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 First Four Off Road First Four 7 The Laurels Flightway Business Park Dunkeswell Honiton Devon, EX14 4RS England
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ZF74 Steering Pump
For High Pressure Ram Systems
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Ladoga
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Military Users
Commercial Users
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TYPE R WINCH SYSTEMTHE ALL NEW H12 "TYPE R" SYSTEM DEVELOPED BY US FOR MILEMARKERAbout 18 months ago we looked at what the winch challenge guys wanted, a fast 4 tonne winch with a deep drum and the ability to rotate the wheels whilst winching.
Our Benchmark.We knew that the benchmark winch, the Warn 8274, good as is was, was having to work very hard to cope with the demands of ever more challenging winch competitions. But also knew we had two huge advantages, a much heavier duty power transmission system and up to 100 horsepower on engine power, rather than a 2 horsepower battery.Our Target.The target speed was 100ft/min under load and 4.5tonne single line pull and a few months later the Type R was born.The Name.The "Type R" stands for rapid, which in comparison to its main competitor the Warn 8274, is a gross understatement. With a line speed of 50 ft/min at 1000rpm, 100ft at 2000rpm and so on, how can it be beaten by a battery?Like the 8274 the H12 Type R has a big deep drum, which is crucial in preventing jamming, when the drum gets close to full and the winch is running fast. Like the 8274 the line speed is fast, but unlike its battery powered adversary the Type R, doesn't slow down under load, or burn out it's motor or solenoids half way through an event, it just keeps going. Like the 8274 the Type R generates heat, but unlike an air-insulated motor, it gets rid of it through efficient radiation from constantly circulating fluid and an aluminium oil tank with a huge surface area. Testing.We began the testing ourselves starting with the simple brakes-on drag test. First we fitted a set of old tyres to our 90 and proceeded to winch on the tarmac with all four wheels locked. After six full 90ft pulls, each comprising a 52 second pull, free-spool, drive-back and repeat, we had the hydraulic fluid temperature up to 50c. After the very heavy 540ft pull, which took only 6 minutes, the only damage was 4 hexagonal tyres and a lot of rubber on my lane.Mainly through word of mouth, we found 6 willing guinea pigs who wanted in on this system early and went off to do their own thing. Ladoga.We took part in a couple of UK events and with no serious problems, set about preparing for Ladoga. The Ladoga Trophy, a 9 day event round a Russian lake, is arguable the toughest event in the world and during the many hours of hard winching, never missed a beat. Unfortunately the rest of the vehicle and its occupants did, with no support vehicle we were forced to retire early, but 2 other vehicles with the same winches, but supported by service crews, went on to do a lot better again with faultless Type R winch systems.Results, so far.The Type R system essentially works and how, or should I say wow! We are unaware of any major failures yet though we realise that the Type R is not indestructible, especially in competition use. Recent feedback is that many more electric winches are being destroyed just trying to keep up with it.Type R Test VideoParts to the System.
Most of the people taking part in these events are, or have access to skilled mechanics, or engineers, who in many cases have already built or modified the rest of the vehicle. The particular pump drive system suited to a each vehicle. Optional Extras.So far the Type R hasn’t needed an oil cooler, but when the wick gets turned up this is a simple option, which could even have a booster fan fitted.We are also experimenting with multi-speed motor for increased operational versatility. Hydraulic systems give you so much more, including simple monitoring of exact temperature, system load and a good idea of what the line pull is. |
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© 2010 First Four Off Road. All Rights Reserved. |
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