micro balloons and resin. I have now got the build ready to cover the out side with one layer of 11/2 oz fiber glass, witch I will be doing today. After I get that done I will be starting on the hatch cover.

Harold
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Old 08-20-2008, 09:46 AM
  #220  
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Default RE: MaxCatV1-L Scratch Build

Nice big box you have there
looks great!
Any hints on the hatch cover?

Marcel
Old 08-20-2008, 11:26 AM
  #221  
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Default RE: MaxCatV1-L Scratch Build

Hi Marcel, Thank you for the comment, you are right about the big box, and it also sounds like a drum when I tap on the top! I am not sure what I am going to come up with for the top cover, The last one I did on the mono build came out looking like bubble boy. I am just going to start looking at other cats and get some ideas; I have got some ideas in my head. I am going to use 1/8 inch ply for formers and this green florist fome to shape it.

Harold

Old 08-20-2008, 11:53 AM
  #222  
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Default RE: MaxCatV1-L Scratch Build

I do have a mold of the V1 lid I have, but even if you would like it I don't think it's interesting shipping it to the states..
This is a presentation of the canopy that I'm going to make on the V2, might give you some help.
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Old 08-20-2008, 11:59 AM
  #223  
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Default RE: MaxCatV1-L Scratch Build

You are rigth about the "big box". First I shrunk my plans from 57" to 52". Now I finalized it at 48" total length. I think that should be a perfect length for my CC-motor. I like the fillets you have done on all those inside corners. Great job, Harold.
Old 08-20-2008, 12:36 PM
  #224  
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Default RE: MaxCatV1-L Scratch Build

Are you talking about this cat? a 48" version of this cat won't hold a zenoah inside or you have a canopy like a flat building on top of it...
In my V2 cat the zenoah will hardly fit and that has 0.5cm more headroom then the V1...

Without the overhang this cat is almost the same size as a PPB Skater, so it really isn't that big.
With the hardware mounted it's hardly larger because the hardware is inside the space between the overhang.
So I guess a 48" version can hold a nitro engine, but not a zenoah...

Marcel
Old 08-20-2008, 12:43 PM
  #225  
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Default RE: MaxCatV1-L Scratch Build

Hi Marcel, Thank you for the offer of the V1 canopy mold, but I think the shipping would be to much, however I think it is a vary nice looking canopy, and also think you for the presentation of the V2 canopy. Marcel I am posting a picture here, would it help to wet the area in the red so that the blue lines hold there shape when I cut the top out of the hull?
Harold

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