RC EVOLUTION - 遙控工房 - 香港RC遙控車討論區

標題: DIY-Awd 改(己加bumper) [打印本頁]

作者: deadmatch 時間: 2007-12-9 17:58
標題: DIY-Awd 改(己加bumper)
得到老師和各網友的意見後,
改進中的awd
還欠2樓板，later post 重心低d的那部.

[ 本帖最後由 deadmatch 於 2007-12-20 22:30 編輯 ]

作者: 阿門 時間: 2007-12-9 18:03
好正!!!!......但.點解影到咁既

作者: deadmatch 時間: 2007-12-9 18:12
工房上傳的限制要下降相片的質素...之前每一張都是3m到....點上傳....

作者: sfdo 時間: 2007-12-9 18:32
嘩，條中軸咁粗o既，想知係唔係中軸差速？

作者: abcdefg 時間: 2007-12-9 18:39
咁個摩打ma好高囉!?

作者: 觀星是答案 時間: 2007-12-9 18:42

原帖由 deadmatch 於 2007-12-9 18:12 發表

 登錄/註冊後可看大圖

工房上傳的限制要下降相片的質素...之前每一張都是3m到....點上傳....

其實你只要用小畫家 set 99% 大小之後再 save, 張相 o既 file size 已經細 2/3 ......
何必 set 24 colors o甘核突呢 ....

作者: deadmatch 時間: 2007-12-9 18:46
謝謝觀星，下次試試先,
個犘打係高點,但我相信細車的重量在於電.
如果摩打不放高,那重心分佈便很難平衡了.
回sfdo, 那是中軸差速來的
這部awd有3個差速系統.

作者: Colin 時間: 2007-12-9 20:10
個魔打座係02 到cut 出黎 ge?
我都有諗過部車咁整,但唔知點實行

作者: billy86che 時間: 2007-12-9 20:35
Still not OK.

If you go on with adding remote and motor, you will just be wasting time. Trust me, it won't even beat an MR02.

Afterall, the idea is good. Do it all over again.

[ 本帖最後由 billy86che 於 2007-12-9 20:41 編輯 ]

作者: deadmatch 時間: 2007-12-9 20:38
老師教教我
告訢我吧.
我will try my best

作者: deadmatch 時間: 2007-12-9 20:41
針對老師上次提出的問題.
我己做了以下的改善.
1.中軸修正
2. 會做2樓板,也相信一定不會是彎的.
3. 車架是用"千"維板做的,剛度應該可以了.

希望老師continue 去提出問題,我會再改

作者: billy86che 時間: 2007-12-9 20:43

原帖由 deadmatch 於 2007-12-9 20:38 發表

 登錄/註冊後可看大圖

老師教教我
告訢我吧.
我will try my best

Answer me: how heavy is a 130 motor?

作者: deadmatch 時間: 2007-12-9 20:46
但是要是要做平衡, 電池便要放在2旁.如果摩打放在左or 右，會令車架不平衡．．
第２，　我想用２顆鋰電所以不夠位．
老師有咩好提議？

作者: billy86che 時間: 2007-12-9 20:54

原帖由 deadmatch 於 2007-12-9 20:46 發表

 登錄/註冊後可看大圖

但是要是要做平衡, 電池便要放在2旁.如果摩打放在左or 右，會令車架不平衡．．
第２，　我想用２顆鋰電所以不夠位．
老師有咩好提議？

You have not planned well for the battery and the servo. All you did was adding a centre differential to a "AWD" without making room for the rest, ie the motor, servo and the battery.

All I know is, as someone has suggested, the CG will be too high and the motor must be placed near the floor. Looking for the right cells will be your first step now. Stop all other work first.

作者: deadmatch 時間: 2007-12-9 21:01
i have planned the servo , but still i can't a good battery.
can you suggest some kinds for me?
by the way, i have take some picture for your reference.
this is the battery and the height of the motor.

作者: billy86che 時間: 2007-12-9 21:08
1. C123 battery is never a good choice (Ultrafire?). They are too big and the the factories are usually exaggerating the capacity (mah).
2. You have difficulty adding the servo and the PCB.

