@@kings-racing Interesting that new bearing was already bad, usually bad / worn out rear bearing starts to burn glow plugs. But thats great that problem is now solved 🙂
Happy to see that. I always liked reds engines. Here many ppl said is so hard to keep the engine up after break in. Some unexplained stops after Crash or rollovers. Ill keep my corsatec working this year. Next one maybe IS a reds.
Yes indeed. And this probably is why a lot guys have this issue with these engines. I have a strong suspicion a lot of bad bearings went into gen2 engines and were sold. Really glad i found it and hopefully it will help others. Thanks for watching buddy
Yes, replace the rear bearing. Preferably to another brand. I suspect some bad Reds bearings went into engines and bearings of the same batch sold separately.. Hopefully this will solve your issue..
@@kings-racing how does a rear bearing cause this issue? its inside the engine... nowhere to leak to atmosphere.. normally it would be the front bearing?
@TastyB if a lot of guys have the exact same issue as i had. A lot of bad bearings went in gen2 engines and were sold. I don't know if Reds is aware of that.
Running perfect. Took some time to figure it out. With all the things i tried it had to be something in the crankcase. Who would expect a new bearing with a flaw..
@@kings-racing I value your knowledge so I have question about an engine. What would cause a brand new engine ( ran 4 tanks idling, everything normal) to kill the glow plug after the engine stops? The engine runs perfectly ( idling, responsive, …), it just kills the glow plug after the engine is stopped. This happened 3 times in succession. No contact marks on glow plug or top of piston. Didn’t do this during the initial idling tanks. Once it hit the ground for some easy after idling tanks this started. Bam bam bam, three plugs, and they weren’t all the same brand plug. I run 30%. Could it be a shimming situation with the head button? I totally don’t get what is happening after the engine is stopped by me that makes this strange occurrence happen. I’m kind of ocd when it comes to this stuff and when I can’t figure something out it frazzles my mind. I’ve never experienced any glow plug problems in any engine and this things eats up 3 in a row. Thoughts on the matter? P.S. I love the technical aspect of your channel, that’s what gravitates me to your videos. Hence why I’m asking YOU specifically this question.
@@kings-racing Now, post Covid times ? Me! It’s seems to me like the whole world has taken a “ it’s acceptable “ approach on things and junk stuff is spit out everywhere, everyday, by everyone in general. And then they want more money for their junk products. Whether it’s their product or labor, people don’t take pride in anything anymore. In my eyes anyway.
@@kings-racing Wasn’t it TastyB that recently did a take apart and look video on a Reds engine that was a friends and it had a crack in the crankcase just outside of the sleeve? Like a month or month and a half ago? 🤷🏼♂
@@mikeh.748 that's very strange indeed. If you say the engine is running perfect. It's unlikely that it's caused by the head shimming. You would definitely hear when it's pre detonating. It would get to hot and the plug may loose it's catalytic reaction. I asume you stop the engine on the flywheel. Plugging the exhaust could destroy plugs too. A bad bearing can cause plugs to die aswell. But if your engine is running perfect this is very strange. Yes, Tasty B uploaded another vid on it. It does look like a crack to me, but think it's not al the way through. So it doesn't effect it. His friend had the same issue as i had. I did hear in that video at 5:45 that his rear bearing sounded terrible. Think if his friend has changed the bearing it would run good. He is gonna do that and will keep us posted. Hopefully his issue is solved too
I try to make the smallest adjustments when breaking in and tuning my nitro cars. I see people get into a rush and can never seem to find the right tune.
Yes, small adjustments. I see people that are happy when the engine revs and stays running. They either don't care if the tune is good, how their engine is running or just don't hear it.
Me too bro.👊 Can't stand a inconsistent engine. When i heard Tasty B running his friends engine. I knew it. That bearing sounded even more terrible than mine. Since a lot of guys have the exact same issue with the 721's, i suspect a lot of bearings with a flaw went into gen2 engines or were sold. Hope it helps more guys solve their issue with these engines.
@@kings-racing definitely mate it was like looking at two different motors, well done glad it’s sorted bro keep up the good work love that track bro love to see a video on the new Xray bro an here how it is holding up 🤜💯💥🇦🇺
Great Brother!! Did you see my comment on what i thought it was i had same issue on a Picco 26 max and thats how i knew what it was .i bought a set of Bocca ceramic bearings as well and Wala it would tune after i got broke in 💯!! Nice Job Brother!!
