Finally scored one- setting up for NAMBA P-Ltd Cat Sprint race

[properchopper]

Tony, not a bad idea, but that's still a pretty wide expanse to make rigid in that plane... You might consider doing something with some angle to "I-Beam" the mount instead... or simply make a couple of longitudinal braces for it to attach to the mount and down to the bottom of the hull... That's how I'd proceed... Then, once that was rigid, I'd cut those damn side pieces out and give myself some room in there without the lateral pieces spanning the interior... (In other words... I'd take that motor mount out and put in an OSE style one... )

But, that's just me... :D

Darin, I have tons of this cool angle stock & tried to figure a way to employ it. The CF reinforcing seems quick & workeable - the CF plate I have is quite thick and rigid as a [ insert metaphor , may use term Viagra if needed]. The bottom mount needs to have bottom deck really stiffened; it's very flexible.

DSC03161.JPG

[Brushless55]

Good ideas from both you guys on that mount!

[properchopper]

Here's the CF reinforcing plate. I will laminate with G-Flex as well as being anchored by side bolts and motor attachment bolts. Clean, simple (could be an inventoried add-on) and RIGID. This is a spare mount I did; when I pulled the original one off it WAS bent.

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[detox]

Yup; just pitched it up a teensy bit with a "tip tweak" - kind of a "poor man's mod" - I'm still a little lost in the art of prop magic

[ATTACH=CONFIG]75081[/ATTACH]

Temps seem ok with the upgraded cooling - a 445 on some spec powered hulls get the motor quite hot. I still need to do a full 2.5 min test to confirm that temps will be sustainable for a full race..

Thanks Tony. Picture is saved.

BTW i use a STRONG pair of reading glasses (+3.00) whenever i thin and sharpen my props. You can buy these really cheap at Walmart.

[properchopper]

Thanks Tony. Picture is saved.

BTW i use a STRONG pair of reading glasses (+3.00) whenever i thin and sharpen my props. You can buy these really cheap at Walmart.

Good idea. I always wear magnifiers for up close work while my contact lenses are in. I get them at the .99 Cent Only store.

[detox]

I wonder if you make the rear riding surface more sharp and square edged, would that make hull faster. Also sand hull bottom with 1000 grit paper may help. These are Old ideas, but everything helps. You could probably do this without messing up factory finish too badly.

[properchopper]

Stiffening/reinforcing complete

The CF plate bolted/laminated to the stock motor mount did the trick - way strong & no more flex. Seemed like a clean and easy solution. Supported the shaft with nifty goodie. Epoxied lightweight aluminum angle rails to stiffen floor. Did the trick-no more trampoline floor. Time for a cheeseburger


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Note to all :

All these mods were done 'cause I like to play with boats and I'll be racing against the best of the best so so a little bolstering was in order 'cause I intend to push this boat hard. For most purposes they weren't all that necessary. Actually this boat is so striking that I hate to get it in traffic . The MC right out of the box is very cool as delivered, and along with several other recent rtr's has really raised the bar for all of us.

Git 'Em Wet, Amigos

Tony

[properchopper]

I wonder if you make the rear riding surface more sharp and square edged, would that make hull faster. Also sand hull bottom with 1000 grit paper may help. These are Old ideas, but everything helps. You could probably do this without messing up factory finish too badly.

Did the light sand & coated with my "secret sauce"

[Brushless55]

Tony,

Keep us posted on your progress. It’s fun to see and hear about the boat in use.

As you all know we had the 2030 out on the market before the Motley Crew. During testing I was just not all that happy with the current draw with the 2030 in the crew. Sure it would have worked but I wanted just a tick more run time and a little less current draw.

I messed with props and started testing the new 1800 we had been working on in the boat.. BINGO.. just right.. A great balance of speed, power and power consumption.

I have quite a bit of data logged regarding the testing of the boat.. fun to look back at all the hours of design and testing that went into that boat.

BTY.. EVERY ASPECT of the hull and hardware were designed and tested here in the US BY ME.. no pulling the wool over the eyes of anybody.. If it sucks.. I TAKE FULL RESPONSIBLITY.. if its fantastic.. the same.. No pointing fingers or any of that BS..
To bring it to market however adds a ton more people..