作者: deadmatch 時間: 2007-12-9 21:11
1.but they can provide high current and long time to use.
do you have some kinds of battery that suggest me to use?
i am really a stupid about the battery.
2. i have managed the room for adding the servo and the pcb. so don't worry about it.
3. i want to ask ...a silly question. if the 2 battery weight added together is bigger than the motor, then the cg is still keep at the lower bottom of the car. is it?

作者: billy86che 時間: 2007-12-9 21:12
Other than standard aaa cells, I am only using lipo on two of my AWD DIYs. The code is US463048 V3T. I got it directly from a firm in HK at $10 @.

463048 means 4.6mm x 30mm x 48mm.

作者: deadmatch 時間: 2007-12-9 21:14
so cheap?(is it like the cell phone's cell?)
how about the charger?(can i use the standard charger for 1/10 to charge it?)
and how long can it be used?
what is the voltage.
if it is good, i want to get two too. do you have more?

作者: billy86che 時間: 2007-12-9 21:17
You wrote:
2. i have managed the room for adding the servo and the pcb. so don't worry about it.
3. i want to ask ...a silly question. if the 2 battery weight added together is bigger than the motor, then the cg is still keep at the lower bottom of the car. is it?

2. But the PCB will add to the tall CG (I can understand there must be ways to make the car steer.)
3. Your motor will be at the top of the body shell. Let me tell you it weighs about 19 grams. Try adding 19grams at the top of the body shell of a normal AWD. See how it runs.

[ 本帖最後由 billy86che 於 2007-12-9 21:22 編輯 ]

作者: billy86che 時間: 2007-12-9 21:20
Lipo goes with a balanced charger. Learn enough please to handle them because it is potentially hazardous.
Search the net using the code I gave you and you will find a factory in Lei Yue Mun. See if the factory has leftovers.

作者: deadmatch 時間: 2007-12-9 21:21
thx, 老師.
it is quite a joke that i even not have any awd.
but for the calculating, the cg at the front part will let the car easily for drifting. is it?
can you pm me for the address where to get the cells.
i really want to buy it.

作者: billy86che 時間: 2007-12-9 21:24
1. If it is for drifting, what's the point of adding the 3rd differential?

2. Search the net please using the code.

作者: deadmatch 時間: 2007-12-9 21:28
1. i want to know about the theory for drifting. is it the speed of the front wheel gives bigger force so that a car can be more easily to drift. if it is , then the use of the 3rd differential is to give the front wheel have bigger force.

2. i have searched... it just show me factory in china....no one in hongkong.....
should i search in google or yahoo?

作者: billy86che 時間: 2007-12-9 21:45

原帖由 deadmatch 於 2007-12-9 21:28 發表

 登錄/註冊後可看大圖

1. i want to know about the theory for drifting. is it the speed of the front wheel gives bigger force so that a car can be more easily to drift. if it is , then the use of the 3rd differential is to ...

1. Wrong concept. Mid-differential is used because front wheels rotate more than the rear wheels when the car turns. Search the net and learn more.
2. Yahoo. Result 2. (Read carefully & be more independent!)
中国香港香港香港九龍油塘高輝道13號寶城工業大廈一樓全層

[ 本帖最後由 billy86che 於 2007-12-9 21:48 編輯 ]

作者: deadmatch 時間: 2007-12-9 21:52
thx.
i will read more.
can you suggest some website for me?

作者: billy86che 時間: 2007-12-9 21:56

原帖由 deadmatch 於 2007-12-9 21:52 發表

 登錄/註冊後可看大圖

thx.
i will read more.
can you suggest some website for me?

http://auto.howstuffworks.com/differential1.htm

作者: tiger1 時間: 2007-12-10 07:32
3個差速系統.modification, the true spirit of RC 4wd!

