Losi xxx-4

Old 06-20-2006, 10:38 PM
  #976  
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Originally Posted by Turbo Joe
I haven't had any problems with mine...and if you recall, my 8.5/SS+ runs with your sphere thingy on the straights, no sweat.

The deal the other night was more directly related to me washing the buggy off carelessly...I got water all over the ESC...it had been working just fine for months...right up to the point I drowned it. It was a great night...got water in the throttle servo on the buggy, too...missed both mains. DOH!

It'll give me a good excuse to trade it in towards a GTB...still gonna run the 5800...

I should add the disclaimer that I'm well aware you can kick my ass driving-wise. It's just that you shouldn't be dissing the mighty 5800.

I should've put IMHO before that statement


Seriously though, I honestly don't think the 8.5 is enough for a 4wd. Even the 7.5 I drove was lacking a little. I've driven your car before and while it is decently fast, you are using lipos with the rotor upgrade. Most people won't be using the same combo...


BTW, I tried trading in a SS5800 system for a GTB last time mine went and Novak wouldn't let me...
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Old 06-20-2006, 11:00 PM
  #977  
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Don't you have some o'them fancy Lipos, too?

All hail the mighty 8.5! I'd be too scared to try something faster.
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Old 06-21-2006, 08:41 AM
  #978  
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Seriously though, I honestly don't think the 8.5 is enough for a 4wd. Go for the 6.5 for a 4wd.
i know it might sound like i am ADD or something, but let me just make sure everything is clear. the 8.5 is underpowered for a 4wd electric buggy, so a 6.5 system would be better because it has more power. therefore, you don't have to gear for power which makes the motor run cooler. am i correct?
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Old 06-21-2006, 09:14 AM
  #979  
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I think the point is that the lower winds turn more RPM, so you can gear it lower and get the same speed and it will run cooler.

I'm not so sure on the "not strong enough" theory. I think there's more to it than that and I think the temps likely have more factors than just the winds and power. Track type, driving style are sure fire variables. Erik and I drive WAY differently. He's VERY fast and he's VERY aggressive with the throttle.

I have my ZX-5 geared at 76/19 and it has only thermaled once...no cutouts whatsoever on the body, 4 minutes into the race on a warm night. Cut out the window on one side and it goes for warmups and a 10 minute main on a gas track with no sweat.

BTW-- The drive ratios b/w a XXX-4 and ZX-5 are very close, if not identical.
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Old 06-21-2006, 10:49 AM
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Originally Posted by macnkitty2002
i know it might sound like i am ADD or something, but let me just make sure everything is clear. the 8.5 is underpowered for a 4wd electric buggy, so a 6.5 system would be better because it has more power. therefore, you don't have to gear for power which makes the motor run cooler. am i correct?

Correct. Get the 6.5. Gear it around 12.00 and you will have a nice reliable system with plenty of power. If its too much for you, just turn down the EPA on the radio. One time I showed up to race 4wd mod and nobody AT ALL showed up with any kind of mod. I didnt bring my 2wd to the track, so I had to run 4wd stock. I didn't have a stock system to throw in, so I tuned my brushless system down to 65% and nobdy complained. I think the reason why they didnt complain is it wasn't fair in the first place with 4wd vs. 2wd...

Tuning down the EPA was very realistic and just felt like a slower motor...

Thus, if its too much for you at first, tune it down and then maybe gradually turn it up...
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Old 06-21-2006, 12:48 PM
  #981  
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thanks killer and Joe, all of your info really helped. now another question, how much torque and speed in a servo would be good for a 4wd electric buggy? i don't know if they are behemuths to turn or if they are relatively light and don't require much torque.
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Old 06-21-2006, 02:02 PM
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the hitec 625 works wonderful for me, plenty fast, and plenty of power. So rated around 94 oz/in @ 0.15sec for 6 volts, of course you will have 7.2 volts going to your esc, so not sure how much of this tranfers, but you might be faster and stronger. The 5625 has even more torque and speed, plus it is digital. Both can be had for ~34-40 and 45-56 respectively.
HTH
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Old 06-21-2006, 03:30 PM
  #983  
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An Airtronics 357 or 360 is hard to beat...

