Archive for ‘ October, 2014 ’

High Torque Cordless Impact Wrench

The time had come for a more powerful cordless impact wrench which would be useful not only at trackdays for removing wheel bolts if needed, but also for use in the workshop and at home for some of the more difficult to undo nuts and bolts. It is all very well having everything to hand in a workshop such as compressor, air impact wrench and such like, but when without a workshop and all the associated tools to hand you do not want to get stuck in the middle of a task.

I knew that Snap-On cordless impact wrenches were good from previous experience (of borrowed use!), but they were sadly outside of my budget for a powerful unit at around £600, plus the breakaway torque was quoted at 840Nm/620 lb ft and the 18v model only has a 2.5Ahr battery, so they were removed from the list. There are many ‘middle of the road’ cordless impact wrenches on the market, but I wanted something with some grunt, so the search began.

After some online research, reading reviews and watching some of the You Tube demonstration videos, I decided that one of the Milwaukee M18 ½″ High Torque Impact Wrenches would be ideal, having looked at several offerings from other manufacturers.

M18 FUEL™ ½″ High Torque Impact Wrench

M18 FUEL™ ½″ High Torque Impact Wrench

Initially the one that caught my attention offered 610Nm of fastening torque, the HD18 HIWF, which I thought would be more adequate for what I would need. But as with all things it is always better to over spec than under spec.

In the end I opted for the M18 FUEL™ model, M18 CHIWF12. The spec on it is massive, and main feature that drew me to this particular M18 FUEL™ high torque impact wrench was its ability not only to deliver pneumatic fastening performance of up to 950 Nm max of fastening torque but it also offers up to 1491 Nm nut-busting torque. Hub Retaining Bolts, Driveshaft Nuts, Bottom Pulley/Crank Pulley Bolts can all be undone with ease. When I saw the abilities of this particular unit it was a simple choice.

So far I have been impressed with the features and its peformance. In the UK they come with a 3 year warranty, the build quality is excelent and so far it is impossible to fault. It also has a setting offering tightening torque up to 135Nm, which is great for carefully and quickly doing up wheel bolts, prior to final checking with a torque wrench.

An expensive purchase, yes, but justifiable considering its capabilities. There are many impact wrenches out there, but this particular wrench seems to cope with anything thrown at it. Highly Recommended.

M18 FUEL™ ½″ High Torque Impact Wrench

M18 FUEL™ ½″ High Torque Impact Wrench

Track Day September 2014 Snetterton

Having been away from the track for too long, a track day came up with Open Track at Snetterton on the 300 Circuit on Monday 29th September 2014; it was a late addition to their calendar.

Unfortuantely track time during the day was limited in the morning due fog delaying the start. Visibility was down to below 50m, meaning you couldn’t see the marshalls’ post or the lights or from one end of the pit lane to the other, so sighting laps couldn’t get underway until 11am once the fog had lifted as it wasn’t safe to go out. But once the fog lifted track time got underway, and it was a dry, busy morning on track. The afternoon brought some light showers. The ambient air temperature was good at around 15 degrees C, meaning inlet air and water temperatures were fine all day.

One additional change had previosly bew made to the gearbox oil cooler, and after monitoring on track the highest temperature recorded was 109.8 degrees C which is a huge improvement over the 125+ which was seen with no gearbox oil cooler fitted during similar track sessions.

There were still some fantastic pictures of the day, taken by Tony Harrison.

Thanks to Tony Harrison for the On Track Photographs © Copyright Terms:

Astra VXR Sprint.....

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