Self-locking differential Abarth 500 595 695 Prometeo
Self-locking differential Abarth 500 595 695 Prometeo complete with bearings and oil seals
Transactions secured with SSL
Shipping costs calculated in the cart
Contact us using our dedicated form
Self-locking differential Abarth 500 595 695 Prometeo
The Prometeo differential kit for Abarth 500 595 695 comes complete with bearings and oil seals and can be installed without any modifications.
If you are looking for maximum performance for your Abarth, whether standard or tuned, the self-locking differential is for you, also making driving safer and more intuitive.
Front-wheel drive sports cars can suffer from poor traction due to the high torque being sent to the wheels.
This is especially evident when exiting a curve, where the inside wheel is partially relieved of the weight that is on it due to the load shift caused by centrifugal force: one of the two wheels is thus able to unload a much lower torque to the ground than the other. Remember that a free differential has the characteristic of always dividing the torque into two equal parts, so the maximum torque that can be unloaded to the ground is limited by the grip of the wheel with the least load.
Several modern cars are already equipped as standard with an electronic system called TTC, which SIMULATES a self-locking differential: in practice, when one of the two drive wheels loses grip, the electronic control unit responsible for traction control sends a braking pulse to the brake caliper of the slipping wheel: the negative torque that is added to the wheel allows the normal differential to be “cheated”, sending an equal torque also to the wheel with greater grip. The TTC is certainly a valid and safe system, which guarantees good control of the vehicle, however, we reiterate, it is not a self-locking differential and does not guarantee the same performance that only a good self-locking differential can provide.
If you're used to using your car on the track during track days, or you don't like having to suffer the annoying slipping of the inside wheel every time you exit a corner in a somewhat cheerful way, then a real self-locking differential could be the thing for you.
Our self-locking differential with helical gears allows the asymmetrical division of the driving torque coming from the engine, this means that the wheel with the most grip will always receive a surplus of torque compared to the less loaded wheel. The percentage of locking in traction is approximately 35%. We preferred not to go beyond this since the cars on which the differential can be mounted are road cars.
The helical gear differential has a very progressive operation and does not create unwanted effects in normal driving.
The percentage of lock-up when released is limited to approximately 25%, so as not to influence braking and cornering.
It is very difficult to explain in words the effect you get, but the sensation you get when you open the throttle after the apex of a curve and not feel the nose going off on a tangent, but pulling inwards is something unknown to a front-wheel drive with a standard differential.
Furthermore, the operation of our differential is compatible with the TTC.
How does a limited slip differential work? First, let's look at how the standard front differential works.
The differential is a device that divides the driving torque coming from the gearbox exactly in half for each of the two half-shafts, regardless of the difference in the revolutions of the two wheels of the axle itself. Therefore, as you can see in the figure, if the driving torque entering the differential is 100 (the units are completely arbitrary), a torque of 50 will end up on each wheel.
There is, however, another important parameter to consider: the grip of the tires on the ground. In fact, the torque can be "discharged" to the ground up to the grip limit of the wheel; this limit is therefore proportional to the load fraction acting on the wheel and to the grip coefficient, which depends mainly on the consistency of the ground.
So if one of the two front wheels ends up in an area with less grip (for example on slippery asphalt), the torque to the ground that can be discharged by the wheel in question is reduced, given that the wheel itself reaches the slipping condition. Due to the property of the differential mentioned above, which is that of being a mechanism that divides the input torque into equal parts, we will have the same torque value also on the other wheel which still maintains good grip.
As can be seen from the previous figure, if the value of the slip limit torque of the front left wheel is 20, the right wheel will also be able to unload a torque of 20 to the ground. And therefore the total traction of the front axle is reduced to the value of 40, significantly lower than the value of 100 in the previous example.
If we mount the Prometeo self-locking differential instead of the normal differential, traction improves in these cases. Let's see how and by how much.
First of all, in conditions of good and uniform grip, the self-locking differential behaves like a normal differential, as can be seen in the following figure.
However, if one wheel loses grip, the self-locking differential transfers a greater torque to the other wheel. The total torque discharged to the ground by the front axle is therefore greater than that discharged to the ground by a common differential. The following figure is very explanatory of this mode of operation.
The 35% locking percentage is the best compromise found through numerous tests performed in different conditions. Let's not forget that an excessive locking percentage would have made the vehicle too understeer in normal driving, with consequent problems in driving. And, on the other hand, too low a locking percentage would have reduced the benefits of the self-locking, making it objectively useless.
The PROMETEO self-locking differential is installed on the gearbox in place of the standard differential
Model Compatibility:
- Abarth 500
- Abarth 500c
- Abarth 595
- Abarth 595c
- Abarth 695
- Abarth 695c
Availability:
The goods leave directly from the manufacturer to arrive directly to the customer and not waste time on useless shipments, the availability of Prometeo is generally immediate
- Marca
- Abarth
- Compatibile con Modello:
- 500
500c
595
595c
695
NOTE SULLA COMPATIBILITA IN DESCRIZIONE - Compatibile per Anno:
- 2008
2009
2010
2011
2012
2013
2014
2014 - 2016
2015
2016
2017
2017 - 2020
2018
2019
2020
2021
2022
2023
2024
2104 - 2020
Dal 2017 in poi
Dal 2021 in poi
Pre-restyling 2008 2015
Tutti gli anni di produzione
dal 2020
modelli restyling dal 2016 in poi
How to pay for an order
The accepted forms of payment, which will be shown during the order process in our e-commerce, are as follows:
1) By credit/debit card or PayPal account:
For payments by credit or debit card it is possible to use the PayPal system, an independent but very efficient and widespread service that is not perfectly secure in all the various phases of the transaction procedure. PayPal offers the possibility to pay with the most used credit cards, without any obligation to register on its platform and at no additional cost. For more information on the PayPal service: www.paypal.it
2) Pay in 3 interest-free installments with Paypal:
Buy now and pay later with Paypal. Payment deferred in 3 installments, without interest, with direct debits to your credit card. First installment immediately, second installment after 30 days, third installment after 60 days. Easy, immediate and 100% secure. Payment method valid for orders up to 2000 euros. Pay in 3 installments eligibility is subject to Paypal approval.
