MRX-4X

Old 07-09-2009, 12:49 AM
  #1066  
M7H
Tech Elite
 
M7H's Avatar
 
Join Date: Dec 2004
Location: The Netherlands
Posts: 2,198
Default

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....
M7H is offline  
Old 07-09-2009, 03:42 AM
  #1067  
Tech Champion
 
asw7576's Avatar
 
Join Date: Sep 2004
Posts: 5,792
Default

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.
asw7576 is offline  
Old 07-09-2009, 04:10 AM
  #1068  
M7H
Tech Elite
 
M7H's Avatar
 
Join Date: Dec 2004
Location: The Netherlands
Posts: 2,198
Default

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....
M7H is offline  
Old 07-09-2009, 06:26 AM
  #1069  
Tech Lord
 
Roelof's Avatar
 
Join Date: Aug 2007
Location: Holland
Posts: 12,288
Default

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.
Roelof is offline  
Old 07-09-2009, 08:29 AM
  #1070  
Tech Rookie
 
Join Date: May 2009
Posts: 18
Default Tire Width.

Has anyone been able to get a Track Width of 262mm with 61.5mm Tires?
InstantTilt is offline  
Old 07-09-2009, 08:04 PM
  #1071  
Tech Rookie
 
Join Date: May 2009
Posts: 18
Default 909 Body.

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?
InstantTilt is offline  
Old 07-10-2009, 08:23 PM
  #1072  
Tech Master
iTrader: (13)
 
CanyonCarverR1's Avatar
 
Join Date: Jan 2008
Location: NorCal
Posts: 1,338
Trader Rating: 13 (100%+)
Default

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 is offline  
Old 07-12-2009, 07:15 PM
  #1073  
Tech Master
iTrader: (13)
 
CanyonCarverR1's Avatar
 
Join Date: Jan 2008
Location: NorCal
Posts: 1,338
Trader Rating: 13 (100%+)
Default

Will reducing rear anti-squat reduce oversteer under acceleration?
CanyonCarverR1 is offline  
Old 07-12-2009, 07:18 PM
  #1074  
Tech Regular
 
Join Date: Apr 2009
Location: San Francisco
Posts: 271
Default

Originally Posted by CanyonCarverR1
Will reducing rear anti-squat reduce oversteer under acceleration?
widen your front end a little
sheeley is offline  
Old 07-12-2009, 07:28 PM
  #1075  
Tech Master
iTrader: (13)
 
CanyonCarverR1's Avatar
 
Join Date: Jan 2008
Location: NorCal
Posts: 1,338
Trader Rating: 13 (100%+)
Default

Originally Posted by sheeley
widen your front end a little
Thanks for the suggestion but it doesn't really answer my question.
CanyonCarverR1 is offline  
Old 07-12-2009, 07:40 PM
  #1076  
Tech Regular
 
Join Date: Apr 2009
Location: San Francisco
Posts: 271
Default

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
sheeley is offline  
Old 07-12-2009, 09:17 PM
  #1077  
Tech Lord
iTrader: (24)
 
wingracer's Avatar
 
Join Date: Nov 2007
Posts: 13,734
Trader Rating: 24 (100%+)
Default

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.
wingracer is offline  
Old 07-12-2009, 10:18 PM
  #1078  
Tech Champion
 
asw7576's Avatar
 
Join Date: Sep 2004
Posts: 5,792
Default

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

Last edited by asw7576; 07-12-2009 at 10:29 PM.
asw7576 is offline  
Old 07-13-2009, 04:49 AM
  #1079  
Tech Elite
iTrader: (16)
 
J.Gonzalez's Avatar
 
Join Date: Nov 2002
Location: connecticut
Posts: 2,480
Trader Rating: 16 (100%+)
Default

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?
J.Gonzalez is offline  
Old 07-17-2009, 04:34 PM
  #1080  
Tech Elite
iTrader: (36)
 
MugenDrew's Avatar
 
Join Date: Aug 2006
Location: Apollo Beach, Florida
Posts: 2,152
Trader Rating: 36 (100%+)
Default

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).
MugenDrew is offline  

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.