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I see lots of talk about 40mm motors taking over. I dont see it happening(not to soon anyways). Maybe in larger boats like the spartan or Voracity, but not the smaller boats that fit the p class.
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Steven Vaccaro
Where Racing on a Budget is a Reality! -
Curiosity... I took a look at the new IM31.
So this is a 1750kv motor meant for 6S and advertised as 45+ mph. With some tuning and prop upgrades this will probably be in the 55 mph area on 6S.
But 6S doesn't fit P class. So these isn't really a threat... and if others (AQ) try to compete they will probably go down the same road of 6S.
One could put 4S in this boat with a M545 prop and it'd probably be running similar speeds as current p-limited boats.
My head is spinning... Now more then ever I get Darin's point of not thinking about what RTR is doing.
Only thing I'd like to ask based on this... would it make any sense to include some testing on these 40mm motors that come in these boats to see if along with the specs for the 36mm motors, there would be a limited list of certain 40mm motors that would also be allowed in p-limited. If these RTR boats are meant for 6S with slightly lower KV there may not be any real advantage when on 4S and could still be included in the class. Just a question...Last edited by dethow; 08-27-2015, 01:53 PM.Have fun with that....
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Dam, I didnt know the impulse went to a 40x68. Dam thats going to be a winner of an rtr.Steven Vaccaro
Where Racing on a Budget is a Reality!Comment
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Yup...
RTR got this started. I don't see it sustaining it.
If we like this powere level and boat size for racing, then we detach from RTR and do something like has been suggested.
If we don't care, we let it die off naturally through time and attrition.
I love the power level and size. I'd like to keep it going.Darin E. Jordan - Renton, WA
"Self-proclaimed skill-less leader in the hobby."Comment
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Is it possible that the answer to this exists in just putting a cap on the KV and also prop dia. and pitch for P-limited?
Maybe:
1700-1899kv motors have a max prop of 45mm and 1.5 pitch
1900-2100kv motors have a max prop of 45mm and 1.4 pitch
Would someone that wants to spend $$$ on a 2050kv Neu motor really have a speed advantage on someone running an AQ2030 if they are both limited by the prop size? Might that guy running a more expensive motor only get a better durability/longevity over the cheaper motors?
I understand that may be a dumb question and the obvious answer to you experienced guys will be YES, a Neu 1515 2D (2050kv) will be much faster then an AQ 2030 even if they have the same prop. But I wanted to ask.
But if the answer was NO... I LOVE the possibilities. I could run a Neu 1515 with a limited prop and qualify for P-limited but then change props to go compete in open P with the same boat. And that guy who buys a new IM31 could put 4S in it, run a M545 and still fit within the P-limited class.Last edited by dethow; 08-27-2015, 02:50 PM.Have fun with that....Comment
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My question was... what if we don't limit the size and weight, but instead limit the kv and prop sizes?
Theoretically... a 40x80mm motor turning 2000kv shouldn't push a boat any faster then a 36x60mm motor turning 2000kv if they are both limited to the same M445 prop.
That's my question... if that theory is correct then this method would fit the intent for P-limited.
INTENT
- Cost Effectiveness (Cost Control) (One could run an AQ2030 and still compete)
- Provide Amateur's a class to improve their skills (Speeds would be reduced for people to learn)
- Balanced Competition (Parity) (Speeds would be similar no matter what motor size because kv and prop is capped)
- ????Easy Entry (Think RTR's)???? (Existing boats AND new boats with 40mm motors would fit and be competitive)Have fun with that....Comment
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Darin E. Jordan - Renton, WA
"Self-proclaimed skill-less leader in the hobby."Comment
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This is the part that worries me. The limited classes would not have had the participation it has without the influx of guys buying stuff at the the local hobby shop or from guys like Steve. They bought to play and found racing after the purchase. At least up here that's the case. Will these classes thrive or even survive without that? I just don't have a feel for that.
I'm certain that if the local guys are buying something they have to change to race they simply wont race. Newbies typically don't even know how to solder. No offense to any newer guys. Just something many have to be taught.
So they buy an RTR and can run in some sort of rooky class around 50ish mph. Then when they get good enough they can graduate to slower boats they have to build themselves. we.............hoo...........Noisy personComment
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Well... Automatically the big block car should weigh more but assuming they are the same the big block should accelerate faster due to a torque increase. However, a big block typically has a higher cid which would cause the higher torque. In the case of them being the same cid, I guess I'm not really sure which would accelerate faster. I do know if was building a car and I could choose either a big block or small block what both have the same cid and HP... I go with the small block all day. The car would weigh less and thus be faster.
I'm not sure that analogy went were you wanted it to. Are you saying the larger motor will have more torque so it will have an advantage even if using a smaller prop then the max it could handle? So it's top end speed may not be greater but it's acceleration through and out of the turns will be better.
Okay... so a similar cid and HP big block verses small block... I'd still take the small block because the weight would offset any additional torque provided by the big block. Relating that back to boats... a 40mm motor will have more torque/acceleration out of a turn but the 36mm motor will have a lighter weight and thus may not need that extra torque to get up to speed.
I guess a simple yes or no would be good. Because that analogy still has to many factors I could pro and con.Have fun with that....Comment
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