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-   -   X6 Squared weight (http://www.oople.com/forums/showthread.php?t=20867)

Wraggy 14-03-2009 02:21 PM

X6 Squared weight
 
so with everyone getting there X6 squared and lipo what weight is everyone running and where on the chassis you addding it ???

bigred5765 14-03-2009 02:26 PM

1740grms all up

sime46 14-03-2009 02:30 PM

1740g's too. Still experimenting with amount of ballast and location tho. Its working really well tho to be fair.Under servo, under speedo and about 40g under lipo. I'm using thin lead sheet so its easy to cut and fit.

warped 14-03-2009 02:52 PM

:confused:What's the thinking behind running that amount of weight?

Sounds surprisingly heavy!

bigred5765 14-03-2009 03:34 PM

helps keep the car on the track,weight isnt as much a issue to speed or duration now as it use to be,

jono83 14-03-2009 03:36 PM

lipo and brushless more than makes up for the extra weight

bigred5765 14-03-2009 06:30 PM

what jono said

super__dan 14-03-2009 06:47 PM

Well there's a little bit more to it than that. First of all there is front/rear distribution and then there's overall weight.

Distribution if you weight your car up front to rear you want something around 35% front and 65% rear. This is more important than overall weight.

If you run a big lipo then chances are by the time you've added wieght to the front you'll be in that overall weight ball park, however this is not a bad thing as often weight is grip and it almost always makes the car easier to drive.

warped 14-03-2009 07:01 PM

So you're saying you need to weigh the car to 1740g to get the correct front to rear weight distribution?

bigred5765 14-03-2009 07:03 PM

depends on your cells / lipos but thats were ares is at around the weight distribution Dans suggested

Body Paint 14-03-2009 07:11 PM

Weight does not only apply to the X-6, it's all cars. A light 2wd car doesn't have much grip and with the amount of power we have nowadays you need a bit of weight to keep the wheels on the ground.

What dan is saying is that don't just add weight and expect the car to be perfectly balanced.

The optimum weight/grip ratio seems to be around 1740g, this is something that the X team have speant a lot of time figuring out. Once you have figured out how much weight you want to add you then need to think about where you want to position the weight to affect the balance of the car. Again the X team have also worked hard on figuring the best front to rear ratio for the X-6 and Super_Dan has worked hardest to figure out that the dream figure is 35% front 65% rear.

jono83 14-03-2009 07:20 PM

well i jus checked mine and it s 35% front and 65% rear!!

elektrobuggy 14-03-2009 07:32 PM

Concerning the fairly high weight for a 2WD buggy:
Do the guys in the States add a similar weight in the car, for instance at Cactus Classic? :confused:

The AE team uses a so called 'lightweight setup' for LIPO with a weight of the B4 of 1515g ready to race.

/norbert

P.S.: I received my Squared just right now and couldn't give it a go up to now...

Body Paint 14-03-2009 07:33 PM

good job Jono :thumbsup:

bert digler 14-03-2009 07:36 PM

Quote:

Originally Posted by super__dan (Post 218479)
Well there's a little bit more to it than that. First of all there is front/rear distribution and then there's overall weight.

Distribution if you weight your car up front to rear you want something around 35% front and 65% rear. This is more important than overall weight.

If you run a big lipo then chances are by the time you've added wieght to the front you'll be in that overall weight ball park, however this is not a bad thing as often weight is grip and it almost always makes the car easier to drive.

where is the centre line:confused:split 35 65

jono83 14-03-2009 07:36 PM

Quote:

Originally Posted by Body Paint (Post 218502)
good job Jono :thumbsup:

if am being honest its down to luck more than skill lol!!

Body Paint 14-03-2009 07:47 PM

Quote:

Originally Posted by bert digler (Post 218505)
where is the centre line:confused:split 35 65

If you weigh your car up to 1740g then you want the weight on the front wheels to be 609g and the weight on the rear wheels 1131g

Danosborne6661 14-03-2009 07:48 PM

Interesting reading all this!
I've been running a light X6 with a Tekin 3400mah lipo which only weighs 204g!!

Just put some full strip lead sheet under the lipo and under the ESC to take it up to 1700g :D

warped 14-03-2009 08:23 PM

Well I don't run an x6 and to get to 1740g I would have to run 420g of ballast which simply wouldn't fit without a redesign of the chassis (unless anybody has a load of spare tungsten they don't need.)

I currently have a 65 / 35 weight distribution at the minimum weight limit.

It sort of seems counter intuative to be running that much ballast on a racing car.

Dan / Body Paint. Out of interest what sort of tracks were you testing on to come up with that weight?

Were they particularly bumpy?

The reason I ask is that yes heavy cars generate more grip but they also generate more momentum and higher lateral loads too. - So I can see weight being an advantage on rough tracks., but on a smooth track I would expect cornering speed to be worse than for a light car.

This is certainly what you see in touring cars and 1/12.

jono83 14-03-2009 08:28 PM

the 1740g is x6 specific not 1/10th offroad specific we have jus found that this weight works best for the x6 with lipo not sure about other off road chassis sorry


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