RE: cheap boat (rtr or kit could be fine) to put a 700 in?  
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: none
  Printable Version
       

All Forums >> RC Boats >> Speed - Electric >> RE: cheap boat (rtr or kit could be fine) to put a 700 in?
Page: <<   < prev  1 [2]

Login
Message << Older Topic   Newer Topic >>
RE: cheap boat (rtr or kit could be fine) to put a 700 in? - 3/23/2004 9:10:57 AM   
pompebled


 

Posts: 1966
Joined: 1/31/2004
From: Sneek, NETHERLANDS
Status: offline 		Hi Zonda!

I think you're making way too much of it.....

If I am correct the length of your motor is about 60mm, right? 66mm is possible too, than it's the more powerful version.

The plastic end, where the brush holders and the rear bearing are, mostly indicates, that it's a type with Ferrite magnets, the most common variety. Mabuchi produces this, and other, motors by the millions, modelshops put on their own sticker, give it a fancy name and presto, they're three (or five) times the normal price.

To give you an indication of the difference between Ferrite and Neodym magnets; I run my mono 2 on 12 cells at 40 Kph for 6-7 minutes full throttle.
I've also run it with a 700 ferrite short can motor, the running time is close to 20 minutes, full throttle, speed about 25-30 Kph.
I ran this setup last winter, man, it were the longest 20 minutes ever, I was freezing, only had one thumb out of my jacket to steer....
I think your motor will perform similar, on how many cells, will be trial and error.

ESC:

You need one that can handle 12-14 cells ( so you can use it in future boats) and about 35-40 Ah continuously, a ESC for electric flight will do just fine.
If you're confused, I can search the web for ESC, that will do, that are available for you. There are some small manufacturers in Germany and the Tchech Republic who make excellent ESC for boats and planes at very reasonable prices, but I have no idea of the shipping costs, If you want to know, I'll inquire.

It's always good to get well informed.

Greetings, Jan.

(in reply to ZondaC12)
       Post #: 26

RE: cheap boat (rtr or kit could be fine) to put a 700 in? - 3/24/2004 12:21:47 AM   
ZondaC12


 

Posts: 149
Joined: 3/14/2004
From: Guilderland, NY, USA
Status: offline 		ive attached pics of the motor. the large par of the motor is 60mm long, is that the part i should be measuring, or should i include the small round bulges at the ends? so i could get an esc that supports 12-14 cells and run 8 cells like you suggested before with that esc?

Attachments
Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize

(in reply to pompebled)
       Post #: 27

RE: cheap boat (rtr or kit could be fine) to put a 700 in? - 3/24/2004 9:01:26 AM   
pompebled


 

Posts: 1966
Joined: 1/31/2004
From: Sneek, NETHERLANDS
Status: offline 		Yep, that's the one!

Should work well in the boatsize you have in mind, on a submerged drive it will take a Xprop ranging from 36 - 42 mm.

Yep on the ESC too, if you find one with BEC, take that one, it saves you the receiver batteries (which always seem to be dead at the most inconvenient moments) and some additional weight.
If you just want to go fast, a flight ESC will do, if you want to maneuver aswell, you'll need one with reverse.

Greetings, Jan.

(in reply to ZondaC12)
       Post #: 28

RE: cheap boat (rtr or kit could be fine) to put a 700 in? - 3/24/2004 1:15:28 PM   
ZondaC12


 

Posts: 149
Joined: 3/14/2004
From: Guilderland, NY, USA
Status: offline 		ok so how about those CEN aqua jet boats? will its esc handle this? will i need the 775 version? or will the 550 version's esc handle it? remember like u said i should use 8 cells on this, so im guesing the 775 version is out of the question right, because thats 12-14 cells right? or maybe what would u reccomend for amperage rating? could i just get a normal cheap reversible esc like the traxxas xl-1 or one of those cheap duratrax intellispeed things?

(in reply to pompebled)
       Post #: 29

RE: cheap boat (rtr or kit could be fine) to put a 700 in? - 3/24/2004 5:10:03 PM   
CsChuck14



Posts: 63
Joined: 3/19/2004
From: birmingham, AL, USA
Status: offline 		id go with traxxas, they're pretty cheap, but very good and durable

_____________________________

xxx-nt, tb02

(in reply to ZondaC12)
       Post #: 30

RE: cheap boat (rtr or kit could be fine) to put a 700 in? - 3/24/2004 5:42:01 PM   
pompebled


 

Posts: 1966
Joined: 1/31/2004
From: Sneek, NETHERLANDS
Status: offline 		Hi Zonda,

The ESC that comes with the 775 motor will handle your motor just fine, the 12-14 cells is the maximum amount of cells it will handle, not the minimum required number.
Most ESC in that category will handle 6-14 cells.

If the 550 version will cope with (up to) 8 cells and about 20 Ah continuously, that one will do as well.

The very long running time I mentioned above (in my mono 2 hull) gives a load of around 10 Ah, so if you take a ESC with some reserve, it will run just fine.

I'll post a pic of the ESC I run later this evening.

Gotta run, Jan.

Attachments
Click to see fullsize image.
Click for fullsize


< Message edited by pompebled -- 3/24/2004 9:47:08 PM >

(in reply to ZondaC12)
       Post #: 31

Page:   <<   < prev  1 [2]
All Forums >> RC Boats >> Speed - Electric >> RE: cheap boat (rtr or kit could be fine) to put a 700 in?
Page: <<   < prev  1 [2]





Jump to:


Google 



Search | Marketplace | Event Calendar | Local Clubs | Magazine | Product Ratings | New Products | Discussion Forums

Photo Gallery | Member Video Posts | RCU Video Gallery | Instructor Search | Field|Track|Marina Search

Advertisers | Hobby Vendor Resources | Rate Manufacturers | Sign In/Sign Up

SITE MAP!   : :   FORUM RULES

© 2001 - 2007 24-7 RC, LLC, all rights reserved.

Charities we support that also need your help
Yorkie Rescue | Humane Society | ASPCA | Crohn's-Colitis America

Kaango.com Classifieds

0.625RCU2