Go Back   RCNitroTalk > R/C Mechanics > Engines and Motors

TRX 2.5 is a piece of shit

Discussion in Engines and Motors forum, started by JATO.

Post Reply
Thread Tools
Unread 9-15-2006, 6:45 AM   #16
MEGA MAXX
RCNT Talkaholic
 
Join Date: Dec 2005
Location: UK
Posts: 302
Trader Feedback: (0)
Mentioned: 0 Post(s)
my 2.5 is great so far in my revo, has some amazing power for a .15! im having problems with wheelies on mine!(still running the stock pipe and gearing)

it is pretty reliable too and can be a bit touchy when it comes to tuning but if you just take it slow and turn in very small increments its just like most other engines. (dunno if the tnt mod helps with the tuning at all?)



and yes mine does have a habit of sometimes not shifting for a couple of laps round a track, then the shift will just come back, very strange, and can be annoying, but is fine for the rest of the day, just has an eppy for those 2 laps then is fine.

i have also sealed up the backplate, carbneck, and did the exhuast port for good measure, now on the same tune I can't even get it to move its that rich! so I did have an airleak somwhere.

but as most people have said, there are good and bad ones, and I've found, they can be a bit picky with what fuel you use through them.
Status: Offline
 
Quote
Unread 9-15-2006, 6:54 AM   #17
vbgagnon
Hardcore RCNT User
 
vbgagnon's Avatar
 
Join Date: Jan 2004
Location: Madawaska, ME
Posts: 6,538
Experience: I am an experienced RC driver
Trader Feedback: (26)
Mentioned: 1 Post(s)
The 2.5r I had in my revo ran great. I sold it to Mr. Will, I'm assuming that it still runs good. I bought the 3.3 and am very impressed. It doesn't have the instant snap like the OS does, but it is very very smooth. I'd buy another in a heartbeat.
Status: Offline
 
Quote
Unread 9-17-2006, 2:53 PM   #18
JATO
RCNT Racer
 
Join Date: May 2005
Location: CANADA
Posts: 124
Trader Feedback: (0)
Mentioned: 0 Post(s)
i just had a stupid idea but how big do they make the mr.nija series engines. and also would it be better to get a drop in big block or is getting a conversion a better way to get more power. also this is for bashing and racing at my local track. I just want something to make the guys at my hobby shop who think there trucks are amazingly fast to crap there pants. there isn't really a price limit

Last edited by JATO; 9-17-2006 at 3:06 PM.
Status: Offline
 
Quote
Unread 9-17-2006, 3:54 PM   #19
rccars411
RCNT Talkaholic
 
Join Date: Aug 2004
Posts: 397
Trader Feedback: (0)
Mentioned: 0 Post(s)
Mario Rossi engines are made up to .21. There are 2, one for onroad, and one for off road.
Status: Offline
 
Quote
Unread 9-17-2006, 4:01 PM   #20
robmob
oOOo
 
robmob's Avatar
 
Join Date: Sep 2003
Location: Napa, CA
Posts: 13,971
Experience: I am a RC guru
Trader Feedback: (53)
Mentioned: 12 Post(s)
Quote:
Originally Posted by rccars411
Mario Rossi engines are made up to .21. There are 2, one for onroad, and one for off road.
There are 3 Ninja Mills.

MR21 B01
MR21 R01
MR12 T01

Last edited by robmob; 9-17-2006 at 4:04 PM.
Status: Offline
 
Quote
Unread 9-17-2006, 4:18 PM   #21
rccars411
RCNT Talkaholic
 
Join Date: Aug 2004
Posts: 397
Trader Feedback: (0)
Mentioned: 0 Post(s)
Sorry, I was referring to the .21s that there are only 2 of them.
Status: Offline
 
Quote
Unread 9-17-2006, 11:07 PM   #22
REVOTMAXX.18TM
RCNT Rookie
 
Join Date: Sep 2006
Posts: 23
Trader Feedback: (0)
Mentioned: 0 Post(s)
Installed OS .18TM, in my Revo got very pissed off at the 2.5R, also have a 2.5 in my Maxx, its doing the same thing the 2.5R was doing, I believe we have the same problem----an air leak somewhere. As far as the motors go OS blows the 2.5R away on speed, running, all the above!! Trinity pipe also.
Status: Offline
 
Quote
Unread 9-17-2006, 11:13 PM   #23
rccars411
RCNT Talkaholic
 
Join Date: Aug 2004
Posts: 397
Trader Feedback: (0)
Mentioned: 0 Post(s)
OS is by far the best way you can go for sport and racing for small blocks. they are almost 100% noob proof. And as we all know, last a long long time!
Status: Offline
 
Quote
Unread 9-18-2006, 6:30 PM   #24
JATO
RCNT Racer
 
Join Date: May 2005
Location: CANADA
Posts: 124
Trader Feedback: (0)
Mentioned: 0 Post(s)
well can you guys give me so opinions on what to put in my truck that will just crush anything. I think the fastest guy at my track has a .21 wasp or bigger there is no price limit and for a big block what is a good chassis conversion for the t-maxx and another question do .21 racing mills put out more power than shitty .28 say mills
Status: Offline
 
Quote
Unread 9-18-2006, 6:58 PM   #25
rccars411
RCNT Talkaholic
 
Join Date: Aug 2004
Posts: 397
Trader Feedback: (0)
Mentioned: 0 Post(s)
that generation of engines (wasp) were made by toki. Toki had a generation of bad engines being sent out and sold. Some of those to look out for are Fantom, Peak, and Orion's older engines. Orion switched to Picco after time (according to RCCA) because of problems.

