Jonathan Lewzey Posted November 29, 2007 Share Posted November 29, 2007 Looking to power my funjet on a 4s pack. Any suggestions on motors, ESCs, etcWeight of model 550grams, about 80cm span. I was thinking about one of the vortex inrunners Quote Link to comment Share on other sites More sharing options...
Dean Williams Posted August 25, 2008 Share Posted August 25, 2008 you could try a het 2w motor with a 60amp esc with a 4s pack 2500 and get more power that way sould be bolistic so take care Quote Link to comment Share on other sites More sharing options...
Jonathan Lewzey Posted August 26, 2008 Author Share Posted August 26, 2008 Sorry dean, but i did post this thread almost a year ago and when no one replied, i rephrased it around a 3s pack. i've now been flying the funjet for 6 months on a 3s and i'm more likely to upgrade to 2.4 at the moment. Quote Link to comment Share on other sites More sharing options...
Tom Foreman Posted October 21, 2008 Share Posted October 21, 2008 I have a spare Tornado 2W motor and a Castle Creations 45A ESC, maybe I should put it in a Funjet running on a 4S1p 2600, should be good for 450W . The battery weighs 300g and the motor 76g, will I have any CoG problems?Cheers.Tom Quote Link to comment Share on other sites More sharing options...
Keith Lewzey Posted October 22, 2008 Share Posted October 22, 2008 Jonathan's Funjet runs on a 2200 pack that weighs about 200g & a motor that weighs 50g so the combo your suggesting well work if you can get the pack in width wise. There is plenty of room length wise in a Funjet fus so adjusting the CoG shouldn't be too much problem.Anything to add to your old mans comments Jono? Keith Quote Link to comment Share on other sites More sharing options...
Jonathan Lewzey Posted October 22, 2008 Author Share Posted October 22, 2008 Not much, just a bit confused as the what a 2W motor is. W usually means watts but this obviously isn't the case. I think the design will take the extra weight it glides well especially when light. Adding weight at the back and front is fine, cos the CG usually stays in the same place. The increased weight won't catch you out on the stall either. Just one more thing: more weight and only a bit more power (my funjet peaks at 400w) doesn't neccesarily make it fly better. Quote Link to comment Share on other sites More sharing options...
Keith Lewzey Posted October 22, 2008 Share Posted October 22, 2008 The model is supposed to take up to a 3200 pack if my memory serves me right. The issue here really is power to weight ratio which I think is what you mean Jono. I agree with you Jono about what is a 2W motor, can you clarify Tom? Keith Quote Link to comment Share on other sites More sharing options...
Tom Foreman Posted October 22, 2008 Share Posted October 22, 2008 Cheers for the info, I re-checked the motor last night and it is a HET 2W copy (Tornado 400). I used it in a MPX Twister EDF, but had some problems and changed it for a genuine HET 2W-20. In the Twister Jet it pulled 450W on 4S1p, but I could always try it on 3s1p in the funjet if I could get a better power to weight ratio. So just need to sneak another box past the missus and should have one soon Tom Quote Link to comment Share on other sites More sharing options...
Jonathan Lewzey Posted October 22, 2008 Author Share Posted October 22, 2008 A 400 size inrunner should be fine. Try both packs, but go for a 3s first if you're getting enough power - funjets are faster than twisters! Put a small prop on it and if you've got a watt meter, use it to find the best setup. If you've got any HS 55 servos lying around they fit perfectly Quote Link to comment Share on other sites More sharing options...
Keith Lewzey Posted October 22, 2008 Share Posted October 22, 2008 The original recommended setup was less powerful than either Jono's or what you are suggesting Tom.Jono's Funjet looks really good in the air. It certainly turns heads among the more traditional modelers at our patch on a fast pass Bang for buck we think it's up there with the best. Keith Quote Link to comment Share on other sites More sharing options...
erwin matheeuwsen Posted December 2, 2008 Share Posted December 2, 2008 Why dont you guys stick an AXXI outrunner on the back of it.... That will give you true power....And speeds beyond 250k/h..... Quote Link to comment Share on other sites More sharing options...
Jonathan Lewzey Posted December 3, 2008 Author Share Posted December 3, 2008 Because outrunners are rubbish on speed models. high speed models always use high revving motors with small diameter high pitch props. A bigger prop gives too much drag. 250 kph is ludicrous on a funjet. A 950 watt 6s funjet flies not much quicker than a 500 watt 4s one. Top speeds are around 150mph or 210kph. Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted December 3, 2008 Share Posted December 3, 2008 These days, there aseveral high Kv outrunners...iundeed the motor of choice for several EDF models. Its only a question of using a low wind count to get the revs up.....whether out or inrunner, the principle is the same. Inrunners are of course easier to mount in many situs. Quote Link to comment Share on other sites More sharing options...
scott cuppello Posted December 18, 2008 Share Posted December 18, 2008 2W-20 with a 5.2x5.2 [4.75x4.75 to start] CAM prop, 2100-2500mAh 4s and you have 700w........what fun, what joy.......hope you have good eyesight.....oh, and don't even think about using less than an HS65MG! Quote Link to comment Share on other sites More sharing options...
Chris Card Posted December 18, 2008 Share Posted December 18, 2008 I run a 2W-20 on 3S with a 4.75 x 4.75 prop and that drains around 45A - will the motor really take 4S and a bigger prop? surely that's going to fry the motor? Quote Link to comment Share on other sites More sharing options...
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