RC EVOLUTION - 遙控工房 - 香港RC遙控車討論區

標題: Gear Ratio Enquiry [打印本頁]

作者: yokomo 時間: 2011-5-26 23:30
標題: Gear Ratio Enquiry
If I use

- LRP SXX V2(Setting: 0-3-2-0) with 3.7V Lipo
- SP 3.5R Motor
- Pinion Gear 20 with Spur Gear 90
- Rear Tyre Diameter 43mm

Do u think the Gear Ratio & ESC setting are too aggressive?

Thanks All !!

作者: billy54321 時間: 2011-5-27 08:02
Your rollout is around 30, it is normal.
Rollout = wheel diameter x 3.14 x pinion gear no. / spur gear no.
For rollout no. from 30 to 35 is also acceptable, but it really depent on the setting of your esc , the track layout and also your driving style............

作者: yokomo 時間: 2011-5-27 09:08
回復 billy54321 的帖子

Thanks a lot !!

作者: jf813 時間: 2011-5-27 09:32
本帖最後由 jf813 於 2011-5-27 09:32 編輯

Tried 35mm at TRC seems to work quite good with LRP 3.5T + 12.25mm rotor. But must use Turbo as it will be quite slow on the straight without it.... BTW: Using HW 1S ESC and I set my turbo slop to almost highest and turbo timing to around mid level. Still testing it now.

作者: pcm118 時間: 2011-5-27 09:43
rollout 30 is fine, but you can try to increase turbo to get faster straight line speed

作者: Tinng 時間: 2011-5-28 19:24
1cell 3.5T 如同跑stock.....LRP 無Turbo包你輸3條街...

作者: pcm118 時間: 2011-5-30 00:19
LRP 用 boost (setting 1,3,5,0) is ok

作者: Tinng 時間: 2011-5-30 06:59

pcm118 發表於 2011-5-30 00:19

登錄/註冊後可看大圖

LRP 用 boost (setting 1,3,5,0) is ok

一定吾夠HobbyWing off 曬boost + max. turbo 快!!!

作者: jf813 時間: 2011-5-30 09:20
回復 Tinng 的帖子

yes, took the LRP out and replace it with HW 1S. Huge different. Especially with new 3.0 firmware.

作者: pcm118 時間: 2011-5-30 11:21

jf813 發表於 2011-5-30 09:20

登錄/註冊後可看大圖

回復 Tinng 的帖子

yes, took the LRP out and replace it with HW 1S. Huge different. Especi ...

sounds interesting! let me get a HW 1S and try it out!

thanks ching

作者: billy54321 時間: 2011-5-30 13:38

jf813 發表於 2011-5-30 09:20

登錄/註冊後可看大圖

回復 Tinng 的帖子

yes, took the LRP out and replace it with HW 1S. Huge different. Especi ...

Absolutely agree!

作者: yokomo 時間: 2011-5-31 15:34
I tried the following setting @ TRC last week

- LRP SXX V2(Setting: 0-5-2-0) with 3.7V Lipo
- SP V2 3.5R Motor
- Pinion Gear 18 with Spur Gear 90
- Rear Tyre Diameter 43mm

The speed is ok la. The temperature of ESC is around 80 C & the temp of motor is around 90C. I felt the punch is not enough & can be more aggressive.

Anyway, I'll try to use hobby wing 1s later on.

Thanks All !!

作者: Tinng 時間: 2011-5-31 16:00

yokomo 發表於 2011-5-31 15:34

登錄/註冊後可看大圖

I tried the following setting @ TRC last week

- LRP SXX V2(Setting: 0-5-2-0) with 3.7V Lipo

I did almost the same setting except the pinion gear is 21T in JV....corner handling is good but lost a lot in straight road ( increase boost can have more speed in straight road but lost handling in corning)...beside the energy distribution is bad that the speed trigger is pull 90% in the corner exit and lost more in straight road after 3~4 mins run... replaced the HW 1S, off the boost/punch for better corner handling and make over 80% turbo will bring u crazy speed in straight road thru out 8 mins!! I am quite sure HW ESC is the only way to beat down the 4WD touring!!

作者: yokomo 時間: 2011-5-31 16:17
回復 Tinng 的帖子

C Hing,

Actually, I am still learning how to play 1/12. That speed is still acceptable there.

Thanks All !!

作者: jf813 時間: 2011-5-31 16:39
回復 yokomo 的帖子

wor, motor very hot wor!!! I run at TRC too and normally motor is around 50-60 degree. ESC is hot around 70...... sorry can't remember the gear ratio but rollout as said earlier around 35......

作者: yokomo 時間: 2011-5-31 16:52
回復 jf813 的帖子

Yes, the temp of my 3.5 is quite hot there. I am still thinking how to fix it.

Thanks All !!

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