Have fun with the boat tony!.. love the tip paint!


Grim

I have one of these on its way from Tower!!
would a M447 be to much on the stock motor?
I don't have a M445 yet, but I do have a X645 along with the M447 to try..

The CF plate bolted/laminated to the stock motor mount did the trick - way strong & no more flex. Seemed like a clean and easy solution. Supported the shaft with nifty goodie. Epoxied lightweight aluminum angle rails to stiffen floor. Did the trick-no more trampoline floor. Time for a cheeseburger


[ATTACH=CONFIG]75119[/ATTACH] [ATTACH=CONFIG]75118[/ATTACH]

[ATTACH=CONFIG]75117[/ATTACH] [ATTACH=CONFIG]75115[/ATTACH] [ATTACH=CONFIG]75116[/ATTACH]


Note to all :

All these mods were done 'cause I like to play with boats and I'll be racing against the best of the best so so a little bolstering was in order 'cause I intend to push this boat hard. For most purposes they weren't all that necessary. Actually this boat is so striking that I hate to get it in traffic . The MC right out of the box is very cool as delivered, and along with several other recent rtr's has really raised the bar for all of us.

Git 'Em Wet, Amigos

Tony

Ok Tony, have you had a chance to race this Cat yet?

[properchopper]

I have one of these on its way from Tower!!
would a M447 be to much on the stock motor?
I don't have a M445 yet, but I do have a X645 along with the M447 to try..




Todd,

There's some propping discussions here; check them out. The 1800 motor should spin a 447 but you know the drill : run for one minute/check temps. The hull does run fairly wet, so be carefull not to load the motor too much.

Ok Tony, have you had a chance to race this Cat yet?

My plan is to race it at the Nat's in the Ltd Cat-Sprint class. I took it to the 2-lap last weekend for P-Ltd Offshore, but Tyler ran his 26" DF mono and was untouchable - I did burn up a 2030 motor with an MM545 'tho.

[Brushless55]

Todd,

There's some propping discussions here; check them out. The 1800 motor should spin a 447 but you know the drill : run for one minute/check temps. The hull does run fairly wet, so be carefull not to load the motor too much.

thank you!
sorry to hear about the HOT 2030 motor...

what is a good way to loosen up a Cat other than moving the packs farther back?
My MM ran very wet..

[Darin Jordan]

I took it to the 2-lap last weekend for P-Ltd Offshore, but Tyler ran his 26" DF mono and was untouchable

I really, Really, REALLY think it's time to re-evaluate some of these "record" titles and start calling them what they really are.... It seems silly to me, and this is coming from someone who has held "Offshore" 2-Lap records, to be setting 2-Lap... or SAW, records... for a class called "Offshore", which really isn't a "class", but is, rather, a RACE type/format...

Records should be held for HULL types and Power system levels... not for "race formats"...

With that said... I think it's time to establish a "Cat" class...

[properchopper]

thank you!
sorry to hear about the HOT 2030 motor...

what is a good way to loosen up a Cat other than moving the packs farther back?

Add castor oil to the cat food - Oh wait ! Truth is both my MM and the MC appear to run wet; it's a product of cg and strut angle to get the sweet spot. I'm setting mine up "wet" for the race; racewater and headwinds will cause a balanced-for-smooth water setting to get badly upset.

Gas cats run really wet and plow through the corners but can corner at WOT. Seems both the MM and MC are designed to duplicate this. My Drifter barely touches the water on the straights but corners like King Henry VIII


My MM ran very wet..

You'll have fun with the boat; a little test/tune is always part of it.

[Darin Jordan]

You'll have fun with the boat; a little test/tune is always part of it.

Tony... did you get a chance to test the skagged strut??

[properchopper]

Tony... did you get a chance to test the skagged strut??

Darin,

Haven't used one so far; corners really nice for sprint course radius turns given that the end point/dual rate is dialed in correctly. I'm finding that cats do corner at different radii with the same rudder deflection depending on the speed of turn entry. The skeg strut might help in this. Different than piloting a mono through turns and takes some practice/retraining on the wheel.