RE: Unofficial
Hey guys, long time no post, just got everything working today, but the engine appears to be spinning in the shaft. (Supposed to be same size (2.3mm)http://www.hobbyking.com/hobbyking/s...erCooled_.html) Ideas?
EDIT: Resolved, well more so was never an issue, I'm blind apparently.<br type="_moz" /> |
RE: Unofficial
On the maiden (Pool test) the engine firstly was running backwards, then decided to unscrew the screw on the shaft, anyone got tips on how to get that back in?
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RE: Unofficial
With a 1.5mm hex driver?? Not sure I get the question correctly, you mean the grub screw in the coupling?
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RE: Unofficial
Yes that was exactly what I was after, I couldn't work out if it needed a hex driver or something else. thanks!
EDIT: The only issue left now is the servo arm pops off after a few minutes, this is my first hobbygrade rc venture, so if there is some way of securing the arm other than just putting it on please inform me :)<br type="_moz" /> |
RE: Unofficial
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ORIGINAL: Masman EDIT: The only issue left now is the servo arm pops off after a few minutes, this is my first hobbygrade rc venture, so if there is some way of securing the arm other than just putting it on please inform me :)<br type=''_moz'' /> |
RE: Unofficial
alright, been an eventful weekend for the tear into...
Yesterday I brought it up the beach, I even brought the charger and ran that off the car battery (worked a treat) We went up with a couple of mates, and I now have a jet boat mate in the making ;) (Just gotta order a new kit... thinking of making an Outrunner on 2S for him) After many batteries through the boat, it was sucking in water through the jet drive and it sounded horrible because the drive shaft was vibrating... In the end, I could only JUST get the boat up on plane, there was that much water/vibration happening :p I have to say, I think salt water is abrassive... compared to running in fresh water, the wear and tear is noticable Today I decided to pull the boat down and give it a good once over, new glue, grease every moving part and most importantly, do the sleeve mod! The sleve mod came out really good I reckon, I should have done that from the get go... The plastic was ground away, so much so, that I could nearly put the 1/8th inch rod in without driiling!! I've got pics of all of this, but need to get them off my camera, I'll post once I've sorted that out :) So, right now, I'm charging my batteries, to take the boat out for a test run. The boat is curing in the sun at the moment ;) Cheers Martin<br type="_moz" /> |
RE: Unofficial
I should have done that sleeve mod ages ago!! <div>The jet drive primes instantly, I can go full pelt across waves, and by the time it hits the top of the next wave, it's primed and pushing through the air to the next wave... :D</div><div>
</div><div>I also took the chance to reconfigure my ESC, which had a cut-off at 6V!! No wonder my batteries were feeling a bit rough...</div><div>I also adjusted the punch level down by 20%, and I think that combined with the jet drive mod, is what gives me prime so quickly...</div><div> </div><div>Good times :D</div><div> </div><div>Cheers</div><div>Martin</div> |
RE: Unofficial
I think sleeving the drive is the only way to go, well for me anyways... The first 3 boats that i had were terrible from factory, either bent shafts or poor alignment. So by the second i ditched stock drive shafts too and never looked back. Plus its part of the fun.
Make your mates on 3s.. |
RE: Unofficial
I will have all winter to mod my boat. Never got to maiden it do to renovating my master bath this summer myself. Took all summer but I'm very happy with the results.
So.... I really want to take your advice and do the sleeve mod but I don't know where to begin. I would love to see your pics and suggestions so I understand it fully. I will take my time and do it right this winter and be ready for some rapid fun next spring. |
RE: Unofficial
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ORIGINAL: SkR8Pn Make your mates on 3s.. He is on a bit of a budget, so an outrunner on 2S might fit the bill... Plus it'd be more interesting for me to build, as it's a different setup ;) ORIGINAL: Wheelnut I really want to take your advice and do the sleeve mod but I don't know where to begin. I would love to see your pics and suggestions so I understand it fully. This is what I used: about 20mm of 1/8th inch copper tube & Tarzan Grip Glue (shoe glue or whatever works just fine... this is what I had)
The prop is definitely the weaker link, and the blades get steadilly shortened, creating a gap between the tip of the blade and the wall of the jet pump... not ideal at all!! New prop, New drive shaft and sleeved jet drive = no water in the boat and better than factory speed/takeoff! :D I added a pic from my beach trip too :) SkR8Pn: Could you please let me know what you have replaced the driveshaft with? And how you got the prop to keep put?? Cheers Martin |
RE: Unofficial
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ORIGINAL: seehuusen SkR8Pn: Could you please let me know what you have replaced the driveshaft with? And how you got the prop to keep put?? Cheers Martin Sorry i didnt reply sooner, i've been busy machining, if you ever need couplers etc let me knowhttp://www.rcuniverse.com/forum/js/f...wink_smile.gif |
RE: Unofficial
finally received the replacement Leopard 4450 kv motor and tested it out.
