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Are any clubs or individuals running N2 classes, hydros or monos? I just don't see any activity in this class anymore.
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Joe,
Not much in our area except for national level events.
TGTyler Garrard
NAMBA 639/IMPBA 20525
T-Hydro @ 142.94mph former WR -
We have at least six N-2 sport hydros in our club. We have limited the motor and prop so performance is very close between the boats. There are actually four different hull types running, speeds are in the upper 40s and the average boat is 24" long....our old LSH hulls. That was the impetus for the class, to keep older hulls running.
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A couple of us "little boat nut-jobs" have discussed trying to "revive" the 2-cell performance level for just this reason. There is equipment out there to support it.
Consider a power level where there are well-defined motor parameters, but a very large selection of manufacturers/models to choose from.
N1 is basically dead... Other than a few hold-outs and kid's classes on the East coast, no one runs it in heat racing outside of the Nats, and that's just because Wilmer and I love to beat up on each other.
If you took the current N1 rules, and removed the word "STOCK" from the power parameters, you would be left with this:
Current:
"Any current ROAR approved stock .05 motor."
REVISED:
"Any current ROAR approved .05 motor."
The ROAR specifications for an "05 motor" are very clear, and there is a huge range of winds and manufacturers to choose from. However, there is a practical limit to what will and won't work in our hulls... You would basically be looking at maybe 8.5T up to 17.5T for heat racing (more likely 10.5T to 13.5T), and you could run them on 2S1P in boats in the 22-24" range.
Speeds would be in the upper 30's to mid-40's.
Basically, it would be like the N2 classes of old... Without the constant brush maintenance, etc.
Wilmer and I have been playing with the ROAR stock motors, as well as the low-wind motors (for the 1-cell SAW runs) for several years now. My N1-Mono has the current SAW record at 40.6mph with the first pass @45mph. If I could get a handle on the new ESC programming, I think a 43+ average is possible, maybe faster. Wilmer made a 60+mph pass with his N1 Hydro last fall as well. Think about that for a moment!
I think it would be a fun way to go. Boats would certainly be easy to transport, and you wouldn't be restricted to just a couple of motors. Costs would be very reasonable.
Also, most of the car ESC manufacturers are now making water-proof ESCs. Major bonus.
Just a thought. As far as I'm concerned, I'd make that change to the current N1 specification and you wouldn't even be adding another class.Darin E. Jordan - Renton, WA
"Self-proclaimed skill-less leader in the hobby."Comment
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Okay, since you ask I will think about it. My first thought - how many volts was Wilmer's pack showing when he set the N-1 record?Wilmer made a 60+mph pass with his N1 Hydro last fall as well. Think about that for a moment!
Personally, I'd let N-1 die since there is no interest in it. It has outlived it's usefullness as a cheap entry level class. The FE hobby has matured and it no longer has a need to be tied to car racing. But that's just IMHO.
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Boat is at the bottom of Legg Lake, so we'll never know for sure. I can say, having witnessed the teching of several of his boats, that the packs always measured within the legal limits after the runs... That little boat was amazing, and I was sad to see it disappear...
NAMBA does have that hole, however... we tech cells in, not out. Even car racing techs them out... Would make a lot more sense and be very easy to implement.
I suspect you aren't alone there. BUT, I'd rather kill N2 (make it SAW/2-Lap TT only), and turn N1 into my idea... :) N2 is the hardest class on equipment for heat racing. My thoughts on converting N1 would not be disimiliar to what your club is doing for it's N2 (motor restrictions, etc..), and would provide a very nice 2-cell alternative... The fact that it's tied to "car motors" is just a matter of convenience and practicality. The rules are already written, and regularly kept up to date. ROAR does a MUCH better job of keeping things documented, etc...Personally, I'd let N-1 die since there is no interest in it. It has outlived it's usefullness as a cheap entry level class. The FE hobby has matured and it no longer has a need to be tied to car racing. But that's just IMHO.
And we'd only have to vote to remove one word from the NAMBA rulebook to make it happen...
Would provide what I consider to be the needed separation between an N class and the current P-Ltd classes, which, in most cases, could be run together and you'd be hard pressed to tell which was what...
Just my $.02 cents... I know the idea isn't going anywhere... so I'm just rambling really...
