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TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => Project Custom Motobricks => Topic started by: treehouse99 on May 07, 2018, 08:08:07 AM

Title: Want to convert a K75S to a plain K75
Post by: treehouse99 on May 07, 2018, 08:08:07 AM
Wanted- top case (BMW type, BMW mount is on the bike, or as an alternate, a GIVI top case mount w/o the case ( I'll use a case that I already have
Thanks,
L.P.
treehouse99@optonline.net
845-538-3220, call or text is OK
I'm located in Pomona, N.Y.
Thanks!
Title: Want to convert a K75S to a plain K75
Post by: treehouse99 on May 07, 2018, 08:16:58 AM
WTB bar back/ risers for a K75S, prefer something where the original cables can remain....
Located in Pomona, N.Y. 10970
treehouse99@optonline.net
845-538-3220, call or text
Thanks!
Title: WTB Aeroflow windshield for a K75S (or tall alternate)
Post by: treehouse99 on May 07, 2018, 08:25:39 AM
WTB Aeroflow windshield for a K75S (or tall alternate)
The air blast is killing me!
I'm located in Pomona, N.Y. 10970
treehouse99@optonline.net
845-538-3220, call or text
Thanks!
Larry P.
Title: Re: WTB bar back/ risers for a K75S
Post by: jaxon on May 07, 2018, 11:10:21 AM
Just sayin...


I see you're looking for an aero screen and bar backs. Before you go on a hunt and fork over cash for a solution that may not work...

I have both and having both means the wind will be directed right into your face if you're 5'8" to 6' You'd likely need a laminar lip on the top of the screen. I'd use a shorter screen to put the wind on your chest or pass on the bar backs with a taller screen. That will place your upper body a little lower. I have a Shoei modular helmet and it whistles like crazy. Your screen would have to be stupidly high to solve this issue. The wind would be better on your chest and have a helmet that's really good at wind management.

So...
Lower screen with a bar back. Wind hits Chest
Higher screen without a bar back. Wind *might* go over your head.
Both: Get a laminar lip or equivalent. Wind *might* go over your head.

Maybe other people have a different experience or advice. This particular version of a bike isn't going to be easy to mitigate wind but that combination may not help.
Title: Re: WTB bar back/ risers for a K75S
Post by: Chaos on May 07, 2018, 11:30:08 AM
if you're looking for a slightly more comfortable position barbacks made a world of difference for me.  But as mentioned they can put your head in the middle of stock windshield turbulence.  I have a Aeroflow on my S and my ears are quite happy at speed with my Schuberth modular.  Try a wanted ad in ibmwr.org too, you'll probably need a longer brake hose from the master but the cables should be ok.
Title: Re: WTB bar back/ risers for a K75S
Post by: beemuker on May 07, 2018, 01:27:41 PM
Going through the same issue.  Mine came with barbacks and a standard screen.I'm 6'1" and am using a Shoei RF 1200. The wind noise is terrible , even with plugs. . I ordered a Gufftason 22" screen and it didn't hardly help Seems that BECAUSE OF THE ANGLE the screen would have to be crazy high to be effective.  I'm going to try taking the barbacks off to see if that helps. If not, thought about cutting down the 22' SCREEN to shorter than stock {12"] TO SEE IF THAT HELPS keep me in clean air. I'll keep you posted.
Title: Re: WTB bar back/ risers for a K75S
Post by: The Mighty Gryphon on May 07, 2018, 07:44:08 PM
This is my solution.  Seems to work okay.  Puts most of the wind on my chest.  Took about 4" off an old screen so I could save the nice one that came with the bike.
Title: Re: WTB bar back/ risers for a K75S
Post by: stokester on May 07, 2018, 08:35:01 PM
I must be of a particular size; 5' 11" with a long reach, because the stock K75S windscreen and bars work perfect for me.  Today's 250+ mile ride along the Blue Ridge Parkway and across central Virginia was in comfort with no buffeting.


