Personally I replaces the bearings if there is any play back and forth on my race engine. A little more large on the practise engine. Do all of you allows a little play back and forth?

Monty, does this go for the rear bearing as well?

I replaced the rear bearing in my Bonito and the ceramic Nova bearing had a catch in it, so I took it apart to inspect and found an odd mark on the inner race.

It looks like the defect came from the factory, kind of like a bad cast.

I will see if I can take a pic that shows what I am talking about, otherwise I may just mail it to you and let you check it out.


On another note, I received my engine yesterday. Will hopefully get a chance to run it Thursday. Appreciate the service!

[IMG]http://i1061.photobucket.com/albums/...010_084114.jpg[/IMG]

+1 Wheelie

You always have to take into account the source of the information. Info from a novice does not carry as much weight and validity as that from someone with more experience.

Experience is no guarantee of good advice..

Its possible that the material used to machine the races had a void of sorts

I would say that is a manufacturers Defect but its not so easy to convince those in charge of replacing the parts due to defects . Whats the code on the outer race ?

Although much more apt to be true, solid advice when being given by a nitro veteran as opposed to a nitro newb , same holds true for any subject

I assume this is the code you are referring to

I inspected all of the balls and they appear to be good. I'm not too concerned with them replacing it, I just wanted to let someone know of the issue.

If you oil the bearing it is hard to feel the catch but when you spray it with motor spray it is very apparent.

[IMG]http://i1061.photobucket.com/albums/...010_090637.jpg[/IMG]

An Fyi for general info. Have a n21bf, which we all know is a mild mannered budget engine. For the price it runs ago and is built to Nova quality of materials, but...it is what it is....
Got a P5XL from a member who had a piston pin let loose and buggered the sleeve and piston, but the ceramic bearings, crank and rod etc were in great shape shape. Long story shorter. The sleeve and piston from the n21 slip in beautifully and the crank of the P5, which is a major step up from the stock n21 in design fits perfectly. This little "I think I can" engine got a major new lease on life, feels like a 50% power increase,lol
My point is, know someone with a n21 thats unloading it for a song cause it doesnt have the guts? Have a better engine thats just worn out? I found you a new lease on life!

And yes, I would fall into the category closer to nitro newb than seasoned vet, so take it for what its worth.......

Hey Chopper, take a chill pill. Wheelie means well as he's one of the veteran guys in our area, not to mention one of the fastest. I too believe that you give more advice on the forums than necessary, especially given your experience, or the lack thereof.

I know for myself that you're a noob, and thats okay because we've all been there. I'm also sure that your attempt to help is appreciated as well. However, its hard to say whats good or bad about anything is this hobby without sufficient experience; something you don't have yet. I don't even believe you've ever yet run the full life of an engine at this point. Which makes it difficult to share accurate advice. Knowing things because you read about it in theory don't make you a pro, or someone who knows what he's talking about. Get your gear running right first before becoming an internet pro. I've offered my help and assistance to you many times with your gear; that still stands.

Understandable, my Nova is my first good engine and yeah, you're right I haven't run the full life out of an engine like it yet. I've had two engines before I started racing that I ran till they wore completely, I got 8 gallons on my last engine and I decided I wanted to race and bought my Nova.

But, I've learned a lot about tuning, rc cars in general, and engines. I'm a much better engine tuner than I was during my first and second race, of course I'm not an expert, nor do I consider myself one, but I'm good at diagnosing some tuning issues because I've had issues my self, and I share my experience about what I've done that fixed the problem. All the advice I give, or most of it, is based off of my experience. For example, the bearings. I had a leaky front bearing on my P5 after about 2 gallons. I bought a TKO bearing and its perfect. Now after 3 more gallons, that TKO bearing is still tight.

I don't give advice or suggestions on things I don't know, or am not sure about though. Maybe there is a problem someone is having and I never had that problem, but I might have an idea what the problem might be so I say what it might be. Just like if I have a question about something, other people help me because they might have an idea what the problem is but not necessarily have experienced the problem first hand.

I agree, I'm not nearly as experienced as you or wheelie but it doesn't mean I can't try to help in any way I can. If I were having a problem, I would want anyone who has and idea what it might be to tell me and maybe its the solution.

Yep
 

Very well said sir.

don't worry bout these guys giving you a hard time or making jokes. some just look for a chance to put others down. keep your head up and keep on enjoying the hobby and never be afraid to give your opinion on rc. Who knows you may have some great idea come up that others will learn from experienced or not.

x2..

Thanks.... yeah, not all novices don't know what they're doing, I try and help other people with their problems, sometimes I'm wrong, sometimes I'm right, but its worth it for me to give my opinion and maybe its the solution....

hi.

i am new to this hobby and have a problem with my nova.
Does anyone have a link to a friendly forum so i can get some help?:nod::nod::weird:

I am not a pro and therfor i have been thrue a lot of problems/issues in the early start of this hobby.So therfor i did learn wery quick about most of the problems most of us go thrue in early stage of this hobby.

I have 4 years of experience or around 140liter and 5 different engines.
I dont race in competition but i do drive a lot.

What makes a pro? Do yo need to race a lot of competition or is it only enough with experience on driving.

What i feel is that you dont need to be a pro driver to be a pro on the theoretic side of this hobby.
I am helping a lot of people with different problems with theyre cars/engine and setup.Some of them have been in this hobby longer than me and drives a lot better than me.
But when it comes to understanding the hobby i feel more pro than many others.

Then again the information that are given us in some of the threads are not enough and seldom totaly corect.So sometimes we need to guess to get more innfo.
It is easy to missunderstand.But i think everyone who answer to a quastion only want to help.

It is ok to dissagree with a person but to tell him to be quiet becouse he is a newbe is just bad.

We are al here to help or ask,thats why we have a forum.To change innfo.

Be nice to each other:)

Oh really? How's that engine you grenaded today?