Like Tree222Likes

Tamiya TB Evo 8

Old 08-02-2022, 12:25 AM
  #31  
Tech Champion
 
Sir 51D3WAYS's Avatar
 
Join Date: Jun 2011
Location: Stuck in urban hell
Posts: 6,537
Default

Originally Posted by frankf
Aluminum chassis brace and a vertical top brace, how stiff do they want to make this car? It's got more braces than an Xmaxx!
I reckon it'll be stiff longitudinally, but it will be torsionally flexible.
Sir 51D3WAYS is offline  
Old 08-02-2022, 11:55 PM
  #32  
Tech Master
iTrader: (6)
 
kentech's Avatar
 
Join Date: Aug 2001
Posts: 1,040
Trader Rating: 6 (100%+)
Default

Posted the full product description on the TB Evo 8 now, containing all details of the kit:
https://kentech.wordpress.com/2022/0...o-8-full-info/
Raman, Nerobro, garnt and 2 others like this.
kentech is offline  
Old 08-03-2022, 12:12 AM
  #33  
Tech Elite
iTrader: (2)
 
Join Date: Sep 2010
Location: Chicagoland
Posts: 2,313
Trader Rating: 2 (100%+)
Default

Originally Posted by kentech
Posted the full product description on the TB Evo 8 now, containing all details of the kit:
https://kentech.wordpress.com/2022/0...o-8-full-info/
Wonderful, as usual.
kentech likes this.
Nerobro is offline  
Old 08-03-2022, 07:13 AM
  #34  
Tech Master
 
mac853's Avatar
 
Join Date: Feb 2007
Location: Dirty place
Posts: 1,981
Default

I think this chassis is good to run if converted to FF configuration.
Unfortunately nowadays the International race rules of FF disallowed to run "self-made" chassis, and the other problem is the gear ratio is limited until 5.0 or 4.5 fdr, the weak point of shaft cars of they would have disadvantage in case they run same gear ration as belt drive cars.
mac853 is offline  
Old 08-03-2022, 07:53 PM
  #35  
Tech Master
iTrader: (5)
 
foampervert's Avatar
 
Join Date: Nov 2002
Posts: 1,635
Trader Rating: 5 (100%+)
Default Torque steer

Considering the awesomatix a700 ffg/rfg and xpress at1 ffg/rfg systems to counter torque steer. Will the tb evo 8 have issues with torque steer?

For that matter, why is torque steer not an issue with 4wd buggies? How is it an issue only for onroad shaft drive cars?
foampervert is offline  
Old 08-03-2022, 09:26 PM
  #36  
Tech Champion
iTrader: (2)
 
gigaplex's Avatar
 
Join Date: Dec 2015
Location: Melbourne, VIC
Posts: 6,331
Trader Rating: 2 (100%+)
Default

Originally Posted by foampervert
Considering the awesomatix a700 ffg/rfg and xpress at1 ffg/rfg systems to counter torque steer. Will the tb evo 8 have issues with torque steer?

For that matter, why is torque steer not an issue with 4wd buggies? How is it an issue only for onroad shaft drive cars?
Buggies are generally heavier, their wheels have a larger gyro effect, so are less susceptible to the inertia of the rotor.

I'd expect the Evo 8 to have mild torque steer with a powerful motor.
gigaplex is offline  
Old 08-06-2022, 09:06 AM
  #37  
Suspended
iTrader: (-1)
 
Join Date: Aug 2022
Location: On a spaceship
Posts: 16
Default Tamiya TB Evo 8

Spoiler 🚨
Sparrow99 is offline  
Old 08-06-2022, 10:10 AM
  #38  
Tech Elite
iTrader: (5)
 
Speed Chaser's Avatar
 
Join Date: Sep 2014
Location: Mars sipping a pina colada
Posts: 4,810
Trader Rating: 5 (100%+)
Default

I want one.
Speed Chaser is offline  
Old 08-06-2022, 12:28 PM
  #39  
Tech Champion
 
Sir 51D3WAYS's Avatar
 
Join Date: Jun 2011
Location: Stuck in urban hell
Posts: 6,537
Default

Originally Posted by foampervert
Considering the awesomatix a700 ffg/rfg and xpress at1 ffg/rfg systems to counter torque steer. Will the tb evo 8 have issues with torque steer?

For that matter, why is torque steer not an issue with 4wd buggies? How is it an issue only for onroad shaft drive cars?
They do torque steer, it's just not easily perceptible as the surface is moving about underneath them. Try a 4wd shafty on high grip astro with a mod motor, it'll torque steer.
gigaplex likes this.
Sir 51D3WAYS is offline  
Old 08-06-2022, 07:29 PM
  #40  
Tech Elite
iTrader: (30)
 
NutDriver's Avatar
 
Join Date: Nov 2012
Location: South Carolina
Posts: 3,046
Trader Rating: 30 (100%+)
Default

Can someone tell me the transmission ratio for the Evo 8?
NutDriver is offline  
Old 08-06-2022, 07:53 PM
  #41  
Regional Moderator
iTrader: (1)
 
disaster999's Avatar
 
Join Date: Aug 2001
Location: Hong Kong
Posts: 3,997
Trader Rating: 1 (100%+)
Default

Originally Posted by NutDriver
Can someone tell me the transmission ratio for the Evo 8?
99.99% 2.5
Sir 51D3WAYS and NutDriver like this.
disaster999 is online now  
Old 08-07-2022, 03:21 PM
  #42  
Tech Elite
iTrader: (30)
 
NutDriver's Avatar
 
Join Date: Nov 2012
Location: South Carolina
Posts: 3,046
Trader Rating: 30 (100%+)
Default

Originally Posted by disaster999
99.99% 2.5
That's disappointing. I wish that Tamiya would move into the brushless era and adjust to 2.0 or numerically lower.
NutDriver is offline  
Old 08-07-2022, 05:09 PM
  #43  
Tech Elite
iTrader: (51)
 
fat500's Avatar
 
Join Date: May 2004
Location: Boca Raton, florida
Posts: 2,396
Trader Rating: 51 (100%+)
Default

diff gears would be too big.....to be efficient.....car would be slow.....
fat500 is offline  
Old 08-07-2022, 07:04 PM
  #44  
Tech Champion
iTrader: (2)
 
gigaplex's Avatar
 
Join Date: Dec 2015
Location: Melbourne, VIC
Posts: 6,331
Trader Rating: 2 (100%+)
Default

Originally Posted by fat500
diff gears would be too big.....to be efficient.....car would be slow.....
To get the lower IR number, the diffs need to get smaller or the input gear needs to get bigger.
gigaplex is offline  
Old 08-09-2022, 05:35 AM
  #45  
Tech Regular
 
Join Date: Sep 2011
Location: Czech republic
Posts: 464
Default

Originally Posted by NutDriver
That's disappointing. I wish that Tamiya would move into the brushless era and adjust to 2.0 or numerically lower.
Ironically, Tamiya used to have lower gear ratios in the brushed era. Evo4 gears had 2.2 ratio and they could be fitted into Evo5/TB03 gearbox (which moved to 2.43), with some mods. But I'm not sure if they worked with gear diffs, plus they are getting harder to find.

But I think there was a reason behind the slower gear ratio - reducing torque transmitted through the shaft to reduce twisting of the chassis.
fat500 likes this.
Papi 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.