MRX-4X - Page 72

M7H · 07-09-2009, 12:49 AM

Quote:

Originally Posted by asw7576

ear diff ? Is there any reason not using it ?

Due to the incredible corner speed, with a diff you will loose engine power on the rear inner wheel....

asw7576 · 07-09-2009, 03:42 AM

Quote:

Originally Posted by M7H

Due to the incredible corner speed, with a diff you will loose engine power on the rear inner wheel....

Sorry M7H, I'm not trying to argue with you.... I know you are 1/8 expert. But I don't see incredible cornering speed from 1/8 cars vs. 1/10 cars, except on the straight lane.... bigger engine is faster on straight lane. In my home track, the lap times between 1/8 and 1/10 cars are only 2 seconds difference.

M7H · 07-09-2009, 04:10 AM

Quote:

Originally Posted by asw7576

I don't see incredible cornering speed from 1/8 cars vs. 1/10 cars,

Maybe not on all tracks, but certainly at my home track...

When I drove the Serpent Quattro (some years ago

), ball diffs where normal, but if you had your diff set to loose, you could hear the engine revving up....

Roelof · 07-09-2009, 06:26 AM

With the Sprint era the diff was more tightened for a better steering, finally with the design of the Excel the solid axle was standard for a better steering and a light rear axle.

InstantTilt · 07-09-2009, 08:29 AM

Has anyone been able to get a Track Width of 262mm with 61.5mm Tires?

InstantTilt · 07-09-2009, 08:04 PM

How slammed is the front of the 909. Should i mount it as low as it will go?

What is the best way to raise the back end in the air?

CanyonCarverR1 · 07-10-2009, 08:23 PM

Quote:

Originally Posted by InstantTilt

What is the best way to raise the back end in the air?

Use these:
http://www.ybslowinc.com/products.php?item_id=102

CanyonCarverR1 · 07-12-2009, 07:15 PM

Will reducing rear anti-squat reduce oversteer under acceleration?

sheeley · 07-12-2009, 07:18 PM

Quote:

Originally Posted by CanyonCarverR1

Will reducing rear anti-squat reduce oversteer under acceleration?

widen your front end a little

CanyonCarverR1 · 07-12-2009, 07:28 PM

Quote:

Originally Posted by sheeley

widen your front end a little

Thanks for the suggestion but it doesn't really answer my question.

sheeley · 07-12-2009, 07:40 PM

Quote:

Originally Posted by CanyonCarverR1

Thanks for the suggestion but it doesn't really answer my question.

np, I dont even know what anti-squat is lol

wingracer · 07-12-2009, 09:17 PM

Technically speaking, the car doesn't have an anti squat adjustment. Yes I know you can mix and match the pin blocks but I really wouldn't advise this.

asw7576 · 07-12-2009, 10:18 PM

Quote:

Originally Posted by CanyonCarverR1

Will reducing rear anti-squat reduce oversteer under acceleration?

anti squat : rear lower hinge pins position slightly upward ( front position is higher than rear). The effect : as the name implies, it resists squating on full throttle. Definetely it is wrong approach to fix car's understeering / oversteering problems.

Don't play with this.... trust me... i've been there..... waste of time.

If your car get some oversteer, widen the rear track width, let say 262 - 264mm. Extra Toe In, lets say 3 degree, make sure rear suspension is not too soft and Always use new tires before testing new setup or before racing !!! Some people sometimes too stinggy to use new tires.

Guys : wingracer, francis, fulcrum2

I think I solve the understeering problem..... like you guys suggested:
1. Body problem ( T530 vs. Frizzbee ). Frizzbee is not prefect, but much2 better than T530. I will buy 909 as soon as my LHS has it.
2. Tires. Brand new tires really solve poor handling problems. Sometimes I'm too stinggy to open new box of tires

..... From now on.... I promise to use new tires !!

Got B3 yesterday

senna555 · 07-13-2009, 04:49 AM

Anyone know the exact difference between the rear upright on the mrx4, mrx4r and mrx4x?

As far as the position of the set screw for upper arm?

MugenDrew · 07-17-2009, 04:34 PM

The 4 set screw is 2mm further away from the chassis. The wheel will also be .5mm closer to the chassis (relationship of the center line of the lower pivot balls and the center of the contact patch).