Rubbing sound after Hamling Drive install - Suzuki Volusia Forums : Intruder Volusia and Boulevard Forum

te_griffin · 01-06-2013, 07:56 PM

Installed a Hamling drive a couple of months or so ago and I've come to notice sort of a rubbing/almost grinding sound. I don't ride two up often but a couple of weeks after install I was carrying a passenger and I first noticed it then. After noticing it initially I started paying more attention and it happens any time the suspension is compressed (i.e. bouncing over a speed bump). I adjusted the suspension to the stiffest setting and I'm still getting it on occasion, and seemingly constantly when I do ride two up. My first thought was drive shaft is too long, but it was supposedly used without issue before I bought it so I just assumed the shaft was within spec. Guess I'm going to be pulling her back apart this weekend to check, and if it is too long, I plan on just trimming down the engine side of the u joint.

My question is, is there something else I should be on the lookout for that could be causing this? Since the drive and shaft were used by a previous member without any issues to my knowledge I just want to have all my bases covered while I have her torn down.

rvcycleguy · 01-06-2013, 08:05 PM

Check your brake setting. When riding 2 up the rear suspension on the bike compresses which will change the geometry for the brake rod tensioner. May have to adjust it loose. Could be the brake shoes dragging that you hear.

472viper · 01-06-2013, 08:09 PM

^^^^Absolutly^^^^

Also, what you describe is the sound my u-joint made when I ran my bike with C90 drive and a stock length driveshaft.

So yes, I would verify the true length of the driveshaft.

Also, u-joints do wear out, even when the driveshaft is the correct length.

te_griffin · 01-06-2013, 08:09 PM

Quote:

Originally Posted by rvcycleguy

Check your brake setting. When riding 2 up the rear suspension on the bike compresses which will change the geometry for the brake rod tensioner. May have to adjust it loose. Could be the brake shoes dragging that you hear.

Didn't think of that. Thanks for the tip.

te_griffin · 01-06-2013, 08:35 PM

Loosened it to where there's barely any tension when I step on the brake pedal and took it for a spin around the parking lot. Bounced on it to compress the suspension while I was rolling and I'm still getting the noise.

MoDZuKi · 01-06-2013, 08:47 PM

Yup Check drive shaft length 15 3/4" From End of shaft to shoulder before the end splines
If too long- get it machined shorter!

te_griffin · 01-06-2013, 10:21 PM

Quote:

Originally Posted by 472viper

^^^^Absolutly^^^^

Also, what you describe is the sound my u-joint made when I ran my bike with C90 drive and a stock length driveshaft.

So yes, I would verify the true length of the driveshaft.

Also, u-joints do wear out, even when the driveshaft is the correct length.

Don't think it's the u-joint itself, since I never had the problem with the stock drive but had it almost instantly after the C90 install. And adjusting the brake didn't seem to make any difference. So I guess it's back to taking everything apart this weekend to verify driveshaft length.

te_griffin · 01-06-2013, 10:25 PM

Quote:

Originally Posted by M50Dave

Yup Check drive shaft length 15 3/4" From End of shaft to shoulder before the end splines
If too long- get it machined shorter!

15 3/4", gotcha. I still have the stock driveshaft I was going to use for comparison but you just saved me the trouble of having to dig it out of my buddy's garage

MoDZuKi · 01-06-2013, 10:32 PM

There are sticked drawings in the drives section I put up there ... have a look for reference
Cheers

mtmous · 01-07-2013, 08:49 AM

Mine was not related to carrying 2-up but I had to install a thin washer between the wheel hub and drive on the left side due to variance in thickness of the hubs on cast wheels. When I torqued the axle nut properly the wheel would drag slightly.

01-06-2013, 07:56 PM	#1 (permalink)
te_griffin VR Member Join Date: Apr 2012 Location: Macon, GA Posts: 93 Thanks: 20 Thanked 4 Times in 4 Posts	Rubbing sound after Hamling Drive install Installed a Hamling drive a couple of months or so ago and I've come to notice sort of a rubbing/almost grinding sound. I don't ride two up often but a couple of weeks after install I was carrying a passenger and I first noticed it then. After noticing it initially I started paying more attention and it happens any time the suspension is compressed (i.e. bouncing over a speed bump). I adjusted the suspension to the stiffest setting and I'm still getting it on occasion, and seemingly constantly when I do ride two up. My first thought was drive shaft is too long, but it was supposedly used without issue before I bought it so I just assumed the shaft was within spec. Guess I'm going to be pulling her back apart this weekend to check, and if it is too long, I plan on just trimming down the engine side of the u joint. My question is, is there something else I should be on the lookout for that could be causing this? Since the drive and shaft were used by a previous member without any issues to my knowledge I just want to have all my bases covered while I have her torn down. __________________ 05 C50- black wrapped VH Longshots, PCIII, blacked out air box/pair valve cover/headlight trim, John's 2.5" lowering bones, Mustang fender bib, Cruiser Performance 1.25" fatty T bars, naked front end, side mounted tag, Hamling drive

