I recently became the owner of a first gen Busa. I noticed right away that the brakes are practically non existent. One unnerving thing that happens is that the throttle tends to engage slightly when applying the brakes. Unless I completing list up my plan from the throttle and use two fingers to brake, essentially hovering my palm above the throttle. Braking seems to be pre solid at best and quite an effort having to gingerly avoid engaging the throttle and braking a the same time. I e owned several bikes from Harley’s to sport bikes and I e never experience this finicky ness. Has anyone else experienced this?
Throttle engages with front brake
- Thread starter Fazer
- Start date
Sounds like adjustment of throttle cable free play needs doing… front brakes need servicing… full caliper rebuild and master cylinder stripped and rebuilt, new sintered HH front pads and new braided brake hoses if not already fitted.
You have a near 20 year old bike, it needs work to bring it back to how it use to be.
Make a list of every problem area on your bike and address each area in a prioritised way.
If you can find a good technician locally, get him to go over the bike and identify issues needing attention asap.
It’s almost impossible to accurately diagnose faults over a forum, if you can, upload pics or preferably video footage of your bike and it’s problems you’ve detected, then we will be able to give better advice.
You have a near 20 year old bike, it needs work to bring it back to how it use to be.
Make a list of every problem area on your bike and address each area in a prioritised way.
If you can find a good technician locally, get him to go over the bike and identify issues needing attention asap.
It’s almost impossible to accurately diagnose faults over a forum, if you can, upload pics or preferably video footage of your bike and it’s problems you’ve detected, then we will be able to give better advice.
Thank you! That’s a great point about throttle freeplay adjustment. That will most certainly give me some wiggle room to avoid accidental engagement. Yes it actually already has steel braided brake lines , but all of the other things you suggested are def in order. Thank you!
You’re welcome, I’m a retired bike/car mechanic and I know a few things about bike set up.
Welcome along!
The search function on this site is worth using, there’s a wealth of tech info here re Busas.
Welcome...
What you are describing is not normal for a Hayabusa.......just like @Kiwi Rider points out, maintenance items are always awaiting attention on an older bike...
If you plan on sticking around, why not trot over to the new owners thread and introduce your bike and yourself.....
What you are describing is not normal for a Hayabusa.......just like @Kiwi Rider points out, maintenance items are always awaiting attention on an older bike...
If you plan on sticking around, why not trot over to the new owners thread and introduce your bike and yourself.....
". . . a few things"
He's forgotten more than most of us will ever know.
Alzheimers is a helluva thing…". . . a few things"
OP: "use two fingers to brake, essentially hovering my palm above the throttle."
however it's done, a lot of force must be applied in equal measure to the throttle grip when you pull the brake lever. Typically this force keeps the throttle closed, for me at least.
Mythos
Registered
Something is causing the throttle cable to stretch when you apply the brake. I'd look at the routing of the cables and lines. Maybe the brake lines move a little when the pressure inside increases from applying the brake. If this happens, the brake line might press against the throttle cable causing a slight opening of the throttle. You must have your throttle cables adjusted to no play at all and if you ask me, that is best. I have my 08 busa's throttle cables adjusted this way and I have no problems with any unwanted throttle opening even when turning the steering. Maybe your throttle cable is adjusted too tight or the return cable is too loose? Something is causing it to stretch enough that you're noticing an increase in throttle without touching the throttle grip.
The throttle and brake are not interfering with one another.
Read where it says unless the op lifts his hand off of the throttle and pulls the brakes.
Meaning that any pressure on the throttle, or closing it is causing it to hang...independent of the brake.
A hydraulic brake line is nowhere near the throttle cable out of plain site on the bar either.
The old Kiwi already told him, the throttle cable is simply out of adjustment.
Likely the 2 plastic adjuster wheels near the throttle tube under the rubber boots, or the 2 aluminum wheels at the throttle bodies, if someone has moved them, as well as the fast idle cable adjustment.
And Gen1 brakes suck regardless.
Read where it says unless the op lifts his hand off of the throttle and pulls the brakes.
Meaning that any pressure on the throttle, or closing it is causing it to hang...independent of the brake.
A hydraulic brake line is nowhere near the throttle cable out of plain site on the bar either.
The old Kiwi already told him, the throttle cable is simply out of adjustment.
Likely the 2 plastic adjuster wheels near the throttle tube under the rubber boots, or the 2 aluminum wheels at the throttle bodies, if someone has moved them, as well as the fast idle cable adjustment.
And Gen1 brakes suck regardless.
I've seen some aftermarket grips slightly stick slightly as they can contact the end bar weight or control switch....
@Fazer if you have a moment, shoot a picture of your throttle side bar.....
I have too, and that is a very simple but not uncommon thing...and a good point to make for something to check.
I used the word "slightly" twice.....must have been half asleep...LOL.....
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