Hell yeah brother. It's like that phenomenon when you are reading or watching something and your wife talks to you. You don't hear her and she says " you never listen" 😂 To focused on tuning and don't hear that rear bearing. Same thing lol Replaced it and Wala, running perfect Thanks brother
Thanks for the fun vid 🩷 Did you replace only the Rear bearing? With what brand? - What are your thought on why a rear bearing by itself, would affect low end tune? Or was it more a rolling resistance issue or what? Interested in your thoughts - Could something else or in addition could have been apart of the issue? Like a clogged vacuum passage, etc Regardless, she sound good now. Nice work 💯
My pleasure buddy Yes, only the rear bearing. I replaced it with a J&T bearing. It could be mechanical resistance, but since there was no issue on a rich setting i suspect a fuel mixture flow disturbance like i said. Fuel getting through the bearing because of to much play. Engine runs lean untill you stop and let it idle. Engine fills up a bit, seals the bearing and runs rich for a moment. Idle drops. Then the seal lets of and starts running lean again. Thereafter seal and rich again and stalls out. From corner to corner the idle reacted on how much throttle i gave before it. So think this is why my engine showed that behavior. If more guys have the exact same issue i had, i suspect a lot of bearings with a flaw went into gen2 engines or were sold. So no magic amount of fuel.😆 Myth busted.
@@kings-racing lol 100% there’s no Magic amount of fuel 😂 - I’m curious to hear over time if others replace the bearing and their issue is fixed too. It’s just an odd thing to affect “tune”. We know the bearing is the main support and is critical in that regard but, otherwise the bearing doesn’t interact with the air/fuel flow. It’s trapped in the middle. - Just for fun, Take a close look at the bearing Kings. Does the cage look odd or different when compared to other bearings? I agree about the rich setting and loading the bearing idea you said but, also maybe the design of the cage could be creating/adding additional turbulence in the case. Not sure 🤷🏻♂️ Sorry for all the questions. Like you, I love to learn and investigate. It’s a blessing and a curse Thanks again for taking the time to reply 🩷
@@a2rc that expression was to funny. 😂 I said i was gonna keep that in. Yes, very curious. I'm pretty sure that's the problem of the engine Tasty B was running from his friend. That bearing sounded even worse than mine. Think this is the case on a lot of 721's. Looking forward to hear from the guys in the comments who had the same issue. Maybe that bearing does interact with fuel flow. There isn't the same amount of fuel between the front & rear bearing and in the rest of the crankcase. Just a little bit between front and rear for lubrication and sealing the bearings due vacuum and movement, So a rear bearing could seal. Don't know for sure , just a theory. Maybe even different under pressure in those areas aswell. I don't know. Then turbulence or changes in the under pressure might be a factor. That's very hard to tell I did compare the bearings. The cage looks similar but the inner ring is more firm on the Swiss Made Reds bearing. Maybe also a bigger edge inside. But that could be a optical illusion. The Reds bearing definitely had more play than the J&T bearing. I like those questions. That's what's bring us further and learning. Thanks buddy. Blessing and curse indeed. I can finally sleep well again now i found the issue lol
Thanks Thompson. I can't stand a inconsistent engine. I was very eager to find out what the issue was. With all the things i tried it had to be something in the crankcase.
Thanks Robert. Yes, very weird. Think it caused a disturbance in fuel flow. Was talking with A2RC in the comments about that. Feel free to read it and give your opinion on why it had that kind of behavior.
@@kings-racingjust had a read, very interesting indeed. I suppose so many small things can affect these tiny engines lol. I have a reds wr5 which had an irratic idle but that was the plug in the end which was an easy fix. Glad you got it sorted anyway 😊
I have a 721 gen2 and a 723 truggy gen2 both made in 2022. Both have the same problem. Cant get a stable idle. Just did a break in on the 723 and I notice that it vibrates a lot more than my FX502, but no weird noises. Did you notice more vibration with stock bearing? Or less with new JT bearing?
I didn't notice any vibrations. It wasn't untill i was watching the footage till i heard it. Think a lot of reds bearings have this issue. We are not the only ones. Definitely try a new non reds bearing.
@@kings-racing I took the bearings from a brand new OS xrbV3 motor and put in the 723. Still have issue with return to idle and double idle and sometimes stall. Tried different glowplugs and both .4mm stock shim and 0.5mm shim. Too bad because the 723 has awesome power for my Xray XT8 truggy
That's good to hear. I always thought it was strange there were so many different stories on these engines. A lot of guys with issues and guys with no complaints at all. In my previous video i tried just about everything to solve the inconsistency. Even adding a headshim. Nothing seem to work. Until i replaced the rear bearing. That solved the issue. Since a lot of guys in general and in the comments on that video experienced the exact same thing. I have a strong suspicion a batch of bad bearings went into a lot of gen2 engines. Now it runs very good. Appreciate the comment.