作者: deadmatch 時間: 2007-12-10 16:41
i have read about it.
i have a few points about cg.
as the calculation in applied maths, even if i put the motor like this, the cg will just rise for about 2-3MM,(this is due to the point that i will add steer bar at the bumper for easily drfiting)
i want to ask, if 2-3mm will not affect the car performance so much, should i continue to do it like that to have a bigger room for the servo, pcb and the battery?
p.s. i will use the standard electronic stuffs in 1/10rc in this car.

作者: Evo5 時間: 2007-12-10 16:54
I think u are making this tooooooo complicated.........

use 1/10 electronic ??
what scale is this car ?? Likw ABC 1/24 ??

作者: deadmatch 時間: 2007-12-10 16:57
1/28. likte others awd miniz.
i have managed the room for 1/10electronic.

作者: henry888 時間: 2007-12-10 17:01

原帖由 deadmatch 於 2007-12-10 16:41 發表

 登錄/註冊後可看大圖

i have read about it.
i have a few points about cg.
as the calculation in applied maths, even if i put the motor like this, the cg will just rise for about 2-3MM,(this is due to the point that i wil ...

although the actual rise height is 2-3mm, when compared to the total height, it has a significant effect already
rise height - total height ratio is an important factor

作者: deadmatch 時間: 2007-12-10 17:03
then, what should i do now.?
i really want to use the 1/10electronics to do it, but the room is limited....
i can't put the motor lower....
Do you have any good ideas?

作者: billy86che 時間: 2007-12-10 18:59
2-3 mm is a lot already. The ride height of an AWD which is able to run fast is usually 1-2mm only.

If I were you, I would redesign everything.

作者: deadmatch 時間: 2007-12-10 20:00
老師, can you suggest a way that i can put all the 1/10 stuff in it without rising the motor height?

作者: billy86che 時間: 2007-12-10 21:48

原帖由 deadmatch 於 2007-12-10 20:00 發表

 登錄/註冊後可看大圖

老師, can you suggest a way that i can put all the 1/10 stuff in it without rising the motor height?

1. smaller battery
2. 3110 servo or similar
3. specktrum receiver
4. Xray ESC (300) for 1/18 but no reverse
5. reduce the size of the mid-differential and put it near the rear differential to give you more space for other things.

In fact, you sacrifice so many things.

作者: deadmatch 時間: 2007-12-10 22:44
sacrifice?
1. smaller battery....maybe i can found it.
2. i prepare to use it too
3. very expensive...
4. i have a same size...
5.....size reduce?

作者: billy86che 時間: 2007-12-10 23:19
I meant you have to do a lot just to add a mid-diff when I used the word 'sacrifice'.

作者: billy86che 時間: 2007-12-10 23:22

原帖由 deadmatch 於 2007-12-10 22:44 發表

 登錄/註冊後可看大圖

sacrifice?
1. smaller battery....maybe i can found it.
2. i prepare to use it too
3. very expensive...
4. i have a same size...
5.....size reduce?

3. Look for Taiwan FMs then (beware of interference)
5. the middle shaft is too big, reduce the diameter (other than the gear) to provide more space. Understand?!

作者: deadmatch 時間: 2007-12-10 23:34
got it.
but the best way i think is using brushless......(just kidding)
i will think about it.
'

作者: billy86che 時間: 2007-12-11 00:47
Brushless is very possible.

作者: henry888 時間: 2007-12-11 07:32

原帖由 billy86che 於 2007-12-11 00:47 發表

 登錄/註冊後可看大圖

Brushless is very possible.

整到無刷仲正過個中軸差速, 期待

作者: deadmatch 時間: 2007-12-11 17:25
it can be done buy just buying the motor....but the worst thing is we have to still keep the motor at the higher position as we still need the room for improvement...

作者: deadmatch 時間: 2007-12-11 18:09
i have successfully lower down the motor for 2mm.......
i know this is not a great change, but anyway...i can't think any good solution....

作者: billy86che 時間: 2007-12-11 18:20
Evolution should be done at the stage of having a satisfactory performance. Revolution is what you need now. (擰擰頭)

作者: deadmatch 時間: 2007-12-11 19:06

i know...
do you know where can i get a 130 brushless motor?
i have searched in the website....but can't find any place in hk.

