Good!! Now we all agree that low tires will not change the speedometer reading. It will, however, lower the actual speed that the car is moving, right?
AGREED… LOL… The Speedo will read what it is calibrated to read at X RPM and top gear… I think we were getting lost in saying the same things in a different way…and then back and forth… LOL… I can see that you do understand this whole thing also.
The reason I mentioned the Speedo at all …is bec the THE EFFECT of the Incorrect or larger circumference tires…would AFFECT the Speedo in that it would then be unable to tell you the actual speed of the vehicle…That’s all… Not that it would read differently at X RPM’s bec of any tire/wheel changes…But it would just simply be the wrong reported speed…LOL, LOL… I am seeing how funny this all was actually
It was the wording and the use of the words AFFECT AND EFFECT Too funny actually
We are all on the same page…I am goin out for a Brew…
Blackbird
After considering this dispute for a few days it occurs to me that the speedometer is actually a tachometer for the wheels, graduated for the distance traveled with the original tires properly installed and inflated.
“speedometer is actually a tachometer”
My 1975 Civic /w 4-speed had no tachometer, just little dots on the speedometer indicating the engines limit in each gear, just like many Honda motorcycles.
I once drove it from Wash. DC to Chicago to Seattle to San Diego to Tucson to the Florida Panhandle and back to DC.
By myself. 6100 miles IIRC.
Fresh out of college and wanted to do something a little crazy.
It spent many hours well over 3000rpm, especially in TX.
In the end I was more revved out than the car.
This farm tractor tachometer/speedometer brings back memories.
http://www.oemtractorparts.com/shop4/pc/viewPrd.asp?idproduct=1357&idcategory=0
Of course The speedo is a tach for the wheels Rod…and its display mph are extensions of the Calibration equation…of what the mfg specified as the target Circumference of the Wheel/tire combo originally fitted on the vehicle and the final drive.
I don’t think I understand that Neato-Speedo…Seems to be showing the …what max RPM for each gear? I’m jut stumped on the numbering of it. Or is that Max MPH per gear…yea I think thats it
I like that the hour meter is counting the hours at or Above 1750…lol… Wha? Its not running below 1750 or something?
The upper side of the meter indicates speed in each of the gear ratios, Blackbird.
Aaaah YES…DUH
Honda, I don’t think that’s what the hour counter is doing. I think it’s keeping track of the equivalent number of hours at 1750. That is, 2 hours at 875 rpm equals 1 hour at 1750.
Here we go again,.
LOL…naw…I was just going to say…Really? That’s cool… That is a neat gauge wonder what year tractor that goes on…
I wish I had a Farm or land like a farm…Tractors are cool man
I liked the tractor!! I have driven one like it when new!! That tractor was somewhere around a 1950.
In 1952 I worked for a Ford Tractor dealer, and we took a new Ford 8N tractor and put a Ford Truck 6 cylinder engine in it, all with a factory kit. Now that was a Ford on steroids!!
What the? I thought there was peace and harmony back in the neighborhood…whats all this about now
Talk about “Here we go again”… This is all you bruddah
How can a speedometer possibly know how fast a car is moving? All it can do is stay in relationship with the engine RPMs. ( match up to whatever RPM’s the engine is)
YES…you are correct, it sure will stay in relationship to the engine RPM’s BECAUSE of the calculations that went into its design when it was made for that specific vehicle.
I SAY…The Speedo “knows”…or rather I should say that it “Projects” how fast the car is/will be moving based on the calculations that the Speedo was built upon…The info they use in the calculation involves…The final drive ratio of the vehicle and the circumference of the wheel/tire that the mfg specifically KNEW that they would install on the vehicle as standard equipment…and then it gets extrapolated for RPM’s…No?
That’s how it “knows”…it really doesn’t “know” it “projects”…based on the qualities that the mfg KNEW it would possess before leaving the factory…
In order for a “universal type” of Speedo to KNOW how fast you are going in ANY vehicle you put it into…like say if you could have a hand held Speedo that could go into ANY vehicle (A Garmin Nuvi for example)…and tell you your actual speed, without the Speedo having ANY INFO about the vehicle in any way. The few ways that could work is from a GPS link…or an Air speed type of device?..or…hmmm any others? Doesn’t matter we aren’t talking about this made up Speedo any way…No?
