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A. Gearbox Oil Policy Hewland Engineering Ltd is frequently asked to recommend oil type or oil brand for it's transmissions. It may be that in the future Hewland will have specific product advice, but this is not the case at present. We recommend that only well known brand name gear oils be used. A leading oil company advises us that conventional oils contain 'too many' additives for the utmost transmission efficiency, but will almost always lubricate well. Therefore, conventional gearbox oil from one of the leading brand names is almost certain to lubricate very well indeed. It may be at the cost of inefficiencies however. Therefore we do not recommend the use of specific racing oils initially, although a test program may prove these to be advantageous. However, we offer the following advise: Fit a temperature sensor from your data acquisition system into either the gearbox sump area, or into the oil pipeline on a pumped oil system. Monitor the oil temperature and note the pattern of temperature increase and the top temperature achieved. NB it usually takes at least 15 minutes of running to reach a level maximum temperature. The ambient temperature and the loads through the gearbox will affect temperature, i.e. a cold wet day will produce cooler gearbox temperatures. There are two reasons for logging oil temperature: 1. An above normal temperature indicates a gearbox fault (Bearing or tooth failure etc.). This can detect a big failure before it is catastrophic. 2. When you have established a pattern of gearbox temperature for your vehicle, you can then try different oil quantities and then different oil types. As a broad guide, the oil quantity and type that runs the coolest is the most efficient at lubricating and minimising power loss. Tel: +44 (0)1628 827602 Fax: +44 (0)1628 829706 E-mail: sales@hewland.com We take all major credit cards. We also offer discount accounts for those spending over £5000 per year on spares. Account Enquiries Hewland has a worldwide agent network, which may prove to be your preferred way to buy, as they often have other products and services that you need also. They may also be nearby to you of course. Agent Network * For the USA, all purchase of our existing products should be made via our USA agent. However, for new project work or for technical advice, please contact us directly. Enquiries |
