NOVAROSSI Engine thread....
#9557
Novarossi is obligated to sell at retail, the other isnt and helps many others get into the hobby. Novarossi direct is a good place to buy.
#9559
Tech Apprentice
Joined: Nov 2015
Posts: 51
So I'm breaking in a roma 25 and temps always 200-210 the whole time.i heat cycled the engine 3 times the first tank and one more the first half of 2nd tank.then the rest of 2.d tank 1/4 throttle,3rd tank 1/4-1/2 varying throttle then 4th tank same as 3rd but a little more 1/2 throttle bursts.afterwards I took the glow plug out to check pinch while hot and it's completely gone but still has pinch when cold.running 30/11 byrons with the 6.5mm insert that cane with engine.so I'm wondering if somehow I screwed up the engine or is it ready this quickly.its never been in dirt,concrete only so far.its kinda worrying me as I've broken in tons of engines and haven't had this happen.thanks for any input guys.
#9560
Hello Mfavor,
I would suggest that You should not be worried. A completely Broken-in Race Ready 2 stroke R/C engine will not have "Pinch" when it is Hot or even close to Operating Temperature. It will have a "Pinch" while it is on the resting/room temperature..
Cheers..
I would suggest that You should not be worried. A completely Broken-in Race Ready 2 stroke R/C engine will not have "Pinch" when it is Hot or even close to Operating Temperature. It will have a "Pinch" while it is on the resting/room temperature..
Cheers..

So I'm breaking in a roma 25 and temps always 200-210 the whole time.i heat cycled the engine 3 times the first tank and one more the first half of 2nd tank.then the rest of 2.d tank 1/4 throttle,3rd tank 1/4-1/2 varying throttle then 4th tank same as 3rd but a little more 1/2 throttle bursts.afterwards I took the glow plug out to check pinch while hot and it's completely gone but still has pinch when cold.running 30/11 byrons with the 6.5mm insert that cane with engine.so I'm wondering if somehow I screwed up the engine or is it ready this quickly.its never been in dirt,concrete only so far.its kinda worrying me as I've broken in tons of engines and haven't had this happen.thanks for any input guys.
#9561
Tech Master
iTrader: (47)
Joined: Jan 2011
Posts: 1,166
From: Wichita,KS
Are asking about the glow plug has burnt out? That can happen. Doesn't mean there is a problem with the engine.
Your engine should have pinch after 4 or 5 tanks. I have over 3 quarts of fuel in my novarossi and still not broke in.
Your engine should have pinch after 4 or 5 tanks. I have over 3 quarts of fuel in my novarossi and still not broke in.
#9563
2069/41021 smooth n good top end, 9901/41032 snappy n excellent top
#9564
Tech Regular
Joined: Apr 2016
Posts: 278
From: Portugal
In some cases more than 100 €.
For me it does not pay to buy in Direct USA because then when I arrive in Portugal I have to pay another 23% TAX on the price.
#9565
Tech Apprentice
Joined: Nov 2015
Posts: 51
Hello Mfavor,
I would suggest that You should not be worried. A completely Broken-in Race Ready 2 stroke R/C engine will not have "Pinch" when it is Hot or even close to Operating Temperature. It will have a "Pinch" while it is on the resting/room temperature..
Cheers..
I would suggest that You should not be worried. A completely Broken-in Race Ready 2 stroke R/C engine will not have "Pinch" when it is Hot or even close to Operating Temperature. It will have a "Pinch" while it is on the resting/room temperature..
Cheers..

#9566
Hello Mfavor,
During the ending cycle of my Break-In Process I usually try to feel if there is still a "Mechanical Pinch" while it's Hot or not. If I could feel there is still a pinch then I will not lean it to Racing Tune. Patiently run the engine again at about 80% until it "Loosen Up" at close to maximum operating temperature..
Cheers..
During the ending cycle of my Break-In Process I usually try to feel if there is still a "Mechanical Pinch" while it's Hot or not. If I could feel there is still a pinch then I will not lean it to Racing Tune. Patiently run the engine again at about 80% until it "Loosen Up" at close to maximum operating temperature..
Cheers..

Yea that's what I figured.so yea when it's cold it's got alot of mechanical pinch still but when at running temp it's smooth and I can roll the flywheel over.so I guess this engine is ready to be beaten on some already.every engine is different so I suppose I'll start leaning it out and having fun with it.ive got a little over 7 tanks through it at this point.thanks alot.
#9567
Hello Mfavor,
During the ending cycle of my Break-In Process I usually try to feel if there is still a "Mechanical Pinch" while it's Hot or not. If I could feel there is still a pinch then I will not lean it to Racing Tune. Patiently run the engine again at about 80% until it "Loosen Up" at close to maximum operating temperature..
Cheers..
During the ending cycle of my Break-In Process I usually try to feel if there is still a "Mechanical Pinch" while it's Hot or not. If I could feel there is still a pinch then I will not lean it to Racing Tune. Patiently run the engine again at about 80% until it "Loosen Up" at close to maximum operating temperature..
Cheers..

#9568
You'll know when the engine is fully broken in because it will keep consistent tune. A engine will get progressively richer as the engine breaks in (if you don't keep leaning the HSN). Once fully broken in the engine will maintain tune throughout the whole tank. I don't worry about pinch etc just look for the engine 'dropping it's nuts' as detailed above.
#9569
Will this Tko ceramic bearing work in the Mito4
TKO-CB-MR26145
TKO Ceramic 14.5x26x6mm
http://images.amain.com/images/large...o-cb-mr26145_1
TKO-CB-MR26145
TKO Ceramic 14.5x26x6mm
http://images.amain.com/images/large...o-cb-mr26145_1



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