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I have a 07 UG when I down shift to slow down in 1st gear there is a whining noise. Dont get
this in any other gear, not moving that fast when down shifting to a stop. Is this normal or not.
Also I down shift a lot to slow down before braking is this bad for the motor??? I have asked where I bought the bike but noonein service could really say it would hurt the motor or not...Thanks
I don't know if I have the problem or not. I've an '06 Ultra but I never shift into first to slow down. I will use gears to slow down all the way through second, then use the brakes. Always have. Just doesn't feel right to me to use first gear for braking. When I do shift into first, I'm almost stopped anyway or moving very slowly. Interesting to see how many use first gear for braking. Just the way I've always done it--
Neither my 06 CVO with a 6 Speed or my 05 UC have any such noise. However, I seldom down shift when coming to a stop. I was taught in the Motorcycle Saftey Course to pull the clutch in and downshift as I am coming to a stop so I rarely uss the motor as a braking device. I recall they had a reason but I do not recall what it was. I do know that I've been told it's cheaper to replace brakes than motors. Hell I don't know. I just seldom do it!
That babble is certainly of no help! Sorry. But I have heard guys whining about noise from the 07 tranny's. My CVO's 6 speed (I replaced the 5 speed) has no noise. I would assume it's the same tranny they put in the 07.
All the 07's have 1st gear that is straight cut. That means it will whine when rotating.
As for using the motor to slow down. The only problem is that when the motor is used to reducethe speed and if you have a loose cam chain or weak valve springs the valves can hit the pistons. That ia a problemon drag race bikes where the valve to piston clearance is reduced for power gains and the cam chain stretches allowing the cams to advance timing.
I think if you are carefull and not at 5K RPM the bike should be fine using the engine to reduce the speed.
I personally don't use first gear as a brake.
I don't know if I have the problem or not. I've an '06 Ultra but I never shift into first to slow down. I will use gears to slow down all the way through second, then use the brakes. Always have. Just doesn't feel right to me to use first gear for braking. When I do shift into first, I'm almost stopped anyway or moving very slowly. Interesting to see how many use first gear for braking. Just the way I've always done it--
Same with me,so I don't know either. Maybe I'll check next time I'm out.
Besides 1st. being a straight cut and naturally noise-prone gear, in most vehicles the 1st gear sychronizer has to work seriously hard when asked to drop into 1st gear. The "hot" side ofa gear (power on)& the meshload are engineered to be reasonably quiet. The cold side which takes the load while decelerating is pretty hard to keep as quiet. Ford and others designed car/truck trannies that could stay quiet on both sides of the gear but the cost was prohibitive.
Lots of folksuse all gears for braking except 1st. You couldcause some rear wheel skid by braking with 1st gear on some loose surfaces, due to the big torque.
I understand about first gear being a straight cutgear. I usally down shift from 6thall the way down2nd gearsometimes 1st. but I just wanted to make sure I was'nt hurting the engine.
Thanks
I understand about first gear being a straight cutgear. I usally down shift from 6thall the way down2nd gearsometimes 1st. but I just wanted to make sure I was'nt hurting the engine.
I wouldn't downshift to brake, as that puts stress on the tranny and engine. Brake pads are cheap, so I would use the brakes and downshift only to get into a lower gear, not provide engine braking. As for the whine, 1st and 5th are straight-cut gears and will whine, but I've hardly noticed it in either gear on my '07 SG. What little is there certainly doesn't bother me because I know it is normal. I have a '66 'Vette with an Muncie M-21 and my HD tranny is silent by comparison.
Not sure about the "whine" in first -- frankly, I wouldn't use 1st as a braking or slowing gear.
But with regard to the other issue -- braking vs. downshifting to slow -- that has been covered on other posts here, and the overwhelming response is to use the engine and downshifting as a slowing mechanism to about 15-20, then pull in the clutch and brake to a stop. That said, the caution was also not to high-rev-and-drop the clutch to slow, as it does put extra stress on all involved components. But the control issue with the bike being in an appropriate gear to avoid a potential collision or accelerate suddenly if necessary is generally preferred and recommended. (If you are slowing and either leave in high gear or have pulled in the clutch, how do you know what gear you are in -- if you need to suddenly accelerate???)
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