revolt prop choice and setup help

**iop65** · 07-30-2014, 02:10 AM

i would not use 648 ,450 or 452 props on a 30" boat ! but that's me
2200kv on 6s in a mono is way to much in my book, works in a cat (if you know what your doing!) but for a mono?? again; that's me

chine walk : adjust the strut so that you get more boat in the water

**tlandauer** · 07-30-2014, 03:14 AM

Let's talk about your batteries first.
With a 2200kv motor, you are better off running 4s2p especially if you are using a 4082 sized motor. You will get by with one Dinogy 4s, but your run time will be short and you need to time it so you do not let it run until LVC kicks in, too hard on the battery.
With your 3800mah battery, you are killing that poor battery, there is a reason why it is so hot, when this battery is no longer able to supply the juice the motor demands, next thing to go is your ESC.
On that boat, I will not use any props beyond M445 and x 642.
As said, 2200kv on 6s is too much if you are doing sport boating.

**iop65** · 07-30-2014, 06:27 AM

what is the reason you have changed the cooling?
you've put some intakes on the left side behind the hull?

i don't understand ;doing this you're hull is not symetric anymore ,again what is the reason for this?

just looking at that i can only assume you messed up the balance big time
if it was me i would get that stuff off and use the rudder intake

what size is the motor?

**tlandauer** · 07-30-2014, 11:15 AM

Interesting, it was too late last night and I did not see those transom pick up.
Rudder pick up is the most efficient in that it gives no additional drag. Too bad that a rudder that size usually does not have dual pick ups which is what the OP was looking for.
I would say that it is more important for the OP to make sure that the placement is correct at this time.

**kfxguy** · 07-30-2014, 11:27 AM

I had an impulse 31 (very similar hull) an a 45mm prop made it handle funky. X642 worked the best.

**turbovr6jetta** · 07-30-2014, 10:21 PM

Originally posted by tlandauer

I would say that it is more important for the OP to make sure that the placement is correct at this time.

Placement of the pickup? What would I do to make sure its placed properly I just figuted the closest i could get to flush with the bottom of the hull would be best for water flow.. Its probably 1/32" up from flush. I was thinking about doing a different set up with a dual pickup rudder but was kind of lost when trying to find something to make work. And now that my rudder is damaged I would be happy to change rudder setups if anyone had a good suggestion on a mount and rudder that was fairly easy to install. I can fill holes and drill new ones and work out some sort of linkage but it does seems to work ok for now.

I dont intend on running 6s I mostly just wanted to see what those kind of rpms were like. I dont have anyone to run with so I have to keep myself entertained. If i end up with a decent 6s pack I might throw it in once in a while to try to melt something but its not my intentions to ever really run that kind of voltage.

The motor is only a 3674 not a 4082...

The 45x68 prop really didnt seem to have enough speed on 4s and everything was stone cold. I think I could prop up quite a bit without concern for the electronics. And I think I can get it dialed it to be pretty stable at much faster speeds.That and I seem pretty limited on what I can seem to find in stock that is already s&b. Right now I'm kind of thinking about the x646 cause its the smallest diameter prop I can find in stock without going super small...

**tlandauer** · 07-31-2014, 01:37 AM

I was thinking out loud, so forgive me, certainly not meant as a criticism. I thought it would be best mounted flush, now that I think of it, it is not possible right? Or you would have done it that way.
I am unaware of any rudder that size with dual pick ups, TFL has one but it is oddly shaped. http://kintecracing.com/ Somewhere in the middle on the page. Speed Master makes a great one, their aluminum is first class, but it is too long for that boat. I am sure someone else could point you the right way.
You are correct, 3674 motor does not need the kind of parallel 4s that I was worrying about.
Why don't you go to a lower kv and have some fun with 6s? keep an eye on the F/S section and you might be able to pick one up for a song.
Good Luck,
Cheers!

