TNX Engine Upgrade - Page 2 - RCCanada - Canada Radio Controlled Hobby Forum
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Old 11-02-2007, 09:49 AM   #11
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I have had both versions of the TNX....and honestly, the small block 18 was really good. Getting the O.S. 18TM would provide ample more power without going big block. On my 5.2 I noticed that there is sooooooooo much bottom end torque that I really have to baby the truck to make sure it doesn't wheelie or back flip if I give'er and when I raced my TNX there was just no way the stock nylon universals would stay reliable so I swithched to MIP CVD's.
The 5.2 comes with steel drive shafts instead of the nylons.
Don't forget you have to change the exhaust system too if you go big block (that's also a few$$)....and your fuel economy kinda takes a dump.
The 18TM doesn't quite have the torque of the Axial but you won't be disappointed in the speed and you'll be able to clamp the trigger without having to back off to avoid the front wheels from lifting. Front wheels off ground=no steering.
Big block doesn't automatically mean faster speeds but rather more likely a faster 'zero to sixty' time..if you can hold a straight line.
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Old 11-02-2007, 10:17 AM   #12
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that really makes a lot of sense.. you must be the RC mechanic at John's? i talked to you on the phone when i was looking for spur gear sets. thanks for the advice, man. that really helped. now i formulated my plan. :IDEA: definitely go for MIP CVDs first, then wear out the stock .18 :KABOOM: before i get a new engine! :GRIN:
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Old 11-02-2007, 10:23 AM   #13
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Originally Posted by Wezzer View Post
Don't have to change the drive shafts all you need to get is the
5.2r chassis...
5.2r clutch bell
5.2r spur gear
oh and the motor mounts
and your ready to go...
yep.. thts all i did...
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Old 11-02-2007, 10:37 AM   #14
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i checked the hop-up for MIP CVDs, it costs money.. uhh, do i need to change the arms for the pivot balls too? so basically the entire arms set are gonna changed? except the dogbone!
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Old 11-02-2007, 09:51 PM   #15
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You can change to the MIP's and the arms at the same time or buy the MIP's now and later buy the pillow ball suspension...the c hubs that come with the TNX are adequate....
Rush Evo
Tamiya TNX Converted to 5.2r with an Axial 28
TTR ST-1 with sts d21t
TTR S3 with Hyper 21
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