3/17/2023 0 Comments Using transmission fluid for mac![]() The hub does not have to be filled for this to work if the scavenging port is played with for fluid dynamics, or you can use a scavenge pump and gravity feed. ![]() You can build an oil circulation loop into the system by injecting at the axle and scavenging from out near the windings. I mentioned to farfle that this could be taken to the next step since he is machining axles for the stator. I would definitely recommend this over air cooling- certainly for the geared hubs as it takes the heat to the outer covers of the hub. A simple oil cooling setup can drastically cool your motor- in my case although my windings are knackered, at least I can still use it until the new bits turn up. I know that people have always said that it’s better to run at WOT but have never seen the results as plain as this today. It was also very interesting to note that cruising at say ¾ throttle resulted in the temps going up- but as soon as I went to WOT at the same speed, the temperature started coming down again and quite rapidly. Most of the time it was running at 75 celcius. It was very interesting to see the temperature on the windings go up by a degree or two a second whilst accelerating from standstill, then drop almost as fast once up to speed and on WOT. The hottest it got was around 90 celcius. It’s a very basic closed oil-splash system just like most lawnmower engines. I didn’t want too much as it would leak out of the axle- which I also sealed as best as I could from the outside. I sealed the motor up with silicone on the covers, drilled a little pressure relief vent hole hear the axle on one of the covers and put 1-200ml of transmission fluid in it. In real terms it tends to be cruising at WOT around 1300W on the CA. Without oil, the motor gets up to 120 celcius and is rising by 10kilometers (6 miles). It still works, but gets hot real quick so whilst waiting for another stator to rebuild it, I decided to try oil cooling as a band aid solution. I cooked my poor little MAC by putting way too many amps through it. ![]() They each require CVT fluid or DCT fluid, which are formulated specifically for their needs.Ok, so here’s my story. More vehicles today are using continuously variable transmissions (CVT) or dual-clutch transmissions (DCT). Though much simpler, the manual transmission fluid must maintain viscosity to enable crisp shifts and protect brass synchronizers against corrosion and wear. Manual transmissions require the driver to select the proper gear depending on driving conditions. This means the fluid must maintain its viscosity and remain clean to do its job properly. The fluid acts as a hydraulic fluid to actuate the transmission solenoids and clutch packs to enable smooth shifts. Your vehicle’s computer shifts gears automatically based on engine speed, load and other factors. Most modern vehicles use automatic transmissions, which commonly use 5-6 forward gears, but can include up to 10. Automatic TransmissionĪlthough they share the same purpose, automatic and manual transmissions differ significantly in design. Doing so may require specialized tools and a service manual, but it can be done on most "filled-for-life" transmissions. Although some vehicles today use “filled-for-life” transmissions that theoretically never require a fluid change, it’s best practice to change fluid in these units at least once during their lifetime, and more if you tow or haul. It’s also a good idea to use a transmission flush to help clean deposits or sludge that may reduce shift quality or component life. This helps keep your transmission clean and working reliably. If you tow or haul frequently, your fluid will require more-frequent changing. For best performance and long transmission life, change the fluid according to the maintenance guidelines given in your owner’s manual. Transmission maintenance can be easy to overlook – until something goes wrong and you’re faced with an expensive repair bill. Why should you change transmission fluid? As a result, synthetic transmission fluid delivers excellent wear protection to help your transmission last as designed, helps reduce heat to keep components clean and flows readily in the cold for smooth, crisp shifts. This allows formulators to use only molecules that serve a designed purpose. Instead, synthetic base oils are built from the ground up in the lab. Synthetic transmission fluid doesn’t contain the impurities inherent to conventional fluids distilled from crude oil. Like synthetic motor oil, synthetic transmission fluid offers several benefits compared to conventional transmission fluid, including improved wear protection, increased cleanliness, better heat resistance and smoother cold-weather shifts. AMSOIL Transmission Fluid What are the benefits of synthetic transmission fluid?
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