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Old 11-28-2011 | 12:10 PM
  #1891  
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My carb is sticking when it gets halfway open, I took it apart but can't see any thing wrong... Help!
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Old 11-28-2011 | 12:12 PM
  #1892  
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Originally Posted by markkris
hoping someone can explain how theese three engines will preform on the track.

p3xs

p5xlt

21-4

all seem to use the same rod and bearings, so i'm assuming quality of the three is close. i prefer the engine to acclerate quickly, and have enough torque to get the wheels spinning as i prefer to drift/ powerslide through the corners.
thanks in advance mark

P5XLT is the one you want based on what your describing...... especially so if it is Clocked !
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Old 11-28-2011 | 01:02 PM
  #1893  
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Originally Posted by BIGTIME
My carb is sticking when it gets halfway open, I took it apart but can't see any thing wrong... Help!
Change it to a Novarossi carb!!!

Sorry...

Make sure the wire connection to the throttle servo are straight. Is it sticking when the engine are out of the car?

What car are you running?
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Old 11-28-2011 | 02:04 PM
  #1894  
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Originally Posted by BIGTIME
My carb is sticking when it gets halfway open, I took it apart but can't see any thing wrong... Help!
Call me later I will help you try and fix it otp

5035446624
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Old 11-29-2011 | 03:22 AM
  #1895  
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Originally Posted by Maximo
P5XLT is the one you want based on what your describing...... especially so if it is Clocked !
thanks for the response neal.
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Old 11-29-2011 | 04:30 AM
  #1896  
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Originally Posted by Maximo
Yes way too much for a Buggy, but simply awesome in a Truggy ! ...Tho the engine does make big power it is not a light switch at all, it only gets nasty if you want it to...It finds traction like no other truggy engine I have run..doesn't matter if the surface is loose or 100% traction this engine carves up the technical sections unlike anything else...With the ultra long stroke the powerband starts at a very low RPM, which gives it amazing trigger feel and control in the low end.....Has almost a 4 stroke feel in how effortless the engine pulls from the bottom end, which IMO makes it wicked in a Truggy....No other .21 I have ever seen has anything like the Bottom end we are seeing from these engines ..... Even on loose surfaces these engines will still find enough traction to yank the front off the ground...The ultra long stroke gives them something special that has to be felt to be appreciated ! They seem to be able to put more power to the ground with less tire spin then a more conventional shorter stroke engine of similar power.....
what carb insert have you got in that ?
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Old 11-29-2011 | 04:33 AM
  #1897  
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Originally Posted by aussies1129
what carb insert have you got in that ?
I have run from a 6.5 all the way to a 9 mm........I believe in that video it is running a 7.5
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Old 12-01-2011 | 10:17 PM
  #1898  
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I just finish breakin my plus4T and having trouble with the tuning.It have 3 stage idle.First after reving it will go straight to a good idle and then the idle rise up for about 6-7 sec and came down to a good idle again.Ive try to put my p5 in the same car and tune was perfect.Thats mean nothing wrong with my fuel tank,hose and anything got to do with the car.One of my friend has the exact same problem with his plus4btt with same pipe[9901/021) and ive try to tune it without sucsess.Its runs good on the track tho but just cant get rid of the 3 stage idle..weird!Can someone help me please?
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Old 12-01-2011 | 10:35 PM
  #1899  
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Originally Posted by Mohd Zailani
I just finish breakin my plus4T and having trouble with the tuning.It have 3 stage idle.First after reving it will go straight to a good idle and then the idle rise up for about 6-7 sec and came down to a good idle again.Ive try to put my p5 in the same car and tune was perfect.Thats mean nothing wrong with my fuel tank,hose and anything got to do with the car.One of my friend has the exact same problem with his plus4btt with same pipe[9901/021) and ive try to tune it without sucsess.Its runs good on the track tho but just cant get rid of the 3 stage idle..weird!Can someone help me please?
How much fuel through it so far? Use a Novarossi C6TGC or C5TGC in cold outdoor temperatures. I prefer O'Donnell 77T in a Team and normal Plus4 after a few gallons otherwise I'm having problems with 2 stage idle and flame outs. 0,7 mm shim when running 25% nitro and stock shimming with 30% nitro.
If the engine are broken in, it sounds like too rich bottom and perhaps an out of tune top. Warm up the engine and set the HSN a little rich.