Darin E. Jordan - Renton, WA
"Self-proclaimed skill-less leader in the hobby."Comment
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Uh, we need to keep teching cell before the race. What needs to be changed is the maximum voltage allowed per cell. Right now the rules just say that the "nominal voltage" for N classes is 0-7.5 volts. So, is 7.7 legal? Is 8.4 legal? What does "nominal" mean? We (NAMBA and IMPBA) NEED to close this loophole before it becomes a real problem with the low voltage classes, increasing costs substantially and increasing safety risks.NAMBA does have that hole, however... we tech cells in, not out. Even car racing techs them out... Would make a lot more sense and be very easy to implement.
I'll not jack this thread any more. Look for a new thread sometime in the future.....
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Joe, IMPBA D13 runs N Mono (Same as NAMBA N-2) at all their district races. NAMBA D1 runs N-1 Mono and N-2 Hydro
Jay, The IMPBA has defined voltage ranges in their rule book thought getting that hard number for each class is probably a bit more complicated than it has to be. But it just takes a little math.
Range for N class 1.2 to 7.4 Volts
1. A voltmeter will be used to measure the total voltage applied to the input of
the speed control(s), un-loaded, with a fully charged ‘pack’ will constitute
technical conformance to a class voltage limit. A plus or minus voltage
percentage of 17% will be allowed.
So the Max voltage on a N boat with a fully charged pack taken before a run should be no more than 8.658VLast edited by Chilli; 09-19-2013, 04:01 PM.Mike Chirillo
www.capitolrcmodelboats.com
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I've never read the IMPBA rules that carefully, as I don't think us non-members can access them online (or at least we didn't used to be able to)...
I can't believe, with all their quips about NAMBA safety, or "lack thereof", that they actually ENCOURAGE and allow overcharging in their rules... Kind of a shock, actually.
I, like Jay, have never had a normal, surpurb, or cheap piece of crap, lipo pack, charge over 4.2V/cell on any of my chargers unless I actively tell it to, or trick it into it. I choose not to go there, as I don't feel it's fair.
So, my 2S packs charge to 8.2V, and, if measured off the charger, would more likely read 8.19 or .16 or somewhere in that area.
Interesting... Makes me feel even better about the performance I have been able to muster...Darin E. Jordan - Renton, WA
"Self-proclaimed skill-less leader in the hobby."Comment
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LOL Darin!MODEL BOAT RACER
IMPBA President
District 13 Director 2011- present
IMPBA National Records Director 2009-2019
IMPBA 19887L CD
NAMBA 1169Comment
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Sounds interesting got a Thriftway 1/16th kit to build
A couple of us "little boat nut-jobs" have discussed trying to "revive" the 2-cell performance level for just this reason. There is equipment out there to support it.
Consider a power level where there are well-defined motor parameters, but a very large selection of manufacturers/models to choose from.
N1 is basically dead... Other than a few hold-outs and kid's classes on the East coast, no one runs it in heat racing outside of the Nats, and that's just because Wilmer and I love to beat up on each other.
If you took the current N1 rules, and removed the word "STOCK" from the power parameters, you would be left with this:
Current:
"Any current ROAR approved stock .05 motor."
REVISED:
"Any current ROAR approved .05 motor."
The ROAR specifications for an "05 motor" are very clear, and there is a huge range of winds and manufacturers to choose from. However, there is a practical limit to what will and won't work in our hulls... You would basically be looking at maybe 8.5T up to 17.5T for heat racing (more likely 10.5T to 13.5T), and you could run them on 2S1P in boats in the 22-24" range.
Speeds would be in the upper 30's to mid-40's.
Basically, it would be like the N2 classes of old... Without the constant brush maintenance, etc.
Wilmer and I have been playing with the ROAR stock motors, as well as the low-wind motors (for the 1-cell SAW runs) for several years now. My N1-Mono has the current SAW record at 40.6mph with the first pass @45mph. If I could get a handle on the new ESC programming, I think a 43+ average is possible, maybe faster. Wilmer made a 60+mph pass with his N1 Hydro last fall as well. Think about that for a moment!
I think it would be a fun way to go. Boats would certainly be easy to transport, and you wouldn't be restricted to just a couple of motors. Costs would be very reasonable.
Also, most of the car ESC manufacturers are now making water-proof ESCs. Major bonus.
Just a thought. As far as I'm concerned, I'd make that change to the current N1 specification and you wouldn't even be adding another class."Our society strives to avoid any possibility of offending anyone except God.
Billy GrahamComment
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