I use the 357. Picked it up for $20. Guy thought it was broken, but all it needed was a $1 gear
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Old 06-21-2006, 04:03 PM
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ya, i use the 5625 in my buggy steering and the 625 in the throttle. so if it is good enough for a 1/8 buggy, it must be good enough for a 4wd electric.
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Old 06-27-2006, 05:31 AM
  #985  
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Default Does the Team Orion 4800 Li-po fit in the XXX-4 G+

Hi guys,

I would like to purchase one Losi XXX-4 G+ very soon. But before, I have two questions that I would like to be answered.

1. Is the Losi XXX-4 G+ still a competitive car ? Does it have important flaws ?

2. Does the Team Orion 4800 Li-po fit in the XXX-4 G+. I'm gonna buy this battery for my sedans and I would like to know if it will fit my XXX-4 G+. Is there many modifications to do ? Any pics ?

Thanks for answering me.

Cheers.

Last edited by Blin; 06-27-2006 at 12:55 PM.
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Old 06-27-2006, 01:00 PM
  #986  
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Originally Posted by Blin
Hi guys,

I would like to purchase one Losi XXX-4 G+ very soon. But before, I have two questions that I would like to be answered.

1. Is the Losi XXX-4 G+ still a competitive car ? Does it have important flaws ?

2. Does the Team Orion 4800 Li-po fit in the XXX-4 G+. I'm gonna buy this battery for my sedans and I would like to know if it will fit my XXX-4 G+. Is there many modifications to do ? Any pics ?

Thanks for answering me.

Cheers.
UP ! UP ! UP !
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Old 06-27-2006, 02:23 PM
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Just so you know, everyone that knows anything about xxx-4s is already subscribed to the thread, so there's no reason to bump it to the top for everyone that doesn't know anything to see

The xxx-4 is competitive on smooth tracks, one's made of hardpack dirt or clay. The xx-4 is competitive on rough/rutted out tracks. There are lots of other cars out there that are probably better, but they cost upwards of 500 usually, and parts cost more when they break, plus parts are probably harder to find for those other cars. If you aren't looking to seriously race, you're best off with a Losi car. Parts are cheap, easy to find, and the cars both handle great as far as I'm concerned. Just keep track conditions in mind.

I've never had one of the lipos in the car, but I have had stick packs which are the same dimensions, so I assume you will have the same problem with the lipo. The battery strap has little bumps on the bottom (see here http://www.horizonhobby.com/Products...odID=LOSA9898), to hold each individual cell in place. You will have to make a new, flat battery strap.
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Old 06-27-2006, 04:41 PM
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The battery strap has little bumps on the bottom (see here http://www.horizonhobby.com/Product...rodID=LOSA9898), to hold each individual cell in place. You will have to make a new, flat battery strap.
or he could just use a dremel to grind down the bumps to make it flat. he could also use a peice of lexan too.

The xxx-4 is competitive on smooth tracks, one's made of hardpack dirt or clay. The xx-4 is competitive on rough/rutted out tracks. There are lots of other cars out there that are probably better, but they cost upwards of 500 usually, and parts cost more when they break, plus parts are probably harder to find for those other cars. If you aren't looking to seriously race, you're best off with a Losi car. Parts are cheap, easy to find, and the cars both handle great as far as I'm concerned. Just keep track conditions in mind.
what do you mean by "keep track conditions in mind?"
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Old 06-27-2006, 05:08 PM
  #989  
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The Lipo should fit just fine...I ran stick packs in mine, you just flip the bar over.

I used to have to tape the battery to the bar, because on a hard hit, the bar will let the battery fly out.
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Old 06-27-2006, 06:38 PM
  #990  
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There are 4 humps on the chassis that you need to grind off to make the orion pack sit flat.
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