3) Advance bank transfer:
By requesting it during the online shop wizard. Once the purchase has been confirmed, our system will send the relative order confirmation containing all the data necessary to complete the transaction. Using this form of payment, the order is expected to be shipped at the time of actual crediting, which can usually vary from 2 to 4 working days.
Conditions for resellers
Payment, shipping and discount conditions are confidential and are negotiated privately with each individual retailer.
Shipments
We entrust our shipments to leading logistics partners. Each package, before being entrusted to the carrier, is checked and if necessary is equipped with additional packaging, both internally and externally.
Dropshipping: for some orders, in order to speed up delivery times as much as possible, we ask our supplier for direct shipping. For this reason it may happen that the sender is different from our address.
The shipment and delivery of the products will be carried out in many areas of the world. By finalizing the purchase, it will be possible to verify the coverage of your locality together with the calculation of the expected transport. If you have different needs, please contact us in order to estimate ad-hoc transport costs.
Once shipped, delivery times will be 24/48 working hours for Italy. While for other countries the delivery time will vary depending on the destination.
Shipping cost
Only for Italy will free shipping be offered to all purchases of an amount equal to or greater than € 300.00 including VAT, below this amount a shipping fee will be requested which will be calculated based on the volume weight of each item . For all other destinations, the transport price will be calculated at the time of the order based on the volume weight of the order and its destination.
For resellers, due to the offers offered, the shipping costs will always be charged, regardless of the purchase amount.
Free Transportation Insurance:
We offer all our customers an exclusive transport insurance which provides for the replacement of any breakage of the purchased material, caused exclusively by the courier during transport, at no additional cost. Without "trapping" the customer in lengthy paperwork, it will be sufficient to use the appropriate replacement request form - contact form - to allow us to organize collection from the address indicated by the customer which will coincide with the replacement of the insured material.
How to proceed to take advantage of the insurance:
As soon as the package is delivered, please carry out a scrupulous check in the presence of the courier. If the package arrives damaged on the outside, it does not mean that the inside is damaged, in any case it is recommended to sign the delivery note noting the wording "damaged package, acceptance subject to inspection". Subsequently, immediately carry out an internal check of the package within and no later than 2 days from receipt of the same. If any type of damage is found, immediately notify our staff so that we can take the necessary measures, i.e. the replacement of the damaged part or the entire product under warranty at no additional cost.
The replacement times for the insured material will vary according to the availability of the requested spare parts. In any case, these terms will fluctuate between 2 days and 30 working days from the request. Our staff will take care of keeping the customer updated on the procedure of the open file.
Return Policy
Every private customer who buys from our e-commerce has the unquestionable right to withdraw from the order according to the laws in force, within a maximum period of 14 non-working days from the date of delivery of the order, without the need to specify the reason. In the event of withdrawal, the customer has the right to request a refund of the amount paid, or (if he wishes) to request an exchange of the product of equal or greater value. The direct costs of returning the goods will be borne by the customer.
Exclusions from the right of withdrawal: The right of withdrawal applies exclusively to the private consumer, as per current laws. The right of withdrawal is not applicable if the buyer is a VAT holder who proceeds with the purchase as a company or professional. The right of withdrawal cannot be applied to personalized objects according to explicit directives of the customer.
How to exercise the right of withdrawal:
To obtain a refund (or to make an exchange) it is necessary to inform us of the intention to withdraw, within 14 non-working days from the delivery date, using the number +39 338 5261459, or by sending us a communication using the appropriate contact form. Subsequently it is essential that the material to be returned is sent at the customer's expense to: Bully Machines di Luis Bertelli, via di Campaldo, 10 - 56122 (PI) - Italy.
Important: For exercising the right of withdrawal, the customer is requested to send the products to our warehouses in the same state (like new) in which they were shipped by us, i.e. unused, unused installed, in the same packaging with which we shipped and complete with all accessory parts present inside the box at the time of shipment.
If the product(s) arrives used, spoiled or does not conform to the requested condition, we reserve the right to withhold a certain amount which will be equal to the decrease in the value of the goods. The customer is responsible for any decrease in the value of the goods, resulting from handling of the goods other than that necessary to establish the nature and characteristics.
The responsibility for the integrity of the goods during the return shipment is always the responsibility of the customer. We therefore invite you to insure all shipments destined for withdrawal.
Refund Timeline:
In the event of a refund request, the same will take place no later than 14 days from receipt of the material price at our office. Shipping costs will be reimbursed only if they have been paid at the time of purchase while the costs of returning the item are always to be understood as the responsibility of the customer who makes use of the withdrawal.
feedback Report comment