Oil change or adjusting the diff's oil viscosity can be a pain sometimes. Our team driver Aleksi Reiman has come up with couple modifications to make it a bit easier. These mods will make it easier to fill the diff same way time after time. Reiman has modified his Xray T4 diff with one and Xray XB2 2WD buggie's diffs with these both two modifications. Both mods are such which is recommended to do for new parts and doing them is completely on the owner's responsibility.
Many has come across the case where the thread on the diff cup gets worn out from time to time. Usually there are two different ways which will cause the thread stripping. First is over tightening. For example with electric screwdriver that happens quite quickly (bet that many has done this). Second is the case where the diff oil ends up in the screw's hole and flows on the bottom of it. When you are tightening the diff the oil on the bottom will make a so called hydrolock and the screw bottoms up before than it should and causes the over tightening.
To prevent this hydrolock of happen you can drill out the screw holes with 2mm drill. This will prevent the situation of oil filling the screw hole. When hole drilled the oil can flow through and the screw can be normally tightened all the way.
Note that this should be done to new diff cup, so you do not damage the existing threads during drilling.
In the picture below you can see the holes which are drilled out in XB2 diff cup.
Filling up the diff can be a little tricky job to do with exactly same amount of oil each time. It is important that it is done so to make the diffs feel the same time after time. If the amount of oil varies between oil change the alternation of viscosity is not exact since the oil mixes up with air differently each time. Xray advises to fill up the diff by weight of the oil which makes the oil volyme to be same each time. To do so you will need to use a precision scale to measure the oil's weight each time. Reiman modified his diff so that it has a bleeder screw which allows all extra oil to get out and the diff will be filled to the maximum level of oil each time.
Bleeder screw is drilled with a 2.5mm drill and the screw itself is a M3x2.5 set screw with a flat head. You start with drilling a hole under the cross pin's end like shown in the picture below. After drilling the hole it is a good time to pre-thread the hole by screwing the set screw into it and making the screwing it on it's place later much easier. Remove the screw after this and put a side to wait the last step.
Next you can assemble the diff normally to the point where you fill up the oil. You can now fill up the oil to the top of the diff cup. After placing the diff cap on top of the cup you can see that all extra oil will bleed out from the bleeder hole. Tighten the cap screws normally. Turn the outdrives few times (bleeder hole up) to let all the extra oil out and finally screw down the set screw so that it is flush with the cap surface.
Oil bleeding and the set screw on it's place.
When using this bleeding screw modification you will ensure that your diff is always made with the maximum amount of oil and minimal amount of air is inside to mess up the oil's viscosity.
All products listed as “in stock” are in our warehouse and ready to be shipped within the next day. Exceptions to this are pre-orders and possible, but unlikely, errors in stock numbers. All products include the VAT according to the destination country. Prices are subject to change without prior notice.
We are answering emails everyday from the morning to the late evening, no matter if its Sunday or Christmas eve. We work in the EET time zone which is +2h from GMT. During the day our customer service is usually really fast and in the evening we are little slower due we have less people to answer questions. Easier things are usually handled within the hour and shipping related things we try to handle during the day so they can be shipped out the same day. Our goal is to answer all emails within 24h no matter how difficult the question is. The fastest way to get customer service is always to send us a email. Please include relevant pictures and a structured email with proper sentences so we can answer you faster. Take your time and read trough your email once before you send it to us.
We ship globally for example to Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden and United Kingdom, Norway, Turkey, Switzerland). And many other countries, just go to the checkout and see if you can checkout. If not just let us know and we will quote you a price as we are able to ship to any country in the world.
We accept Paypal, credit card payments and IBAN/BIC (SEPA) bank transfers.
Our credit card and web bank services are delivered by Finnish Paytrail Oyj.
Paytrail Oyj, Business-id: 2122839-7
All payments are made in Euros. You can however browse the shop in other currency but the price then is not final. You will see the final Euro price in your shopping basket when paying for the product. The price is shown in “5. Send Order” part of the checkout form.
