352LikesNOVAROSSI Engine thread....
07-04-2014 | 01:30 AM
#6886
Whats the go with the virtus? Is the engine that much better its worth the coin? What kinda powerband does it have and so many people run them? just interested in them is all cos they look like a hella nice engine!!
07-05-2014 | 09:40 PM
#6888
Tech Master
Joined: Feb 2014
Posts: 1,042
From: Malaysia, Sabah
Cant comment on that. But practical if u need to know how good it is, just try to chase and see how fast it is. Most ppl just follow the trend blindly n forget how good their existing engine.
07-06-2014 | 10:28 AM
#6889
Tech Apprentice
iTrader: (4)
Joined: Jul 2009
Posts: 60
From: mobile alabama
Whatever you do, If you think it has a whining type bearing noise do not keep running it as you will only further damage the rest of the engine
Have someone inspect the engine if your not confident yourself, Replace the bearing if need be
If you did have to replace it have a good look at it for rusting and be honest with yourself about weather or not your after run technique (if you do so) could be letting your bearings fail early
Also have a good look at the crank portion that is exposed to the air/fuel charge from your carb (when the crank's intake port is not lined up) and see if it is scored from fine dirt or dust ingestion, You may also want to inspect your front bearing for dirt
Another thing to look into will be your fuel, see if anyone using the same batch has had problems etc
Just because the engine has oil in it when you stop it after idling does not necessarily mean that the lubrication package is looking after your bearing in high rpm / Load and or heat situations
And if you cant find any other obvious issues it may be fair to say you got a not so good bearing from Novarossi... it can happen and does with all engine brands at times but firstly have some one look at the engine who knows a little about it before you want to blame Novarossi for a bad bearing (not that im saying that you are doing so or don't know what your looking at)
I have often seen people wanting to blame Novarossi for a "bad bearing" when in fact upon pulling the engine down the engine has digested that much dirt its not funny, Or when the bearing shows obvious sings of rust!!
Or when the engine had been ran with a fuel that no one knows anything about...
1.6 Gal or six liters of fuel does not seem like allot of engine usage but if there is something upsetting a bearing that is doing close to 40.000 Rpm then it is huge
When you buy a high quality engine in particular like Novarossi i think its fair to say that the new factory installed bearing has absolutely nothing wrong with it and it is then only running conditions or maintenance issues which cause it to fail.. at least 99% of the time anyway
Also, & particularly in Offroad racing we have a huge amount of variables on the track as far as engine loads and temps are concerned without even considering after run issues, So if one engine bearing lasts say 10-15 liters and another lasts 30-40 liters then we cant say that has anything to do with bearing quality from the factory.. specially with the load and rpm these things do
I don't mean to rant on but i have had one to many people lately want to complain about a "Bad Novarossi bearing" when the user in some cases DOES NOT EVEN RUN THEIR ENGINE OUT OF FUEL at the end of a race day!!
I think i MAY have had one genuine case for a premature bearing failure which is questionable in the past year / 100 odd Novarossi engines sold, That bearing is recent and yet to be inspected
Bottom line is if Novarossi are fitting bad bearings to engines we wont see a post in here once or twice a year questioning such, Instead we will start getting five a week...
Dave,
FUSION X ENGINES AUATRALIA
Have someone inspect the engine if your not confident yourself, Replace the bearing if need be
If you did have to replace it have a good look at it for rusting and be honest with yourself about weather or not your after run technique (if you do so) could be letting your bearings fail early
Also have a good look at the crank portion that is exposed to the air/fuel charge from your carb (when the crank's intake port is not lined up) and see if it is scored from fine dirt or dust ingestion, You may also want to inspect your front bearing for dirt
Another thing to look into will be your fuel, see if anyone using the same batch has had problems etc
Just because the engine has oil in it when you stop it after idling does not necessarily mean that the lubrication package is looking after your bearing in high rpm / Load and or heat situations
And if you cant find any other obvious issues it may be fair to say you got a not so good bearing from Novarossi... it can happen and does with all engine brands at times but firstly have some one look at the engine who knows a little about it before you want to blame Novarossi for a bad bearing (not that im saying that you are doing so or don't know what your looking at)
I have often seen people wanting to blame Novarossi for a "bad bearing" when in fact upon pulling the engine down the engine has digested that much dirt its not funny, Or when the bearing shows obvious sings of rust!!
Or when the engine had been ran with a fuel that no one knows anything about...
1.6 Gal or six liters of fuel does not seem like allot of engine usage but if there is something upsetting a bearing that is doing close to 40.000 Rpm then it is huge
When you buy a high quality engine in particular like Novarossi i think its fair to say that the new factory installed bearing has absolutely nothing wrong with it and it is then only running conditions or maintenance issues which cause it to fail.. at least 99% of the time anyway
Also, & particularly in Offroad racing we have a huge amount of variables on the track as far as engine loads and temps are concerned without even considering after run issues, So if one engine bearing lasts say 10-15 liters and another lasts 30-40 liters then we cant say that has anything to do with bearing quality from the factory.. specially with the load and rpm these things do
I don't mean to rant on but i have had one to many people lately want to complain about a "Bad Novarossi bearing" when the user in some cases DOES NOT EVEN RUN THEIR ENGINE OUT OF FUEL at the end of a race day!!
