[MBZ] Re: Top speed in what gear?

2005-07-15 Thread Dan Weeks
Not at all uncommon at all. In a relatively low-powered engine, a 
higher gear can put you too far off the power peak to overcome wind 
resistance and other running friction at higher speeds, so you can 
achieve a higher speed in a lower gear. Downhill or in a stiff 
tailwind, you may be able to exceed the lower gear's top speed, but 
not on the level.


Dan


What?

You're saying that your car has a higher top end in 4th than it does
in 5th? Unless there is a governor attached to overdrive, that is
totally counter intuitive.

On 7/14/05, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote:


 (will go faster in 4th gear but I didn't know that before and 
haven't had an opportunity to find out how much faster since). 



--
Some folks march to the beat of a different drummer.
I don't even need the drum.

-

LT Don
1977 Mercedes 240D (Slug)
1972 Honda CB-500K



--
Dan Weeks
Freelance Writing and Photography
515/279-4825
[EMAIL PROTECTED]



Re: [MBZ] Re: Top speed in what gear?

2005-07-15 Thread Loren Faeth
You are talking about my first car, a 1956 36 hp VW that someone put 6.50 
15s on the back.  Uphill in 3rd, downhill in 4th.


At 08:54 PM 7/14/2005, you wrote:
Not at all uncommon at all. In a relatively low-powered engine, a higher 
gear can put you too far off the power peak to overcome wind resistance 
and other running friction at higher speeds, so you can achieve a higher 
speed in a lower gear. Downhill or in a stiff tailwind, you may be able to 
exceed the lower gear's top speed, but not on the level.


Dan


What?

You're saying that your car has a higher top end in 4th than it does
in 5th? Unless there is a governor attached to overdrive, that is
totally counter intuitive.

On 7/14/05, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote:


 (will go faster in 4th gear but I didn't know that before and haven't 
had an opportunity to find out how much faster since).



--
Some folks march to the beat of a different drummer.
I don't even need the drum.

-

LT Don
1977 Mercedes 240D (Slug)
1972 Honda CB-500K



--
Dan Weeks
Freelance Writing and Photography
515/279-4825
[EMAIL PROTECTED]

___
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For repairs see www.oldworldauto.com

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[MBZ] Re: Top speed in what gear?

2005-07-15 Thread Bucks2
You can't beat my BMW Isetta though for proving there is always an exception. 
It overrevs if you try to exceed 38-40 MPH in 3rd gear. 4th (top gear) will 
take you to 54 mph. It matches your criteria, low power, 298 cc, 13 hp. If 
you've seen a rolling egg you know about wind resistance. 

I think the majority of the time you see the phenomena beign talked about is 
when overdrive is involved. The drive train is geared to run up to to 1:1 
ratio and then when you engage OD it is for economy not speed. 

Ken

In a message dated 7/14/2005 9:25:19 PM Pacific Daylight Time, 
[EMAIL PROTECTED] writes:
From: Dan Weeks [EMAIL PROTECTED]
Subject: [MBZ] Re: Top speed in what gear?
To: [EMAIL PROTECTED]
Message-ID: [EMAIL PROTECTED]
Content-Type: text/plain; charset=us-ascii ; format=flowed

Not at all uncommon at all. In a relatively low-powered engine, a 
higher gear can put you too far off the power peak to overcome wind 
resistance and other running friction at higher speeds, so you can 
achieve a higher speed in a lower gear. Downhill or in a stiff 
tailwind, you may be able to exceed the lower gear's top speed, but 
not on the level.

Dan


Re: [MBZ] Re: Top speed in what gear?

2005-07-15 Thread Loren Faeth
yes, or poor engineering.  In the case of my VW, the oversize rear tires 
acted as an overdrive.  Had it been left per Dr. Porshe's design, it would 
have run out to a better top speed.  However, being broke and cheap, I left 
on the oversize tires and imagined i was saving money by lowering engine 
RPM/road speed.


At 11:35 PM 7/14/2005, you wrote:
You can't beat my BMW Isetta though for proving there is always an 
exception. It overrevs if you try to exceed 38-40 MPH in 3rd gear. 4th 
(top gear) will take you to 54 mph. It matches your criteria, low power, 
298 cc, 13 hp. If you've seen a rolling egg you know about wind resistance.


I think the majority of the time you see the phenomena beign talked about 
is when overdrive is involved. The drive train is geared to run up to to 
1:1 ratio and then when you engage OD it is for economy not speed.


Ken

In a message dated 7/14/2005 9:25:19 PM Pacific Daylight Time, 
[EMAIL PROTECTED] writes:

From: Dan Weeks [EMAIL PROTECTED]
Subject: [MBZ] Re: Top speed in what gear?
To: [EMAIL PROTECTED]
Message-ID: [EMAIL PROTECTED]
Content-Type: text/plain; charset=us-ascii ; format=flowed

Not at all uncommon at all. In a relatively low-powered engine, a
higher gear can put you too far off the power peak to overcome wind
resistance and other running friction at higher speeds, so you can
achieve a higher speed in a lower gear. Downhill or in a stiff
tailwind, you may be able to exceed the lower gear's top speed, but
not on the level.

Dan

___
For used parts email [EMAIL PROTECTED]
For new parts see www.buymbparts.com
For repairs see www.oldworldauto.com

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