Can you get by with a stock diff?
Many street/strip cars get by on a stock posi-style diff, or God forbid, welded spider gears. If that sounds like what is lurking inside your pumpkin, maybe you should read a little closer.
Why do you need a gear diff on a car?
This lets the diff transfer power to the wheels very smoothly, even when making very tight turns when there is the greatest speed difference between the right and left wheels. This smoothness helps maintain traction in slippery conditions. Durability & maintenance. This is where a gear diff shines.
What kind of gear marking compound should I use?
Tech Tip: use only actual gear marking compound (available from Randy’s Ring and Pinion, and many auto parts stores). This is because other marking substances (like shoe polish), can be hard to read.
What's the difference between a ball diff and a gear diff?
The ball diff (top) uses steel balls that roll on smooth rings to provide diff action without backlash or play while a gear diff must have some play to operate properly. Smoothness. A ball diff has the advantage here. Because it has no gears and thus no gear teeth, it has no backlash or free play.
Can you run different diff ratios?
Additionally, different front and rear axle gear ratios are safe if your vehicle can switch from a 2WD to a 4WD and you don't plan to use the 4WD. Another way to mitigate the difference in the front and rear axle gear ratios is to change the diameter of the front wheels and the rear wheels.
How do I choose a differential gear?
10:0018:07Choosing The BEST Axle Gear Ratio - YouTubeYouTubeStart of suggested clipEnd of suggested clipOne is the deeper you go so the numerically. Higher gear set you have the weaker the ring and pinionMoreOne is the deeper you go so the numerically. Higher gear set you have the weaker the ring and pinion becomes.
What diff gears are faster?
A lower (taller) gear ratio provides a higher top speed, and a higher (shorter) gear ratio provides faster acceleration. . Besides the gears in the transmission, there is also a gear in the rear differential.
What are the different types of diffs?
There are four common differentials used between vehicles – open, locking, limited-slip and torque-vectoring.
Are 3.73 or 4.10 gears better?
3.73 VS 4.10 Ratio3.73 Ratio4.10 RatioNot as fast off of the lineQuicker Off The LineLower TorqueHigher TorqueBetter Gas MileageDecreased Gas MileageHigher Top SpeedLower Top Speed
What are 3.55 gears good for?
BEST TOWING RATIO: In general, the best towing axle ratio for most of the post-2010 pickups is in 3.55 or 3.73. Those ratios provide very good acceleration with gas V-8s and diesels.
What are 4.10 gears good for?
This equates to a greater amount of power transferred to the wheels. Installing 4.10 gears improves the car's performance on the track but with negligible effects to the highway driving. If your car is equipped with an overdrive, you may not even notice a difference in gas mileage with the new higher gearing.
What gears are best for racing?
If we have a daily driver, 2.55 to 3.25 gear ratios typically work best, whereas a street/strip application we would usually use a 3.42 to a 3.90 gear ratio, and race applications most commonly use a 4.10 and above gear ratios.
Is a bigger differential better?
Higher ratios mean the engine has to run faster to achieve a given speed. Lower ratios allow the engine to run more economically to maintain that given speed.
What are the 4 types of differentials?
There are four common types of differentials on the market – open, locking, limited-slip and torque-vectoring.
What is the difference between a 1.5 and 2 way diff?
A 1-way differential will only have a positive lock to limit slip during acceleration. A 2-way differential will limit slip during both acceleration and deceleration. A 1.5-way differential is actually a 2-way differential with a different lockup rate between acceleration and deceleration.
Is limited slip differential worth it?
A limited slip differential increases a car's power and speed by utilising engine power more efficiently, thus allowing for a smoother and more enjoyable drive. Even on standard roads, LSD units can help prevent slippage and spinouts for near-perfect traction that translates to a safer and smoother ride.
What fluid is used in gear diffs?
A gear diff is much more adjustable, provided you have the sealed type that can be filled with silicone fluid. By filling the diff with lighter (higher viscosity) or heavier (lower viscosity) fluid, you can set the diff to spin freely or be virtually locked.
What is the difference between a ball diff and a gear diff?
The ball diff (top) uses steel balls that roll on smooth rings to provide diff action without backlash or play while a gear diff must have some play to operate properly. Smoothness. A ball diff has the advantage here. Because it has no gears and thus no gear teeth, it has no backlash or free play.
Why is a ball diff important?
Weight. Ball diffs win on the scale, and as the heaviest rotating component other than the wheels in most cars, having a lightweight diff is important. The combination of light weight and smoothness is what makes ball differentials so popular for racing in applications where power is low enough that a gear diff is not required.
What happens if you turn the diff at 200 rpm?
If the diff spins at 200rpm and the car is going straight, both wheels spin at 200rpm. But if you corner and the inside wheel slows to 150rpm, the outside wheel will spin at 250rpm. If it slows to 100rpm, the outside wheel will spin at 300rpm. And if you hold the inside wheel so it can’t spin, the outside wheel will turn 400rpm.
What happens if you tighten a gear diff?
If it’s set too loose, it will slip, and that can lead to a diff-gear meltdown. Tightening the diff can slow its action slightly, but even if you sock the diff screw down, it will spin relatively easily. A gear diff is much more adjustable, provided you have the sealed type that can be filled with silicone fluid.
What are the two types of differentials?
Differentials can be divided into two types: gear and ball . The essential difference is the means by which the differential’s output gears interface with the spider gears. In the case of a gear differential, the gears are just that: gears.
