RC EVOLUTION - 遙控工房 - 香港RC遙控車討論區

標題: Run-in 期間引擎不停加快?(終極篇!!) [打印本頁]

作者: bigben 時間: 2007-7-10 11:17
標題: Run-in 期間引擎不停加快?(終極篇!!)
Inferno US Sports 引擎終於撻著了

, 但問題接二連三!!! 情如如下:

之前試咗十九幾次失敗(三天時間)

……. 終於….

1)
先把油門servo拉開至一半(冇開控), 其後引擎成功撻著(三十份一成功機會率

), 由於油門開至一半, 引擎高速轉動….. 於是乎我把油門servo set 返回中位置….. 引擎減速…. 但我見我轉速雖回落但偏高, 於是我把怠速螺絲 anticlockwise扭, 希望將怠速減慢…… 但好快又死火了 (可能扭得太多)
2)
其後中間試完又試, 引擎又撻著了(又是二十份一成功機會率

), 今次怠速ok, 聲音係”du du du du du”….. keep check 住温度由40->50-> 60…..80…. 轉速又開始加快!!!…….. 我confirm油門已關至minimum了, 但引擎繼續加快!! 温度直上100!! 輪子快速轉動!!! 因怕温度太高, cut 油!! (以上”撻著至cut 油”約維持1分鍾)
3)
其後中間試完又試, 引擎又撻著了(又是二十份一成功機會率

), 今次怠速ok, 聲音係”du du du du du”….. keep check 住温度由40->50-> 60…..80…. 轉速又開始加快!!!…….. 可怕的是油門servo卻被推開!! 引擎繼續加快!! 我把servo油門推至回中位置, 但servo又被推開!!! Terrible!!! 温度直上110!! 輪子快速轉動!!! 因怕温度太高, cut 油!! (以上”撻著至cut 油”約維持1分鍾)
4)
太累了!! 放棄!! (time : 0130 hours, 10 July 07)

大師兄, 中師兄們……. 有冇d嘜可以教吓我呀?? 我只想run-in引擎啫…. Why so difficult

???

1) Why引擎不停加快?? 而唔係keep住”du du du du du”咁轉

???
2) Need to open the 搖控 when break in ???
3) Any other suggestion??

pls help me..... I am exhausted.... (start to hate engine

!!!)

如果有run-in engine 賣就好啦……. 貴d都願…..

[ 本帖最後由 bigben 於 2007-7-19 10:16 編輯 ]

作者: Neko 時間: 2007-7-10 11:53
Run in係最痛苦既必經過程

唔好咁容易放棄啦! 我沉晚tune引擎都搞到 2:30am...

你油針未set好, 好似係細針開得太大所以idle唔倒. 不過記住支大針要平衡番, 唔好lean out得太勁.
而撻車開唔開遙控就個人喜好...我就一定開, 起碼有乜野事都控制倒部車.

我都係比小小經驗談, 你再睇下其他師兄既回覆先下結論啦

作者: sunnyshao007 時間: 2007-7-10 11:59
上次我幫我個friend run in 副gxr15 都係用左30mins ja ma~!
睇下你識唔識較~!(一lean你玩得唔駛玩,咁就會run得唔好)
最基本就係較到副機死死下但唔死得咁就啱啦~!
我run in engine 既技術都係人地教/自己領悟/自己思考~
玩車唔係要人地教你,
你都要付出架~!

作者: BHP 時間: 2007-7-10 12:05

原帖由 Neko 於 2007-7-10 11:53 發表

 登錄/註冊後可看大圖

你油針未set好, 好似係細針開得太大所以idle唔倒. 不過記住支大針要平衡番, 唔好lean out得太勁.
而撻車開唔開遙控就個 ...

佢既問題似係細油針開得太少﹐ 所以才會不斷加快 + 唔穩定。

細針只要開得夠多﹐
就算多 1 個兩個圈﹐ 轉數都唔會升﹐ 只會跌同比較"笠"。

我既 advice 係大細針都開大 D.
以 .28 engine 來說﹐
由大針 3.5, 細針 3, carburator gap 2mm 慢慢開始 tune 啦~

這個 setting 應該可以就o甘停o係度 break-in 又得﹐
慢跑又得。

作者: Oakfield 時間: 2007-7-10 12:07

原帖由 BHP 於 2007-7-10 12:05 發表

 登錄/註冊後可看大圖

佢既問題似係細油針開得太少﹐ 所以才會不斷加快 + 唔穩定。

細針只要開得夠多﹐
就算多 1 個兩個圈﹐ 轉數都唔會升﹐ 只會跌同比較"笠"。

我既 advice 係大細針都開大 D.
以 .28 engine 來說﹐
由大 ...

以 .28 engine 來說﹐
由大針 3.5, 細針 3, carburator gap 2mm 慢慢開始 tune 啦~

這個 setting 應該可以就o甘停o係度 break-in 又得﹐
慢跑又得。
咁1:10D偈 work 唔 work 呀

作者: BHP 時間: 2007-7-10 12:11

原帖由 Oakfield 於 2007-7-10 12:07 發表

 登錄/註冊後可看大圖

咁1:10D偈 work 唔 work 呀

我差不多 10 年冇玩 1:10 GP 了﹐ 現在都是玩 .21 以上的 engine. =)

.10 至 .15 以下的 engine,
我會以大針 2.5 圈, 細針 2 圈, 1.5mm 來作開始吧。
總之夠富油﹐ 但又未至於會浸死部 engine 來開始慢慢 tune

至少唔洗每分鐘從 tart 一次﹐
每次 tart 30 下先

----------------------

反而想整返部 mini engine 既 1/18 truck 來玩玩﹐
因為聽講呢 D 細 engine 仔難 tune 好多﹐
聽落幾有趣

原帖由 bigben 於 2007-7-10 11:17 發表

 登錄/註冊後可看大圖

pls help me..... I am exhausted.... (start to hate engine !!!)

By the way Ben,
you'll start to love engines when you have run-in and fine tuned your buggy.
It's an enjoyable process, and at the end quite satisfying =)

And the satisfaction comes from your anger and hatred in engines now haha~
The more hatred, the more satisfaction at the end =D
Pointing at the engine, swearing and yelling "I conquered you!"

[ 本帖最後由 BHP 於 2007-7-10 12:24 編輯 ]

作者: stanley_wwy 時間: 2007-7-10 12:25
標題: 回復 #1 bigben 的帖子
師兄....你跟番manual 個 initial setting 先啦.....

pump 一兩下油上engine先......start 果時應該會爆幾下.....跟住著架啦喎.....如果係著咗之後先自己熄火就係後話......橫針太"立"

睇你話idle 咁快又咁熱....似乎係棋針大lean....鬆番三個字半個鐘試下.....

作者: chrishkyung 時間: 2007-7-10 12:38
what plug u ar using now

作者: Neko 時間: 2007-7-10 12:38

原帖由 BHP 於 2007-7-10 12:05 發表

 登錄/註冊後可看大圖

佢既問題似係細油針開得太少﹐ 所以才會不斷加快 + 唔穩定。

細針只要開得夠多﹐
就算多 1 個兩個圈﹐ 轉數都唔會升﹐ 只會跌同比較"笠"。

Sor... 講錯野添

想問下通常較完支細針, 大針係唔係一定要郁?

作者: bigben 時間: 2007-7-10 12:42
thanks to all.....
actually, I read a lot from website b4 I start run-in.....
but every problem seems to be appeared b4 what I expected.....

my present setting:

大針 : 2.5 turns
小針 : manual not mention no. of turn, but only 與邊位距離...
cal gap : 0.5mm

[ 本帖最後由 bigben 於 2007-7-10 12:45 編輯 ]

作者: valklai 時間: 2007-7-10 12:46
Ben 兄,
想當年我花咗半年時間先至攪得掂副 nitro engine 呀(喺冇人教嘅情況下)
你依家如果想冇咁痛苦,最好約其他師兄一齊先至turn engine啦
佢地會教你點做架啦,因係文字上真係好難講比你聽嘅

作者: bigben 時間: 2007-7-10 12:46

原帖由 chrishkyung 於 2007-7-10 12:38 發表

 登錄/註冊後可看大圖

what plug u ar using now

i buy a eletric plug with battery inside (電"扌達"筆??).
（火咀係正常着的)

[ 本帖最後由 bigben 於 2007-7-10 12:48 編輯 ]

作者: BHP 時間: 2007-7-10 12:49

原帖由 bigben 於 2007-7-10 12:42 發表

 登錄/註冊後可看大圖

大針 : 2.5 turns
小針 : manual not mention no. of turn, but only 與邊位距離...
cal gap : 0.5mm

As expected,
the high needle is way too lean, especially during break-in period.
Low needle, if the manual only refers to 與邊位距離, the factory setting should be flush (與邊位對齊/平排)
Cal gap : 0.5mm!!! How to keep the engine running at idle? 不會死火嗎﹖ =D

試試這個吧﹐ 感覺應該會好很多﹕
大針 : 3.5 turns
小針 : Flush
Cal gap : 1.5 to 2mm

唔洗怕個 gap 2mm 好似好多o甘﹐
因為細針既 flush setting 應該好 rich, 所以 cal gap 要高返 D 等佢唔好死火。
Break-in 完可以慢慢將細針調 lean, cal gap 調細。 =)

原帖由 Neko 於 2007-7-10 12:38 發表

 登錄/註冊後可看大圖

想問下通常較完支細針, 大針係唔係一定要郁?

郁細針﹐ 影響唔到大針。
郁大針﹐ 會影響到細針 setting.
所以通常 set 好大針才 set 細針。

然後﹐ 又要 set 返好個 idle.
點知過幾日濕度溫度變左﹐
大針又要調過﹐ 之後又要搞細針。
之後發覺又要較返個 idle.

玩油車就係有呢樣樂趣啦﹗
網上既 guideline 只係俾個 idea 你﹐
之後全都是看自己的領悟能力了。
慢慢 tune 吧

我以前 30 分鐘都 tune 唔好副偈﹐
而家 2 分鐘搞惦跑得﹐ 玩 1 個鐘都唔 overheat 唔死火

玩多 D 自然唔洗諗﹐ 靠本能去 tune 就可以了~

[ 本帖最後由 BHP 於 2007-7-10 12:55 編輯 ]

作者: bigben 時間: 2007-7-10 12:57
thanks to all big brothers!!

感動...... 我會tune好呢副 "偈"!!

作者: stanley_wwy 時間: 2007-7-10 13:57
標題: 回復 #13 BHP 的帖子
如果係gxr15....三圏半好似太"立", 我都試過....一俾油"琴"熄.....

兩圏半倒著咗車......俾幾下空油等engine熱少少......再鬆番三個字放落地行.....行順咗就唔會咁易死架啦......記住唔好俾太大油呀.....副engine run一輪先好行快車......

記住著咗engine之後.....keep住一下一下咁俾少少空油.....keep住engine熱.....直到放落地行, 就唔會咁易熄火架啦....

之後著倒車, 有多d信心啦.....就慢慢再試下鬆多dd大針, 總之"立"d 唔緊要.....放落地慢慢行....慢慢run-in 副engine.......

行五六缸油後....dd dd 咁慢慢收大針......咁你就會見副engine d performance 慢慢咁 improve......

放心....原廠engine唔會易玩死o既.....放心tune.

俾d耐性....人人都經過呢個stage 架......30mins 溫偈........可能天生車手啫.....

