BMW K bikes (Bricks)

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1Back to top Go down   Valve stems  Empty Valve stems Mon Mar 21, 2016 11:27 am

duck

duck
Life time member
Life time member
The next time you swap in a new tire it is probably a good idea to replace the old rubber valve stem with a new metal one. I use BikeMaster 151402s on my 3-spokes.


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
98 Taxi Cab K1200RS
14 K1600GT
http://www.ClassicKBikes.com
    

2Back to top Go down   Valve stems  Empty Re: Valve stems Mon Mar 21, 2016 4:24 pm

robmack

robmack
Life time member
Life time member
Good idea, Duck. Also, for those contemplating 90° stems for easier access, they do not work on the front wheel because of interference with the brake calipers. I have a 90° stem mounted on my rear wheel but found that it no less accessible than a straight valve.


__________________________________________________
Robert
1987 K75 @k75retro.blogspot.ca
http://k75retro.blogspot.ca/
    

3Back to top Go down   Valve stems  Empty Re: Valve stems Mon Mar 21, 2016 8:18 pm

RicK G

RicK G
admin
admin
I have 90° stems on both wheels and have had no problems and dealing with the 305mm discs on a K1100 is much easier and on the rear wheel I have angled the stem back about 45° which makes a access a bit easier.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 2004 K1200GT 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

4Back to top Go down   Valve stems  Empty Re: Valve stems Mon Mar 21, 2016 8:21 pm

Point-Seven-five

Point-Seven-five
Life time member
Life time member
Rick, I'll be putting new rubber on My K100RS this year and I am seriously thinking about 90 degree stems.  Do you have a link to the ones you are using?


__________________________________________________
Present:
1994 K75RT
1991 K100RS
1988 K100RS SE

Past:
1994 BMW K75S
1992 BMW K100RS
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

5Back to top Go down   Valve stems  Empty Re: Valve stems Mon Mar 21, 2016 9:02 pm

RicK G

RicK G
admin
admin
This is the guy I got them from in Brisbane. I bought 8 of them a few years ago and progressivly fitted them to all the bikes. I cant imagine they were anything special, they look to be the same as the stems I bought but 2mm could make the difference. You could fit them so they are angled a bit for clearance.
http://www.ebay.com.au/itm/MOTORCYCLE-TYRE-PUNCTURE-REPAIR-CO2-INFLATOR-KIT-WITH-2-x-90-deg-VALVE-STEMS-/150924505778?hash=item2323cd32b2:m:mr6IUmmcv6eaKY7UYWHfapQ
I didn't get a repair kit but it was the only link I could find.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 2004 K1200GT 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

6Back to top Go down   Valve stems  Empty Re: Valve stems Tue Mar 22, 2016 12:26 am

robmack

robmack
Life time member
Life time member
Rick, I see the stems that you referenced above have much shorter shanks than the ones I had fitted. That must make all the difference. My tire specialist was unable to find much selection in 90° stems so I was stuck with what I could get.


__________________________________________________
Robert
1987 K75 @k75retro.blogspot.ca
http://k75retro.blogspot.ca/
    

7Back to top Go down   Valve stems  Empty Re: Valve stems Tue Mar 22, 2016 12:43 am

Point-Seven-five

Point-Seven-five
Life time member
Life time member
Rick, I found them and bought a pair on eBay.  $11.25 + free shipping.


__________________________________________________
Present:
1994 K75RT
1991 K100RS
1988 K100RS SE

Past:
1994 BMW K75S
1992 BMW K100RS
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

8Back to top Go down   Valve stems  Empty Re: Valve stems Sun Nov 07, 2021 6:51 am

tinyspuds

tinyspuds
Life time member
Life time member
Bit of a generic one guys n gals. I’ve just encountered my first permanently mounted 90o stem. It’s mounted in line with the rotation of the wheel, so the business end is facing the rim and provides zero access. The obvious answer is that it needs to rotate to face the outside of the wheel dish. Do they do this or is this one just mis installed?
Done lots of searching but cant find anything about them rotating/sticking.


__________________________________________________
1985 BMW K100RT + Hedingham HUB and LL’s. VIN 0028106. (Not blind to the irony of an April 1 production date).
1986 K100RS in boxes. VIN 0141918.
1954 Royal Enfield 350 Bullet. Original.
    

9Back to top Go down   Valve stems  Empty Re: Valve stems Sun Nov 07, 2021 7:10 pm

Laitch

Laitch
Life time member
Life time member
@tinyspuds wrote:The obvious answer is that it needs to rotate to face the outside of the wheel dish. Do they do this or is this one just mis installed?
They do this. 
Valve stems  18663110 Valve stems  Images10 Valve stems  Scree175 Valve stems  Scree176
Maybe somebody was asleep at the wheel. Smile
The tire bead on one side—at least—will need to be released to get in there and rectify the situation. Sometime the opposite side needs to be pried over the rim to make more room for the adjustment.


__________________________________________________
1995 K75 81,000 miles
Valve stems  Usa-lo10
    

10Back to top Go down   Valve stems  Empty Re: Valve stems Mon Nov 08, 2021 1:39 am

tinyspuds

tinyspuds
Life time member
Life time member
Thanks Laitch (which doesn’t mean the pun is forgiven).


__________________________________________________
1985 BMW K100RT + Hedingham HUB and LL’s. VIN 0028106. (Not blind to the irony of an April 1 production date).
1986 K100RS in boxes. VIN 0141918.
1954 Royal Enfield 350 Bullet. Original.
    

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