Xray T4 '13

Old 10-01-2012, 12:59 PM
  #241  
Tech Addict
 
gwhiz's Avatar
 
Join Date: Oct 2008
Posts: 693
Default

Originally Posted by YR4Dude View Post
It looks like the shock towers sit much lower on the bulkheads than the T3.
15mm

Originally Posted by YR4Dude View Post
Does that mean the shocks are shorter?
8mm

Originally Posted by YR4Dude View Post
Also, that cantilever servo mount, is that to minimize the servo mount's effect on chassis flex?
Supposedly.

(ref. http://www.teamxray.com/t4/)
gwhiz is offline  
Old 10-01-2012, 01:20 PM
  #242  
Tech Master
iTrader: (10)
 
Join Date: Feb 2009
Location: Lynnwood, Washington
Posts: 1,018
Trader Rating: 10 (100%+)
Default

I like most of the design tweaks they've done. Not really convinced on the CG. Those changes will have almost no impact on the CG, it will move 1mm most likely less.
malkiy is offline  
Old 10-01-2012, 01:25 PM
  #243  
Tech Elite
iTrader: (100)
 
olhipster1's Avatar
 
Join Date: Dec 2004
Location: Far away from Covid19 but close to 20
Posts: 4,107
Trader Rating: 100 (100%+)
Default mine

Mine, Mine, Mine

I do like the changes made to the platform.
olhipster1 is offline  
Old 10-01-2012, 01:57 PM
  #244  
Tech Regular
 
Join Date: May 2007
Location: Netherlands
Posts: 350
Default

Originally Posted by malkiy View Post
I like most of the design tweaks they've done. Not really convinced on the CG. Those changes will have almost no impact on the CG, it will move 1mm most likely less.
Every mm closer to the tormaq counts, that's way other brands use alu bol connectors and screws, they wear more but it is noticeable quicker, this is
for al cars the same issue or behave mass in your part of the globe different.
eded1 is offline  
Old 10-01-2012, 02:10 PM
  #245  
Tech Elite
iTrader: (9)
 
wwddww34's Avatar
 
Join Date: Feb 2011
Location: Dallas Texas
Posts: 2,560
Trader Rating: 9 (91%+)
Default

Does anybody know if that T4 servo mount bracket will fit on the T3 '12?
wwddww34 is offline  
Old 10-01-2012, 02:31 PM
  #246  
Tech Champion
iTrader: (44)
 
YR4Dude's Avatar
 
Join Date: Sep 2004
Location: So Cal
Posts: 5,637
Trader Rating: 44 (100%+)
Default

Originally Posted by gwhiz View Post
15mm



8mm



Supposedly.

(ref. http://www.teamxray.com/t4/)
Thanks

I have to say this is the most interesting XRay release in a long time.
YR4Dude is offline  
Old 10-01-2012, 02:35 PM
  #247  
Tech Elite
 
Skiddins's Avatar
 
Join Date: Feb 2006
Location: Windsor, UK
Posts: 4,911
Default

Originally Posted by wwddww34 View Post
Does anybody know if that T4 servo mount bracket will fit on the T3 '12?
I doubt it as the chassis will have two screw holes for the alu inner section.
Skiddins is offline  
Old 10-01-2012, 03:01 PM
  #248  
Tech Champion
iTrader: (4)
 
AdrianM's Avatar
 
Join Date: Aug 2001
Location: Tampa, FL
Posts: 5,915
Trader Rating: 4 (100%+)
Default

Originally Posted by eded1 View Post
Every mm closer to the tormaq counts, that's way other brands use alu bol connectors and screws, they wear more but it is noticeable quicker, this is
for al cars the same issue or behave mass in your part of the globe different.
In order to generate traction there has to be weight transfer. If the CG was at tarmac level this would not occur and there would be little traction. At that point only increases in friction between the tire and surface (adhesion) and aerodynamic down force would increase traction.

A lower CG will reduce traction. However, more chassis flex and suspension settings that increase weight transfer and contact patch optimization (Roll Centers, Link Angles, Camber Curves, etc) will increase traction.

