Losi XXX-S

Old 08-07-2002, 02:34 PM
  #3376  
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I wonder what degree the track was for that setup(Westly Payne's rubber on asphalt)?
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Old 08-07-2002, 02:43 PM
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Must be cold, it always (normally) is in England The tire choice for that race was open so he probably went for max grip, but still probably the right tire for the temperature

After looking at the pics, there are a couple of mistakes on the set-up sheets (not me) the foam on carpet should have a fat front roll bar and the asphalt set-up should have purple front springs

I might try both front and rear arms spaced forwards for the next race, haven't tried that combo.
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Old 08-07-2002, 02:58 PM
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Cool Louis, thanks for the corrections on the springs
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Old 08-07-2002, 03:10 PM
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no probs
The Magazine is RC car Racer and has loads of XXX-S stuff in it, probably because David Spashett writes some articles for it. He wrote an article on one-ways, radio programming and they had last years euro set-up
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Old 08-07-2002, 04:47 PM
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Hi all,

Has anybody experimented with adding washers under the front spindle ball stud? If so, what effect did this give?

Another thing, many people (not only here, but magazine articles etc) talk about increasing rotation in the rear of the car during cornering to gain 'cornering speed'. How is this different from oversteer, or is there just a very fine line between the two?

Thanks
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Old 08-07-2002, 04:53 PM
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I think its the pictures that dont corispond with the setups as i race at macclesfield regually and there is no way you cud run a one way around the track no matter what the car is. Go by the setup and not the pictures. Rick
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Old 08-07-2002, 05:29 PM
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i think to make the rear rotate is to make the rear follow the front end when turning instead of the front turns and the rear keep pushing straight forward. Oversteer occurs when the rear doesn't have enough traction and spin out or get out of shape~
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Old 08-08-2002, 01:48 AM
  #3383  
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Default Re: Roll center

Looks like roll center settings are confusing, some seem to think about it as center of gravity.

Losi is right with the Low and High names.

"High" is the standard set-up what you get in the car. High roll center gives less chassis roll.
"Low" is the modificated setting (you cut 3mm off the inner blocks). Low roll center gives more chassis roll.

If more or less chassis roll is better is up to you and the track conditions.

To make the theory more clear you may want to read one of the best free set-up book on the net: http://home.tiscali.be/heremanss/c2/index.htm
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Old 08-08-2002, 02:15 AM
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TTR, Your definately right about Losi being right and like I've been saying, the lower the hinge pin is to the chassis the more roll that end of the car will have-

Last edited by webspinner; 08-08-2002 at 02:18 AM.
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Old 08-08-2002, 02:23 AM
  #3385  
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I think you're right Rick, they probably just brought along the set-up sheets and whatever setup they had on their cars, but Andy Moore's foam on carpet set-up for the Macclesfield track is run with a front diff
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Old 08-08-2002, 02:31 AM
  #3386  
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Default RC Racer UK

Hi,

I can't get RC Racer UK in Singapore here, and wonder if anyone could post the setup and maybe the articles on XXX-S online ?

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Old 08-08-2002, 03:04 AM
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You may be able to subscribe to it by going to the website Racer
What set-up do you want? I posted all of the new ones
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Old 08-08-2002, 09:04 AM
  #3388  
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oh man
it's consfunsing now
so adjusting the camber rod length can get the same result as adjusting the pivot blocks' height?

also how come low roll center kits tamiya and hpi made both put spacers between the chassis and the hinge pins??
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Old 08-08-2002, 10:04 AM
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Fire, Yes! Camber link angles will alter the roll centers of that end of the car also. The higher the inner pivot point of the camber link, the more roll it will have for that end of the car. The lower the inner pivot point of the camber link, the less roll it will have for that end of the car. You can also raise the outer part of the links(hubs) and that will decrease chassis roll also.
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Old 08-08-2002, 10:05 AM
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ask them??

low roll center squares up the arm with the camber link. by doing so the chassis will roll more to reach the same compression point as regular roll center. if you put a set of tires on the car and set it on a table and compress it untill the LR corner of the chassis touches the table, then put low roll center in and do the same test, the a-arm will have a greater agle to it w/ the low roll center then w/ the regular roll center. then u can apply this dynamically to see how the car will respond differently through the corner. by increasing roll (LRC) u gain more steerign out of the corner because it soften the suspension slightly, and w/ HRC the car will turn in harder but you will have less steering off. did i manage to confuse you? test it for yourself on ur kitchen table.
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