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| Twins Technical Talk Technical Talk for Hinckley Triumph Twins: Bonneville, T100, Speedmaster, America, Thruxton, and Scrambler |
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01-16-2008
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#1 (permalink)
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Senior Member
Powerbike
Join Date: Sep 2004
Location: San Diego, CA
Posts: 341
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Front wheel/rim scraping on something at high speeds
2005 Black Bonnie. I don't hear it when I'm riding around the streets early in the morning, but once I hop on the freeway, I constantly hear a "rubbing" sound that seems to be coming from the front wheel, and increases/decreases with my speed. After getting off the freeway, I can still hear it for a bit at slow speeds, then it seems to die down, so I was thinking it was when the bike was hot that has something to do with it. I changed out my brake pads with EBC's, and admittedly, they were a pretty tight fit, but that was about a month or two ago, and I'd think they'd have worn down a bit now to the point that they wouldn't be rubbing.....I also had new tires put on by the dealer about a month ago...Ideas? Suggesstions?
Thanks in advance.
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01-16-2008
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#2 (permalink)
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Senior Member
Formula Extreme Favorite Bike: Mine of course!!!
Join Date: Oct 2007
Location: New York, Long Island - ex London, UK
Posts: 430
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There are only a limited number of things it can be, so a systematic check should isolate the culprit. Assuming there is no physical malfunction causing a rub (misaligned fender or cable etc.) then it's got to be brake pads (make sure everything is torqued down evenly on the calipers) or the front spindle (axle). Again make sure that everything is torqued down as it should be and the bearings are good (what's the mileage?). It may also we worth checking the speedometer cable... if it's dried out a little and is binding, then that can cause noise... re-grease and see what happens.
__________________
Cheers... Bish
'06 Black & check Thruxton - AI & airbox gone, TORs, instruments lowered, YSS piggybacks, prog fork springs, gaiters, kneepads, rear fender bobbed, lucas rear light, Napoleons, custom blue/chrome headers, and a little duct tape...
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01-16-2008
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#3 (permalink)
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Senior Member
Powerbike
Join Date: Sep 2004
Location: San Diego, CA
Posts: 341
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I'll check tonight to make sure the axle is torqued properly. I know the calilpers are, but I'll double check that as well. It only has 8500 miles on it. Excuse the newb question, but how would I go about greasing the speedo cable, and with what kind of grease? Thanks.
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01-16-2008
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#4 (permalink)
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Senior Member
Moto Grand Prix
Join Date: Jun 2005
Location: Stuart Fl
Posts: 3,171
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Rubbing
Put it on the jack & start spinning. You will find the culprit. Doesnt sound serious tho
On the jack you can see if there is any thing uneven in the wheels as we;ll. If you need to get the wheels spinning faster- use an electric drill & strap down the bike & USE THE SAFETY LEGS!!! Could be the speedo?
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CAPT D
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01-16-2008
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#5 (permalink)
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Senior Member
Formula Extreme Favorite Bike: Mine of course!!!
Join Date: Oct 2007
Location: New York, Long Island - ex London, UK
Posts: 430
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As far as I remember (I've not done the Thrux, but it was true for other bikes in the past), if you disconnect the wheel end of the cable, the inner (revolving) part is free running and will actually pull out of its outer sheath. It can be greased and reinserted. If you have trouble getting the inner to sit back in the drive at the speedo head, just a little twist should help to locate it (I think it's just a square drive). I think just "regular" grease will do the job, I don't think there's any need for high temp or anything special.
I stand to be corrected as this is best guess 
__________________
Cheers... Bish
'06 Black & check Thruxton - AI & airbox gone, TORs, instruments lowered, YSS piggybacks, prog fork springs, gaiters, kneepads, rear fender bobbed, lucas rear light, Napoleons, custom blue/chrome headers, and a little duct tape...
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01-16-2008
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#6 (permalink)
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Member
Grand Prix 125 Favorite Bike: 1972 Norton commando
Join Date: Dec 2007
Location: staffordville connecticut
Posts: 35
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noise at high speed
Check; front wheel true, suspect loose spokes on front wheel which at high rpms may cause the front wheel to spin out of round so to speak. This action woould/may result in the brake pads contacting the rotor resulting in noise and/or vibration. Just my two cents worth.Craig
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01-16-2008
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#7 (permalink)
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Senior Member
Powerbike
Join Date: Sep 2004
Location: San Diego, CA
Posts: 341
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Thanks. Will check all this evening and post back.
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01-16-2008
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#8 (permalink)
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Senior Member
Formula Extreme Favorite Bike: 2001 Sky Blue Bonneville
Join Date: Mar 2007
Location: Coventry, England
Posts: 708
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It maybe just road noise from the tyre
Mine is fine round the streets, but I notice a noise from the front end at higher speeds depending on what tarmac I'm on
I could only put it down to road surface noise
But it's wise to do the checks
__________________
Ian
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01-16-2008
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#9 (permalink)
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Senior Member
Formula Extreme Favorite Bike: Mine...of course
Join Date: Jan 2008
Location: Jacksonville, FL
Posts: 439 Other Motorcycle: 'Zuki GS1100E
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you could have a sticky caliper too.
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2001 Black Bonneville 1200cc "High Tuned Son-of-a-Bitch!"

Bored, Stroked, and Injected!
Life always gets better after a few gears and a shot of nitrous....
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01-16-2008
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#10 (permalink)
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New Member
Production 125 Favorite Bike: 2007 BONNIE BLACK
Join Date: Jun 2007
Location: GUERNSEY UK
Posts: 8 Other Motorcycle: 2001 HD HERITAGE Extra Motorcycle: 2004 BUELL XB12S
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noises
I had a similar problem on one of my harleys after i had fitted a set of wheels and tyres and thought it was just the pads rubbing but it was a slightley warped brake disc which you should be able to check on a stand or lift
Good luck
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