Quick Action Throttle

[Rasher]

Was looking on E-Bay at the link posted in some other topic and enquired about post to the UK.

I was given a link to the Website "In English", which appears to be a babelfish style translation. I am still unsure exactly what to order or how to fit it though.

Looking around the site it appears you have to cut something or other on the bike, so it may be a one-way conversion which has put me off a bit.

They also seem to want some bits in exchange so I think your off the road while you wait for them to send you new parts (which also adds to the cost even if you can return to stock)

http://www.schwabenmax.de/Navigation/Hauptnavigation BMW R1200GSST English.htm

 

[JohnnyBoxer]

Why bother.....................the GS is a lazy oldschool twin, with oodles of torque

So I think a fast action throttle would kinda defeat the object and they only rev to 7000rpm, not 12000rpm

 

[GS TRV]

as he said - fine on a track bike but a total waste of time on a lardy underpowered trail bike.

 

[DavidJames]

Quick action throttle on a slow action bike

 

[Wapping]

Slap an HP2 Sport engine in it.

Easier still, buy one.....

 

[(RIP) Miff]

In the series state it is not possible the gas handle of aforementioned motorcycles with a turn the wrist without get a firmer grip to full throttle operate by zero!


A quick action throttle would be a great idea. At least you could open the throttle fully without having to move your hand round the throttle grip. It's one thing that BM should copy from the Japs..

 

[bmwrover]

I have one fitted on my 1200GSA and can higly recommend it.
As Miff said, in standard form its a too long way to full throttle.

And after the conversion, its not ON/OFF but still very managable.

Bought mine from www.boxerdesign.de and if I remember correctly someone else in this fine forum wrote about it before.

Apparently there are two or three BMW throttle bodies in use, and one cannot say which one was fitted to which bike, so its a bit tedious to select the correct Quick Action Throttle.

 

[Deleted account 211025001]

.........
A quick action throttle would be a great idea. At least you could open the throttle fully without having to move your hand round the throttle grip. It's one thing that BM should copy from the Japs..

Absobloodylutely

Andres

 

[st247]

+1 for the Boxer Designs throttle cover, well worth the hassle in getting the correct part.

Linky to my original write up about it.

 

[2 wheel humvee]

+1 for the Boxer Designs throttle cover, well worth the hassle in getting the correct part.

Linky to my original write up about it.

I've got the boxer design one,the blurb said it reduces the travel at the throttle by around 25% which sounds about right, for those few occasions where you might want full throttle it makes it easier to access without feeling the need to have a 2nd go at the throttle twistgrip, in normal riding it's easy enough to modulate so no issues there. The cover is a bit of a lash up though, I have what looks like the 2nd cover st47 mentions in his post, it doesn't match the colour and texture of the plastic used on the existing throttle housing very well and sits proud in one area, it does the job but I'm embarrassed at how much I paid for it
The boxer engine's rev ceiling is irrelevant,as is the bike's intended use and engine layout, the travel at the throttle twist grip is too long for some, this provides a cure albeit at a price. my 0.02c

 

[DING-DONG]

Was looking on E-Bay at the link posted in some other topic.

Hi rasher, the other topic being mine! you should have just asked me! the link on ebay is for the quickaction insert or as the lister states gas handle clip, they will provide the handle shell and the screw with rubber ring on exchange or 10 euro extra(you can use your original but you need to mod and if you have not done this b4 its way easy to pay the 10 euro) pay the extra 10 euro that way if you sell bike you can put original item back on and sell the quickaction, i sold my last one for a k12r for more than i paid and i had one on my f800gs and now on my 2010 12gs-turd there brill.

so what you want is:
Gas handle clip, clutch head screw, rubber ring, handle shell new, there's no cutton its so simple to fit takes all of 5mins...

Also another gain you will be able to hit the cancel button without having to come off throttle as well.

