Got my 32" "delta force copy" off ebay- couple questions

[kwiktsi]

Ugh, ok- I just ran it again this evening and it's still not working as it should. Again on 3S with an X645- this time, the motor temps, battery temps, ESC temps and connector temps were in the 80's and it ended up melting motor wire off the ESC!! I wish I had an eagle tree or something to record amps, I can't believe it could be so high with everything staying so cool to the touch, but it must be. I re-soldered the wire to the ESC and actually re-did them all- they barely had any wire exposed and only soldered about 1/16" at the tip, I stripped them all back about 1/8" and soldered a better connection that what they were originally. I dropped the prop to an X438 as well- if going down 7MM on the prop doesn't work, then nothing will and it will be time to just go with a 12 XL and run 6S!

[Mich. Maniac]

I would go with either of these two... as ALWAYS just my opinion...

1. ammo 2300Kv/blackjack esc/4S1P/ x440 prop/= 150.00 plus pack
2. blackjack motor/HV turnigy esc/ 6S/x642prop/= 180.00 plus packs you have

I have seen both these setups either here or on the forum and with great results all around.

[kwiktsi]

I would go with either of these two... as ALWAYS just my opinion...

1. ammo 2300Kv/blackjack esc/4S1P= 150.00 plus pack
2. blackjack motor/HV turnigy esc/ 6S=

I have seen both these setups either here or on the forum and with great results all around.

Have you seen the blackjack motor in a 32"? The ESC that came with it is "supposedly" rated to 125 amps and 6S. If I can't get it to run decent as-is on 3S2P, then I will change my setup to run on 6S with a Feigao XL motor (unless the blackjack motor is comparable?). Thanks.
Joe

[Mich. Maniac]

Blackjack motor if in correct setup is much more powerfull and efficiant with what I have seen first hand. Mostly on 4S but I have seen it run 6S as well. Running 6S you would only have about 4minutes of runtime though no matter what packs and or prop

[kwiktsi]

Blackjack motor if in correct setup is much more powerfull and efficiant with what I have seen first hand. Mostly on 4S but I have seen it run 6S as well. Running 6S you would only have about 4minutes of runtime though no matter what packs and or prop

Hmm, that's why I wanted to try to work with this setup- according to the motor info the seller gave me, it pulls 50a max when set up right (judging by the melted connectors, I think it is more than that lol). I'm hoping I can get away with propping it accordingly and getting it to survive with this motor and 3s2Pp and still have good run time. We'll see. If not, I'm thinking maybe a 12xl would be a good in between.

[Steven Vaccaro]

A Feigao XL will kick the crap out of a blackjack motor in a boat that size. Just ask some of the guys running delta 33's with Feigao motors. They are running mid to upper 40's. Try that with a blackjack motor........

[Steven Vaccaro]

Feigao are really good for the money, no doubt!
I'd like to see what the new 580 does? must be pretty close to a KB as it is 45x76!

Stay away from the 580 unless you want to do some experimental testing. Its a poor motor for what we do. I had two go
They cant take the rpm in the mid 20k range.

[kwiktsi]

Hey Steven- what would you recommend for a motor for this boat that will give me the decent speed and longer run time I am looking for? Ideally, I would like to run it on 3S2P at the lake and have 30+ mph speeds with long run time for screwing around in the rough stuff when we are up there and then switch the harness to run 6S for when I want to crank it up for fun at the calmer lake in my community.

I was thinking maybe a 12xl with an x445-450 for running on 3S and then propping down to ~x438 when running 6S may get me what I want out of it. What's your opinion?

Edit- after doing the math, I don't think that would really move well at all on 3S . Do you have any thoughts on this? Thanks.

[Steven Vaccaro]

12xl will be great with the 6s power. The problem will be the 3s. On 3s you will wont have enough rpm. You can compensate with the larger prop, but than you get to a point where the amps go up and you see no difference in speed.

The voltage difference between 3s and 6s is so large the boat will either be in the low 20's or high 30's.

[Steven Vaccaro]

By the way I just noticed how we hijacked your thread. I will try to clean this up. Sorry

[Mich. Maniac]

A Feigao XL will kick the crap out of a blackjack motor in a boat that size. Just ask some of the guys running delta 33's with Feigao motors. They are running mid to upper 40's. Try that with a blackjack motor........