What happens when a car turns in a straight line?
If the car is driving in a straight line, the wheels spin at the same rpm. But when the car turns, the outside wheels must travel farther than the inside wheels, and so the outside wheels must rotate faster (and the inside wheels, slower). So how does the diff “know” what to do?
How long does it take to change gears on a Ford?
A] The Ford's bolt-in third member (circle) that holds the gears and diff combine with bolt-in axles to allow gear changes at the track in as little as 40 minutes. The axletubes and centersection are steel, making it easy to simply weld-on different brackets to match any rear suspension, as shown by one of many ready-to-bolt-in Moser Engineering 9-inch Ford assemblies.
What makes Ford better than other cars?
But what makes the Ford "better"? Besides an inherently large ring-gear diameter (bigger than all competitive passenger-car performance rearends, except the massively heavy and relatively rare 9-inch Dana 60), the Ford's biggest strength advantage over competitive rearends is its greater hypoid distance. Hypoid distance is the distance from the center of the ring gear to the center of the pinion gear. Given approximately equal ring-and-pinion diameters, the greater this distance (or gear offset), the higher the ring-and-pinion assembly's inherent strength. That's because offsetting the gears results in more gear-tooth surface contact at any given moment. The advantage increases at lower (high numerical) axle ratios because, compared to milder ratios, the low-ratio gearsets have relatively fewer pinion gear teeth in contact—meaning less teeth to spread and absorb the load.
What bearings did Ford use in the 1960s?
In the early 1960s, it introduced the "Daytona" pinion bearing retainer, which accepted a slightly larger bearing. It's still available from Ford Performance under PN M-4614-B. Even larger bearings and 35-spline pinions are available through aftermarket sources.
What is a third extra pilot bearing?
6] A third "extra" pilot bearing supports the back-end of the pinion to limit gear deflection under high torque loads. Opinions differ as whether this is really a design enhancement or a crutch (see Photo C, below, and section " Rear Pinion Bearing: Strength Enhancer or Band-Aid? ", below ).
Why is the 9 inch arrow a band aid?
The 9-inch's controversial rear pinion support bearing (arrow) is widely believed to enhance strength, but it may really be a Band-Aid because the traditional front two bearings are located too close together.
What happens if you tell someone you have a 9 inch Ford?
If you tell someone you have a 9-inch Ford, automatically you're a badass." — Tom, Tom's Differentials
Why is Ford so strong?
4] A larger offset (hypoid distance) between ring-gear and pinion- gear centerlines is the key reason the Ford is inherently stronger—but also why it's slightly less efficient.
How does shim work on a ring gear?
If using shims: Adding shims on the ring-gear’s smooth side of the carrier moves the ring-gear closer to the pinion, causing the teeth to mesh tighter, decreasing the amount the backlash. Adding shims on the other side moves the ring-gear teeth away from the pinion, increasing backlash.
What size rears have carrier adjustment?
The most commonly known rears with this type of carrier adjustment are the Chrysler 7.25, 8.25, 8.75, 9.25, Ford 9 inch, and GM’s 8.25 inch. The GM 9.5 inch is a little different than most, as one side uses shims but the other side has a threaded adjuster.
How does a rear end adjuster work?
They work by tightening one side and loosening the other side to move the differential sideways. If your rear end does not use adjusters, then you need to adjust backlash by using shims.
How much does diff oil cost?
Where are you guys buying diff oil . It`s only $8-9 a bottle and lasts a long time . So say $35 shipped for three bottles . If that breaks your piggy bank you might want to think of a different hobby .
What is a good starting point for a buggy?
A good starting point is 5000 , 7000 , and 3000 . But it can differ on your buggy , track conditions , and driving style .
Can you use diff grease in a car?
Also shock oil would work, but it is too thin too do much. Also you could just use diff grease in them if your not racing, and handling isn't much issue. Reply Like.
Can heavy duty oil be used on chain saws?
heavy duty gear oil will work, but u cant vary viscosity much. also, bar and chain oil for chain saws is about right, but again, cant vary it.
Does normall mutigrade oil damage diffs?
it worked pretty well but difficult to get it right and as mkincy said it's thickness changes aswell. it doesnt do any damage to your diffs , so give it a try if you like.
What is the best weapon to use in self defense?
An electric shock weapon that shoots a projectile or pepper spray is good when you are out and about. You will have some range between you and the attacker when you use your self-defense weapon.
What weapon do you use to defend yourself?
If you are unlucky enough that they are right next to you or grabbing you…a stun gun, knife, or tactical keychain or pen will help you defend yourself. Burglar with Crowbar.
What is less lethal ammo?
Less lethal ammo is any type of ammunition designed to not put a hole in someone. These can be anything from beanbag rounds to a paintball filled with tear gas. The point of this type of ammunition is to deter or incapacitate the attacker so you can escape.
What do you get with a 12 gauge bullet?
What you get with a 12 gauge rubber bullet round is a shell with several rubber coated pellets. The number varies, but you can get many smaller pellets or a few larger pellets. They will work the same as a normal shotgun shell when it comes to the coverage of the pellet pattern. Think birdshot vs 00 buckshot.
Can you change ammo in a gun?
You probably already have a gun, so changing the ammo might be all that it takes. Even though you carry a gun, using it and knowing the likely outcome can make you hesitate. Trying some less lethal ammo might help. Less lethal ammo is any type of ammunition designed to not put a hole in someone.
