Abrupt throttle for 2005 Brutale; Mirrors? - MVAgusta.net
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post #1 of 17 (permalink) Old 04-13-2010, 08:33 PM Thread Starter
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Abrupt throttle for 2005 Brutale; Mirrors?

Greetings. My first post.

Just bought a slightly used 05 Brutale S. This bike is a dream. Despite many years of riding, I don't ever recall being so excited about a bike! I especially like the bike's very compact dimensions. Fits my frame perfectly.

Now that I've had about 3 weekends of riding I'm starting to notice a few flaws. Perhaps the readers of this post can suggest a remedy or two.

The first issue is its very abrupt mid-throttle, perhaps at around +20 deg. I find it more sensitive than any other FI bikes I've owned. I believe this is exaggerated due to the engine's flywheel. I wonder if there is an easy fix I can try. I acknowledge that installing a Power Commander is an obvious choice.

The second issue its rather useless mirrors. The rubber isolation in its base makes their vibration worse, I think. Any recommendations would be appreciated.

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post #2 of 17 (permalink) Old 04-13-2010, 08:59 PM
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Welcome Panaray and congratulations on your purchase !!

Can't advise on the mid-throttle...but the bike does launch above 6000rpm ;-)

Replace stock mirrors with Bar-ends (Rizoma's or alike), fixes vribration and does allow you to actually see what's behind you.

Cheers

Tim
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post #3 of 17 (permalink) Old 04-13-2010, 09:21 PM
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Congrats on your purchase.

I recently had my bike in for a similar issue with the throttle & the guys were able to almost completely fix the issue by adjusting the throttle settings (I'm the first to acknowledge that I have no technical knowledge). Whatever they did, it can be improved dramatically.
I've just ordered the Rizoma Limit Naked mirrors for the same reasons, can't wit to get them.

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post #4 of 17 (permalink) Old 04-13-2010, 09:21 PM
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I picked up crg bar end mirrors from one of the site sponsors motivation they work great, along with their bar ends stopped vibration.
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post #5 of 17 (permalink) Old 04-13-2010, 09:22 PM
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Thumbs up Same old thing

Try Chris from X-bikes www.xbikes.cc for ECU and loosen the spring mount inside the mirror stalk a bit, i found that helped quite a bit.
Cheers

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post #6 of 17 (permalink) Old 04-13-2010, 09:29 PM
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Bar end mirrors are not the only solution. I've got Rizoma limit on mine which worked really well.

Check earlier thread http://www.mvagusta.net/forum/showthread.php?t=29232
"Mirrors...not again" of last month. LOts of info in that.

Good luck

Now riding KTM 1290SA; previously BMW K1200R, Brute 910R, Brute750S, BMWR1150GS, Honda VFR800, YamahaXJ650, Honda400/4, HondaCB360 and more
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post #7 of 17 (permalink) Old 04-14-2010, 08:12 PM Thread Starter
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Many thanks for the mirror suggestions. Dan_t, additional info would be appreciated. If it was simily a throttle adjustment, then perhaps I can figure it out.

BTW--anybody find the engine buzzy between 6k and 8k?
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post #8 of 17 (permalink) Old 04-15-2010, 01:20 AM
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buzzy is probably your air intake vents below your tank, put hand on them when riding to see for sure
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post #9 of 17 (permalink) Old 04-15-2010, 02:42 AM
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Well, this is along the lines of what Steve at Motorcycle Weaponry told me about the throttle........
There is a sensor that determines how much you have 'twisted' it & adjusts the fuel injected into the engine accordingly.
Apparently there is a bit of play in this, so the effect is that when you roll on the throttle, the system does not read that you have actually moved the throttle until you have rolled it on some more & by that time, it reads "crap! the throttle is on, I should go now!!!" resulting in an off or on situation, with very little in between.
The adjustment was made so that in a neutral position, the throttle sensor is sitting at the very end of that travel / play, meaning that with the smallest roll of your wrist, the bike acknowledges that you want to go somewhere.

I've probably got that whole thing completely wrong - as stated earlier, I'm no techy. Either way, it now works wonderfully, it's a blast to ride now & I'm not so concerned about throwing myself off mid corner as I try to power out.

I hope this helps.
If you really need to know what they did, you could always contact them, or send them an email, they're great guys; http://www.motorcycleweaponry.com.au/

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post #10 of 17 (permalink) Old 04-15-2010, 03:17 AM
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Quote:
Originally Posted by dan_t View Post
Well, this is along the lines of what Steve at Motorcycle Weaponry told me about the throttle........
There is a sensor that determines how much you have 'twisted' it & adjusts the fuel injected into the engine accordingly.
Apparently there is a bit of play in this, so the effect is that when you roll on the throttle, the system does not read that you have actually moved the throttle until you have rolled it on some more & by that time, it reads "crap! the throttle is on, I should go now!!!" resulting in an off or on situation, with very little in between.
The adjustment was made so that in a neutral position, the throttle sensor is sitting at the very end of that travel / play, meaning that with the smallest roll of your wrist, the bike acknowledges that you want to go somewhere.

I've probably got that whole thing completely wrong - as stated earlier, I'm no techy. Either way, it now works wonderfully, it's a blast to ride now & I'm not so concerned about throwing myself off mid corner as I try to power out.

I hope this helps.
If you really need to know what they did, you could always contact them, or send them an email, they're great guys; http://www.motorcycleweaponry.com.au/
I'll second your last comment dan_t.
M Weaponry did a great job on my bike too. Throttle is now almost civilised (although not quite, as you want to retain the Brute in the Brutale) as are suspensions. None of the stuttering on and off stuff any more. Even commuting in traffic is pure joy.

M

Now riding KTM 1290SA; previously BMW K1200R, Brute 910R, Brute750S, BMWR1150GS, Honda VFR800, YamahaXJ650, Honda400/4, HondaCB360 and more
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