Why the need to do a new break in.

Why the need to do a new break in.
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Why the need to do a new break in. - 10/19/2006 9:53:18 AM

bikeracer

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Why is it that I frequently see people posting that if you change the nitro percentage,you need to do another break in session ?

It doesn't make any sense to me why this is required,maybe someone can give a logical explanation and any facts behind this often quoted statement.

Allan

< Message edited by bikeracer -- 10/19/2006 9:54:19 AM >

Post #: 1

RE: Why the need to do a new break in. - 10/19/2006 11:53:42 AM

downunder

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quote:

ORIGINAL: bikeracer
why this is required

It's required because someone somewhere read about it and told someone else who passed it on to someone ese who....

Seriously though, it's not necessary or needed but comes from the mistaken idea that adding nitro makes the engine run hotter (or cooler, depending on who you talk to or what you're reading) and that'll change the liner taper and the pinch and destroy the engine in microseconds. What does need to be done when changing nitro % (and even oils) is a retune to suit the new fuel.

There's a lot of myths and misinformation around

(in reply to bikeracer)

Post #: 2

RE: Why the need to do a new break in. - 10/19/2006 1:00:31 PM

bikeracer

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quote:

ORIGINAL: downunder

It's required because someone somewhere read about it and told someone else who passed it on to someone ese who....

There's a lot of myths and misinformation around

I think those two statements sum it up in a nutshell.There's probably people who still think the earth's flat as well.

Allan

(in reply to downunder)

Post #: 3

RE: Why the need to do a new break in. - 10/19/2006 3:06:44 PM

SManMTB

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quote:

ORIGINAL: bikeracer

Why is it that I frequently see people posting that if you change the nitro percentage,you need to do another break in session ?

It doesn't make any sense to me why this is required,maybe someone can give a logical explanation and any facts behind this often quoted statement.

Allan

There is absolutely no need to break ity in again. Actually you CAN'T break it in again.
Just adjust the needles and go.

I'm also tired of seeing false advice like this being spread.

(in reply to bikeracer)

Post #: 4

RE: Why the need to do a new break in. - 10/19/2006 3:07:58 PM

SManMTB

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quote:

ORIGINAL: bikeracer

quote:

ORIGINAL: downunder

It's required because someone somewhere read about it and told someone else who passed it on to someone ese who....

There's a lot of myths and misinformation around

I think those two statements sum it up in a nutshell.There's probably people who still think the earth's flat as well.

Allan

Actually there are people who still think the earth is flat. Just google......... truly scary.

(in reply to bikeracer)

Post #: 5

RE: Why the need to do a new break in. - 10/19/2006 3:35:05 PM

hpi apollo

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well, i have heard at least do one tank, hear me out, the reason more nitro needs a "berak in" again is beacuse of hysterisis, higher internal pressures from higher nitro percentages cause stress until the parts are use to it.......but thats is just what i have heard

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RE: Why the need to do a new break in. - 10/19/2006 4:19:44 PM

SManMTB

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quote:

ORIGINAL: hpi apollo

well, i have heard at least do one tank, hear me out, the reason more nitro needs a "berak in" again is beacuse of hysterisis, higher internal pressures from higher nitro percentages cause stress until the parts are use to it.......but thats is just what i have heard

Sorry, but that's BS. "Hysteresis'.... no. I bet the guy who said that doesn't even know what that means.

Start it and retune, that's it. For higher nitro you will likely have to richen it just a bit. Enjoy.

(in reply to hpi apollo)

Post #: 7

RE: Why the need to do a new break in. - 10/19/2006 4:50:28 PM

dISCOdAN

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what's funny is you will actually see this recommendation is some instruction books

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RE: Why the need to do a new break in. - 10/19/2006 6:29:43 PM

hpi apollo

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actually it came from a very knowledgable (sp?) person from another forum that has been into rc for over 20 years and has over 11,000 posts, whenever i switched nitro i always ran the first tank easy, its hard to tune when you are driving hard anyhow

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RE: Why the need to do a new break in. - 10/19/2006 6:31:09 PM

SManMTB

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I've been in RC since '89 and I have 2531 posts.

Yup, I'm being sarcastic.

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Post #: 10

RE: Why the need to do a new break in. - 10/19/2006 7:05:15 PM

125cchyperman

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quote:

ORIGINAL: hpi apollo

been into rc for over 20 years and has over 11,000 posts,

Just because you have over 11,000 post doesnt mean you know what your doing. There's a certain person on this site that has over a thousand post's and he cant even tune his enigne. The number of post the guy has does not signify how smart the guy is.

Saying that sometimes you have to add a shime which takes away some of the compression but thats about it along with retune the engine. Once you break in an engine it will not break in again as the break in is a controlled wear in of the engine internal parts. Basically I think a person who doesnt know what they are trully doing stated that and people have then picked that up along the way. And then stated that as a sort of fact, when it's nothing but a myth.

You dont gain an extre brain cell everytime you post, so that doesnt mean that he is any more knowledgable then any of us. Any of us could have that amount of post's we would have just had to goin or find this site earlier then we did.

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RE: Why the need to do a new break in. - 10/19/2006 7:41:43 PM

hpi apollo

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just saying....i knew i would get flamed for that

i know a break in isnt really needed, the guy that has 11,000 posts is not an idiot, he has owned just about every rc there is, he is very helpful with them too, and if you are going to 30% from 20% then you should add a head shim to lower compression

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RE: Why the need to do a new break in. - 10/19/2006 7:46:57 PM

SManMTB

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quote:

ORIGINAL: hpi apollo

just saying....i knew i would get flamed for that

i know a break in isnt really needed, the guy that has 11,000 posts is not an idiot, he has owned just about every rc there is, he is very helpful with them too, and if you are going to 30% from 20% then you should add a head shim to lower compression

No, that's also not a rule.

(Don't take it personally)

(in reply to hpi apollo)

Post #: 13

RE: Why the need to do a new break in. - 10/19/2006 8:16:57 PM

hpi apollo

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sorry, i meant 20% to 30%

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RE: Why the need to do a new break in. - 10/19/2006 8:39:13 PM

SManMTB

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quote:

ORIGINAL: hpi apollo

sorry, i meant 20% to 30%

Either way, still not a rule.

(in reply to hpi apollo)

Post #: 15

RE: Why the need to do a new break in. - 10/19/2006 9:14:20 PM

hpi apollo

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i wasnt saying it was a rule, i said you "