there is smoke and burnt mark spotted on one of the motor cables initially, stopped for a while and continued play with no adnormality, total play time ~ 8 mins. setup : Turnigy 60A ESC + Leopard 2040 series 4450kv Motor + 2S 4000mah 40~80C Lipo + Cooling tubes so the Outrunner 4400 kv motor will be much faster than Leopard 4450kv motor although their top rpm are almost the same? ORIGINAL: sundogz ORIGINAL: spektrumFlux so the Outrunner 4450kv motor will outperform the Leopard 4450kv Motor? I suppose Outrunner motor do not need any water cooling jacket? |
RE: Unofficial
ORIGINAL: SkR8Pn Sorry i didnt reply sooner, i've been busy machining, if you ever need coupliers etc let me know |
RE: Unofficial
ORIGINAL: spektrumFlux finally received the replacement Leopard 4450 kv motor and tested it out. there is smoke and burnt mark spotted on one of the motor cables initially, stopped for a while and continued play with no adnormality, total play time ~ 8 mins. so the Outrunner 4450kv motor will outperform the Leopard 4450kv Motor? |
RE: Unofficial
ok, will probably get the Outrunner.
btw..any suggestion on where to get the 3.17-2.3 mm coupling? Great thanks :-) ORIGINAL: sundogz ORIGINAL: spektrumFlux finally received the replacement Leopard 4450 kv motor and tested it out. there is smoke and burnt mark spotted on one of the motor cables initially, stopped for a while and continued play with no adnormality, total play time ~ 8 mins. so the Outrunner 4450kv motor will outperform the Leopard 4450kv Motor? |
RE: Unofficial
ORIGINAL: sundogz ORIGINAL: SkR8Pn Sorry i didnt reply sooner, i've been busy machining, if you ever need coupliers etc let me know You have a pm matehttp://www.rcuniverse.com/forum/js/f...wink_smile.gif |
RE: Unofficial
Thx, J. :D
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RE: Unofficial
Now I'm jealous[&:] pm me too:D
I would be happy if somone could just tell me where to get couplers in the US. |
RE: Unofficial
ORIGINAL: SkR8Pn Sorry i didnt reply sooner, i've been busy machining, if you ever need couplers etc let me knowhttp://www.rcuniverse.com/forum/js/f...wink_smile.gif These "kits" look familiar, Maryborough-lad? ;) would you mind PMing me,what sort of coin would you want from a fellow forumite for one of those? :D cheers Martin<br type="_moz" /> |
RE: Unofficial
ORIGINAL: seehuusen ORIGINAL: SkR8Pn Sorry i didnt reply sooner, i've been busy machining, if you ever need couplers etc let me knowhttp://www.rcuniverse.com/forum/js/f...wink_smile.gif These "kits" look familiar, Maryborough-lad? ;) would you mind PMing me,what sort of coin would you want from a fellow forumite for one of those? :D cheers Martin<br type="_moz" /> |
RE: Unofficial
ORIGINAL: Wheelnut Now I'm jealous[&:] pm me too:D I would be happy if somone could just tell me where to get couplers in the US. |
RE: Unofficial
ORIGINAL: Wheelnut ORIGINAL: Wheelnut Now I'm jealous[&:] pm me too:D I would be happy if somone could just tell me where to get couplers in the US. Turn that frown upside down....... you have been inboxedhttp://www.rcuniverse.com/forum/js/f...wink_smile.gif |
RE: Unofficial
<div>Hey guys,</div><div></div><div>I've started gathering a list of things I need for my next tear into. I've stumbled across a new motor that I think would work wonders as a high powered Tear Into on 3S :D</div><div>The motor has an additional 160 watts of power compared to my current NQD (760 in total) and a better KV rating in my mind, should be fun :)</div><div></div><div><div>tried posting this a couple of times, so now it's just going to be a teaser :p LOL</div></div><div></div><div>Here's the list</div><div></div><div>eBay: AU$69.04</div><div><span style="white-space:pre"> </span>BL2856 3200KV Inrunner Water Cooled Brushless Motor</div><div><span style="white-space:pre"> </span>150A Water Cooled ESC 5A BEC For RC Boat</div><div>eBay: AU$6.99</div><div><span style="white-space:pre"> </span>Coupler 2.3 mm to 4 mm - Brass</div><div>eBay: AU$7.89</div><div><span style="white-space:pre"> </span>FS-GR3C 2.4Ghz 3CH Failsafe Receiver</div><div>eBay: AU$7.60</div><div><span style="white-space:pre"> </span>MG995 Servo - Metal Gear, High Speed/ Torque, Digital Servo</div><div></div><div>I'll obviously do the sleeving of the drive straight away</div><div>This one will probably also recieve a bit of paint, to try to make it look a bit like my ski boat's colour scheme</div><div></div><div>I'll report back when it all starts arriving :D</div><div></div><div>cheers</div><div>Martin</div>
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RE: Unofficial
Sounds good Martin... Even betterare the prices, nice work.
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RE: Unofficial
do kindly correct me if my understanding is incorrect for the following...<div></div><div>suggested motor kv for each types of Lipo.</div><div>2S : 3900~4450 kv Inrunner/Outrunner Motor</div><div>3S : 2900~3600 kv Inrunner/Outrunner Motor</div><div>4S : 2600~ kv Inrunner/Outrunner Motor</div><div></div><div>2S*3900 kv = 7.4*3900 = 28860 rpm</div><div>3S*3900 kv = 11.1*3900 = 43290 rpm (is it too high rpm to cause motor overheat rapidly)</div><div>what is the ideal rpm range for motor?
comparing Inrunner 4400kv vs Outrunner 4400kv motor, Outrunner will have more torque? what is the criteria to choose between Inrunner and Outrunner motor? </div><div></div><div>Thanks</div><div>Regards :-)</div> |
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