Design and construct a ‘bullet- proof’ home hitting net that is Flightscope capable

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GeoffDickson

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I want to design and construct a ‘bullet- proof’ home hitting net that is Flightscope capable. I need your help to get it right.

Model 1: No ceiling
6m distance from tee to net
4m high back net
The Vertical Launch Angle to hit over net (VLA(max)) = 33.7*
PGA Tour PW = 24.2*
At 6m distance, 24.2* hits impact net at height of 2.7m. This provides safety margin of 1.3m

Known issues:
1. No protection for uncommon but almost inevitable skied shots…and one might be one too many. This could be ‘resolved’ by not hitting teed shots, but that takes a bit of the fun out of it.

Questions:
Is the above math correct (http://www.visualtrig.com/)?
Is the above logic correct?
Is the 1.3m safety margin sufficient?
What club could I hit and keep it within the 4m high back net?

Model 2: Ceiling
Given there is always the risk of skying a teed shot (i.e driver, 3 wood), I want to explore the feasibility of a ceiling net. Lets assume the same basic structure: 6m distance from tee to net and 4m high back net.

Model 2A: Just cover the entire floor area with a net.

Model 2B: Provide a ‘partial ceiling’. The net would run the entire width of the net, but hang Xm above the ground (i.e. lower than the 4m perimeter netting), start Ym in front of the tee (i.e. not directly overhead the golfer but close enough to catch the skied shots) and finish Zm from the back net (so that anything that passes under the ceiling net hits the back net and anything that would gone over the net, is caught by the ceiling net.

I can’t find any Flightscope recommendations for minimum ceiling height, but Trackman talks about 3m minimum and 3.5m optimal. Presumably this would permit you to hit up to 60* wedge and still get a reading???

I need some help/advice in calculating the best value for X, Y and Z. Then I can figure out the cost benefit of 2A compared to Model 2A.

Any other comments and suggestions also appreciated. Thanks.
 
Frans@France

Frans@France

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Model 1
1) Yes, math is correct
2) logic correct
3) 1.3m more then enough
4) What is your PW Launch angle, otherwise it's impossible to say. The PW loft at the tour might be as low as 42* while both your PW loft and Launch Angle could both be higher.

Model 2a & 2B

imho no need to cover the entire ceiling. I have no ceiling in the first 1.5 m (your Ym) before the tee and with my height of 3.5 someone needs more 66* degree before missing the ceiling. Never saw that.

However I would continue the ceiling net until the backpanel. Depending on the tension of that ceiing the backspin will make the ball "roll" forward on the ceiling and thus stay at ceiling height. If you want to stop that you need to install the ceiling netting as some sort of "drapped curtains" which can catch the ball.

Trackman needs to see +/-1.5 spin rotations in order to measure spin. So the needed ball fligth length depends on spin and ball speed. My 3.5 ceiling makes a 45* LA @ 80-90mph already troublesome to read.
 
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mgranato

mgranato

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My indoor FS setup is an 8' high net 15' from the tee area. I don't hit anything more lofted than a 7 iron from that distance. The net is archery netting, virtually indestructible for golf balls. I can keep 8 and 9 irons below the top of the net, but I can also hit them over it, so indoors I don't take the chance. The net is suspended with aluminum cable so it can be slid in/out of place like a curtain. The archery netting is heavy enough so that it does not need any additional anchoring (even for high speed driver hits). When I'm hitting indoors it's usually just to work on general swing maintenance or changes with a mid iron or 3 wood/hybrid off the ground, which is all this setup was intended for.

This in not a commercial setup, nor would I trust a high handicapper getting lessons to always stay on the net. If that is your goal, a commercial setup, get as much netting as you can afford. :)
 
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Frans@France

Frans@France

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#9 would be around 40* (actual loft) :D
42* maybe a bit an overestimate but it might be next years model PW :cool:
 
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hp12c

hp12c

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mgranato said:
My indoor FS setup is an 8' high net 15' from the tee area. I don't hit anything more lofted than a 7 iron from that distance. The net is archery netting, virtually indestructible for golf balls. I can keep 8 and 9 irons below the top of the net, but I can also hit them over it, so indoors I don't take the chance. The net is suspended with aluminum cable so it can be slid in/out of place like a curtain. The archery netting is heavy enough so that it does not need any additional anchoring (even for high speed driver hits). When I'm hitting indoors it's usually just to work on general swing maintenance or changes with a mid iron or 3 wood/hybrid off the ground, which is all this setup was intended for.

This in not a commercial setup, nor would I trust a high handicapper getting lessons to always stay on the net. If that is your goal, a commercial setup, get as much netting as you can afford. :)
Click to expand...

:cool: Ur secert is out no wonder u play well and TTCOTM!
 
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GeoffDickson

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I hit a 46* PW, but tend to hit it higher than I should.

I think a 3.5m ceiling starting 1.5m in front of tee with the ceiling going all the way to back net looks like a good option. That will provide about 6.5-7.0m from tee to back net.

I think I will be able to get a reading on all but the steepest irons (i.e 56* and 60*). A 3.5m ceiling and 6.5m from tee to back net is AoA=29*....A 52* will almost certainly get 5.5m of travel before hitting the ceiling, which should be enough for a reading.

Like Mike, i will be using archery netting as the impact net (hung like a curtain) and will also use a curtain like approach for the side perimeter nets. I plan to use clothesline wire to hang the nets. Galvanised poles will provide the structure.
 
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