I know, I know, just been busy with my other project too all because I was truck less and had this nice 69 Burmpside flatbed in storage that some attention.

 

[QUOTE=nossliw;16498477]you mean 25.8 for every 1000 rpm... or 98.04 mph.... and rpm and speed are not a linear relationship with gears...

Mine works this way:


MPH RPM MPH per1000 RPM


45 1160 25.77


50 1290 25.80


55 1420 25.82


58 1500 25.86


60 1550 25.83


65 1680 25.84


70 1810 25.85


75 1940 25.86

 

I believe 3600 rpm, with 0.71 OD, with 3.55 gears, and 33" tires works out to 140 mph.

Circumference of the tire is 33" * 3.14 = 103.62"

(3600 revs/min) * (1 driveshaft rotation / 0.71 rev) * ( 1 tire rotation / 3.55 driveshaft rotation ) * ( 103.62 inches / tire rotation) * (60 min / 1 hour) * ( 1 ft / 12 in ) * ( 1 mi / 5280 ft ) = 140 mph.

 

Those calculations pretty well match my observiations. 3600RPM/140MPH = 25.7 constant. Thanks.

 

[QUOTE=Airstreamer67;16498658]

Ah i follow you now bud, I read into it wrong. well put.

 

Well I would say like I said before and put up a video. It's pretty simple to get up to speed, do a three second video of your GPS recording your speed, and the argument is over. But wait, that didn't work last time so I'm not sure why it would work this time. Like I have also stated before, I will gladly stand corrected. I just can't imagine these big *** trucks doing any more than 110 mph.

 

Torque pro logs your speed and where through gps

 

Can you capture the noise it makes on acceleration and de acceleration?

 

I need to get one of those apps I'm a bit behind electronic technology so I'll look into it.
There's no way I he'll I'll do that speed again in the truck the thing was unstable and plain dangerous, sorry Byron call it BS if you want but there's no way I'm doing it again.
Nottyrope at that speed? Or just a normal plain acceleration and deccel drive?

 

I need to get one of those apps I'm a bit behind electronic technology so I'll look into it.
There's no way I he'll I'll do that speed again in the truck the thing was unstable and plain dangerous, sorry Byron call it BS if you want but there's no way I'm doing it again.
Nottyrope at that speed? Or just a normal plain acceleration and deccel drive?

 

normal accel in 3rd and decel

 

I'll see what I can do when I get a chance.

 

Looking back over my data above, I just realized that my terminology was screwed up. So, just to correct the record, the constant of about 25.80 shown in the third column should be called RPM per MPH, not what I was trying to call MPH per 1000 RPM for some reason.


Now, back to your regular programming.