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RE: The Unofficial all things Jet drive thread - 7/17/2008 12:38:51 AM   
Dr. Gravity


 

Posts: 4
Joined: 5/4/2008
From: Milton, ON, CANADA
Status: offline 		Size of can, well couldn't tell ya.. ill have too look up the site where i got the motor from and post it on here, maybe you will be able to find that out, when it comes to the RC stuff im still very green. And Yes it is the same set up as the Vid of Head's Villian..

(in reply to DRAGONFIRE81M)
       Post #: 1401

RE: The Unofficial all things Jet drive thread - 7/17/2008 12:44:37 AM   
DRAGONFIRE81M


 

Posts: 1164
Joined: 1/9/2007
From: PORTLAND, TN, USA
Status: offline 		is it this one http://cgi.ebay.com/RC-Smart-Model-3900-RPM-V-KV-Inrunner-Brushless-Motor_W0QQitemZ300237643264QQihZ020QQcategoryZ34055QQtcZphotoQQcmdZViewItemQQ_trksidZp1742.m153.l1262

if it is its the same size can as head but longer

if it was me ill get this one for more tq this is the size i have but at 3500kv http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=4200&Product_Name=HXT_2835_(380S)_3900kv_Brushless_Inrunner

< Message edited by DRAGONFIRE81M -- 7/17/2008 12:47:51 AM >

(in reply to Dr. Gravity)
       Post #: 1402

RE: The Unofficial all things Jet drive thread - 7/17/2008 2:20:40 AM   
headhunter23


 

Posts: 819
Joined: 8/7/2007
From: Waterloo, ON, CANADA
Status: offline 		they're running this motor.https://www.unitedhobbies.com/UNITEDHOBBIES/store/uh_viewItem.asp?idProduct=4200

put this on an multiplex funjet, 160km/hr. schweet.

(in reply to DRAGONFIRE81M)
       Post #: 1403

RE: The Unofficial all things Jet drive thread - 7/17/2008 2:30:54 AM   
j.m.


 

Posts: 2447
Joined: 9/20/2007
From: Raleigh, NC, USA
Status: offline 		what size lipo are you running?

_____________________________

!Signature your in it put, this read to time the took you If
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(in reply to DRAGONFIRE81M)
       Post #: 1404

RE: The Unofficial all things Jet drive thread - 7/17/2008 4:27:11 AM   
headhunter23


 

Posts: 819
Joined: 8/7/2007
From: Waterloo, ON, CANADA
Status: offline 		They're both running single packs, the one guy is using 2150 2s and the other guys is running 1700mah 2s. They had changed the servo in the back to a heavier one and have said it's made a difference in running better, less losing prime.

Ivan.

(in reply to j.m.)
       Post #: 1405

RE: The Unofficial all things Jet drive thread - 7/17/2008 6:06:35 AM   
j.m.


 

Posts: 2447
Joined: 9/20/2007
From: Raleigh, NC, USA
Status: offline 		but i could keep a small servo and just have a bigger battery, right?

I found a couple of these boats on ebay for around $25. Probably going to get one.

Does the drive need replacing?
Or is it just like the graupner mini?

_____________________________

!Signature your in it put, this read to time the took you If
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(in reply to headhunter23)
       Post #: 1406

RE: The Unofficial all things Jet drive thread - 7/17/2008 10:01:28 AM   
jacob711


 

Posts: 502
Joined: 11/16/2005
From: perth, AUSTRALIA
Status: online 		ok thanks guys, i just remembered that i have 2x2s 2100mah lipos wired in series (14.8v) for my micro hydro so could i use them in the jet boat with this motor and esc combo http://cgi.ebay.com/RC-Smart-Model-2900-KV-Brushless-Motor-30A-ESC_W0QQitemZ270247852517QQihZ017QQcategoryZ34055QQtcZphotoQQcmdZViewItem

also that motor has a 2mm shaft so will it bolt up to the jet drive or do i need a new coupler

could i get some shaft the same size as the jet and get some props with different pitch and make impellers to try out, what size is the jet drive shaft anyway

i read something about a brass bushing mod, i cant find it again so could someone tell me about it, what is there for a bushing standard, i will be spinning around 40,000 rpm so i want it to last

and lastly is the stock steering servo good or do i need a better one, is this one good it says 1.98kg/cm or can i just use a standard size one http://cgi.ebay.com/2-x-SG90-9g-Mini-RC-Model-Micro-Servo-for-Airplane_W0QQitemZ280235724832QQihZ018QQcategoryZ34056QQtcZphotoQQcmdZViewItemQQ_trksidZp1742.m153.l1262

