R1200S throttle action

f90x · Post by **f90x** » Mon Feb 11, 2013 7:51 pm

So i've had the bike for about 4000 miles and it's great but for one thing. that bloody horrible eccentric throttle arrangement. now, i know it has been talked about before but the conversation has just fizzled out and i really need to get a fix for this otherwise it shall have to go. my right wrist is a bit week and i cannot handle a whole day out on the bike having to wind the throttle around at least a third more than any other bike that i have ever owned as by the end of the day i am in a great deal of pain and almost unable to ride home. This is a big problem as i can do 400+ miles in a day on the 1100 with no discomfort. I know that Gus is looking into a fix but I also remember someone on here telling about a BMW dealer who took some bits out of his throttle bodies and making the throttle action much shorter. (i've searched like crazy but cannot find the post) If i can get this done then the bike stays as apart from this it is a cracking bit of kit. If i can't then it goes. Anyone got any info?

Cheers
Steve

Herb · Post by **Herb** » Mon Feb 11, 2013 8:00 pm

I think you mean this one.

viewtopic.php?t=14669&highlight=throttle+eccentric

I never did understand that mod, but I can't see it doing anything much, as it does not remove the eccentric.

f90x · Post by **f90x** » Mon Feb 11, 2013 8:11 pm

cheers herb. looks like a dead end unless someone else has any ideas. it would appear that was the last post by congoman as well. could be a guzzi griso for me in the summer then. shame. c'mon team, someone must have a result

Herb · Post by **Herb** » Mon Feb 11, 2013 8:16 pm

Stunning looking bike the Griso, especially with a nice aftermarket exhaust.

There are options to either remove the cam or fit a short pull throttle, but no one here, or on Pelican seems to have fitted them.

You could be the guinea pig?

Herb · Post by **Herb** » Mon Feb 11, 2013 9:03 pm

Found one.

http://www.boxer-design.de/en/detail.asp?ID=11&pID=1141

gus · Post by **gus** » Mon Feb 11, 2013 9:12 pm

Hi all
I may have a solution. I,m trying to order the parts. I will post my findings.
Gus

gus · Post by **gus** » Mon Feb 11, 2013 9:17 pm

Hi
Herb has provided a link to the same product I was trying to order from somewhere else. Bonus is , that's cheaper. I will speak to some tuners in Germany the weekend and see what they are doing or using. If good I will order the part this weekend and see what's what.
Gus

f90x · Post by **f90x** » Mon Feb 11, 2013 9:41 pm

http://www.boxer-design.de/en/detail.asp?ID=11&pID=1141

THAT'S IT!!! i'm working in Paris until the middle of April so i won't order the bits until you know what's what Gus as i can't get near my bike until then and i don't want to drop £50 on it, have it sitting dormant and then find it doesn't work two months later. i look forward to the results.

Cheers fellas, i had been looking on the likes of pelican as well and although people had been talking about the problem, no-one appeared to have a result there either.

Herb · Post by **Herb** » Mon Feb 11, 2013 9:47 pm

f90x wrote:THAT'S IT!!!

Cheers fellas, i had been looking on the likes of pelican as well and although people had been talking about the problem, no-one appeared to have a result there either.

Seems to be a characteristic of these bikes that everyone complains about, but then just lives with.

f90x · Post by **f90x** » Mon Feb 11, 2013 9:51 pm

Herb wrote:
f90x wrote:THAT'S IT!!!

Cheers fellas, i had been looking on the likes of pelican as well and although people had been talking about the problem, no-one appeared to have a result there either.
Seems to be a characteristic of these bikes that everyone complains about, but then just lives with.

i just can't live with it herb. if this doesn't work it really will have to go. i was in agony coming back from wales last year. this will mean i keep it for at least another year if not more. i do fancy those griso's though

StreetFlatTwin · Post by **StreetFlatTwin** » Mon Feb 11, 2013 10:25 pm

I found this on my last bike (street triple) and was an easy fix swapping the throttle tube from another bike in the range (speed triple 1050). This new from the triumph dealer was £9 and was swapped in 5 minutes.

Anybody know if another BMW doesn't use the ecentric throttle say the GS or R and it could be possible to swap them over??

(Typical tight scots and mind at work!!!!)

tanneman · Post by **tanneman** » Tue Feb 12, 2013 5:25 am

HP2 throttle mod?

Herb · Post by **Herb** » Tue Feb 12, 2013 7:21 am

I have not been able to find out for sure but I think the eccentric is in the splitter box. So modifications at the throttle may shorten the travel but you will still have the non linear throttle, so the device linked to is probably best for F90x and the bike will behave as BMW intended, albeit with a quick action throttle.

I have read before that the megamoto has the same arrangement of throttle cables etc, unlike the standard GS, as the 1200s but without the eccentric. Hence if you can live with the throttle rotation but not the non linearity, this may be the route to investigate.

David_S_Walker · Post by **David_S_Walker** » Tue Feb 12, 2013 7:34 am

f90x wrote:
Herb wrote:
f90x wrote:THAT'S IT!!!

Cheers fellas, i had been looking on the likes of pelican as well and although people had been talking about the problem, no-one appeared to have a result there either.
Seems to be a characteristic of these bikes that everyone complains about, but then just lives with.
i just can't live with it herb. if this doesn't work it really will have to go. i was in agony coming back from wales last year. this will mean i keep it for at least another year if not more. i do fancy those griso's though

All,

I fitted one of these a few months ago having had one on my previous BMW K1300S. Expensive but transforms it. No second bite of the throttle now needed to get it fully open. On smooth movement.

Do follow the instructions fully though or it won't work. You have to cut off a small bit of your throttle tube to let it sit properly but it is all in the instructions.

Wouldn't be without it!

Currently also on eBay - Item number 170986494997 although the seller is happy to supply direct

Hope that helps

Best regards,

David

peter f · Post by **peter f** » Tue Feb 12, 2013 1:29 pm

Herb wrote:I have not been able to find out for sure but I think the eccentric is in the splitter box. So modifications at the throttle may shorten the travel but you will still have the non linear throttle

Splitter has nothing to do: the (ugly and pointless) eccentric is in the TB's "pulley" thing (2 things actually).

Make a small test: knee near by the right TB and twist slowly the throttle: observe how the cable push/pull motion is translated into a "not linear" rotational action on your butterfly: these things are not moving (i.e. rotating) at all at first and then start following your input. German sense of humor that one ? (or a total ignorance about what a sports bike is).

But this mod mentioned is better than nothing.

Of course the ultimate solution is to fabricate a proper linear action TB "pulley" (not exactly cheap that one).