I think i MAY have had one genuine case for a premature bearing failure which is questionable in the past year / 100 odd Novarossi engines sold, That bearing is recent and yet to be inspected
Bottom line is if Novarossi are fitting bad bearings to engines we wont see a post in here once or twice a year questioning such, Instead we will start getting five a week...
Dave,
FUSION X ENGINES AUATRALIA
Thanks Dave for the advice...my after run is horrible I actually don't do any...I always thought it was not a good idea to run it out of fuel and don't use after run...but I do now.....I always empty the tank out though. So yes not much there...now as far as the bearings the rear bearing was shot ...first pulled carb and discovered slight rust on crank..finally got motor tore down and p/s and rod all look real good..installed new front/rear bearings and all is good now....do you think maybe shelf life waiting to be purchased could have something to do with it? Oh I was running Byron's but lhs does not stock anymore(which sux guess you have to go with the flow) so now its VP and I just don't know there....miss Byron's....now stuck with a case of possibly bad fuel..
07-06-2014 | 10:39 AM
#6890
Tech Apprentice
iTrader: (4)
Joined: Jul 2009
Posts: 60
From: mobile alabama
Yes that's what sux is hobby town was carrying Byron's and now its VP...all cause a couple want to change and leaves the rest out..smh...funny I talked to David bout this and he was not leaning toward blaming fuel more suggesting shelf before sold...hmmm. Anyways you wanna buy a case of fun??lol
07-06-2014 | 08:58 PM
#6897
07-07-2014 | 07:45 AM
#6899
Thanks Dave for the advice...my after run is horrible I actually don't do any...I always thought it was not a good idea to run it out of fuel and don't use after run...but I do now.....I always empty the tank out though. So yes not much there...now as far as the bearings the rear bearing was shot ...first pulled carb and discovered slight rust on crank..finally got motor tore down and p/s and rod all look real good..installed new front/rear bearings and all is good now....do you think maybe shelf life waiting to be purchased could have something to do with it? Oh I was running Byron's but lhs does not stock anymore(which sux guess you have to go with the flow) so now its VP and I just don't know there....miss Byron's....now stuck with a case of possibly bad fuel..
No problems,
Many people get away without using after run oils if they run the fuel out of the engine and a nice film of oil is left inside.. and they run their engines every week or two but this is not something everyone can abide by as different fuels are better at doing this job than others and different environments play a big part also, So this is something everyone has to figure out for themselves as to what suits their situation
I have never seen an engine rust on the shelf in its new state it left the factory in... it would take years for this to happen, it will be since it has been used
Although i read many people not liking VP fuel on rc tech from what i have seen so far out here it seems to be fine
You will never hurt your engine by running it out of fuel whilst its idling
Using and liking a particular fuel and then it not been available does indeed suck!, It is something we see very often here in Australia
Dave,
FUSION X ENGINES AUSTRALIA
07-07-2014 | 04:30 PM
#6900
[QUOTE=FUSIONX AUS/NZ;13384657]No problems,
Many people get away without using after run oils if they run the fuel out of the engine and a nice film of oil is left inside.. and they run their engines every week or two but this is not something everyone can abide by as different fuels are better at doing this job than others and different environments play a big part also, So this is something everyone has to figure out for themselves as to what suits their situation
After having an engine build up rust and gunk making it run horribly inconsistent, after not even 8L, Im paranoid now. I did run it try and put after run oil. I go to the track a handful of times each year so the engine is idle most of the time.
I have swapped fuels so I'll see how I go this time.
What is the best way to clean the motor after each race? Im assuming spraying nitro motor cleaner on the internals is OK but is it OK on the bearings? Is the case thingy that holds the bearings in place made from plastic? Will nitro cleaner or other solvent ruin the bearings?
Many people get away without using after run oils if they run the fuel out of the engine and a nice film of oil is left inside.. and they run their engines every week or two but this is not something everyone can abide by as different fuels are better at doing this job than others and different environments play a big part also, So this is something everyone has to figure out for themselves as to what suits their situation
After having an engine build up rust and gunk making it run horribly inconsistent, after not even 8L, Im paranoid now. I did run it try and put after run oil. I go to the track a handful of times each year so the engine is idle most of the time.
I have swapped fuels so I'll see how I go this time.
What is the best way to clean the motor after each race? Im assuming spraying nitro motor cleaner on the internals is OK but is it OK on the bearings? Is the case thingy that holds the bearings in place made from plastic? Will nitro cleaner or other solvent ruin the bearings?