4K vs. 2Y, not much difference?

[jdbubb at verizon.net (Dan Bubb)]

I read all your messages.
I'm only disagreeing with shifting right beyond the torque peak. For max acceleration you should shift beyond the POWER peak.
Dan

From: "Brett Van Sprewenburg" <brett@ataxxia.com>
Sent: Thursday, November 02, 2006 12:09 PM
Subject: Re: 4K vs. 2Y, not much difference?


> 
> I think that if you had waited until you had read my next message,  
> you wouldn't have pulled
> the trigger so fast Dan. :)
> 
> (My next message talked about torque peak at the wheels, because we  
> are here discussing
> the variabilites of a transmission and it's effects).
> 
> Here's a nice article detailing pretty much what my second message  
> said, and what you just
> restated:
> 
> http://www.allpar.com/eek/hp-vs-torque.html
> 
> 
> ==Brett
> 
> 
> 
> 
> 
> 
> 
> On Nov 2, 2006, at 11:39 AM, Dan Bubb wrote:
> 
>> No, no, no!!
>> You should shift after the power peak, not the torque peak.
>> You can plot torque at the wheels through the gears or power at the  
>> wheels through the gears and they will give you the same results as  
>> far as shift points. Where the torque available at the wheels in  
>> one gear drops below the torque in the next gear will be the shift  
>> point although you'd probably want to shift a couple hundred revs  
>> higher to accommodate the slight drop in speed during shifting.
>> It's worth noting that the shift RPM will vary depending on the  
>> gear spacing. Typically you want to shift at higher RPM in the  
>> lower gears.
>> Grant did a study of this a year or so ago.
>> If I had time at work I'd take the time to demonstrate. It'll have  
>> to wait till later.
>> Dan
>>
>> From: "Brett Van Sprewenburg" <brett@ataxxia.com>
>> Sent: Thursday, November 02, 2006 9:43 AM
>> Subject: Re: 4K vs. 2Y, not much difference?
>>
>>
>>>
>>> Arrg, shift point....just past your torque peak is better, not
>>> before.  duh, sorry.
>>>
>>> ==Brett
>>>
>>>
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>>>
>>
> 
>