xray808-11

when you lean the LSN the idle should get higher...
So try to lean the idle too

my idle is closer to 0.5mm.

if your engine temp start to be higher then ritchen the HSN.

this usely works with my novarossi 4

Sideshow Bob

i broke in my new O.S this weekend using the break in and tuning method on the WERKS B6 thread (first post). In my honest - Nitro engine Noob - opinion that is by far the easiest and best breaking-in/ tuning method there is, having read most of the long winded ones on this forum that assume you have at least SOME nitro knowledge..it takes the guess work out of it...all you need is to listen to what the engine is telling you. for the first time ever (alone) I got my new engine tuned PERFECTLY.

it worked great for me:

http://www.rctech.net/forum/offroad-...ng-engine.html

thanks to WERKS for posting this method

charlesandstuff

iTrader: (37)

I am also having a problem after idling for a little big and pressing throttle it logging really bad or flaming out and after I start it from starter box it does the same thing.. bogs really bad or dies. Am I just needing to lean the lsn an hour?

houston

iTrader: (96)

probably more like a full turn

Lille-bror

Hey.
A very experiend Danish nitro engine user, told me this a few month ago:

"When e.g. Adam Drake runs a very little venturi (5.5, 5.4 or 5.0???) he risk the life of his engine: Only a little wheelspin (too much throttle during acceleration) or throttle when the car is upside down, the temp will increase to +200º Celsius in no time due to the small venturi!"

Is that true???

If yes, Adam and all other using small venturies, will not be able to add some throttle while juimping etc. etc..

CoryD

iTrader: (2)

This is probably the wrong thread, but how is the performance of "THE Engine" compared to the new OS Speed engines?

Thanks,

jabroni racing

iTrader: (46)

Hopefully a quick question...
Basically, once your motor is tuned,you have a good idle & can pull rigger after say 12-15 seconds and it pulls with a slight rich feel , as long as the temps dont keep climbing and stay in a consistent range, "example 235-245", and you dont get lean bog your fine is that correct..

houston

iTrader: (96)

Close enough jabroni

Wallee

iTrader: (1)

Just followed this tuning bible on a engine that has been giving me fits and man I have to thank the author so very much for taking the time to help a fellow man to enjoy such a great hobby. I was truly frustrated with this engine and I am by no means new to nitro engines but by following this guide to a T I fixed my problem. My engine had completly lost its tune and was waaay out of wack and this helped me control the beast of and engine! Great write up no wonder it is sticky'ed to the top!!!

clownie39

Hi i have a HPI Evo3 RS4 rtr stock motor and i was wanting to know if you could tell me the exact adjustment and wich was the high and low.I also have a losi GTX but i think i got it close to running right it has the os max mach .12 i just want them both to run good

the daddy

Say if it was 0 degrees outside could you tune your engine to the same temp as if it was 30 degrees say 121.1 degrees

Lille-bror

Hi.

No, if you tune it to e.g. 120ºC it will be too lean. Here in Denmark we have an indoor race in the winther. Ambient temp is between -5 to 10ºC. In 0ºC our engines will be 80-90ºC, in 5ºC 90-100ºC. Many drivers lean their engines too much in cold weather because they look too much on the temp instead of how the engine perform. They ruin their engines due to too lean settings.

I've often seen drivers running their not fully broken-in engines at that race. With a little rich HSN the engine bearly gets 80ºC. That really hurts the engine due to too much friction between piston and sleeve.

Personal I wrap the head in a piece of air filter foam the get into the 100ºC range.

the daddy

Thanks that makes perfect sence

respirologyrc

Hi guys: experienced racer gone dumb... Haha that be ME. So here's my problem: i have found my hsn settings and can get to wot with good smoke (actually a bit more than what i care for but for now it works)....my problem is low end. When i do a high speed run and slam on the breaks or even allow it to come in coasting to a slow hault; the engine will sound as if it is high idling for 3-4secs then after this high idling it will return to the normal low idle that we all know. I have tried richening my lsn needle. My idle gap is at 1mm. I have tried decreasing my idle gap but when i do this, the engine will turn off once it gets past the high idling. What can i do to fix this??? Oh one more thing; this engine used to be in perfect tune till last weekend when i started chasing a tune due to a clutch bell bearing failure. So i know there is nothing wrong with the engine (jammin .28). Thanks

Lille-bror

Sounds like too rich LSN. Lean it a little and close the idle gab a little. Between every retune give the engine some throttle so the engine doesn't load up. Remember small adjustments at a time. You want a steady low idle speed. Keep leaning the LSN and adjust the idle gab untill you get to that point. Your LSN are only too lean if the engine starts to increase the RPM after a few seconds of idle. Personally I like to know where that point is. At that stage turn the LSN out just a little and you have a rocket on wheels