prop ? for bj26

[bagedtaco]

just picked up a castle 1512 2650kv from the swap forum for a bj26. i'm running the bj 26 nitro hardware on it but need to get a prob for it. i'm currently running a turnigy 120a esc but will upgrade it to a 180a or 200a to run 6s's i'd like to run 4s with the 120a and need a prop for that.

can 1 of you prop. gods help me out.

Troy

[syncronized77]

Not sure...but isn't 2650kv high for running 6S? Even a little high for 4S?

[Diesel6401]

just picked up a castle 1512 2650kv from the swap forum for a bj26. i'm running the bj 26 nitro hardware on it but need to get a prob for it. i'm currently running a turnigy 120a esc but will upgrade it to a 180a or 200a to run 6s's i'd like to run 4s with the 120a and need a prop for that.

can 1 of you prop. gods help me out.

Troy

Your gonna put 6s on a 2650 motor. That should = in about 3 seconds. Thats very close to 60k rpm. Your target range for sport boating and a BJ for that matter should be 26k-28k, your gonna double that. That seriously is NOT a good idea your blow your motor and esc very VERY quickly! Even 4s on that motor is pushing almost 40k rpm. I don't think that is the best setup for your situation. JMO of course.

[GeoVW72]

castle themselves don't recommend pushing 6s through that motor.
a lower kv motor would be better. I believe a 642 is the usual recommend starting point

[blackcat26]

Just like the other guys just said, 6s is too much for that motor. I love high rpm's but those will be costly high.....I would run that motor on 4s max and try something small like a x438 or m440 would be a good start. At very minimum I would use a 120a esc and better yet a 150a or 180a to be safe.

[Dangerous_Toys]

Your gonna put 6s on a 2650 motor. That should = in about 3 seconds. Thats very close to 60k rpm. Your target range for sport boating and a BJ for that matter should be 26k-28k, your gonna double that. That seriously is NOT a good idea your blow your motor and esc very VERY quickly! Even 4s on that motor is pushing almost 40k rpm. I don't think that is the best setup for your situation. JMO of course.

[keithbradley]

You could use a X455, run it on 6s, and run it upside down as an air boat...

If you're gonna put the prop in the water I wouldnt run that esc, even on 4s. You might get a way with it for a while if you run a small prop like blackcat suggested. With a little better esc that motor would probably run well in that boat on 3s with a prather s220. Maybe 4s with a s215 if you really wanna rip...just my guess.

[Diesel6401]

My suggestion is to either sale motor for a different kv rating. Like the 1512 1800kv would be perfect on 4s with the esc you have and x642.

You could use a X455, run it on 6s, and run it upside down as an air boat...

If you're gonna put the prop in the water I wouldnt run that esc, even on 4s. You might get a way with it for a while if you run a small prop like blackcat suggested. With a little better esc that motor would probably run well in that boat on 3s with a prather s220. Maybe 4s with a s215 if you really wanna rip...just my guess.

[JMSCARD]

Just like the other guys just said, 6s is too much for that motor. I love high rpm's but those will be costly high.....I would run that motor on 4s max and try something small like a x438 or m440 would be a good start. At very minimum I would use a 120a esc and better yet a 150a or 180a to be safe.

I agree with this :) I would go with a bigger esc no question... but I believe the prop suggestions are spot on.... you may end up at a x440... but you are gonna have some rpm for sure....and NO more then 4s... it will be plenty fast with that no question... providing you don't smoke your esc... that motor is capable of some amps... I wouldn't run the 120 amper... get yourself a turnigy/seaking 180 and you will have alot more headroom....

[bagedtaco]

lol.... hey if nothing it makes for good conversation! i'll keep it @3s. i do have a 1512 1800kv coming too.

i'll order a larger esc and let u guys kno. i'll get a couple suggested props and go from there.

[bagedtaco]

ok.. i put the 1512 2650 in the bj26 and ran it on 3s1p and i'm not getting much speed out of it. i went to 4s2p and got a bit more. i went wot with on both battery setups and i'm getting maybe 25+-mph. lots slower then the stock setup on 4s2p and 6s2p. i didn't want to try 6s2p on the 1512 2650 as what you guys said above. i'm running a brass prop and don't know what size it is as it came with the cat used.

What should i do next. it doesn't sound like it's turning high rpm's, and sounds nothing like the stock bj26 motor on 6s's.

running a seaking 180a with all the stock program settings. haven't changes timing yet, as i didn't fully understand what it did.

[Diesel6401]

ok.. i put the 1512 2650 in the bj26 and ran it on 3s1p and i'm not getting much speed out of it. i went to 4s2p and got a bit more. i went wot with on both battery setups and i'm getting maybe 25+-mph. lots slower then the stock setup on 4s2p and 6s2p. i didn't want to try 6s2p on the 1512 2650 as what you guys said above. i'm running a brass prop and don't know what size it is as it came with the cat used.

What should i do next. it doesn't sound like it's turning high rpm's, and sounds nothing like the stock bj26 motor on 6s's.

running a seaking 180a with all the stock program settings. haven't changes timing yet, as i didn't fully understand what it did.

The motor choice is all wrong, and running on a prop you don't know the size of is just asking for even more problems. I HONESTLY think you need to re-think your setup. I just bought another BJ yesterday ( I missed my old one I sold so got another) and I plane on using a 1800kv outrunner on 4s and a 1500kv outrunner on 5s.

[syncronized77]

Yeah...I'm with Diesel on this one. You may want to start from scratch in regards to what your plans are with the BJ26. It's a great motor you got....but the KV seems a little high

[bagedtaco]

i've got a 1512 1800kv too. I'll put that in it and try. I'll run 6s on it and see. but i'm thinking i'm not geting the rpm's from the esc. these things aren't the easiest to program listening to beeps and tones.

as far as the prop. I was getting 45+ with the stock bj26 setup on 6s2p. it has some markings on the nut side of it, but i can't make out what it says. How else can i tell?

[bagedtaco]

what else can i put the 1512 2650kv in and make it scream?