01-06-2013, 08:05 PM	#2 (permalink)
rvcycleguy Senior VR Member Join Date: Dec 2008 Location: Houston, Texas Posts: 2,099 Thanks: 321 Thanked 290 Times in 225 Posts	Check your brake setting. When riding 2 up the rear suspension on the bike compresses which will change the geometry for the brake rod tensioner. May have to adjust it loose. Could be the brake shoes dragging that you hear. __________________ 2006 C50c White with ghost flames Pwr commander, K&N, leatherlyke bags, tour backrest, 3 pc mustang, Cobra bars, Cobra boards, OEM light bar w/ driving lights, stk shield, vista cruiser, tank bib, stebel horn, Metzler white walls, dj drive, luggage rack, blue led lights. 2010-Guanajuato, Mexico 3 Sisters- Texas Hill Country 2011-Key West, FL Sedona,Grand Canyon, AZ 2012-Big Bend,Texas Santa Fe, NM and Colorado Rockies PCH- LA to SF rt.

01-06-2013, 08:09 PM	#3 (permalink)
472viper Senior VR Member Join Date: Jul 2005 Location: So. Dak. Sioux Falls Posts: 23,725 Thanks: 750 Thanked 1,515 Times in 1,193 Posts	^^^^Absolutly^^^^ Also, what you describe is the sound my u-joint made when I ran my bike with C90 drive and a stock length driveshaft. So yes, I would verify the true length of the driveshaft. Also, u-joints do wear out, even when the driveshaft is the correct length. __________________ 2006 M50/C50/109fender/ SE 50 wheels and HD bags 2007 1600 Kawasaki ClassicSOLD 2008 FLHX Street Glide 105th Anniversary #1387 USAF 1973-1977 SoDak ANG 1977-2010 Run my fingers across the bars of his cage and make the little monkey dance

01-06-2013, 08:35 PM	#5 (permalink)
te_griffin VR Member Join Date: Apr 2012 Location: Macon, GA Posts: 93 Thanks: 20 Thanked 4 Times in 4 Posts	Loosened it to where there's barely any tension when I step on the brake pedal and took it for a spin around the parking lot. Bounced on it to compress the suspension while I was rolling and I'm still getting the noise. __________________ 05 C50- black wrapped VH Longshots, PCIII, blacked out air box/pair valve cover/headlight trim, John's 2.5" lowering bones, Mustang fender bib, Cruiser Performance 1.25" fatty T bars, naked front end, side mounted tag, Hamling drive

01-06-2013, 08:47 PM	#6 (permalink)
MoDZuKi Senior VR Member Join Date: Apr 2011 Location: Alliston, Ontario Posts: 2,514 Thanks: 540 Thanked 348 Times in 294 Posts	Yup Check drive shaft length 15 3/4" From End of shaft to shoulder before the end splines If too long- get it machined shorter! __________________ It ain't getting what you want..It's wanting what u got! I am a victim of Mod- Mania The bike itself was the cheap part!!!!!...

01-06-2013, 10:32 PM	#9 (permalink)
MoDZuKi Senior VR Member Join Date: Apr 2011 Location: Alliston, Ontario Posts: 2,514 Thanks: 540 Thanked 348 Times in 294 Posts	There are sticked drawings in the drives section I put up there ... have a look for reference Cheers __________________ It ain't getting what you want..It's wanting what u got! I am a victim of Mod- Mania The bike itself was the cheap part!!!!!...

01-07-2013, 08:49 AM	#10 (permalink)
mtmous Senior VR Member Join Date: Nov 2007 Location: Grand Lake Oklahoma Posts: 1,923 Thanks: 0 Thanked 32 Times in 24 Posts	Mine was not related to carrying 2-up but I had to install a thin washer between the wheel hub and drive on the left side due to variance in thickness of the hubs on cast wheels. When I torqued the axle nut properly the wheel would drag slightly. __________________ Jim & Vickey 2006 C50C x2

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