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K1100LT windscreen modification?

 
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ricketyclik



Joined: 26 Jul 2013
Posts: 9
Location: Canberra, Australia

PostPosted: Sat Jul 27, 2013 2:12 am    Post subject: K1100LT windscreen modification? Reply with quote

Hello group, newbie to K1100's here, although I have owned a rickety old K100RT for a few years.

So, I collected my new ride yesterday, and it seems pretty good (although the power increase over the K100's doesn't seem as big as I've read - maybe a throttle body balance?)

Anyway, as with my K100RT the turbulent zone from the windscreen fully raised is at around my eye level (I'm about 5'10"). Unlike my K100RT I'm feeling suction on my body towards the screen, which surprises me given that there's a gap between the fairing and the windscreen, which in theory should negate the negative pressure.

So, here's my thinking: I need a couple of inches of extra screen height, and an increased gap between the screen and the fairing - so why not just drill new holes in the screen and move the mount points down, thus achieving both of the above?

Has anyone tried that? What were your results? Does anyone have any thoughts on this? Will the screen retain enough structural integrity?

I have spent an hour or so searching the web for this specific question having been answered before, but to no avail. Forgive me if I'm recovering old, well-trodden ground.
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1995 K1100LT-P Dual Seat
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grant93
Flying Brick Rider


Joined: 23 Mar 2013
Posts: 238
Location: Victoria - Australia

PostPosted: Sat Jul 27, 2013 5:27 pm    Post subject: Reply with quote

Gidday Folks,

Another Aussie - Good to see.

Thought I'd reply even though I am really no help to you regarding your questions so sorry about that.
I am 6'2" and find the screen extremely quiet when up on the highest setting but I also have not had a good play around with the settings over a long trip as I am still sorting out my bike before rego.

All the best and I hope the outcome with moving the screen is a success.
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Cheers Grant

1994 K1100RS
1981 R100RS
1978 R100RS
1928 Chevrolet tourer

www.montythe1928chevrolet.blogspot.com.au
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whyoldbill
Flying Brick Rider


Joined: 12 Jun 2006
Posts: 440
Location: in the boonies, northwest of Columbus, Ohio

PostPosted: Sat Jul 27, 2013 7:17 pm    Post subject: Re: K1100LT windscreen modification? Reply with quote

ricketyclik wrote:


So, here's my thinking: I need a couple of inches of extra screen height, and an increased gap between the screen and the fairing - so why not just drill new holes in the screen and move the mount points down, thus achieving both of the above?

Has anyone tried that? What were your results? Does anyone have any thoughts on this? Will the screen retain enough structural integrity?

I have spent an hour or so searching the web for this specific question having been answered before, but to no avail. Forgive me if I'm recovering old, well-trodden ground.


I'm not sure my windshield has a couple of inches below the current holes. I'd be a little leery of doing that for a couple reasons
1. with my luck I'd split or crack the whole windshield drilling it
2. if that didn't happen, then it would snap off at speed and decapitate me.
I just opted for a 2-1/2" taller windshield,
http://parabellum.com/K1100-LT-Electric--P25.aspx
but I am a stubby 5'7" Wink

Bill
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The desired effect is what you get when you improve your interplanetary funksmanship - George Clinton
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nickw
Big Brick Rider


Joined: 12 Aug 2010
Posts: 72
Location: Essex, VT USA

PostPosted: Sat Jul 27, 2013 7:22 pm    Post subject: Drilling clear windscreen Reply with quote

perhaps you are well aware of this, but when drilling clear perspex, acrylic or lexan clear plastics, you would be well advised to buy a high angle drill ground specifically for drilling clear plastics.

I have seen many shields drilled for various reasons by owners who think drilling holes is just drilling holes. If the cutting edges are not properly ground the exit side of the drilled hole will crack and create a place for other cracks to form making an very unsatisfactory hole and mayhap ruining a good shield. Using a drill ground to cut metals or wood will not give you a good result.
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"It's not what people know, it's that they know so much that just ain't so!" (Apologies to Will Rogers)
93 K1100LT
(2) 79 Suzuki GS850's (In limbo)
65 Triumph TR6S/C ( sold)
2009 Suzuki SV650
2009 Suzuki DL650
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ricketyclik



Joined: 26 Jul 2013
Posts: 9
Location: Canberra, Australia

PostPosted: Sun Jul 28, 2013 7:03 am    Post subject: Reply with quote

Thanks for the tips, especially your warning nickw. I went for my first good ride on it today, and found that turbulence is least when the screen is a bit down from full up, I guess because it's closer to me in that position. One of the after market suppliers mentions longer screen = closer to rider.