YMMV
Title: Re: WTB bar back/ risers for a K75S
Post by: beemuker on May 08, 2018, 07:57:14 AM
Took the barbacks off and tried the stock and 23" screens. Much less comfortable without the barbacks and still lots of buffeting. put the barbacks back on and took the screen off. bettter, so I'm going to cut the tall screen to 12". Hoping it will give me cleaner air.
Title: Re: WTB bar back/ risers for a K75S
Post by: treehouse99 on May 08, 2018, 02:02:53 PM
Thanks for the ideas and advice...
At 66 years old, I finally have to admit sitting more upright is better for me.
That & the surprisingly loud wind noise w/ buffeting forces some kind of change.
6 feet tall and shrinking.
Title: Want to convert a K75S to a plain K75
Post by: treehouse99 on May 15, 2018, 09:01:53 AM
Want to convert a K75S to a plain K75...
The bike is mint w/ very low miles, but just doesn't suit me. Any one needing a pretty perfect S fairing assembly w/ lower fairing willing to trade the parts I need?
Title: Re: Want to convert a K75S to a plain K75
Post by: treehouse99 on May 15, 2018, 09:03:44 AM
Also willing to purchase the parts I need.
Thanks,
L.P.
treehouse99@optonline.net
845-538-3220 , call or text
Title: wtt mint K75S fairings for K75 headlight & cluster mounts
Post by: treehouse99 on May 15, 2018, 09:45:02 AM
wtt mint K75S fairings for K75 headlight & cluster mounts,
tough to ship, so hoping something local (NY/NJ/Conn area)
Title: Re: wtt mint K75S fairings for K75 headlight & cluster mounts
Post by: johnny on May 15, 2018, 09:49:55 AM
greetings...

looks more cherry than mint..

factory 2 fairy... couldnt happen to a more deserving specimen...

j o
Title: Re: wtt mint K75S fairings for K75 headlight & cluster mounts
Post by: treehouse99 on May 15, 2018, 09:59:11 AM
true, it's cherry.
just too sporty for my 67 year old frame.
ideally would like to purchase the conversion parts i need & save the s parts for next owner
Title: Re: wtt mint K75S fairings for K75 headlight & cluster mounts
Post by: johnny on May 15, 2018, 10:03:23 AM
greetings...

how do you think taking the fairing off and changing the headlight to round will effect your 67 year old frame...

j o
Title: Re: Want to convert a K75S to a plain K75
Post by: Chaos on May 15, 2018, 10:09:24 AM
You might want to consider barbacks and a taller windscreen, or even C bars and keep the fairing.  It does offer more protection than the unfaired bikes.  The barbacks and an Aeroflow work fine for me at 3 score and 5
Title: Re: wtt mint K75S fairings for K75 headlight & cluster mounts
Post by: jaxon on May 15, 2018, 11:10:11 AM
true, it's cherry.
just too sporty for my 67 year old frame.
ideally would like to purchase the conversion parts i need & save the s parts for next owner


You could rustle up bar backs, or maybe some bars that get close the the same position, maybe from a K75C. Taking the fairing off isn't going to do much for your riding position.
Title: Re: Want to convert a K75S to a plain K75
Post by: duckytran on May 15, 2018, 12:00:50 PM
What parts are you needing? I'm interested in the lower fairing.
Title: Re: wtt mint K75S fairings for K75 headlight & cluster mounts
Post by: alexg on May 15, 2018, 01:05:43 PM
Keep it pristine, looks so good in red.
Title: Re: wtt mint K75S fairings for K75 headlight & cluster mounts
Post by: johnny on May 15, 2018, 01:26:22 PM
greetings...

f-ing up a like new s... if you dont getts it at 67 years old... you never will...

i wish you much joy in your endeavour...

