Well that doesn't change the diff ratio. But it reminds me of watching
an acquaintance hand rotate his engine in a parking lot with the plugs
pulled and the car in top gear so he could measure distance traveled
per revolution. I suggested mathematics, but he didn't consider that
to be a practical alternative.
On Oct 20, 2008, at 2:58 PM, Richard Taylor wrote:
> ....and suppose you have an overdrive unit?
>
>
> With a locked or welded diff you don't do multiplication by two. I
> find it simpler and more accurate to do ten rotations of the tire--no
> interpolation. 37 output shaft turns vs. 39. Not a lot of room for
> error there. I just had to do it for the Ambro.
> On Oct 20, 2008, at 12:31 PM, Ted Schumacher wrote:
>
>> Bobby, tried to reply last night and not sure if reply got through.
>> Here we go again. Apologies for sending twice if it did get through.
>> This will only work for "open", not welded or limited slip,
>> differential. Put a mark on the pinion (drive shaft) flange and a
>> mark
>> on one wheel (or tire or brake drum). Keep the other wheel, tire,
>> etc.from turning. Turn the drive shaft and count the number of turns
>> of
>> the pinion flange needed to get 1 revolution of the tire. Multiply
>> this
>> by 2 and you have the ratio. Example - just over 2 turns is a 4.1,
>> just
>> under 4 turns is a 3.9, 1 3/4 turns is a 3.5, etc. All you have to
>> do is
>> know what ratios were available. The example of 1 3/4 turns as a
>> 3.5 is
>> not quite correct. Triumph did not make a 3.5, but they did make a
>> 3.45. That's one method - no tools, no fuss, no dismantling. Ted
>>
>> Bobby Whitehead wrote:
>>> Forgot to mention... I have several differentials laying around. I
>>> don't have them in the car. I have known and determined I have a
>>> 3:89 locked in the GT6. If I indeed DO have a 4:11 I need to
>>> understand how to figure it out without being in the car.
>>>
>>> Thanks guys....
>>>
>>> Bobby Whitehead
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>>
>>
>> --
>> Ted Schumacher
>> tedtsimx@bright.net
>> http://www.tsimportedautomotive.com
>> 108 S. Jefferson St.
>> Pandora, Ohio, USA 45877
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>
> Bill Babcock
> Babcock & Jenkins
> Billb@bnj.com
> 503.936.7660
> www.bnj.com
>
> Editor
> Ke Nalu e-Magazine
> Paddlesurfing's Web Journal
>
> Bill@kenalu.com
> www.kenalu.com
> blog: www.ponohouse.com/ponoblog
> _______________________________________________
> Support Team.Net http://www.team.net/donate.html
>
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>
Bill Babcock
Babcock & Jenkins
Billb@bnj.com
503.936.7660
www.bnj.com
Editor
Ke Nalu e-Magazine
Paddlesurfing's Web Journal
Bill@kenalu.com
www.kenalu.com
blog: www.ponohouse.com/ponoblog
_______________________________________________
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