RX - 2nd Gen (2004-2009) Discussion topics related to the 2004 -2009 RX330, RX350 and RX400H models

Towing: OD vs D4

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Old 03-31-08, 07:25 PM
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tran_man
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Default Towing: OD vs D4

I did a quick search and didn't quite find the exact answer I was looking for.

I towed a flatbed motorcycle trailer with one motorcycle today for about an hour, mostly freeway, and it got me thinking.

The trailer is not heavy at all and the motorcycle is a sportbike. Not that much weight being towed. I'm towing it with an 08 RX.

I'm a towing newbie. I know the manual says to keep the transmission in D4 while towing. I don't like the gas mileage it gets.

Can you guys help me in listing some pros and cons of towing in OD vs D4 during normal freeway driving and stop & go type traffic.

Should I follow the manual regarding towing or is it safe in OD?

Any help is appreciated.
Old 03-31-08, 07:28 PM
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arnieosp
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With something this light I wouldn't worry about D4.
Old 03-31-08, 08:09 PM
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salimshah
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While towing, if you notice your transmission repeated searching for the right gear (termed as "hunting") then you need to remove the over-drive as an option.

Salim
Old 04-01-08, 09:46 AM
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tran_man
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In OD, there is no transmission hunting so I'm assuming I'm good.

Based on the responses so far, I am going to trailer my bike in OD unless there is a clear negative to it. Thanks guys!
Old 04-01-08, 10:25 AM
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Boognish
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Originally Posted by salimshah
While towing, if you notice your transmission repeated searching for the right gear (termed as "hunting") then you need to remove the over-drive as an option.

Salim
That's my take on it, as well. Same thing goes for climbing a grade.

Also, as an aside, I'm pretty sure both 4th and 5th are technically "overdrive" gears, it's just that (obviously) 4th is a shorter ratio than 5th.
Old 04-01-08, 11:56 AM
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Dip Don
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A good rule of thumb for towing in O/D. If you get to a point where you can't accelerate, such as on a small grade, it's time to shift down one gear.
Old 04-02-08, 08:16 PM
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longshot
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tran man - what type of trailer do you have ? Brand ? Size ?
Thanks !
Old 04-03-08, 06:40 AM
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19psi
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i'd leave it on OD as longa s your'e just cruising, but if you go up a hill that's kinda steep or long, hit the od button and let it cruise up in 4th.
Old 04-04-08, 04:31 AM
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tran_man
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Originally Posted by longshot
tran man - what type of trailer do you have ? Brand ? Size ?
Thanks !
I've got a Kendon Dual Rail trailer:

http://www.kendonusa.com/dual_trailer.htm

According to the website, it's 400 lbs empty. I'm towing my 06 Honda 600rr and sometimes another sportbike. I'll get a picture up this weekend since I'm going to the track again.
Old 04-04-08, 04:33 AM
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Pic of trailer from website:
Attached Thumbnails Towing: OD vs D4-kendon-dual-rail.jpg  
Old 04-08-08, 06:11 PM
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Pictures:





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