I've got a laminar lip from my K100RT, which I found raised the turbulent zone about an inch. The pictures on their site for the K1100LT LL look very similar to the RT one, so I might give that a go. Otherwise I guess it's a taller screen.

30% extra tire pressure from that at delivery and a tank of high octane petrol make the bike seem noticeably more powerful, and in particular more torquey than the K100 (I mentioned in my first post some disappointment in that area). I love the way you can gently roll on, even up hill, from about 2000 rpm!
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beemeerr11
Flying Brick Rider


Joined: 05 Mar 2006
Posts: 168

PostPosted: Sun Aug 04, 2013 11:17 pm    Post subject: Reply with quote

Hey Rickety,

I got a larger screen 2 inches taller through Munich Motocycles in WA, it stopped the head buffeting I use to get and works best lowered to about eye height as it also has a slight deflection on the screen, no buffeting what so ever.

On another note, I'll be doing the cooking at the Gluhwien Rally at Casurina Sands on the 18th of this month, bring your new ride and have a free breakfast and coffee, have a look at the following link.

Cheers
Lou

http://vvcmcc.org/gluhwein/



ricketyclik wrote:
Thanks for the tips, especially your warning nickw. I went for my first good ride on it today, and found that turbulence is least when the screen is a bit down from full up, I guess because it's closer to me in that position. One of the after market suppliers mentions longer screen = closer to rider.

I've got a laminar lip from my K100RT, which I found raised the turbulent zone about an inch. The pictures on their site for the K1100LT LL look very similar to the RT one, so I might give that a go. Otherwise I guess it's a taller screen.

30% extra tire pressure from that at delivery and a tank of high octane petrol make the bike seem noticeably more powerful, and in particular more torquey than the K100 (I mentioned in my first post some disappointment in that area). I love the way you can gently roll on, even up hill, from about 2000 rpm!
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ricketyclik



Joined: 26 Jul 2013
Posts: 9
Location: Canberra, Australia

PostPosted: Mon Aug 05, 2013 3:01 am    Post subject: Reply with quote

That's a very tempting offer Lou! I've put it in my diary and will do my best to be there!
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1995 K1100LT-P Dual Seat
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robleyd
Flying Brick Rider


Joined: 23 Jul 2009
Posts: 398
Location: Murbko, Australia

PostPosted: Mon Aug 05, 2013 5:18 am    Post subject: Reply with quote

http://www.eaglescreens.com.au/ in the west might also be worth a look - I have one on mine that is 4 inches higher than standard. Only thing is their screen is a couple of mm thinner than genuine so you may need to make a packer in the mounting points.

They don't have pictures on their site, but when I made an enquiry they sent me some pics of K LTs with their screens; Presumably they still do this.
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1996 K1100 LT
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552255
Mad Brick Rider


Joined: 13 Aug 2010
Posts: 94
Location: Nebraska

PostPosted: Fri Aug 09, 2013 8:55 am    Post subject: Reply with quote

The euro-cut screens are nice, you can look at the road over the top and still get the desired effect with air flow...you can also 'shim' the screen somewhat with rubber washers/bumpers to change or raise its angle on the mount, which will change air deflection, ie. shim at the back or top bolts of the screen increasing (towards upright) the angle and you'll get more effect.
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1997 K1100LT-SE
1996 K1100RS-SE
"Black & Silver Duo"
Lincoln, NE
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beemeerr11
Flying Brick Rider


Joined: 05 Mar 2006
Posts: 168

PostPosted: Mon Aug 19, 2013 6:24 pm    Post subject: Reply with quote

ricketyclik wrote:
That's a very tempting offer Lou! I've put it in my diary and will do my best to be there!


Hey ricketyclik,

Was that you on the weekend on the maroon LT with the cruise control setup?

Cheeers

Lou
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ricketyclik



Joined: 26 Jul 2013
Posts: 9
Location: Canberra, Australia

PostPosted: Mon Aug 19, 2013 9:10 pm    Post subject: Reply with quote

Nope, mine's white, ex-police.

I couldn't make it - we recently moved house and I'm on duty getting it "liveable" Wink
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