Dumb Question?
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Stage III
Joined: Mar 2009
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Dumb Question?
Got a set of wagon spoke cast wheels from a Street Glide and I need to understand which direction do you place the small hole at the base of the spoke? Does the spoke cut through the air with the hole following or does the hole lead and the spoke follow?
Don't want to find I have mounted them incorrectly and end up with a whistling wheel as I cruise the highway
Don't want to find I have mounted them incorrectly and end up with a whistling wheel as I cruise the highway
Extreme HDF Member
Joined: Nov 2006
Posts: 13,702
Likes: 38
From: Houston area
Hmmmm....let me think about this a moment. It is a puzzle.
If the hole faces forward at the top of the wheel and the wheel rotates a half turn the hole would then be on the back....relative to front of bike. I think the same would happen when duck walked backwards, except the opposite, back to front. Maybe it will whistle half the time and perhaps change which half whistles based on speed of rotation compared to speed of wind caused by bike speed. If it whistles at all maybe it will be like a bird as the hole rotating into the wind would have speed of rotation added to speed of relative wind from bike movement...while the retreating hole would have speed of rotation subtracted from that relative wind....unless you were backing up really fast, then the effect would be reversed too.
I think I would be curious why there are holes at all if the wheel is hollow...air pressure equalization? Water drain at bottom for water that gets in the top?
If the wheels is solid cast then the holes would be more like dents. If the hole goes all the way through then maybe they are supposed to whistle so just dogs can hear it and not chase you? Somebody sells a whistle that is advertised to scare away deer...maybe this is same?
Good luck, I am out of ideas for the moment. Maybe the dealership can tell you
Maybe I am over thinking this.
If the hole faces forward at the top of the wheel and the wheel rotates a half turn the hole would then be on the back....relative to front of bike. I think the same would happen when duck walked backwards, except the opposite, back to front. Maybe it will whistle half the time and perhaps change which half whistles based on speed of rotation compared to speed of wind caused by bike speed. If it whistles at all maybe it will be like a bird as the hole rotating into the wind would have speed of rotation added to speed of relative wind from bike movement...while the retreating hole would have speed of rotation subtracted from that relative wind....unless you were backing up really fast, then the effect would be reversed too.
I think I would be curious why there are holes at all if the wheel is hollow...air pressure equalization? Water drain at bottom for water that gets in the top?
If the wheels is solid cast then the holes would be more like dents. If the hole goes all the way through then maybe they are supposed to whistle so just dogs can hear it and not chase you? Somebody sells a whistle that is advertised to scare away deer...maybe this is same?
Good luck, I am out of ideas for the moment. Maybe the dealership can tell you
Maybe I am over thinking this.
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Stage III
Joined: Mar 2009
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Thanks for the reply, I think the holes are there to drain water that may get in through the hub area as well during the casting process the spokes are formed hollow to reduce wheel wait. I will check with a dealer ultimately I guess, but I thought someone might have the same wheels and look to see which way they are oriented.
The same wheels have an offset valve stem, which is angled towards one side of the rim. I suspect it is to point towards the right side of the bike so when the bike is on the side stand the valve will be more accessible to fill with air. Who knows, but I will post an answer to this puzzle one way or another.
The same wheels have an offset valve stem, which is angled towards one side of the rim. I suspect it is to point towards the right side of the bike so when the bike is on the side stand the valve will be more accessible to fill with air. Who knows, but I will post an answer to this puzzle one way or another.
Cruiser
Joined: Jun 2011
Posts: 126
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From: indiana
this is correct
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