Overall I really like what they did with the T4. It's cool to see Xray be confident enough to take risks and do something different than what Tamiya and Yokomo are doing.
AdrianM is offline  
Old 10-01-2012, 03:01 PM
  #249  
Tech Elite
iTrader: (9)
 
ChrisP's Avatar
 
Join Date: Sep 2003
Location: Shelby Twp, MI
Posts: 2,080
Trader Rating: 9 (100%+)
Default

Originally Posted by wwddww34 View Post
Does anybody know if that T4 servo mount bracket will fit on the T3 '12?
For the T3 '12 use this: http://www.teamxray.com/teamxray/pro...ount%20-%20Set
ChrisP is offline  
Old 10-01-2012, 03:06 PM
  #250  
Tech Elite
 
Skiddins's Avatar
 
Join Date: Feb 2006
Location: Windsor, UK
Posts: 4,911
Default

The only problem I can see with the new design is the upper part of the bumper mount.

On the old car it was up against the front bulkhead so in an impact it evened out the force.
The new mount is 5mm lower due to the new bumper etc so it no longer pushes up against the front bulkhead.

Might not seem a big deal, but I know of at least one person who has broken the front end of the chassis (Tamiya), because in a big front impact the lower bumper mount is bent up and back exposing the front edge of the chassis.

Skiddins

Last edited by Skiddins; 10-01-2012 at 04:07 PM.
Skiddins is offline  
Old 10-01-2012, 03:11 PM
  #251  
Tech Elite
 
Skiddins's Avatar
 
Join Date: Feb 2006
Location: Windsor, UK
Posts: 4,911
Default

Originally Posted by AdrianM View Post
.....A lower CG will reduce traction. However, more chassis flex and suspension settings that increase weight transfer.....
Presumably hence the thinner 2.2mm chassis
Skiddins is offline  
Old 10-01-2012, 03:20 PM
  #252  
Tech Champion
iTrader: (4)
 
AdrianM's Avatar
 
Join Date: Aug 2001
Location: Tampa, FL
Posts: 5,915
Trader Rating: 4 (100%+)
Default

Originally Posted by Skiddins View Post
Presumably hence the thinner 2.2mm chassis
Yup, and the lower CG should allow more aggressive suspension settings (more camber gain, more weight transfer, more roll) for more traction and corner speed with less tipping.

I don't think Xray mentioned it but assuming there are no new suspension mounts they also just made the T4 narrower. This will also increase weight transfer and traction as well as allow for more tuning of width to balance the car on Asphalt and Carpet. All narrow on asphalt, wider rear for more rear stability on carpet....All of this is great stuff.
AdrianM is offline  
Old 10-01-2012, 03:25 PM
  #253  
Tech Regular
 
Join Date: Jun 2011
Posts: 290
Default

Originally Posted by Skiddins View Post
The only problem I can see with the new design is the upper part of the bumper mount.



Skiddins
I'm with you on that one Skiddins, I will fit the old bumper, if the holes on motor mount from the T3 line up I'll fit that too, probably wont fit the servo mount either, IMO servo tape is elastic enough not to cause tweak but strong enough to hold the servo in place and by using tape I can get the servo 5mm closer to centre line.

Other than that I like it .

Bb
bucketboy is offline  
Old 10-01-2012, 04:06 PM
  #254  
Tech Elite
 
Skiddins's Avatar
 
Join Date: Feb 2006
Location: Windsor, UK
Posts: 4,911
Default

Originally Posted by AdrianM View Post
...I don't think Xray mentioned it but assuming there are no new suspension mounts they also just made the T4 narrower....
I think the only part of the suspension that is narrower are the pivot block mounts at the front of the rear wishbones, effectively it's the Hagberg mod, but only -0.75mm instead of the full 1mm.

Skiddins
Skiddins is offline  
Old 10-01-2012, 04:11 PM
  #255  
Tech Elite
 
Skiddins's Avatar
 
Join Date: Feb 2006
Location: Windsor, UK
Posts: 4,911
Default

Originally Posted by bucketboy View Post
I'm with you on that one Skiddins, I will fit the old bumper, if the holes on motor mount from the T3 line up I'll fit that too, probably wont fit the servo mount either, IMO servo tape is elastic enough not to cause tweak but strong enough to hold the servo in place and by using tape I can get the servo 5mm closer to centre line.

Other than that I like it .

Bb
Looking at it again, I might see If I can design some sort of spacer to lift the upper bumper mount so I can use the new bumper, and have it held in the correct position but still get the strength.

Can someone weigh the new and old bumpers whenever they a chance, cheers
Skiddins is offline  

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.