Novarossi engines thread
#3677
Hello,
I have a question regarding my Novarossi engines .12 FLASH and 353S. First I always tune the high speed needle then the low speed. While the high speed needle is no problem I have a ‘’strange’’ problem with the low speed. Either the engine goes in high rpm while idle or it dies (crank case goes full of fuel and the result is a vary bad throttle response) after 4-5sec!? From one state to the other I turn the low speed not even a quarter of a turn (10 minutes on a clock maybe).
What could this be? I read that the compression may be the problem so I could change the shims under the head but add or remove them? I use a Novarossi Glow Plug No6 and EFRA 2652 pipe.
Thanks for any advice.
Cheers
I have a question regarding my Novarossi engines .12 FLASH and 353S. First I always tune the high speed needle then the low speed. While the high speed needle is no problem I have a ‘’strange’’ problem with the low speed. Either the engine goes in high rpm while idle or it dies (crank case goes full of fuel and the result is a vary bad throttle response) after 4-5sec!? From one state to the other I turn the low speed not even a quarter of a turn (10 minutes on a clock maybe).
What could this be? I read that the compression may be the problem so I could change the shims under the head but add or remove them? I use a Novarossi Glow Plug No6 and EFRA 2652 pipe.
Thanks for any advice.
Cheers
#3678
Hello,
I have a question regarding my Novarossi engines .12 FLASH and 353S. First I always tune the high speed needle then the low speed. While the high speed needle is no problem I have a ‘’strange’’ problem with the low speed. Either the engine goes in high rpm while idle or it dies (crank case goes full of fuel and the result is a vary bad throttle response) after 4-5sec!? From one state to the other I turn the low speed not even a quarter of a turn (10 minutes on a clock maybe).
What could this be? I read that the compression may be the problem so I could change the shims under the head but add or remove them? I use a Novarossi Glow Plug No6 and EFRA 2652 pipe.
Thanks for any advice.
I have a question regarding my Novarossi engines .12 FLASH and 353S. First I always tune the high speed needle then the low speed. While the high speed needle is no problem I have a ‘’strange’’ problem with the low speed. Either the engine goes in high rpm while idle or it dies (crank case goes full of fuel and the result is a vary bad throttle response) after 4-5sec!? From one state to the other I turn the low speed not even a quarter of a turn (10 minutes on a clock maybe).
What could this be? I read that the compression may be the problem so I could change the shims under the head but add or remove them? I use a Novarossi Glow Plug No6 and EFRA 2652 pipe.
Thanks for any advice.
#3679
Regards, Lojz
#3680
Tech Elite
iTrader: (52)
Geberit, not knowing how old your motors are, the things I always do is reset the engine settings to 2.5 low, an 4.5 top, if it still is irratic, then depending on how old it is, could be front bearing or rod, or possible air leak.
what your describing sounds the opposite - bottom too lean. usually rich bottom will idle then drop and die. too lean and it idles then rpm goes up.
what your describing sounds the opposite - bottom too lean. usually rich bottom will idle then drop and die. too lean and it idles then rpm goes up.
#3682
novarossi onroad engines
interesting,.wish i had of seen this a few days ago,.i just got myself a new flash .21 special tuned for my evolva,got it a decent price.i debated the 35+21 the collari .21 etc etc,. but decided to go with the latest flash special .21,turbo, 9 ports, 2.98 HP ceramic bearings etc etc
its a pretty wild little engine and i have not 1 regret,.i am going to try the "AT platinum" nitro fuel,.anyone used this? im in Australia so am a little limited on brands of nitro etc..
its a pretty wild little engine and i have not 1 regret,.i am going to try the "AT platinum" nitro fuel,.anyone used this? im in Australia so am a little limited on brands of nitro etc..
#3683
do the gas coolers really make a difference?
#3685
#3686
Tech Elite
iTrader: (34)
Hey guys, I have a FLASH .12.
Does anyone know how the powerband of this engine behaves? I need a completely all-around engine. I mean, I need bottom/middle/top at the best fuel efficiency possible.
I really would like to know at what point does this engine scream so I can advise the person who is going to modify my engine where to take off in order to achieve a more balanced engine.
This is the track where I race at:
As you can probably notice, the straightaway is very long, so I need some top end (and there's two of them). But there are a lot of U turns, so bottom end is needed to.
Does anyone know how the powerband of this engine behaves? I need a completely all-around engine. I mean, I need bottom/middle/top at the best fuel efficiency possible.
I really would like to know at what point does this engine scream so I can advise the person who is going to modify my engine where to take off in order to achieve a more balanced engine.
This is the track where I race at:
+ YouTube Video | |
As you can probably notice, the straightaway is very long, so I need some top end (and there's two of them). But there are a lot of U turns, so bottom end is needed to.
#3687
Tech Fanatic
iTrader: (7)
Hey guys, I have a FLASH .12.
Does anyone know how the powerband of this engine behaves? I need a completely all-around engine. I mean, I need bottom/middle/top at the best fuel efficiency possible.
I really would like to know at what point does this engine scream so I can advise the person who is going to modify my engine where to take off in order to achieve a more balanced engine.
This is the track where I race at:
As you can probably notice, the straightaway is very long, so I need some top end (and there's two of them). But there are a lot of U turns, so bottom end is needed to.
Does anyone know how the powerband of this engine behaves? I need a completely all-around engine. I mean, I need bottom/middle/top at the best fuel efficiency possible.
I really would like to know at what point does this engine scream so I can advise the person who is going to modify my engine where to take off in order to achieve a more balanced engine.
This is the track where I race at:
+ YouTube Video | |
As you can probably notice, the straightaway is very long, so I need some top end (and there's two of them). But there are a lot of U turns, so bottom end is needed to.
#3688
Tech Fanatic
iTrader: (7)
Quick question about the rod in the Flash 12. I ordered the 7604 because its about time to replace it. I open the Flash up and it says N2 at the bottom. the one I ordered has an N1. What is the diffrence? Its the correct part #. I know my 353/09 had the N1. Just a diffrent production year?
Thanks guys!
Thanks guys!
#3689
Something did go wrong in here.....
The P/S set does have some smal damages but seems to be alive.
The P/S set does have some smal damages but seems to be alive.