Yes, definitely. 200% sure. Please read the conversation i had with A2RC in the comments. So i dont have to type al that again. Give me your thoughts on that if you want to. Thanks
Yes, there is no magic amount of fuel. I have a strong suspicion a batch of bad bearings went in a lot of gen2 engines. That's why a lot of guys have the same issue and some don't. So if you buy a bearing, buy another brand. I used a J&T bearing. I have two more Reds bearings from that time. Might aswell throw them away.
Feeling clutch engagement and grip, but turned in to a bad habit and difficult to unlearn.. Interesting how a lot of guys love these engines and a lot of guys hate them.
Its super cool everyone here working together can collectively figure out what the issue is with a few of these 721's
It's very nice. Hope it helps a lot of other guys. Who would expect a bad bearing when it's new or in a new engine
@@kings-racing Interesting that new bearing was already bad, usually bad / worn out rear bearing starts to burn glow plugs. But thats great that problem is now solved 🙂
@@kings-racing how does the rear bearing cause issues?
Happy to see that. I always liked reds engines. Here many ppl said is so hard to keep the engine up after break in. Some unexplained stops after Crash or rollovers. Ill keep my corsatec working this year. Next one maybe IS a reds.
I'm glad i found it. Might be a typical gen2 disease. Now we know that it is most likely the rear ceramic bearing.
Nice work man. It’s amazing how the bearing was not that bad, but enough to cause a problem.
Thank you. Who would expect a bad bearing when it's new or in a new engine.
Weird that new bearing was already bad 😮 Usually bad /worn out rear bearing starts to burn glow plugs. Great that you manages to solve the problem 👍
Yes indeed. And this probably is why a lot guys have this issue with these engines. I have a strong suspicion a lot of bad bearings went into gen2 engines and were sold.
Really glad i found it and hopefully it will help others.
Thanks for watching buddy
Glad I watched this, I have had the same issue for a wihile. Will be changing bearings asap.
Yes, replace the rear bearing. Preferably to another brand. I suspect some bad Reds bearings went into engines and bearings of the same batch sold separately..
Hopefully this will solve your issue..
@@kings-racing how does a rear bearing cause this issue? its inside the engine... nowhere to leak to atmosphere.. normally it would be the front bearing?
Perfect. With so many people complaining about tuning issues with these engines Im sure reds is aware of the problem
My man!! Thank you for hopefully figuring this out for the rest of us! Great work!
@TastyB if a lot of guys have the exact same issue as i had. A lot of bad bearings went in gen2 engines and were sold. I don't know if Reds is aware of that.
@@mattfavor2940 Thanks bro. Hopefully it helps a lot of guys who have the exact same issue as i had.
@@kings-racing whats wrong with the bearing? is inside the engine, so cant leak... what else could it be?
She’s purring like a kitten. Glad you got it all figured out and idling good.
Running perfect. Took some time to figure it out. With all the things i tried it had to be something in the crankcase.
Who would expect a new bearing with a flaw..
@@kings-racing I value your knowledge so I have question about an engine. What would cause a brand new engine ( ran 4 tanks idling, everything normal) to kill the glow plug after the engine stops? The engine runs perfectly ( idling, responsive, …), it just kills the glow plug after the engine is stopped. This happened 3 times in succession. No contact marks on glow plug or top of piston. Didn’t do this during the initial idling tanks. Once it hit the ground for some easy after idling tanks this started. Bam bam bam, three plugs, and they weren’t all the same brand plug. I run 30%. Could it be a shimming situation with the head button? I totally don’t get what is happening after the engine is stopped by me that makes this strange occurrence happen. I’m kind of ocd when it comes to this stuff and when I can’t figure something out it frazzles my mind. I’ve never experienced any glow plug problems in any engine and this things eats up 3 in a row. Thoughts on the matter? P.S. I love the technical aspect of your channel, that’s what gravitates me to your videos. Hence why I’m asking YOU specifically this question.
@@kings-racing Now, post Covid times ? Me! It’s seems to me like the whole world has taken a “ it’s acceptable “ approach on things and junk stuff is spit out everywhere, everyday, by everyone in general. And then they want more money for their junk products. Whether it’s their product or labor, people don’t take pride in anything anymore. In my eyes anyway.