j o
Title: Re: Want to convert a K75S to a plain K75
Post by: K1300S on May 15, 2018, 01:49:49 PM
rather than stripping a very nice S, it would be much easier, and cheaper, to just buy a plain K75 and sell the S.  heck,you would probably make money in the deals....
Title: Re: Want to convert a K75S to a plain K75
Post by: The Mighty Gryphon on May 15, 2018, 02:08:06 PM
Here's a couple within a day's ride.
https://maine.craigslist.org/mcy/d/bmw-k75/6588162029.html
https://washingtondc.craigslist.org/nva/mcy/d/1994-bmw-k75/6583832643.html
The red one has a (very rare) Corbin low seat which would be perfect for an older rider. 
Title: Re: Want to convert a K75S to a plain K75
Post by: Martin on May 15, 2018, 03:05:26 PM
The 75s in my opinion is the pick of the litter. I am just short of your age and have no problem clocking up miles on mine. However it has had a few easily reversible modifications. With Jo's help the seat was lowered and repadded. I have a standard seat in the same colour as a spare. The standard bars have been rotated and moved back which involved extending the dash pad brackets. It's your choice to destroy, cut up or do whatever to a excellent survivor. However there are heaps of bricks out there that would more suitable for this. They are getting rare especially in that condition please find an alternative.
Regards Martin.
Title: Re: Want to convert a K75S to a plain K75
Post by: treehouse99 on May 15, 2018, 06:06:38 PM

Thanks everyone, I'll take all that advice into account.
I have no intention of destroying the 75s that I was so lucky to find. Just trying to make it more suitable for my riding style.
Title: Re: Want to convert a K75S to a plain K75
Post by: Laitch on May 15, 2018, 06:37:49 PM
Just trying to make it more suitable for my riding style.
Can you describe your style?
Title: Re: Want to convert a K75S to a plain K75
Post by: Laitch on May 15, 2018, 06:47:20 PM
Thanks everyone, I'll take all that advice into account.
Here's some more. http://www.motobrick.com/index.php/topic,9487.msg80173.html#msg80173
 (http://www.motobrick.com/index.php/topic,9487.msg80173.html#msg80173) and this as explanation. http://www.motobrick.com/index.php/topic,9487.msg80229.html#msg80229 (http://www.motobrick.com/index.php/topic,9487.msg80229.html#msg80229)
Title: Re: Want to convert a K75S to a plain K75
Post by: D.Bachtel on May 15, 2018, 07:12:12 PM
Is this more suitable to your style?


Don in Nipomo
Title: Re: Want to convert a K75S to a plain K75
Post by: D.Bachtel on May 15, 2018, 07:14:45 PM
other side..
Title: Re: wtt mint K75S fairings for K75 headlight & cluster mounts
Post by: stokester on May 15, 2018, 08:11:20 PM

You could rustle up bar backs, or maybe some bars that get close the the same position, maybe from a K75C. Taking the fairing off isn't going to do much for your riding position.
I'm not much younger myself and am lucky to find the K75S riding position near perfect for long days in the saddle. At about 6' with a 32" inseam with a very long reach this is the riding position I like so much I had to find another K75S. :riding:   As has been mentioned you may want to first try some K75C bars and then maybe some bar backs if you are looking for a more upright riding position and then a different windscreen if the buffeting is too much.

Title: Re: WTB bar back/ risers for a K75S
Post by: richrv9a on May 15, 2018, 08:27:19 PM
The "C" style bars are a good option instead of bar backs.
Title: Re: WTB bar back/ risers for a K75S
Post by: johnny on May 15, 2018, 08:40:14 PM
greetings...

if you gotts to have bar risers or bar backs i gotts 2 words for you...

