Rigger H 2

[wapniak]

http://www.youtube.com/watch?v=DKKy5NrLHKc&list=UUAfph5qrpNzl3K0S7yPzgsQ

[grsboats]

Is this rigger a Jae or scratch built...anyway nice place and video.Thanks for sharing Gill

[wapniak]

this model is a conversion of a NE-Stuff nitro rigger KEP's T2 .21 into electric.
it took part in a competition and ended up in the 4th place.
this is one of the rounds video:

http://www.youtube.com/watch?v=70mM_pmKuPE&list=UUAfph5qrpNzl3K0S7yPzgsQ

[ray schrauwen]

Looks like fun. Maybe we should try a 4 minute oval race like this in the west.

Beautiful build. http://pfmrc.eu/index.php?/topic/46223-budowa-hydro-2/

It's really impressive what you guys do with the fewer watts you use.

[raptor347]

wapniak,
Very nice build! I can appreciate the work that went into it. What motor are you running and what size cells? What is the total weight ready to hit the water?

Can you remind me what the current NAVIGA battery rules are?

I may have to try a 4 minute setup in one of my newer boats. I've been pretty successful in our sprint races, time for something new. I might have to go set a NAVIGA oval in my test pond for development purposes.


Ray,
I don't know if we're ready for this. Think of all the dead packs in buckets after "offshore day" at the nats.

Offshore duration with outriggers and half the capacity. It sounds like an attention to detail game that might be right up my alley, something new to keep my interest. The motor would certainly not be the fuse anymore. Maybe we could try an h-2 demo on O/S day at the nats next summer.

[ray schrauwen]

Hello Brian,

Yep, not an easy cage to jump into 4 sure. I only came in 3rd for q-offshore and my batts are just fine still. I don't go nuts on setups like some guys do. The hottest setup I have is my Q-sport and I keep working on that.

You can see in the build that everything is weighed, everything is minimal specially how thin the hardware is, almost everything is handmade... Kinda like your stuff.

[NativePaul]

The Naviga battery rules for Mini Eco, Mini Mono and Mini Hydro are 2s or 3s weighing 110 grams or less. Eco Standard, Eco Expert, Mono1 and Hydro1 are 2s or 3s weighing 280 grams or less. Mono2 and Hydro2 are 4-6s weighing 560grams or less, battery wires, connectors, shrinkwrap, velcro, anything attached to the battery is included in the weight. The silver polymer wrappers for the cells may not be trimmed or altered in any way. Maximum charge voltage is 4.23v/cell.

Naviga announced a change to the hydro runtimes after the start of our season, this year in the UK we are still running for 5minutes, plus 10 second mill time, plus in-lap, but from next year the runtimes will converge with the mono classes so both monos and hydros will be running for 6minutes, plus 10 second mill, plus in lap (none of our classes have been 4 minutes for MANY years)

Apart from that things are pretty simple, all classes are any motor, any ESC, only the Mini classes have size limits <430mm Mini Eco (both standard and Expert), <450mm Mini Mono and Hydro. You need a safety loop that must be red, rear facing, >25mm diameter and must not be attached to a removable part of the boat (eg hatch (not that you would)). You need an opaque white vertical number plate 80x80mm with your number on it in a clearly read 10mm wide font, at least 1/3rd of the boat top and bottom must be brightly coloured. There is one strange one, all hydros are technically semi scale (ish, if you have never seen a real hydro, and you are blind, and so is your giude dog) as such riggers need a windscreen or a driver figure but it is a legacy rule and while the Euro riggers do have them molded in I have seen many riggers with a windcreen just painted on, decaled on or even just drawn on with a marker, a black crescent on the front of the bubble on a raptor rigger would be fine.

Those are thae main points and will get you racing but of course ther are more and more details, course sizes etc that I cant post here, but I have the last English translation of the rules we were issued on my other PC, if anyone wants it for reference PM me with your E-Mail address and I will send you a copy.

[wapniak]

Motor is Feigao 36/60 2450 kV, Lipo is Zippy 4S 5800 mAh 30C.
Weight to run 1740g.

[raptor347]

Paul,
Thanks and PM sent.

Wapniak,
Thanks for the info. Gives me an idea of what to look at.



So, now that we've started the conversation.

What's the trend on voltage, 4 or 6 cells? Is it split across the fleet?

[wapniak]

6 cells gives less current and so thinner wires, so smaller ESC means cheaper.
4 cells requires higher KV engine; 6 cells requires lower.
the choice is yours.
regards

[NativePaul]

3s/6s is more popular here now and I would advise any newcomer to go with a 3/6s setup if they are starting from fresh, 2s/4s is still competitive though and many still use it sucessfully, in the bigger classes the lower amp draw of the higher voltage allows a small efficiency advantage via either reduced wire and ESC size reducing overall, or reduced voltage drop on the same size gear (or a combination of the 2, personally I use the same size ESC but with reduced wire size in my 6s H2 (Ice200, 10g) for significantly reduced weight while still having a safe amp overhead and lower resistance). The Pspec motors have plenty of power handling for Hydro/Mono2 and could be decent budget choices with AQ UL1 for 4s or PB 1500/1800 for 6s, or whether you would want to go high end with a new Neu (ideally you would want smaller than a full on P motor, I ran a 1415 on 4s for a couple of years and I think a 1412 would have been better suited, having said that on 6s I now run a Leopard 3674 1700 which is even bigger and hugely overpowered, but with throttle management I can get the 5m runtime, god knows how I will get the extra minute next year though. possibly going to a 3665 1600, but I am hoping a new boat that isn't weighed down by many years of glue may just be enough.

In the mini classes 3s still offers reduced voltage drop, but the current is not low enough to drop down to a 10A ESC and the weight difference between a 20A and a 35A is very small, I have stepped up to an Ice50 (without case, uncooled) (for the data) and believe it to be just as light as a smaller ESC that needs water cooling.

[wapniak]

The rebuilt in progress.

http://pfmrc.eu/index.php?/topic/46223-budowa-hydro-2/page-4#entry521162

[grsboats]

Could you please tell me why do you fixed the turn fin under the sponson that way? Thanks Gill

[treystoys]

Hey Gill it looks to be under the sponson and possibly dragging in the water, but since the rear section of his sponsons are actually above the water (stepped)...at speed the only thing in the water is the fin itself. Lol I'm not sure if thats why you asked, but when I saw your question thats imediatly what I thought.

Trey

[grsboats]

Trey I just asked just to see what would be his answer once I've been building riggers for 30 years and never saw a fin fixed that way.....anyway I'm sure he will improved this project and take pride of it.Thanks Gill