**tlandauer** · 07-31-2014, 03:57 AM

Just in case anybody has any input from this thread and you will know now.
http://forums.offshoreelectrics.com/...606#post578606

**iop65** · 07-31-2014, 04:35 AM

i'm about 99% sure that with the cooling from the standard rudder intake motor and esc will stay cool enough to reach the limits off this 30" hull ,so i see no need for the quest for a dual rudder intake

the thing that you are using is intended to put IN the hull , not behind it,but again i see no need for this

i would use the 3674 2200kv on 4s and with everything working well and balanced out maybe try a few 5s runs
but in no way would go for 6s with this motor/hull

my suggestions :buy a few cnc props ( 42-43-45mm 1.4p 2 blades ,and maybe 42mm 3- blade) , at this point there all you could ever ask for since i have the impression that you can do with some testing and eventually experience

**turbovr6jetta** · 07-31-2014, 09:12 AM

Originally posted by tlandauer

I was thinking out loud, so forgive me, certainly not meant as a criticism. I thought it would be best mounted flush, now that I think of it, it is not possible right? Or you would have done it that way.
I am unaware of any rudder that size with dual pick ups, TFL has one but it is oddly shaped. http://kintecracing.com/ Somewhere in the middle on the page. Speed Master makes a great one, their aluminum is first class, but it is too long for that boat. I am sure someone else could point you the right way.
You are correct, 3674 motor does not need the kind of parallel 4s that I was worrying about.
Why don't you go to a lower kv and have some fun with 6s? keep an eye on the F/S section and you might be able to pick one up for a song.
Good Luck,
Cheers!

Oh I didnt take it as criticism. I was honestly asking what the correct placement was. I didn't want I didnt want it protruding so I errored on the side of up instead of down. It could of been perfectly flush but the set of holes I drilled had it up a bit. The holes could be ovaled a tiny bit and it could be set to flush. And I will keep an eye out dor a lower kv motor and some 6s batterys. The only reason I have the 2200 is cause I got it on some super sale from atomik combined with some coupon or something. I only ended up paying like 48 bucks withe the water jaket.. but it was about the only motor they had in stock when the sale was going.

Originally posted by iop65

i'm about 99% sure that with the cooling from the standard rudder intake motor and esc will stay cool enough to reach the limits off this 30" hull ,so i see no need for the quest for a dual rudder intake

the thing that you are using is intended to put IN the hull , not behind it,but again i see no need for this

i would use the 3674 2200kv on 4s and with everything working well and balanced out maybe try a few 5s runs
but in no way would go for 6s with this motor/hull

my suggestions :buy a few cnc props ( 42-43-45mm 1.4p 2 blades ,and maybe 42mm 3- blade) , at this point there all you could ever ask for since i have the impression that you can do with some testing and eventually experience

I could be wrong. Beings that I'm new to the hobby but I dont think this transom pick-up is supposed to go inside the hull. It appears they have them that look similar that you cut in and flush mount to the bottom of your boat. But this one has mounting tabs to allow you to mount it to the transom.

Are cnc props actually any good? In my head it doesnt seem they could be as good as a meticulously thined sharpened and balanced prop. I have been looking at them but didn't know if they were worth while.

**iop65** · 07-31-2014, 09:28 AM

never seen those intakes with mountings tabs before( looking at the picture yesterday i was wondering how you had them fixed to the transom)
get rid off it , it messes up the balance ( it's like an extra "fixed trimtab" at one side),an imbalance that will have to be compensated with the trimtabs :extra drag!loss of speed

as you're new to the hobby the cnc props will do just nice ,i find them worth the price ,just needs a little sharpening and they are good to go

just my 2 cents

**montymike** · 07-31-2014, 10:09 AM

Buy another boat designed for these mods. Put revolt back, if u can to stock . Big motors and esc screw up the the ballance of a nice designed boat.

**tlandauer** · 07-31-2014, 11:17 AM

Look guys, may be it was not the best choice, but there is a transom mounted dual pick up.http://www.offshoreelectrics.com/pro...prod=ose-80515
This is not the same as with those in-the-hull /on-the-floor pick ups.
I agree that there is extra drag , but the very fact that one can see this product and it is tempting, go easy on the OP, lol...

**HTVboats** · 07-31-2014, 12:39 PM

On my P mono (33'delta) with a Neu 1515 1Y an M445 is a tad faster than a 45X68, and is a great heat prop. An M545 adds 3-4 mph and cuts into run time. An M656 faster yet but can't make 6 laps without risking a fire. Stay away from prop diameters above 45mm as they will load your motor, cause eratic handling, and you won't benefit from the larger pitch. A 642 might work well too.
Mic

revolt prop choice and setup help

revolt prop choice and setup help

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment