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低重心Subaru調高roll centre分享

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1#
billy86che 發表於 2008-2-12 00:14:03 | 顯示全部樓層 回帖獎勵 |倒序瀏覽 |閱讀模式
2#
 樓主| billy86che 發表於 2008-2-12 11:42:47 | 顯示全部樓層
3#
 樓主| billy86che 發表於 2008-2-12 17:59:44 | 顯示全部樓層
原帖由 ckwu 於 2008-2-12 17:00 發表


left and right camber/caster/toe angle is uneven, cornering ability will be unbalance


They are all adjustable, like a 1/10 touring car.

[ 本帖最後由 billy86che 於 2008-2-12 18:01 編輯 ]
4#
 樓主| billy86che 發表於 2008-2-13 00:19:36 | 顯示全部樓層
Here is how I can adjust the camber and the roll centre. I'm sorry that Caster is fixed (zero).
5#
 樓主| billy86che 發表於 2008-2-13 12:08:39 | 顯示全部樓層
原帖由 ckwu 於 2008-2-13 05:04 發表
adjustment not equal to correct geormetry
flexibility to adjustment cannot beat precision engineering
but good concept and innovation.  I really respect your creativity and craftsmanship on this pr ...



There was a time you mentioned "off" and then you said "uneven" & "unbalance' and now you speak of "correct geometry". It is difficult to find your focus. In fact, the adjustment of the location of roll centre is to work with different tracks and the original roll centre was wrong due to the simple design of the bearing knuckle. You should have learnt that with your claimed experience in real car mechanics.

You said, "left and right camber/caster/toe angle is uneven". How do you know that if you haven't done any measurement first? (雖然我知道唔係為100%一樣,但係我用尺度過都好準,原裝啲膠都'口脾'得唔準啦.)

[ 本帖最後由 billy86che 於 2008-2-13 13:03 編輯 ]
6#
 樓主| billy86che 發表於 2008-2-13 13:45:39 | 顯示全部樓層
原帖由 scalpel 於 2008-2-13 13:20 發表
Excellent DIY! And you are using Li battery?


Yes, it's lipo.
7#
 樓主| billy86che 發表於 2008-2-13 14:05:29 | 顯示全部樓層
原帖由 scalpel 於 2008-2-13 13:54 發表


How long the Lipo battery last? I mean the play time...


They are about 700mah, 7.4V so with an appropriately tuned motor of 50 turns, I run it for about 13 minutes with the speed of other cars using a 3?T motor. I won't allow the battery to run flat.
8#
 樓主| billy86che 發表於 2008-2-13 18:57:30 | 顯示全部樓層
原帖由 ckwu 於 2008-2-13 18:04 發表
Cars engineer use a lot of time to design and calculate the geometry on how long/short and where to put the control arm(like the bigger car:1/10RC) and where the pivot point is.  It is to evenly share the load(weight) and weight transfer of the car.  If a new car come out not going stright with no hand steering or tire with abnormal wear after 2-3 month, we call it defect and we have to fix it with precision measurement tools that measure down to 0.01 degree(for all camber/caster/toe).


This is a mini-z and the tyres wear every pack of battery. The clearance between the bulkheads and the knuckles of the wheels is more than 1 degree even when the mini-z is brand new, not to mention 0.01. If you really knew a lot about the AWD, you wouldn't have asked in the forum about how to set up a MR015 and an Enzo MR02 somewhere in this forum.

This car is 2 years old and I have been running it at both CT and MMS. I started with the MR01 when it first came to the market and have not stopped playing with the 1/28 till now.

I do whatever I can to make it run faster on tracks, not to make sure that it runs 100% straight nor to seek for the endurance, safety and driving leisure that real cars have to offer.

[ 本帖最後由 billy86che 於 2008-2-13 19:18 編輯 ]
9#
 樓主| billy86che 發表於 2008-2-14 15:30:12 | 顯示全部樓層
原帖由 ckwu 於 2008-2-14 07:54 發表

I am not going to waist time with you, go out and find a book that talk about real car suspension setup like in option or cars and driver and you will know what I am talking about. My brother always ...


This is a mini-Z forum. I guess there should be many real car forums to post your reply.
You wrote," but the idea on suspension setting/weight distribution/weight transfer/tire choice is the same doesn't matter 1:1 or 1:100."
but I guess scale matters a lot because the proportional speed at corners of the mini-Z is even faster than that of an F1.

Thanks for reminding me to read. I have a habit of reading and I think I'll never stop it until I die. If you really had read enough, you wouldn't have typed "waist" for "waste", "talk about" for "talks about" ...and so on. Perhaps you are the one to read more.

[ 本帖最後由 billy86che 於 2008-2-14 15:41 編輯 ]
10#
 樓主| billy86che 發表於 2008-2-15 12:48:58 | 顯示全部樓層
原帖由 ckwu 於 2008-2-15 07:54 發表


It is not necessary to have left tire and right tire to worn evenly, but will the to even the inner tire wear and outter tire wear.  In racing, they will put free weight closer to front, rear, lef ...


What a mess.
This is not "typo". I'd rather use the term "incomprehensible" (both for the Chinese and native English speakers). I'm happy to chat here but you still have to use a language that people understand.

[ 本帖最後由 billy86che 於 2008-2-15 13:28 編輯 ]
11#
 樓主| billy86che 發表於 2008-2-16 00:11:56 | 顯示全部樓層
原帖由 1999 於 2008-2-15 23:12 發表

唉.......it後面個verb ge s無哂,講到好似中文咁=]


Which "it" do you mean? Did you mix up the two people talking here?

Sometimes we don't add 's' to the verb because it is an 'infinitive'. Such as we say,

"I wish to make it run faster."   instead of    "I wish to make it runs faster."

because after words like "make" "let" or "see", we should use a "bare infinitive" instead of another verb. You should have learnt all these in form 2 if you studied in Hong Kong.

[ 本帖最後由 billy86che 於 2008-2-16 00:38 編輯 ]
12#
 樓主| billy86che 發表於 2008-2-16 01:55:02 | 顯示全部樓層
原帖由 shouldbe 於 2008-2-16 01:51 發表
冇品在於你唔得光明正大用自己acc發言,而且不是串錯字,是打錯字居多喎,
anyway,我可能年紀太細乜都唔識,今年只得33歲,芵文又唔識,但我識咩叫"光明正大"囉.
你估你係"奇拿"咩,"你找不到我的"


算數啦,其實玩吓無妨.
13#
 樓主| billy86che 發表於 2008-2-16 02:02:02 | 顯示全部樓層
原帖由 腦屍反手呔 於 2008-2-16 01:57 發表

係呀俾人攻擎得happy 唔 happy ? 你攻人就要預番比人攻嫁啦.


"俾人攻擊" is not the same as "俾人人身攻擊".
I guess we are all wasting time here. Let's sleep.

[ 本帖最後由 billy86che 於 2008-2-16 02:04 編輯 ]
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