K100RS parked for four months outside in all weathers

[Laitch]

It will be next week before I can ride it though with the alternator situation.

Did you get a method to adjust it? You were seeking one.

[Filmcamera]

Nope, it was set on the highest preload - I managed to knock it down one notch bot no  more.  As soon as life returns to normal here I will find a C spanner - Costa Rica during semana santa is a ghost town, everything is shut.

[Laitch]

Costa Rica during semana santa is a ghost town, everything is shut.

Holy Cow!

[The Mighty Gryphon]

It's worth a try, not that I don't appreciate your negativity, Gryph.

Speaking of negativity, I had a rather negative experience pulling out my back trying to lift my lowered K75S onto it's stand when I first got it.

The cam action of the center stand loses it's mechanical advantage as the bike is lowered.  This combined with the additional distance you are required to raise the bike's 500+ pounds can indeed lead to some negativity.  Pulled muscles and even a right side flop.  Nice of you to notice.

[Laitch]

Nice of you to notice.

It's all part of the service. :giggles

[Filmcamera]

There is no way you could get it on the center stand now unless you were the hulk - the angle is just too small to be able to lever the bike up.  With my little ramp it is fine but taking it off the center stand it really crashes down pretty hard.

[Laitch]

With my little ramp it is fine but taking it off the center stand it really crashes down pretty hard.

I guess this is just one dog that won't hunt.

[Filmcamera]

I think you might be right, I am hoping not though, it cost me $240 inc tax and shipping etc.  I guess I might be able to sell it here though.

[Laitch]

I think you might be right, I am hoping not though, it cost me $240 inc tax and shipping etc.  I guess I might be able to sell it here though.

I meant the centerstand not the shock. I think this shock is going to work as well or better than the other and you are going to be more at ease at a standstill. I agree with Martin. Be on the lookout for a center stand that you'll eventually be able to modify satisfactorily.

Parking it on the side stand will need to do. Any temporary smoke from arising from starting in that situation will repel mosquitoes. Flats in tubeless tires can be plugged without dismounting them. Ride on!

[Filmcamera]

OK so let me test ride it when it is back on the road then sleeve the center stand to stop the issues and lower the front forks a little more to match.


Thanks for the advice.

[Laitch]

Analyze the center stand modification closely before undertaking it. Ensure that is is able to retract fully.

[The Dude]

It's nice having flat feet down at those stops.

The lowering may allow the center stand to ground when you do your next left hander with a dip at the apex and especially with your missus on board.It may be the stand's foot access extension which would trigger a rethink,hopefully.Like,just get rid of the stand.

[Martin]

When you pull up ask a couple of friendly locals to help you lift it onto the stand, tell them that you threw your back out cage fighting, or something equally impressive or intimidating.
Regards Martin.

[Filmcamera]

Finally got the alternator back today after three weeks.  I fitted it and fired the bike up.  So far so good, a steady 13.80 V. 


I was planning a test ride but then the heavens opened and that was that.  The rainy season is here in a big way. In the last three days it has rained every day after lunch like clockwork. 


Luckily the mornings are nice so I plan a quick burn tomorrow morning to test the alternator and the new shock.


The sunsets aren’t bad either


20170419_174626-1008x756.jpg (28.91 kB . 768x576 - viewed 482 times)

[Filmcamera]

I managed to sneak in a quick test ride before it starts raining today.


The new rear shock seems fine, it feels like the bike wants to fall into corners a little more but that may be my imagination, I am planning to lower the forks a little more in the triple tree to balance the new lower rear end so I will see how that effects the handling. I do think speed bumps are going to be an issue, especially two up but I am sure I can persuade the missus to stand up before we go over one!


With the alternator fixed the difference in the engine is amazing  before at higher revs, 5k+ it always felt a little rough and unhappy, now it screams up there begging for more.  Before I knew I found myself at 7 k in 3rd doing 80mph...

[jc55]

I had no prob putting the bike on the stand with that shock. I step on the stand with my left foot, use my right hand on the handle, left hand on the frame and pop the bike up. You can also turn the shock around to place the pink sticker on the inside

[Filmcamera]

Yeah JC yours is a monolever mine is a paralever - the standard shock length on the paralevers is more, 15.13 inches compared to 13.75 inches for a monolever. so going to a 13.2 inch is a big difference on mine.


https://forums.bmwmoa.org/showthread.php?19881-Correct-Length-for-91-K100RS-(4-valve)-rear-shock


My bad for not checking, seems to ride ok, I just cannot easily use the center stand.

[jc55]

Ah, I see. Thanks for educating me. I hope it works out.

[Filmcamera]

OK I seriously need to stop reading the threads on this forum.  It seems every time I read about an issue happening to someone it happens to me soon after.


Point in case...


This morning it was a beautiful fresh day and so I decided to take my new shock for a proper test on some twisties on a short ride to the local town of Puriscal.


The bike was handing great and with a correctly working alternator so was the engine.


As I got more in to I started pushing more until, it was all high revving second and third gear turns.


On one straight bit I hit about 8500 revs in second and all of a sudden it felt like I had momentarily pulled the clutch then dumped it again. I shifted into third and everything was fine. I carried on riding in a spirited way and the next time I down shifted to second and accelerated hard I got the same thing again.  I eased off and left the bike in third for 15 mins or so then gently dropped into second and accelerated very gently - same thing happened again.


It seems I have caught whatever ailed Motorhobo.


So for now first straight to third only while I hit up Motorhobo and see if he has worked out the issue.


Sigh - I was having SO much fun!!

[mw074]

That's some kind of VooDoo power of suggestion.

[Filmcamera]

Does anyone know if the gearbox from a K100 RS 2v fits my 16v? Or if a K1100 RS gearbox fits mine?  I have found both for sale but want to make sure one or the other is compatible.

[Laitch]

Does anyone know if the gearbox from a K100 RS 2v fits my 16v? Or if a K1100 RS gearbox fits mine? 

Somebody always knows. The crux is whether the transmission has mounting points for the forward end of the final drive rod that attaches to the transmission. Read this. Don't be put off by the title.

[Filmcamera]

Right I see, yeah looking at the three different transmissions I found on ebay only the K1100 one seems to have the tangs for the paralever. Even the one listed as a 1992 K100RS does not appear to have the paralever tangs I need.

The other option is to find out if the bits inside the tranny are the same and then just swap the innards from the new one into my existing housing,

Thanks Laitch

[Laitch]

Before you run out and buy that transmission, it would be helpful to get from somebody who rides at high speed a description of what it feels like when a rev limiter kicks on. By your admission you were only 150 revs from that happening and that's easily within the margin of error for one of these tachs. The next point I'd like to understand is if this limiter is an electronic function, is it possible for it to malfunction then create performance problems at lower speed.

I'd be tempted to disconnect and reconnect the battery and hope for a reset, magical thinker that I am. :giggles

[Filmcamera]

Positive thinking! I like it. I shall certainly disconnect and reconnect the battery just in case.


However since I had the same issue on 2nd at lower revs under gentle acceleration and only in 2nd not in 1st, 3rd or 4th no matter how hard I was accelerating I fear the worst.


The whole will it fit or won`t it issue has already got super complicated. From what I am reading it is possible that only the tranny from another K100 RS 16v will fit, not the K100 2v or the K1100 which would be a major pain.


Now I am trying to determine if the inside are same by going part by part....