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Old 05-02-2014, 07:18 PM Thread Starter
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Coasting downhill

So is it ok to coast down hills? Was looking for an answer for my sportster but no luck. Last bit home is downhill so i coast.

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Old 05-02-2014, 07:30 PM
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Yeah, it's kosher, not quite according to Hoyle or driving manuals, but hey...

Nowadays they call that hypermiling. I like seeing the Scangauge jump over 100mpg in the car.

Some cars don't like it, seems the trans in those doesn't get enough lube coasting in neutral.

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Old 05-04-2014, 02:27 AM
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All depends what ya mean by coast.....poppin into neutral ?...pullin the clutch in ?....or engine braking ?.....

I have a 4 mile downhill comin into my town from 2 sides.....I generally just engine brake....on the few 100ft long flats, I may gas it a lil......but I never brake.....



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Old 05-04-2014, 07:27 AM Thread Starter
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Usually i'm no higher than third and pop back to neutral. Letting go of the clutch.

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Old 05-05-2014, 05:40 PM
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I wouldnt do that too often....the internals are still spinnin, and when ya go back into gear, even though supposedly syncromesh, it wears on em....in your case, Id just ride the clutch...but thats just me....easier to replace clutch plates than gearbox gears....



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Old 05-05-2014, 06:09 PM
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Oh definitely just hold the clutch in, going clear down into neutral at speed is asking for trouble. It's best to bring the rpm up to try and match when letting the clutch back out.

We have long ass hills here, I can coast 12 miles on the 38 mile trip to the farm.

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Old 05-06-2014, 07:02 AM
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I believe the owners manual specificily says NOT to coast down hills.

I'm unsure of how much real damage you're doing though. Guess if you start at the top of a mountain and coast more than 5 miles??

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Old 05-06-2014, 09:52 AM
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Greetings Mr. Hoyle!

I think the manual also says don't ride fast, modify the exhaust, intake, or emissions, and always, always have your Vulcan serviced by a qualified Kawasaki dealer using only genuine Kawi parts and fluids.

Just pulling the clutch in shouldn't be a problem. There is some thinking that one can't maintain control while coasting. I think a lot of that pertains to using neutral and not having engine braking, and may be a holdover from the 1950s when it was a lot harder to get a manual car back into gear at speed. Still not recommended for large trucks.

Shifting down through 1st gear, at speeds higher than 1st would normally run, causes those gears to spin faster than they normally would, you can hear it in the trans as it begs for mercy. You should feel the drag in the trans increasing as you go lower through the gears while coasting. Cars can go straight to neutral, a bike can't. Of course, accidentally engaging a low gear at high speed could put your butt on the road instead of the bike.

Will I coast in gear with the clutch in? Yes, but only if the bike maintains enough speed.

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Old 05-06-2014, 10:44 AM
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I think goofyfoot needs to define what HE means by coasting....in neutral? Bike turned off? Clutch lever in?

And then he should explain why he feels the need to do this...

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Old 05-06-2014, 11:04 AM
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He already said he was using neutral.

Why? Let the engine rest, cool off, very good way to take heat out of an engine. Coast long enough, when you get on the gas it can drop 20-30 or more in some cases. I've even shut them down for the coast, and coasted on the race track at 230.

Save gas. (or hypermiling)

Reduce noise.

Following slow traffic.

Rest the throttle hand/arm.

Rest both hands/arms (see manual) "It ain't for everybody!" - Molly Hatchet

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Owner's Manual: http://www.mediafire.com/file/nscb5f...ers+Manual.pdf

Last edited by Spockster; 05-06-2014 at 11:12 AM.
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