@@kings-racing Wasn’t it TastyB that recently did a take apart and look video on a Reds engine that was a friends and it had a crack in the crankcase just outside of the sleeve? Like a month or month and a half ago? 🤷🏼♂
@@mikeh.748 that's very strange indeed. If you say the engine is running perfect. It's unlikely that it's caused by the head shimming. You would definitely hear when it's pre detonating. It would get to hot and the plug may loose it's catalytic reaction.
I asume you stop the engine on the flywheel. Plugging the exhaust could destroy plugs too.
A bad bearing can cause plugs to die aswell. But if your engine is running perfect this is very strange.
Yes, Tasty B uploaded another vid on it. It does look like a crack to me, but think it's not al the way through. So it doesn't effect it. His friend had the same issue as i had. I did hear in that video at 5:45 that his rear bearing sounded terrible. Think if his friend has changed the bearing it would run good. He is gonna do that and will keep us posted. Hopefully his issue is solved too
I try to make the smallest adjustments when breaking in and tuning my nitro cars. I see people get into a rush and can never seem to find the right tune.
Yes, small adjustments. I see people that are happy when the engine revs and stays running. They either don't care if the tune is good, how their engine is running or just don't hear it.
I’m so glad you got it worked out bro definitely bearings so important an a easy fix 💯🤜💥🇦🇺
Me too bro.👊 Can't stand a inconsistent engine. When i heard Tasty B running his friends engine. I knew it. That bearing sounded even more terrible than mine. Since a lot of guys have the exact same issue with the 721's, i suspect a lot of bearings with a flaw went into gen2 engines or were sold. Hope it helps more guys solve their issue with these engines.
@@kings-racing definitely mate it was like looking at two different motors, well done glad it’s sorted bro keep up the good work love that track bro love to see a video on the new Xray bro an here how it is holding up 🤜💯💥🇦🇺
Great Brother!! Did you see my comment on what i thought it was i had same issue on a Picco 26 max and thats how i knew what it was .i bought a set of Bocca ceramic bearings as well and Wala it would tune after i got broke in 💯!! Nice Job Brother!!
Hell yeah brother. It's like that phenomenon when you are reading or watching something and your wife talks to you. You don't hear her and she says " you never listen" 😂
To focused on tuning and don't hear that rear bearing. Same thing lol
Replaced it and Wala, running perfect
Thanks brother
Thanks for the fun vid 🩷
Did you replace only the Rear bearing? With what brand?
- What are your thought on why a rear bearing by itself, would affect low end tune? Or was it more a rolling resistance issue or what? Interested in your thoughts
- Could something else or in addition could have been apart of the issue? Like a clogged vacuum passage, etc
Regardless, she sound good now. Nice work 💯
My pleasure buddy
Yes, only the rear bearing. I replaced it with a J&T bearing. It could be mechanical resistance, but since there was no issue on a rich setting i suspect a fuel mixture flow disturbance like i said. Fuel getting through the bearing because of to much play. Engine runs lean untill you stop and let it idle. Engine fills up a bit, seals the bearing and runs rich for a moment. Idle drops. Then the seal lets of and starts running lean again. Thereafter seal and rich again and stalls out.
From corner to corner the idle reacted on how much throttle i gave before it.
So think this is why my engine showed that behavior. If more guys have the exact same issue i had, i suspect a lot of bearings with a flaw went into gen2 engines or were sold.
So no magic amount of fuel.😆 Myth busted.
@@kings-racing lol 100% there’s no Magic amount of fuel 😂
- I’m curious to hear over time if others replace the bearing and their issue is fixed too. It’s just an odd thing to affect “tune”.
We know the bearing is the main support and is critical in that regard but, otherwise the bearing doesn’t interact with the air/fuel flow. It’s trapped in the middle.
- Just for fun, Take a close look at the bearing Kings. Does the cage look odd or different when compared to other bearings? I agree about the rich setting and loading the bearing idea you said but, also maybe the design of the cage could be creating/adding additional turbulence in the case. Not sure 🤷🏻♂️
Sorry for all the questions. Like you, I love to learn and investigate. It’s a blessing and a curse
Thanks again for taking the time to reply 🩷
@@a2rc that expression was to funny. 😂 I said i was gonna keep that in.
Yes, very curious. I'm pretty sure that's the problem of the engine Tasty B was running from his friend. That bearing sounded even worse than mine. Think this is the case on a lot of 721's. Looking forward to hear from the guys in the comments who had the same issue.
