BMW K bikes (Bricks)

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1Back to top Go down   New member Empty New member on Wed Sep 09, 2020 11:08 am

charlesosprey

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I have acquired a 1985 K100 engine, that had previously fitted to a hovercraft. I intend to fit into a new hovercraft.

Charlie

    

2Back to top Go down   New member Empty Re: New member on Wed Sep 09, 2020 11:39 am

Arlina

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Welcome Charlie Smile


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New member Eu-log10  K1100RS/LT - R1200RT - R1100RS (RIP) - Cagiva SST 350 Ala Verde - K75LT project
    

3Back to top Go down   New member Empty Re: New member on Wed Sep 09, 2020 1:05 pm

mike d

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Welcome to the forum.

A number of years ago, we had an Irish member who had a K100 engined hovercraft.

Mike

    

4Back to top Go down   New member Empty Re: New member on Wed Sep 09, 2020 1:18 pm

92KK 84WW Olaf

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@mike d wrote:Welcome to the forum.

A number of years ago, we had an Irish member who had a K100 engined hovercraft.

Mike
Hover K100 and had some nice meet ups.

Crazy Frog had some ideas on it too..... https://www.k100-forum.com/t5929-hover-conversion


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1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011171 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 36,188  miles
    

5Back to top Go down   New member Empty Re: New member on Wed Sep 09, 2020 1:24 pm

92KK 84WW Olaf

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1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011171 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 36,188  miles
    

6Back to top Go down   New member Empty Re: New member on Wed Sep 09, 2020 2:01 pm

tinyspuds

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New member 177912


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

7Back to top Go down   New member Empty Re: New member on Wed Sep 09, 2020 5:48 pm

charlesosprey

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Hi all, not sure if this is the right place to post, but this is the hovercraft that the K100 is going in, I've set up on a frame, connected all the obvious cables fuel pump, water cooling and and exhaust, when I try to start it turns over for 1 second pauses for 2 seconds then turns over again, this repeats all the time I press the star button, If I disconnect the hall sensor the starter runs continuously with the button pressed, I'm at a loss.

    

8Back to top Go down   New member Empty Re: New member on Wed Sep 09, 2020 5:55 pm

Point-Seven-five

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Does the start button go directly to the coil of the start relay? 

Is the start button getting power from the battery?


__________________________________________________
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
    

9Back to top Go down   New member Empty Re: New member on Fri Sep 11, 2020 12:05 pm

charlesosprey

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@Point-Seven-five wrote:Does the start button go directly to the coil of the start relay? 

Is the start button getting power from the battery?
Yes the starter switch has a live supply and the relays operate, but the starter only runs properly when the hall sensor plug is disconnected

    

10Back to top Go down   New member Empty Re: New member on Fri Sep 11, 2020 10:46 pm

Point-Seven-five

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Okay, let's try this again.  Simple yes or no answers are best.  I'm not the sharpest tool in the drawer and never owned a hovercraft.  I don't have any background on your machine and the way it's wired.

Does the start button get power directly from the positive terminal of the battery? 

Is there a dedicated wire from the battery positive to the button?

Does the button have a dedicated wire that runs directly to the coil terminal on the start relay?

Does the other coil terminal on the start relay go directly to ground with it's own wire?

Do the Hall Sensors have any connection to the starter button wires?

Are there any start interlocks to prevent accidental starting?


__________________________________________________
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
    

11Back to top Go down   New member Empty Re: New member on Fri Sep 11, 2020 10:55 pm

Point-Seven-five

Point-Seven-five
Life time member
Life time member
Is there a wiring diagram of the machine that you can post here?


__________________________________________________
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
    

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