Again…why are we going here all over again…LOL
BlackenedBlueBird
No worries, I’m not going to pick a fight over a farm tractor tachometer-like I’d even know anything about it. 
I’ve seen other equipment that worked the way I described, so I was taking my best guess.
EDUT: Oh, looks like we’re back on the tach/speedo stuff again. I’ll go take cover until this mess blows over.
I just now c ame back to delete my post when I found your’'s Sorry, I should have left it alone!!
If you want I can go down the road and get my buddy to fire up his Manure spreader…LOL
I THOUGHT Peace, Love and Understanding were restored ?
OK…RESET…NOW…
SERENITY NOW !!!..SERENITY NOW !!! …Now? LOL hahahaa
Blackbird
@texases, depends on the car co. My 1985 Celebrity ran 75 at 2000RPM, it had a 2.5L 4 cylinder engine and a 3-speed automatic. 1st went to 50MPH (at 5000RPM), 2nd went to 75. I couldn’t even hit 3000RPM in 3rd, that would have been almost 115MPH and the car didn’t have enough power to go that fast! In the more modern era, GM still has similar gearing on the 4-speeds… they tune the engine for low-end torque (at the expensve of power near redline), give it similar 1st and 2nd gears to that 3-speed (if it’s a small 4, they might make 1st gear lower)… 4th is similar to 3rd on the old 3-speed, so then you have 3rd as a useful passing gear. And yes, the sticks have just as tall a top gear, they just assume you’ll downshift if you need to pass or whatever.
@B.L.E., yep, too many cars don’t seem to get the point of an overdrive, they’ll go from 3-speed to 4-speed to 6-speed autos, and from 5 to 6-speed sticks, and just make the gears closer together rather than adding a proper cruising gear (if they don’t already have one.). And Motortrend for one seems to encourage it. They measure 0-60, 0-100… OK. But also they measure top gear 30-50 and 50-70 times. So, this one article compares a Corvette with a few other cars. Well, top gear 30-50 and 50-70 was like 9.9 seconds, while the others were in the 2 second range. Why? The other cars were already at almost 2000RPM at 30, the Corvette… well, I’m surprised they could get it into 6th at 30, it would have been turning like 700RPM, and about 1200RPM at 50. 6th is a true cruising gear.
Anyway.. Honda likes to set up their cars so the engine's running like a blender. That's just how they are, it won't hurt a thing, don't worry about it.You are SO RIGHT Hwertz…I have often puzzled over car mfg’s transmission gear choises…Back in the day in my Camaro I ALWAYS wondered why I needed to spin 350 cubic inches of motor at 3200 RPM+ just to go 70mph…I mean at that RPM I was making PLENTY of HP and it was all being WASTED honestly…just drinking gasoline for no reason…it could EASILY have had more gears.
I also hear you when you say that they FORGOT the point of a PROPER overdrive… I mean why make a 6sp tranny when all they basically did was shuffle things around in a way so that the 6th gear equalled the 5thgear of the replaced transmission? This has been a near constant source of irritation for me for more years than I can count…honestly…
Methinks that BIG OIL had a hand in things early on…" Hey car mfg’s lets agree to only let your Auto trannys have 3 speeds…so we can spin that big iron at a higher RPM…and they will require more go-go juice overall" Multiply that by Tens of MILLIONS of vehicles I always thought that LOL…but who knows…
But I am really in your corner of asking for a PROPER OD gear…esp with today’s engines and their flexibility and power output in such a small displacement and all…could be a true fuel saver… Go too far and its a fuel waster tho…lol
Blackbird
Jeesh…big oil…transmission conspiracies…gimme a break…
And @hwertz - like I said, auto trannys can handle taller gears. Also older pushrod 4s with low rpm redlines, high torque down low. Not so much the DOHC 16 valvers of today.
LOL…I know right? hahahahaa I thought that would get someone going…its all a big conspiracy…lol
ITS A TRANSPIRACY MAN !..or TRANSPARENCY? …LOL or a TRANSPARENT TRANSPIRACY… ha
Blackbird