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#1
19-01-2010
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BMax setup questions
Ran my bmax for the first time last weeend, indoors on slippy floor at York club.
Car was good, but back end wasn't very planted. I did run my 4.5 in it which won't have helped ! A few setup questions for indoors : 1 roll bar on the rear, yes or no and why ? 2 roll bar on the front ? What does a front roll bar do ? 3 ride height, level or raised front or rear. I'm running ae shocks, no 2 pistons in the front with 42.5 and no 1 pistons in the rear with 32.5, silvers on front greens to reardiors that sound right ? Lastly - weight, are people adding more for lipos , if so how much ? Cheers 
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#2
20-01-2010
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on clay or slipery floors most of us use between 120 gr and 240 gr of lead in the rear under the sels .
depending on the sels U use make the car be about 1800 gr heavy. with the AE shoks I cant help U there as we run the YOKOMO one's .
__________________
topspeed modelshop Ralls racing Rc-speedhouse Rude-Bits Serpent Fba section offroad chairman.
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#3
31-01-2010
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Update - better- but still not right !
Ran at york again (slippy floor and carpet), this time with a 6.5 and softer oils all round (35 in front) (30 in rear) with ae shock again. Also added quite a bit of lead in the rear. The car was great, not fast enough in a straight line, but very, very easy to drive. Only problem, was it's too 'safe'. The front end doesn't really hook into the corners and it pushes on a bit too much, even when braking hard into a corner. I was running the 1.3 roll bar on the rear to try and help the back end, but it felt too planted ! What should I do to liven the handling up a bit and make the front end more aggressive ?
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#4
31-01-2010
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it sounds like your front spring is to soft as it pushes when braking we run indoors on dusty wooden floor with yokomo shocks black front pistons white rear pistons im pretty sure they are the same as ae 2 front 1 rear we tend to run yokomo black front springs (3.8lb) and either black or orange rear (black=2.5lb orange is 2.4lb ish) depending on driving style i prefer orange as it feels more planted 40wt front oil 35wt rear oil inside hole on front arm outside hole on rear arm we use the plastic rear arm mount as it gives 3.5 deg of toe and we run the anti squat flat.
stu is was good enough to give kev lee a run for his money a couple weeks ago note to self dont over drive the jumps. 
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#5
31-01-2010
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Quote:
__________________
Will Johnson
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#6
31-01-2010
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Quote:
I always thought softer springs on the front would give more turn in, not less ? If I have to 'go stiffer' then there's ae blues, they are the next and only spring up from the silvers.
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#7
31-01-2010
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what tends to happen running a to softer spring when you brake the weight transfers to the front but so much weight starts to push the tiers into a slide if you run a stiffer spring when the weight transfer forward it will push the tire into the race track intialy give more steering less no throttle steering (rolling) and less on power steering and somtimes make the car feel like it to snatchy off power running a too stiffer spring can make the car under steer by not allowing the roll centres to do there job as it wont roll at all.
im guessing with your current setup when you have the car turned in mid to exit the car has a good amount of balance steering. stu
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#8
31-01-2010
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Quote:
yeah you could be right young will i seem to have this problem first it was kev moore then it was jamie booth and last kev lee maybe i should just close my eyes on the last lap i may get round with more success.
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#10
01-02-2010
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Not running any toe out, front wheels pretty much level.
The car is very balanced through the corners, it's just the initial turn in that's suffering. I have also tightened up the servo saver (so much so I bust a servo !) so I know it must be setup and not a problem as such. The car is just too easy to drive really, it just needs sharpening up a touch. I'll try harder front springs and see how I get on. Thanks everyone.
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#12
01-02-2010
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from what has been discribed adding front toe will be very minimal effect first things you must consider the most important are you running the correct tyres then look at the shocks if you get them close you will find the other bits and piese will just make you faster.
stu
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#13
02-02-2010
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tray repositioning the front camberlinks .
or only putting some chims under the outside one's on the steering hub. you will see that it increeses the front end grip or ceep it the same but give more reaction in the front end.
__________________
topspeed modelshop Ralls racing Rc-speedhouse Rude-Bits Serpent Fba section offroad chairman.
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