[ 本帖最後由 stanley_wwy 於 2007-7-10 14:02 編輯 ]

作者: leeho888 時間: 2007-7-10 14:17
我run in engine ,只係慢慢將細針調,冇郁大針,run左10缸油就玩,我都係唔識.
要平衡大細針,慢慢 tune........但好快又死火,run in期間引擎不停加快,通常係太富油

[ 本帖最後由 leeho888 於 2007-7-10 14:28 編輯 ]

作者: bigben 時間: 2007-7-10 14:48

原帖由 leeho888 於 2007-7-10 14:17 發表

 登錄/註冊後可看大圖

但好快又死火,run in期間引擎不停加快,通常係太富油

太富油所以不停加快?
之前另一些師兄又話要扭大大油針, 要富油.....

too rich or to lean????

too confused !!!

I think the situation now is that the fuel supply is too lean, right? so that I need to turn anti-clockwise the big and small needle to make the supply rich, right??

leeho888 , is your concept different to ours???
for discussion only, no offence.

作者: BHP 時間: 2007-7-10 14:54
It's nice to try different things and see their effects

作者: bigben 時間: 2007-7-10 16:25
BHP, are u joking....?? I have no time to try.... I want an effective and correct mean.....

(kidding)

作者: BHP 時間: 2007-7-10 16:34
You had time to try until 0130 la

Let me know when you wanna try again next time,
I shall come and video tape the fun and the pullstarting

It's like taking a shower,
everyone does it in a different way.
If you want an effective and a "mean" way,
go with the factory settings, can't go wrong

Just praying that it's not an air leak that's causing a lean mixture.
We don't want sand going into the engine especially during break-in

作者: bigben 時間: 2007-7-10 17:55
Tonight..... 終極一戰

Engine vs Ben

live free or die hard !!!

作者: leeho888 時間: 2007-7-10 20:17

原帖由 bigben 於 2007-7-10 14:48 發表

 登錄/註冊後可看大圖

太富油所以不停加快?
之前另一些師兄又話要扭大大油針, 要富油.....

too rich or to lean????

too confused !!!

I think the situation now is that the fuel supply is too lean, right? so ...

接收電冇電... 所以不停加快~~~~~

作者: bigben 時間: 2007-7-11 02:36
接收電冇電... 所以不停加快~~~~~???

i did not turn on the control and the car........

should not be related.....

作者: BHP 時間: 2007-7-11 10:38

原帖由 bigben 於 2007-7-11 02:36 發表

 登錄/註冊後可看大圖

接收電冇電... 所以不停加快~~~~~???

i did not turn on the control and the car........ should not be related.....

Hey you're back!
How was the battle?

作者: bigben 時間: 2007-7-12 10:30
首先, 謝謝brother們的教導……

昨晚2nd round 對決由1200-0130 hours…… 結果……

1)
大小油針已鬆多了, 但引擎一著都係”嘭嘭聲” 咁去….(今次撻車成功率有3-5分1, 有進步…..

)
2)
後來我跟說明書上寫將”怠速螺絲”扭鬆, 將化油器那gap位減少, 目的怠速減慢……結果……係成功的!!! But…….
3)
但到了兩份鐘後, heat sink 的溫度也升至90多度(may rise continuously), 並不是別人說的6-70度…!!! 而引擎聲由”du du du” 轉至高頻一點, 好像好急、好尖的……. 最終我怕燒壞引擎, cut 油!!(以上重試2,3次都是一樣)

就此, 我有d問題問問…..
1)
何解有以上情況?
2)
Run in及調教GXR28 引擎是否和一般引擎不同? 因說明書上寫明run in期間將”怠速螺絲”扭鬆去調怠速…..大小油針已鬆多好多了 (大油針 - 4-5 turns off!!)
3)
何解溫度不停上升?? 說明書上寫run in期間可以去到上限120C, ok嗎??
4)
有冇玩過inferno嘅師兄在呀?? leeho888師兄在嗎?

