09-05-2005, 10:31 PM | #1 |
Pebble Pounder Join Date: Apr 2005 Location: i'm not sure
Posts: 117
| brushless systems
Ok this is not for a crawler but, a custom e revo. I was woundering witch system to get. the truck will probaply weigh 9.5 pound. My goal was to get the truch to go really fast and have A LOT of torque. I want it to do at least 35-50. As far as torque it want it to pull it self + 10-15 pound extra. The motor I was looking at was the feigao 10L. I not sure about the esc though. running on two 7.4v li po batts. The question is will this work good for what I want and want esc. This thread was written late at night and i'm tired so sorry for the spelling. |
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09-06-2005, 10:55 AM | #2 |
owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down!
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dammit my post got deleted. in summery.. pulling 25 pounds at 50 mph isnt too good of a goal unless you arent afraid of using 8 pounds of batteries. the 10L might be able to do 30 mph for short periods as long as you watch the heat. we are talking like 15 second bursts though. 25 pounds at ten mph is doable, but not 35 with all that weight. if you are just running the e-revo weight then the 9L is your best bet. on four cell lipo 50mph should be cake with the right tires. the 10L will give you wiggle room for your weight, but it will want 5 cell S lipo to be fast. what lipo are you using that will take the amp draw? esc.... for buy it now tech, the mgm compro 125 or 180 is the best bet. if you are willing to wait the castle mamba 120 will be killer at a great price. no word on release yet. |
09-06-2005, 11:39 AM | #3 |
Pebble Pounder Join Date: Apr 2005 Location: England
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wel has already been done - not sure on speeds but this is the set-up they use http://home.comcast.net/~milemarkers/E-Revo.htm they use an 8L |
09-06-2005, 03:52 PM | #4 |
owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down!
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lipo's and 8L isnt easily possible. the amp draw is too high. matched nimh is a must as well. the 10L will take about any cheap pack and still preform well on 18 cells. matched is much better (on any motor), but the 8L HAS to have matched cells to perform better than decent.
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09-06-2005, 04:12 PM | #5 |
Pebble Pounder Join Date: Apr 2005 Location: i'm not sure
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Revised gaols: any constat speed between 35-50. I'll just focus on that right know.
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09-06-2005, 06:27 PM | #6 |
owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down!
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if you want room for an all aluminum truck, go with the 10L. if you are gonna keep it lighter, the 9L will suit you well. if you want to use only 12-14 matched cells, get the 8L. the 8L works best for racing, and the 9L is better for bashing.
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09-06-2005, 07:48 PM | #7 |
RCC Addict Join Date: Dec 2004 Location: HELL.....
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i have found a 9L is an ideal motor for an average 9-10lbish truck. i ran a 9L in my bl savage and a friend has a 9L in his bl revo and both were stout to say the least. but if you are serious about power, an xl is the only way to go. i used to be someone that believed that there is such a thing as "enough power" then i built this and have been big blocks only ever since. |
09-06-2005, 10:02 PM | #8 |
Pebble Pounder Join Date: Apr 2005 Location: i'm not sure
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Who else do you know that has another bl revo? Like screen name on other websites?
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09-07-2005, 06:15 AM | #9 |
Newbie Join Date: Aug 2005 Location: SW Burbs
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rchippie over at UE is supposed to be converting his Revo...
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09-07-2005, 04:47 PM | #10 |
RCC Addict Join Date: Dec 2004 Location: HELL.....
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i built a bl savage,and there was another guy i saw online somewhere that did it, and hippies revo is now complete. runs pretty good from what he tells me. i havent seen it myself yet
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09-07-2005, 04:59 PM | #11 |
Newbie Join Date: May 2005 Location: haverhill
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Just use the HV-maxx system from navak, 1.it has godly power and speed. 2.it will except 1 or 2 bat packs and in conclusion i have one in my e-maxx and the trainy is melted and the stock driveshafts are like tooth pick for that system, but the system is a little expensive it will cost u about $280 but trust me it will work
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09-07-2005, 06:53 PM | #12 | |
owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down!
Posts: 20,290
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the 9L worked great in my emaxx, but he was talking about pulling things so the 10L was my gut reaction. if you got an xl can motor all i can say is whoa. the biggest problem becomes feeding the beast, and then makeing everything bullitproof. its really great having some more brushless people here! rockcrawling needs its good dose of power. | |
09-07-2005, 09:11 PM | #13 |
Pebble Pounder Join Date: Apr 2005 Location: i'm not sure
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i think ive figured out witch motor i'm going to run. The feigao 8xl. What i've read it use up to 20 cells! I was thinking of running 2 7.4v(=14.4v)or 2 11.1 (=22.2v)lipo's. will th 11.1v lipo's work?
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09-07-2005, 10:45 PM | #14 |
owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down!
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that motor is rated for 83 amps, so it will pull near 100 amps under acceleration for more than a few seconds. i dont know of any lipos that will take near that load, and you would have to have matched packs of any sort of battery.
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09-08-2005, 07:24 AM | #15 | |
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the novak is very convenient and it is sensored, so your truck wont do the jitter dance as much, but it doesnt hold a candle to other power setups. the xl is THE choice for power, but does come with a huge appetite for curent | |
09-08-2005, 04:57 PM | #16 |
Pebble Pounder Join Date: Apr 2005 Location: Australia
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the few savage conversions i've seen seem to have the best results with the plettenburg BL, i think from memory it was the 800watt version, i could be wrong, if you look in ebay for savage conversion kits the seller has a reccomendations list for BL's, the plettenburg is listed on there, they look to be extremely capable but big $$$$ from what i remember.
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09-08-2005, 05:14 PM | #17 |
RCC Addict Join Date: Dec 2004 Location: HELL.....
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ya the pletty is a heck of a motor, but it is probably the most expensive motor out there and requires a HUGE amount of current. we have had better success with standard type motors(feigo, etc) pound for pound. bang for the buck puts the pletty out here is a pic of my savage setup, complete with mech brakes and auto 2 speed |
09-08-2005, 07:40 PM | #18 |
Pebble Pounder Join Date: Apr 2005 Location: i'm not sure
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ok. I'm going with nicds then. I've found a way to mount 20 of them on the revo chassis without cuting to much. I have a cad file of the batt configure ation. i just need someone to host it. Also any idea on what runtimes I might get? The bats i would be using would be gp3300, and the 8xl. Last edited by ttrmike; 09-08-2005 at 08:04 PM. |
09-09-2005, 07:19 PM | #19 |
owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down!
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what do you really want this truck to do? if its just a basher i say get the 9L. if you really want the extra weight and torque go with an xl can. i got 20 minutes with my 9L on 12 unmatched 3000 cells. it was about 35mph or a tid bit faster. 14 cells would be past 40 mph, and 16 cells would be pretty nuts as long as you wateched the heat. |
09-09-2005, 08:21 PM | #20 |
Pebble Pounder Join Date: Apr 2005 Location: i'm not sure
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I'll mostly bash, maybe some racing.I would like to do 40+ with it. I not sure if I could get it that high. So i quess I'll go 9l. When you said temps how hot would it get and about how fast would it get hot on full throttle. I now you already answered this question on esc's but are there anyothers out there that will work good?
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