Our shop automaticaly includes or excludes VAT percentage from the prices by the destination country. You can change the destination country from the checkout pages before you order. All our customers will pay the same price no matter the included VAT percentage. Companies who are buying with VAT numbers can buy products with exluded VAT according to destination country.
You can browse all our shipping options with out registering. Just add the products you are interested in and proceed to checkout page where you can see all the shipping options and estimated delivery times.
Basic tracked shipping starts from 4,90€ (GLS road freight) in European Union countries.
An international GLS parcel is delivered to neighbouring states of Finland like Sweden or the Baltic countries in a standard delivery time of 24 to 72 hours. To more distant European countries the international parcel dispatch takes between three and six working days, to remote areas up to eight days. Rough estimate is 1 week from order to delivery.
Please note that GLS shipping time is calculated in working days (Monday to Friday) and excluding the day when parcel is shipped.
Note! Here you can find estimated delivery times.
Note! Here you can find collected statistics about average delivery times.
• DHL Express and UPS Express are our fastest delivery options. Both options can reach almost anyplace in EU in 1 day, but some places take 2 days.
• Depending what kind of products you want to order the shop will let you choose from available shipping options.
• Both Options are also Door To Door Services. The Courier will deliver the parcel to your door. But they also have pickup points where they might drop your package off so you can pick it up when it suits you.
When you are checking out your order you can see a more precise estimate of each shipping option to your country.
We accept returns of new, unused merchandise within 14 days from the delivery. Please contact us at [email protected] to receive return information. The customer is responsible for any return costs unless otherwise agreed to with our customer service. We try to return the money with the same payment method that was used to pay for the order, if its not possible we make a wiretransfer. You can also request a gift card if you are making a new order to speed up the process.
We also accept returns after 14 days upto 50days, but we refund them with a giftcard to our shop so you can replace them with any products we sell. Please contact our customer service for details.
After we receive the merchandise and verify its re-sellable condition, we will refund the money or give you a giftcard. Depending on the item this will take 1-3 days after we have received the item. If there is a delay we will contact you.
Note! Every return made without notice via email will be charged with handling fee of 20€. Handling fee will be reduced from the total refund.
In the rare occurrence that the shipment has been damaged, please take pictures and send those to our customer service [email protected] immediately and we will make sure we get you sorted and back to enjoying our hobby. Also notify the courier bringing you the shipment that it has been damaged.
If you feel that your product is defective please send us a email and we will let you know what to do next. Most items do not have a warranty as they will break in normal usage. For example if you hit something solid or take a larger tumble. Properly used items should easily last 3-12 months and during this period we are able to replace broken items if they have a manufacturing or material fault. We have years of experience with different makes and they all have different warranty policies. We have chosen to work with brands that have a good understanding how to serve their customers and you can be assured that you will get the best customer experience possible with us.
We do not replace or exchange products that are not defective or broken by improper use or have not been maintained. But we do help and teach you how to do things properly so you do not break anything in the future, just email us and we will help you out. We are however unable to wrench for you, its part of the hobby so its important that you will learn that part also your self, we have great tools to sell you so just ask us what you need.
Note! Many manufacturers are strickt that electronics are not allowed to be modified (connectors changed etc.) without disabling the warranty. Remember to check this from your products manual.
Don’t worry you are safe with us! Most of our customers feel that they get excellent service in the rare occurrence that they encounter a problem with the product they have bought.
And remember if you run in to a problem or you feel that there is a problem with arrived products do not hesitate to contact us. We are here to help and we do our best to sort it out as soon as possible.
We ship a lot of orders each day and rarely there are errors. We do however try to minimize the effect on the customer. Please contact us immediately if we have made an error and we will make it right.
Always contact us before returning any product, we can not take responsibility for shipments that are sent without prior notice. Its very important that we can tell you how to mark the parcel so it will be processed in a timely fashion.