希望大家再幫幫小弟…..

作者: valklai 時間: 2007-7-12 11:23

原帖由 bigben 於 2007-7-12 10:30 發表

 登錄/註冊後可看大圖

首先, 謝謝brother們的教導……

昨晚2nd round 對決由1200-0130 hours…… 結果……

1)
大小油針已鬆多了, 但引擎一著都係”嘭嘭聲” 咁去….(今次撻車成功率有3-5分1, 有進步…..:victor ...

你呢個情況應該先張細油針再放多D(喺著緊engine時)
試試睇吓點啦...............現埸情況千變萬化,依家真系好難講得曬比你聽架

作者: bigben 時間: 2007-7-12 11:43
看來真的要"出field"去揾d師兄攪攪........

Sunday TKO 有人在嗎???
佢地會否覺得我好煩?? 3唔識7阻住晒

[ 本帖最後由 bigben 於 2007-7-12 11:45 編輯 ]

作者: valklai 時間: 2007-7-12 11:57

原帖由 bigben 於 2007-7-12 11:43 發表

 登錄/註冊後可看大圖

看來真的要"出field"去揾d師兄攪攪........
Sunday TKO 有人在嗎???
佢地會否覺得我好煩?? 3唔識7阻住晒

都話唔會囉

所有玩車嘅師兄們or大部份,只要你叫人一聲師兄個個都幫手架啦
Sunday+Sunny day+afternoon 一定有人

作者: bigben 時間: 2007-7-12 12:14

原帖由 valklai 於 2007-7-12 11:57 發表

 登錄/註冊後可看大圖

都話唔會囉

師兄師兄...... don't be angry....

any other advice from other c hing of my situation as mentioned above???

作者: ttyy 時間: 2007-7-12 13:48
1) it is all about fuel and air mixture.

this is control by the throttle opening (air) and the top and bottom screw (overall flow of fuel to engine)

The temperature rise as there are combustion inside the engine and it creates 1) power and 2) heat. More cycles of combustion = more more heat heat.....

when the engine temperature is rising, richen the air fuel mixture by adjusting the top screw for supplying more fuel to the engine, providing all other adjustments remain the same. try 1/8 or even 1/4 a turn every time and listen to the tone of the engine. It shd sound slower and slower...temperature shd decrease accordingly.

Nitro is act as the cooling agent for the engine for RC cars....as it doesn't have a radiator like a standard 1:1 car. Also, it act as an lubricant for the internals of the engine. More fuel = lower engine temp if other adjustments remain constant. However, too much fuel = engine stop running as it is too cold so you have to adjust accordingly.

hope it helps...

作者: bigben 時間: 2007-7-12 17:41
I am using torando 25%, will it be too high for break-in and come to this situation??
(I know 16% is best for run-in, but people said that 25% is also ok......)

作者: bigben 時間: 2007-7-19 10:22
big bros,

I did it welll successfully last night !! the engine run-in at a stable temp. about 100C !!! now, just finish 3 tanks of fuel........ spend 30 mins per tank

got back home late at 0230 last night.....

I am so happy that I can "control" my engine now.... thanks to the advice and assistane from every big bros.....!!!

I think I need to run-in for another 3 tanks b4 I can tune my car.... right??

作者: chrishkyung 時間: 2007-7-19 16:50
thats enough for those stock engine....no more run-in is required....

Just to play it...dont waste the time...measure the temp to tune the engine

enjoy the nitro RC

作者: BHP 時間: 2007-7-20 00:52
I agree. Go and bash around with the stock engine.
When it's finally having problems,
you have all the excuses in the world to get a new engine

作者: chrishkyung 時間: 2007-7-20 08:14

bash bash bash

作者: bigben 時間: 2007-7-20 15:52
go go go.....!!!

歡迎光臨 RC EVOLUTION - 遙控工房 - 香港RC遙控車討論區 (https://www.rc-evo.com/xbbs/)