prop and motor setup

[rad35]

ok i agree with shawn i was just trying to understand the difference in kv's and prop size shawn boat go good will probly use a setup like that. I am just throwing out some senarios to try and understand better i know the prop and motor size may no be perfect. Fluid i may be somewhat new at this but everyone has to start somewhere i love a good challenge has anybody tryed a 65 in. mono whit 4 outboard's LOL .maybe next challenge?

[dasboata]

ok i agree with shawn i was just trying to understand the difference in kv's and prop size shawn boat go good will probly use a setup like that. I am just throwing out some senarios to try and understand better i know the prop and motor size may no be perfect. Fluid i may be somewhat new at this but everyone has to start somewhere i love a good challenge has anybody tryed a 65 in. mono whit 4 outboard's LOL .maybe next challenge?

I really think you should just buy a factory RTR and learn and mod from that

[rad35]

shawn thank you for the good info it is greatly appreciated i was wondering if i should use cont. ratings or max ratings to calculate this stuff.

thanks again

[rad35]

I have a traxxas spartan that i have been playing with for a couple years cc1515 2200 kv octura 645 prop gps speed 72mph just trying something new dont know as much as some of you guys but im trying to figure it out dont have any boat clubs in my area so doing the best i can. my vx rocket hull had twin drives installed when it was given to me so trying to make the best of it.20161023_153002_001 (360x640).jpg pic of boat.

[rad35]

I have a traxxas spartan that i have been playing with for a couple years cc1515 2200 kv octura 645 prop gps speed 72mph just trying something new dont know as much as some of you guys but im trying to figure it out dont have any boat clubs in my area so doing the best i can. my vx rocket hull had twin drives installed when it was given to me so trying to make the best of it.20161023_153002_001 (360x640).jpg pic of boat.

[rad35]

opps didnt mean to hit that twice.
shawn what kv are you running on your boat?

[srislash]

opps didnt mean to hit that twice.
shawn what kv are you running on your boat?

My twin Lazer runs 1180kv motors on 8s

And ok now that we know why you want a twin setup recommendation, any chance of a pic of the back? I am curious as to the hardware. I have not seen that hull. I just want to make sure it is all good. Was this thing gas/nitro before?

[rad35]

here is a pic of the back20161027_145338 (360x640).jpg thanks again for the help.

[rad35]

this was originally setup for a gas motor it never had a motor in it. hope u can see the pic it's kinda small don't know how to make it bigger.

[rad35]

i was looking on ose sight they show a tp 4050 1330 kv or a 4060 1050 kv then go's to 1650 dont see a 1180 kv witch would you recommend for 8's.

[srislash]

Well there is a 4050 10D wind at 1180kv and a 6Y at 1050 on TP's site.
Also a 1280 Y wind as well as the 1050 Kv on TP's USA site in stock. I think I would go 1050kv. A Y wind will yield better runtime where a D has more torque, FYI.

[Fluid]

Actually there is almost zero difference it performance between Wye and Delta winds. The misconception that Wye motors are amp hogs etc. is based on comparing motors with different Kvs (the 1527/1Y versus the 1527/1.5D is a common one). Bottom line, lots of testing by high performance airplane guys has shown little to no performance/torque/amp draw difference if the Kvs are the same.

[srislash]

I stand corrected. See still learning. A never ending process in this hobby.

[rad35]

Ok think i will order a couple 1050's and a couple esc's and a selection of props. maybe i can test a little before ice sets in

thank's again for all the help! ie ( never stop learning and will never know it all )

[rad35]

another question is there an advantage to running 3 blade prop vs 2 and lift vs no low lift (x vs m) style. for my app.