Maybe that bearing does interact with fuel flow. There isn't the same amount of fuel between the front & rear bearing and in the rest of the crankcase. Just a little bit between front and rear for lubrication and sealing the bearings due vacuum and movement, So a rear bearing could seal. Don't know for sure , just a theory. Maybe even different under pressure in those areas aswell. I don't know.
Then turbulence or changes in the under pressure might be a factor. That's very hard to tell
I did compare the bearings. The cage looks similar but the inner ring is more firm on the Swiss Made Reds bearing. Maybe also a bigger edge inside. But that could be a optical illusion.
The Reds bearing definitely had more play than the J&T bearing.
I like those questions. That's what's bring us further and learning.
Thanks buddy. Blessing and curse indeed. I can finally sleep well again now i found the issue lol
glad you sorted it you will love it now it runs good
Me too !!! I will definitely run this engine more and see how i like it.👊
Great work figuring it out Kings
Thanks Thompson. I can't stand a inconsistent engine. I was very eager to find out what the issue was. With all the things i tried it had to be something in the crankcase.
I had the same issue on one of my drake motors. Glad you got it
A rear bearing can cause strange inconsistenties. Glad i found it.
Appreciate the comment and you watching.
good to see ya got it worked out brother nice job
Thanks brother. Probably a lot of bad bearings in the gen2 engines.
Thats awesome, well done on sorting it. How weird that a rear bearing would cause that
Thanks Robert. Yes, very weird. Think it caused a disturbance in fuel flow. Was talking with A2RC in the comments about that. Feel free to read it and give your opinion on why it had that kind of behavior.
@@kings-racingjust had a read, very interesting indeed. I suppose so many small things can affect these tiny engines lol. I have a reds wr5 which had an irratic idle but that was the plug in the end which was an easy fix. Glad you got it sorted anyway 😊
I have a 721 gen2 and a 723 truggy gen2 both made in 2022. Both have the same problem. Cant get a stable idle. Just did a break in on the 723 and I notice that it vibrates a lot more than my FX502, but no weird noises. Did you notice more vibration with stock bearing? Or less with new JT bearing?
I didn't notice any vibrations. It wasn't untill i was watching the footage till i heard it. Think a lot of reds bearings have this issue. We are not the only ones. Definitely try a new non reds bearing.
@@kings-racing I took the bearings from a brand new OS xrbV3 motor and put in the 723. Still have issue with return to idle and double idle and sometimes stall. Tried different glowplugs and both .4mm stock shim and 0.5mm shim. Too bad because the 723 has awesome power for my Xray XT8 truggy
Good job Mr Nitro Engine 👌👌
Too funny 😂 Thanks buddy 👊
I had 3 of them. I always added another head shim and they always idle low and constant
That's good to hear. I always thought it was strange there were so many different stories on these engines. A lot of guys with issues and guys with no complaints at all.
In my previous video i tried just about everything to solve the inconsistency. Even adding a headshim. Nothing seem to work. Until i replaced the rear bearing. That solved the issue.
Since a lot of guys in general and in the comments on that video experienced the exact same thing. I have a strong suspicion a batch of bad bearings went into a lot of gen2 engines. Now it runs very good.
Appreciate the comment.
Hows it?? 👍alwsys kings 😊
Good again. I can finally sleep well after solving this 😆 Appreciate the thumbs up brother👊
This issue was caused by a bad rear bearing? How so?
Yes, definitely. 200% sure.
Please read the conversation i had with A2RC in the comments. So i dont have to type al that again. Give me your thoughts on that if you want to. Thanks
Did you replace with a steel or ceramic bearing?
Ceramic J&T bearing
Running awesome 🤙
O yes.🤙 Glad i found the issue.
My turn to do the same thing... 🙈
Yes, there is no magic amount of fuel. I have a strong suspicion a batch of bad bearings went in a lot of gen2 engines. That's why a lot of guys have the same issue and some don't.
So if you buy a bearing, buy another brand. I used a J&T bearing. I have two more Reds bearings from that time. Might aswell throw them away.
Nice🎉🎉🎉
Hell yeah. Found it🎉
4:47 what would have happened if you full triggered it without blipping u think?
It would die
@@kings-racing only that engine or you mean all?
By the way, nice pit caddy
Thank you. It's homemade.
Why do you blip your trottle so much, reds engines are a nightmare, like a woman very temperamental
Feeling clutch engagement and grip, but turned in to a bad habit and difficult to unlearn.. Interesting how a lot of guys love these engines and a lot of guys hate them.
I can't say much about the newer reds engines, I had a couple of the older one's, and they broke my heart