rox risers... (https://www.google.com/search?q=rox+risers&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjQivSC_4jbAhUrc98KHcBqD8MQ_AUICygC&biw=994&bih=442)

j o
Title: Re: WTB bar back/ risers for a K75S
Post by: Martin on May 16, 2018, 02:57:49 AM
Have a look at this it might help in choosing bars. You can put in various model Bricks and change the parameters on the bars etc. http://cycle-ergo.com/
Regards Martin.
Title: Re: WTB bar back/ risers for a K75S
Post by: johnny on May 16, 2018, 07:55:36 AM
greetings...

may as well strip it now because 25 year old unridden seals and hoses will all fail as soon as it getts ridden some...

id have a flatbed wrecker with a moto dolley on call...

j o
Title: Re: WTB bar back/ risers for a K75S
Post by: Laitch on May 16, 2018, 08:34:13 AM
may as well strip it now . . . id have a flatbed wrecker with a moto dolley on call...
It's probably best just to sell it while it still can be asserted that it has been in professional storage recently.  :2thumbup:
Title: Re: Want to convert a K75S to a plain K75
Post by: K1300S on May 16, 2018, 08:15:16 PM
another nice option..

https://washingtondc.craigslist.org/nva/mcy/d/1994-bmw-k75/6583832643.html
Title: Re: WTB bar back/ risers for a K75S
Post by: beemuker on July 22, 2018, 01:09:53 PM
Just sayin...


I see you're looking for an aero screen and bar backs. Before you go on a hunt and fork over cash for a solution that may not work...

I have both and having both means the wind will be directed right into your face if you're 5'8" to 6' You'd likely need a laminar lip on the top of the screen. I'd use a shorter screen to put the wind on your chest or pass on the bar backs with a taller screen. That will place your upper body a little lower. I have a Shoei modular helmet and it whistles like crazy. Your screen would have to be stupidly high to solve this issue. The wind would be better on your chest and have a helmet that's really good at wind management.

So...
Lower screen with a bar back. Wind hits Chest
Higher screen without a bar back. Wind *might* go over your head.
Both: Get a laminar lip or equivalent. Wind *might* go over your head.

Maybe other people have a different experience or advice. This particular version of a bike isn't going to be easy to mitigate wind but that combination may not help.
Exactly. I have already been through this. I tried taking the barbacks off [uncomfortable for me] Got the tallest screen I could buy [ still wasn't tall enough] . Ended up cutting down the tall ws so It's shorter than stock, still wind noise, but the wind hits my chest, instead of the buffeting noise hitting me right at the helmet.
Title: Re: Want to convert a K75S to a plain K75
Post by: johnny on July 22, 2018, 02:05:40 PM
greetings...

needs one inch gurney flap wickerbill (https://en.m.wikipedia.org/wiki/Gurney_flap) on there...

j o
Title: Re: Want to convert a K75S to a plain K75
Post by: beemuker on July 22, 2018, 02:12:13 PM
greetings...

needs one inch gurney flap wickerbill on there...

j o
hmm, where might one get one, mine is long gone?
Title: Re: Want to convert a K75S to a plain K75
Post by: Adam M on July 22, 2018, 10:22:04 PM
Being 69 I read this thread with interest :).
Just buying a 75S and original position wouldn't suit me either.
Title: Re: Want to convert a K75S to a plain K75
Post by: Laitch on July 23, 2018, 01:54:28 AM
needs one inch gurney flap wickerbill (https://en.m.wikipedia.org/wiki/Gurney_flap) on there...
hmm, where might one get one, mine is long gone?
(http://www.motobrick.com/gallery/1/1601-230718015323.png)
Title: Re: Want to convert a K75S to a plain K75
Post by: Martin on July 23, 2018, 02:53:50 AM
Adam I have had my 75s for twenty years and as I've matured ( gotten older) I've progressively rotated the bars up and back. The last mod I did was to space the bars up 1" and back 1". I am quite comfortable with it and I don't foresee having to modify it further. Before you change over the bars try adjusting them. The clutch and throttle perches can also be adjusted for angle. Also have a look at this site http://cycle-ergo.com/
Regards Martin.