First rigger - maybe jumping in the deep end?

[vvviivvv]

Hello all,

Having recently sold my Excocet cat due to lack of work from covid, I've now got a contract for January again,

I have the option to buy a "HD2" rigger,

Now never having owned a rigger - this will be for pure sport running, no competition apart from maybe a "saw" pass - I don't expect to be anywhere mental saw record speeds.

boat is 92cm in length, and I have attached some pics. What's everyones thoughts?

I have been suggested 3660 TP motor (can't find any record of one) approx 3100kv on 4s. another suggestion is a 4092 motor also on 4s.

What's everyones thought's?

[sammyha]

Riggers are fun. You'll be fine when you learn to turn with throttle. Was the only issue I had anyway. The rudder is more effective with speed...

Sent from my SM-G950U1 using Tapatalk

[Fluid]

At over 36? the hull is best powered by 6S, not 4S. My own ~36? hydros have used a 40x102/1200 motor on 6S, but the OP?s rigger can use a 40x92/1500 or 40x102/1500 with ease. I?d suggest a minimum of 6000 mAh total capacity and an ESC capable of at least 200 amps. Props could range from an equivalent x448 to an x452 or more depending on the desired performance and run time. Start with the smaller prop....





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[bhorowitz]

Hi Liam,
Who makes that boat. It's a beauty.
Bob

[vvviivvv]

Hi, the hull is a German company ‘cnc frasservice’

Hull and sponsons run around €320

Thanks fluid, I’m looking at investing into a mgm esc, as they are fairly compact and powerful, probably a 28026 so 280 constant 340 burst,

I have 2 neu 1521 1Y spare and also 2 6s lipos spare from another project so a 6s boat could be possible.. the few that have been built so far are 4s boats..

[Fluid]

Using 6S will reduce the amps required for the same speed compared to 4S, less stress on components and less capacity required. The Neu 1521/1Y should work well. Keep us informed of your project.



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[vvviivvv]

Hopefully will get the hull before the end of next week, I guess ill go with a 28026 'lite' - guess they are the old version? still rated for 280-340 but maybe less features.

[vvviivvv]

here is an interior shot I have, really not much space for 6s...

this is a 4s setup.

[NativePaul]

6s needn't be any bigger than 4s. Having said that 4s will work fine, just with a fraction less efficiency.

It is a Hydro2 class hull (hence the name), designed to run 6 minute races using 120 watt hours of energy which is an average of 1200W (about 55A on 6s, or 80A on 4s). They are generally much flightier and take a lot less pushing with their wider sponsons lighter weight and lifting tubs than USA sprint hulls, but conversely are much less capable of very high speeds, and handling rough water.

Will a 4092 wit cooling jacket fit OK?

Can you describe your sport running? If it is SAW style passes, I would suggest one of the Sprint style riggers like the Bauss Raptor, the KEPS or the JAE, if you want to go round and round for a minute or 2 I would go for one of those sprint hulls too, if you want to go round and round for 5-10 mins that is a great hull, if you want to turn left as well as right you don't want a rigger.

[vvviivvv]

Hi Paul,

Just trying to build a fleet up, been after a rigger for a while - won't be racing it.

The above 4s setup is a 4092 motor fitted with swordfish 220 ESC.

My sport running usually involves plonking myself in the middle of a lake (zodiac this time of year) or our larger boat in the summer when it's on the lake, and then I have freedom to run the boats around me and have plenty of space (apart from ever increasing amounts of swimmers)

Here is my mono filmed from the shoreline cracking 81mph and blowing the cooling line off the back - will be shooting for 85+ next week, im out there in the Zodiac,

Could just run rings around myself with the rigger, How does 220amp swordfish, TP3650 4D (2900KV) sound? Starting with a X442 prop?

Ideally, running ovals, 3-5 min run time 70-80mph would be great.

[NativePaul]

3 mins at 70 should be doable, , 5 mins will be more like 60. If you want 80 I think 3 mins is overly optimistic and its the wrong boat.

[vvviivvv]

Any suggestions for a more speed capable carbon rigger that's available?

Think I'll probably end up getting this one as well, one is available with 240amp esc and 4092 motor that's doing 70mph on a 3 blade 40mm tfl prop, will roll with that for now and maybe look into a different ABC prop,

will try with the usual x442 etc also.

[NativePaul]

Nearly all the carbon FE riggers I know of are designed for Naviga racing, sprint racers dont seem to mind a bit of extra weight from a wooden boat, extra weight can be an advantage keeping you on the water if you have unlimited power. The only one I can think off is Randy's BBY riggers if he is making again after his move.

You could ask Brian Bauss if he would make you a Raptor in carbon.

Or while I haven't seen one run yet, Andrey Jakavenko's new H2 looks to me like it might be too stable and solid to be a great H2, but might suit you better than most.

[vvviivvv]

Perfect, I know prop choice is very specific for a given hull, but as you have lots more experience than me, could you point me into what I should be looking for in a rigger prop?

im thinking X442/ Abc 1619-19-38(2) etc? When it comes to ABC, do I want higher for lower rake for a rigger, same again with blade area?

Setup is probably going to me a 2900kv 3650, 4s, 220amp esc. or am I way off the mark here for that hull?

Kind regards, Liam

[NativePaul]

I haven't used an ABC 19 series prop, but I like their 17 series, and generally prefer low lift low blade area props.

The ABC 17 series take a lot less work to get to where I want than any octuras (other than the N940, shame they never expanded this prop to a whole range) do, so I imagine it will work well.

I definitely wouldn't pick a 1.9 pitch prop to start off with though, a 1.4 will be much more forgiving in amp draw, lift and prop walk to start with, then when you get it dialed in with a 1.4 you have a decent starting point to pitch up from, and start setting it up again for that (if you want to).