Try the Bernard Durand way here:

http://vimeo.com/7595905

Last edited by Lille-bror; 12-01-2011 at 11:12 PM.
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Old 12-02-2011 | 02:26 AM
  #1900  
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Originally Posted by Lille-bror
If the engine are broken in, it sounds like too rich bottom and perhaps an out of tune top. Warm up the engine and set the HSN a little rich.

Try the Bernard Durand way here:

http://vimeo.com/7595905
Had that very problem the other day with my 4btt, 2 stage idle and flame outs, re did the hsn and then reset the lsn now runs like a demon.

Very impressive once you get the tune right how well these novas hold a tune.
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Old 12-02-2011 | 02:57 AM
  #1901  
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Originally Posted by Mohd Zailani
I just finish breakin my plus4T and having trouble with the tuning.It have 3 stage idle.First after reving it will go straight to a good idle and then the idle rise up for about 6-7 sec and came down to a good idle again.Ive try to put my p5 in the same car and tune was perfect.Thats mean nothing wrong with my fuel tank,hose and anything got to do with the car.One of my friend has the exact same problem with his plus4btt with same pipe[9901/021) and ive try to tune it without sucsess.Its runs good on the track tho but just cant get rid of the 3 stage idle..weird!Can someone help me please?
I had the same issue with my R21 Nitrotec(Very similar to +4) and two stage idle but even with the two stage it ran great and would idle forever. I finally tuned it out of the two stage idle by leaning the bottom until it starts to idle high then back off your idle screw until it is where you like it. I also had to richen top a little because after wot it idles normal for a couple seconds and then drops to 4 stroke idle. The odonnell 97t is also part of the reason I was getting two stage idle and because it's to rich on bottom and to big of a idle gap. I retuned and switched to 77t plugs now it idles perfect! Good Luck!
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Old 12-02-2011 | 04:37 AM
  #1902  
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Thanks for the replys guys!I appreciate it but my problem is 3 stage idle not 2 stage idle.Ive broken in 5 engines so far and never had this problem.2 stage idle is normal when the lsn is a little rich.The idle came straight down after high rev like it should be when lsn is set right but then it rise up for 6-7sec before it came down to normal idle again.No flame out what so ever and running temp is good.i know this is a great engine because i ran nova p5xlt this year and it served me very well.Anyway i might try diff glow plug and play with the shim a little more and see what happen...

This is my setup same as my p5xlt
Glow plug odonell 97t
Fuel Sidewinder 25%
Pipe Losi re12
Shim .70
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Old 12-02-2011 | 08:06 PM
  #1903  
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Originally Posted by Mohd Zailani
Thanks for the replys guys!I appreciate it but my problem is 3 stage idle not 2 stage idle.Ive broken in 5 engines so far and never had this problem.2 stage idle is normal when the lsn is a little rich.The idle came straight down after high rev like it should be when lsn is set right but then it rise up for 6-7sec before it came down to normal idle again.No flame out what so ever and running temp is good.i know this is a great engine because i ran nova p5xlt this year and it served me very well.Anyway i might try diff glow plug and play with the shim a little more and see what happen...

This is my setup same as my p5xlt
Glow plug odonell 97t
Fuel Sidewinder 25%
Pipe Losi re12
Shim .70
usually too lean lsn for compression ratio/timing ,(shimming and the heat range of plug) , try richening lsn 3 hrs , adjust the idle gap and start from there


change your odonnell plugs often !!! they will wreak havoc with your tune if you do not , i would suggest c5tgc personally



hope this helps
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Old 12-03-2011 | 01:56 AM
  #1904  
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Currently Im running 25% fuel, can I run 30% in my plus4 btt without having to shim the head?
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Old 12-03-2011 | 09:20 AM
  #1905  
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Originally Posted by Nitro Tiger
Currently Im running 25% fuel, can I run 30% in my plus4 btt without having to shim the head?
Yes no issues at all
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