I cant even run my SV into mid 40's with Feigao XL motor unless I wanna run for about 3 minutes. Heat is insane. I now can only run it with 442 prop if I wanna complete a 5 lap run and speeds are 40-42mph. Yet no one can explain, and no one wants to backup a perhaps faulty or weak motor. I have recently purchased a Neu and will give it a try. There is a thread on this forum where a person used a bj motor on 6s to get his SV to 52mph.

http://forums.offshoreelectrics.com/...ead.php?t=4449

[Steven Vaccaro]

I cant even run my SV into mid 40's with Feigao XL motor unless I wanna run for about 3 minutes. Heat is insane. I now can only run it with 442 prop if I wanna complete a 5 lap run and speeds are 40-42mph. Yet no one can explain, and no one wants to backup a perhaps faulty or weak motor. I have recently purchased a Neu and will give it a try. There is a thread on this forum where a person used a bj motor on 6s to get his SV to 52mph.

http://forums.offshoreelectrics.com/...ead.php?t=4449

Now take that blackjack motor that ran 52mph on 6s and put it in a 33" boat and see what it does........

[ED66677]

Kwiktsi, if you want long run time you have to reduce amp draw, no matter if running 3 or 6S, at same input power, 6S will make so that your motor (with appropriate KV) draw twice as less amp that under 3S, as Steven said, under 3S even at same input power, rpm will be so low that you'll never get to a descent speed!

[kwiktsi]

12xl will be great with the 6s power. The problem will be the 3s. On 3s you will wont have enough rpm. You can compensate with the larger prop, but than you get to a point where the amps go up and you see no difference in speed.

The voltage difference between 3s and 6s is so large the boat will either be in the low 20's or high 30's.

Yeah, that's what I was thinking after I did the math- even with a bigger prop, 16-17kRPM's isn't going to do much. So what do you think would be a good motor choice for this boat running 6S 20C 5400 packs (Venom packs though, so it can't be too hot of a motor or they'll nuke lol) that will give mid-upper 30's for speed and have decent run time? I'm going to go give it a shot today again on the stock motor with an X438 (stock prop was 44mm with 66mm total pitch- huge prop for a smaller 2700kv motor, even on 3S IMHO). Even an X445 would have been better! If I get ok speed and good run time out of it on 3S2p with 2700kv motor, I'll leave it alone. If not, I'll go with an XL and just prop up or down depending on what my goals are.

What do you think of going up to even a 13XL with 6S and running an X438 or so for sport and 445 or so for getting a bit more speed- think that will work better than my 3S and 6S idea? Thinking the 438 will give good run time and be much faster than the 12xl on 3S and then the motor has the torque to pull the 445+ for a bit more speed. Just tossing ideas out there- hard to make it dual purpose like I want .

By the way I just noticed how we hijacked your thread. I will try to clean this up. Sorry

Don't worry about it, doesn't bother me in the least- I'm just reading and learning :).

[kwiktsi]

OK, did some more running today- with an X438, 3S2P and the stock motor the boat goes pretty well, temps stay low (100 to 1-teens on everything at the hottest) and I get damn good run time as well. I ran it for 30 minutes making several laps, bringing it in for a temp check and some tweaking and tossing it back in again. Took some playing around with CG and a little tweak to the trim tabs as it liked to chine walk at speed, but got it pretty good now, I'll just do some more tweaking next time out to perfect it. The boat handles very well- carves the turns like it is on rails! If I had to guess, I'd say it is lower to mid 30's and gave me at least 8-10 minutes total run time, if not more. I just don't know if the temps will stay in check for 10 minutes continuous usage. As time goes on, I'll make longer runs in between checks to see how she does.

Overall, I'm very happy with the quality and performance of this boat in stock form- but DO NOT use the stock prop (at least not on 3S) and DO NOT listen when they say it can handle 6S- it took some work to get it on 3S comfortably with the motor that is in it.

I actually pulled the "battery" tray out today and made a smaller tray since I only have my ESC there. Looks much cleaner like this.

I do have a question about the tabs since I've never used "split" trim tabs before- is it better to bring them both down together or just use one or the other? If just one, should I use just the inners or just the outers?