Dave

 

[Rasher]

Why bother.....................the GS is a lazy oldschool twin, with oodles of torque

So I think a fast action throttle would kinda defeat the object and they only rev to 7000rpm, not 12000rpm

Your missing the point, to access the torque of the GS you need to rotate your wrist beyond breaking point, unlike most other bikes using a comfortable amount of twist and go, well doesn't go.

I am used to bikes where 50% throttle gets you 80% of the available power, and at low-midrange probably gives as much as you woul get if you take that double-twist, the GS however feels flat as a pancake when ridden like this, when i first test rode one I hated it as I thought it had no more power beyind 5k and just revved slowly and painfully, until I saw this in a mag and took a second test ride - having first snapped my wrist in 3 places so I could operate the throttle properly:

See how most bikes give about 60% of peak power at 40% throttle, and in the mid range do even better, obtaining about 60%-70% at the 6k mark.

The two Italian bikes produce 46BHP at 6k on 40% throttle and the BMW a miserly 28BHP - the same as it had at 4k. Yet on full throttle it has 86BHP here, well above the other two, so 40% throttle provide 30% of power for the BMW in the midrange.

Beyond 6K without a large handful the thing just dies a short and pathetic death dropping below 20BHP after 7k, and with all that weight probably becoming slower than a CG125 with a knackered spark plug. The quick action throttle is probably more useful on a GS than any other motorcycle on the planet.

In fact I wonder how many owners have never even discovered more than half the bikes power output

Next time your out grab a proper handful, you may be surprised!

 

[Pukmeister]

Your missing the point.............The quick action throttle is probably more useful on a GS than any other motorcycle on the planet.

In fact I wonder how many owners have never even discovered more than half the bikes power output

Next time your out grab a proper handful, you may be surprised!

The GS was meant to be an offroad-capable bike. At a guess I'd say thats why the throttle action is more than a little 'progressive', to prevent the engine delivering overwhelming response from small openings when riding trails and loose surfaces.

 

[JohnnyBoxer]

I've done 100k+miles on oilhead GS's, Rasher

Worked for me so far, but if others think it's worthwhile then go for it

 

[Rasher]

I would buy one right away if someone made one that did not require sending bits of your bike away first or cutting bits of your bike.

If anyone knows of a better alternative let me know

 

[DING-DONG]

I would buy one right away if someone made one that did not require sending bits of your bike away first or cutting bits of your bike.

There is no need to send bits, the seller will give you the option to buy the cover and screw for 10 euro and you do NOT NEED TO CUT any part of your bike ..and if you want a detailed picture of the item fitted just ask..


Dave

 

[Rasher]

There is no need to send bits, the seller will give you the option to buy the cover and screw for 10 euro and you do NOT NEED TO CUT any part of your bike ..and if you want a detailed picture of the item fitted just ask..


Dave

Sweet, may have to order one then, on the website there is a picture of something being cut with a knife.

I did ask if any permanant changes had to be made to the bike, how long it would take to exchange bits etc but did not get a reply I could understand, I think both questions and answers were lost in translation.


Can you tell me what they call the 10 euro part, and is this an easy job to do, I don't want to pay Mr BMW £100 an hour to do it, or set up idle / fuelling or something else afterwards.

 

[DING-DONG]

Ayup rasher, nape i never cut anything on my 2010 12gs or on my k12r / f800gs the 10 euro part is the cover for the throttle housing and the screw with washer, if you used your existing than yes you would need to trim and its easy but if you have not done this b4 just buy the bits and save your originals.

When you hit the buy it now b4 you pay tell em you want the extra bits and what year bike you have and they will adjust payment, regarding fitting well i dont do german, but when the bits arrived and i removed my existing throttle housing cover you'll see where it fits its pish easy

Ill take a pic for you 2mo and post when i get home..

 

[Rasher]

Thanks, will get order in this weekend

 

[Cooky]

Good thread - have ordered myself a boxerdesign one. Those graphs of Rasher's make interesting reading. Doing a couple of track days later this year.