作者: deadmatch 時間: 2007-12-11 19:11
i want to ask 老師too
Have you seen the abc 1/24 rc?
they put the motor on the top too..... can i just follow to do that?

作者: billy86che 時間: 2007-12-11 20:55
What's so great copying a car that no one wants?

作者: billy86che 時間: 2007-12-11 20:58
There is no brushless 130 but there are motors of similar or smaller sizes. Go to Wai xx (Wxx go) to find them. The problem lies on the 'non-reversible' ESC.

作者: deadmatch 時間: 2007-12-11 21:06
there is 130 brushless.
i have searched it , but it was sold in mainland china...
the esc is a problem too..

作者: deadmatch 時間: 2007-12-11 21:09
老師, even thought i put the motor down, the electronic stuff will at the same height too....
how can i improve this?

作者: billy86che 時間: 2007-12-11 23:04
Smaller cells, smaller receiver, smaller... but bigger body shell, wider offset, give up the original body clips on both sides...

作者: deadmatch 時間: 2007-12-11 23:19
i have give up the original body clips...
smaller cells...use lipo...but charger(quite expensive....)
smaller receiver... do it have am receiver?
........

作者: 800mah 時間: 2007-12-12 00:35

原帖由 deadmatch 於 2007-12-11 23:19 發表

 登錄/註冊後可看大圖

i have give up the original body clips...
smaller cells...use lipo...but charger(quite expensive....)
smaller receiver... do it have am receiver?
........

u can go with a e-sky balanced Lipo charger if u want, selling for under $100 out there.

作者: 800mah 時間: 2007-12-12 00:45
as for the batteries, u may consider these AAA sized Li-ion if u think Lipos are too complicated.

i used them on my mr015, all i had to do is rearrange the wires to form a 2S2P config.

作者: billy86che 時間: 2007-12-12 16:00
Ultrafire is reported to have at most 310mah @.

作者: deadmatch 時間: 2007-12-12 16:14
then, which brand should i use?

作者: billy86che 時間: 2007-12-12 17:37
No other aaa is worth trying at this moment. You can of course try the ultrafire and 玩一陣 every time.

作者: deadmatch 時間: 2007-12-12 17:41
我have tried the ultrafire in my diy 02 too>
it can work for 1 hrs....

作者: billy86che 時間: 2007-12-12 18:02

原帖由 deadmatch 於 2007-12-12 17:41 發表

 登錄/註冊後可看大圖

我have tried the ultrafire in my diy 02 too>
it can work for 1 hrs....

aaa size?

作者: 800mah 時間: 2007-12-12 19:32

原帖由 billy86che 於 2007-12-12 16:00 發表

 登錄/註冊後可看大圖

Ultrafire is reported to have at most 310mah @.

yeah~ it says 500mah on the battery and i've tried to charge it to ~ 3xx mah only (on a 501DX)
maybe becoz i not dare to over discharge it.

anyway, a 2S2P already gives 650-700mah @ 7.4v , good for people like me who doesn't want to do any modifications at all.

作者: deadmatch 時間: 2007-12-12 20:02
C123 SIZE.
it can make a 02 to work for 1 hr.

作者: billy86che 時間: 2007-12-12 20:38

原帖由 deadmatch 於 2007-12-12 20:02 發表

 登錄/註冊後可看大圖

C123 SIZE.
it can make a 02 to work for 1 hr.

But they are too big.

作者: deadmatch 時間: 2007-12-12 20:49
YES, but still now i can't find a good way to put the things into the car.....
troublesome...
maybe christmas holiday will have time to do it..

作者: deadmatch 時間: 2007-12-14 23:04
dear 老師,
i have try the best way to think about the arrangement .
and i have think about 2 types
1. the original one
Higher motor but more balance for the left and right.
2. the new one
the motor is lower but i do think that the left and right is +/- 20g.

The c.g. for this 2 types of arrangement is almost the same.
i will do both classic to test which is better or not.

作者: deadmatch 時間: 2007-12-20 22:31
更新，bumper 己加，請各位給點意見

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/)