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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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Impact Driver update FYI
Still being slightly puzzled that a 12v impact driver could develop more
torque than a 230v version, I decided on a practical trial. Hardly a major scientific experiment, I only did each trial once, but tried to keep things even 6mm x 90mm & 8mm x 100mm Turbogold coach screws into softwood, no pilot; 12v machine (135 Nm) did the 6mm in 4.06 secs, 8mm in 6.24 secs. 230v machine (100 Nm) did the 6mm in 7.15 secs, 8mm in 9.47 secs. So the mains machine is actually slower in practice. Not enough to worry about, 7 seconds to drive in a 6mm coach bolt is hardly slow. The point in buying the mains machine was to reduce the load on the battery machine. John Rumm's learned explanation "Well if you assume that the mechanical power out is approx half the electrical power in - that gives you 150W ish for the mains one, whereas the cordless will probably develop in excess of 200W". Seems spot on - but it didn't feel right. -- Dave - The Medway Handyman www.medwayhandyman.co.uk |
#2
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Impact Driver update FYI
The Medway Handyman wrote:
Still being slightly puzzled that a 12v impact driver could develop more torque than a 230v version, I decided on a practical trial. Hardly a major scientific experiment, I only did each trial once, but tried to keep things even 6mm x 90mm & 8mm x 100mm Turbogold coach screws into softwood, no pilot; 12v machine (135 Nm) did the 6mm in 4.06 secs, 8mm in 6.24 secs. 230v machine (100 Nm) did the 6mm in 7.15 secs, 8mm in 9.47 secs. So the mains machine is actually slower in practice. Not enough to worry about, 7 seconds to drive in a 6mm coach bolt is hardly slow. The point in buying the mains machine was to reduce the load on the battery machine. John Rumm's learned explanation "Well if you assume that the mechanical power out is approx half the electrical power in - that gives you 150W ish for the mains one, whereas the cordless will probably develop in excess of 200W". Seems spot on - but it didn't feel right. Thanks for bothering and posting. That is quite a difference - especially as I thought they might actually be even. -- Rod Hypothyroidism is a seriously debilitating condition with an insidious onset. Although common it frequently goes undiagnosed. www.thyromind.info www.thyroiduk.org www.altsupportthyroid.org |
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