.21s are perfect for buggies. But as far as .28's go, its all about power! You can gear them taller with a .28 because of the torque you are getting out of it. .21s however, get all the R&D because its the legal engine in racing for 1/8 buggy.

Sorry for the rambling, but hopefully it was semi useful to you.

What do you look forward to doing? If you do want to go BB, I am suggesting something bigger than a .21. You'll have the power to bash and race, not to mention, it'll be cheaper over a .21 But if you want to strictly race, throw a hot .21 in there.
Status: Offline
 
Quote
Unread 9-18-2006, 9:27 PM   #26
REVOTMAXX.18TM
RCNT Rookie
 
Join Date: Sep 2006
Posts: 23
Trader Feedback: (0)
Mentioned: 0 Post(s)
Quote:
Originally Posted by JATO
well can you guys give me so opinions on what to put in my truck that will just crush anything. I think the fastest guy at my track has a .21 wasp or bigger there is no price limit and for a big block what is a good chassis conversion for the t-maxx and another question do .21 racing mills put out more power than shitty .28 say mills
Two words---Nova Rossi and tuned exhaust. Also check are & B mods, they have built engines, and you can send them your engine and mod it to put out serious power.

https://rbmods.net/rbshop/product_in...dcaa4fb40a6a4f

Check this .21

https://rbmods.net/rbshop/product_in...dcaa4fb40a6a4f
If I had the money this .21 @ 3.05HP!!!! This would be ordered!!!!!!!

http://www.2coolrc.com/detail.aspx?ID=567

Maybe this chassis?????

Last edited by REVOTMAXX.18TM; 9-18-2006 at 9:32 PM.
Status: Offline
 
Quote
Unread 9-18-2006, 9:59 PM   #27
rccars411
RCNT Talkaholic
 
Join Date: Aug 2004
Posts: 397
Trader Feedback: (0)
Mentioned: 0 Post(s)
i'm curious as to what dyno they used to get those horsepower numbers.

The OPS based Radical is a good choice. Similar as to what Andrew smolnik uses, his is a OPS.
Status: Offline
 
Quote
Unread 9-18-2006, 11:35 PM   #28
jetmechG550
Hardcore RCNT User
 
Join Date: Jun 2004
Location: Plainfield
Posts: 6,219
Trader Feedback: (18)
Mentioned: 0 Post(s)
I've never heard much of anything good about OPS. Someone on another board was talking about how a few guys literally threw them in the trash.

As far as coming up with numbers over 3HP, a stock Nova pushes that out of the box, so it's not too out of line to see a modded mill claiming it.
Status: Offline
 
Quote
Unread 9-19-2006, 5:19 AM   #29
REVOTMAXX.18TM
RCNT Rookie
 
Join Date: Sep 2006
Posts: 23
Trader Feedback: (0)
Mentioned: 0 Post(s)
As for the after thoughts I am just getting items for someone that asks for help to look at////////

Quote:
Originally Posted by jetmechG550
I've never heard much of anything good about OPS. Someone on another board was talking about how a few guys literally threw them in the trash.

As far as coming up with numbers over 3HP, a stock Nova pushes that out of the box, so it's not too out of line to see a modded mill claiming it.
It comes out in May, reasonable priced, out of box. Just giving suggestions. rccars411 knows what I am taking about, we are to help each other>>>>....

Last edited by REVOTMAXX.18TM; 9-24-2006 at 11:11 AM.
Status: Offline
 
Quote
Unread 9-19-2006, 6:49 AM   #30
REVOTMAXX.18TM
RCNT Rookie
 
Join Date: Sep 2006
Posts: 23
Trader Feedback: (0)
Mentioned: 0 Post(s)
Quote:
Originally Posted by JATO
well can you guys give me so opinions on what to put in my truck that will just crush anything. I think the fastest guy at my track has a .21 wasp or bigger there is no price limit and for a big block what is a good chassis conversion for the t-maxx and another question do .21 racing mills put out more power than shitty .28 say mills
http://www.osengines.com/engines/osmg2068.html
Check the OS engines also, I have a new .18TM wouldn't be without it.
Status: Offline
 
Quote
Post Reply

Share This Post


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Online Trx 2.5 teardown and rebuild bforum3 Traxxas T-Maxx 2 10-18-2009 9:58 PM
FS/FT TRX 2.5 Engine Components Carls_Mammoth For Sale/Trade 9 10-24-2004 7:10 PM
TRX 2.5 vs Epic 18 jpsonoma Engines and Motors 3 10-07-2004 9:40 AM
A.E. Pipe on TRX 2.5 SDMaXX Traxxas T-Maxx 0 8-31-2003 12:47 AM

All times are GMT -5. The time now is 3:02 AM.
Copyright © 2008-2011 RCNitroTalk, All Rights Reserved.
Powered by vBulletin®, Copyright ©2000 - 2009, Jelsoft Enterprises Ltd.