Thanks, Jacob

< Message edited by jacob711 -- 7/17/2008 10:08:25 AM >

(in reply to j.m.)
       Post #: 1407

RE: The Unofficial all things Jet drive thread - 7/17/2008 11:31:56 AM   
DRAGONFIRE81M


 

Posts: 1164
Joined: 1/9/2007
From: PORTLAND, TN, USA
Status: offline 		yes you could run it on that battery is rated for 18v and the motor is a direct replacement the ujoint is a 2mm and the impeller shaft is 2mm also . i wouldnt do the brass sleve i thank it puts to much drag . i did a bearing upgrade to the input side insted of running on plastic . there is a part# in here 2 times i have the # at home but im at work know . maybe headhunter has it he was the last one i told . and ill look back to find it . if you wont to make custem impellers youll need some stanless 2mm rod and some props and cut them down to fit . has to the stock servo your going to be tack it out to . its vary toy just left and right . theres no inbetween and pluse it wont work with your radio system . yes thats a good servo . i use the hitech 55

(in reply to jacob711)
       Post #: 1408

RE: The Unofficial all things Jet drive thread - 7/17/2008 11:42:40 AM   
DRAGONFIRE81M


 

Posts: 1164
Joined: 1/9/2007
From: PORTLAND, TN, USA
Status: offline
quote:

ORIGINAL: DRAGONFIRE81M

i just looked at boca's site and i guess why he got me matel shilds . they dont make the rubber ones . theres the site with that bearing and its the first two that say what the shildsing is my bad http://www.bocabearings.com/main1.aspx?p=quicksearchbearing but they dont leak by the way


ok they do have it in red teflon X-MR103-EPS

just look at there site and type in 3x10x4 mm

found it again here you go

(in reply to DRAGONFIRE81M)
       Post #: 1409

RE: The Unofficial all things Jet drive thread - 7/17/2008 3:59:07 PM   
j.m.


 

Posts: 2447
Joined: 9/20/2007
From: Raleigh, NC, USA
Status: offline 		there are servo's, esc's and motors on hobby. city dot com.

Servo's start at $2.50
good esc: 40A for $35 (it wouldn't hurt, since it's a boat, not an airplane)
motor: 28-47 4900 Kv
3s lipo or lower.
(the ebay thing won't take 4s anyway.)

Sorry, you can't post links directly to hobby city.

_____________________________

!Signature your in it put, this read to time the took you If
If the World didn''t suck, then we would just fall off.

(in reply to DRAGONFIRE81M)
       Post #: 1410

RE: The Unofficial all things Jet drive thread - 7/17/2008 4:11:21 PM   
DRAGONFIRE81M


 

Posts: 1164
Joined: 1/9/2007
From: PORTLAND, TN, USA
Status: offline 		a good rule of thuem is to get dubble the amp rate on the motor . if its rated for 20 then get a 40. if you can aford it . if not go 10 more . i started out run a 20amp esc on the heli max 2580kvin my white nockoff . now it was a 30amp . and it stays cooler

what ebay thing ? j.m.


< Message edited by DRAGONFIRE81M -- 7/17/2008 4:14:28 PM >

(in reply to j.m.)
       Post #: 1411

RE: The Unofficial all things Jet drive thread - 7/17/2008 5:07:38 PM   
jacob711


 

Posts: 502
Joined: 11/16/2005
From: perth, AUSTRALIA
Status: online 		i would really rather run this on 4s so i can get the boat balanced correctly and i dont want to buy another battery, so i think i will use the motor and esc dragonfire chose

(in reply to DRAGONFIRE81M)
       Post #: 1412

RE: The Unofficial all things Jet drive thread - 7/17/2008 6:08:50 PM   
headhunter23


 

Posts: 819
Joined: 8/7/2007
From: Waterloo, ON, CANADA
Status: offline 		ur not using 4900rpm/kv right? too high, someone had tried it, hot.

(in reply to jacob711)
       Post #: 1413

RE: The Unofficial all things Jet drive thread - 7/17/2008 6:11:52 PM   
j.m.