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vibrating belt when pulling trailer trailer, normal?
- Thread starter hotair
- Start date
Illinois Boy
New member
Are you putting the Spyder into "Trailer Mode"?
Are you shifting too soon?
Are you overweighting the Spyder (the trailer, its contents, your weight, your passenger's weight, your luggage on the Spyder)?
Are the wheels bearings moving freely on the trailer?
Tire pressure good all around on the trailer and Spyder (typically you want pressure higher for loads)?
As you can see, there are a lot of potential issues. Given that you do not have that problem without a trailer, it makes me suspect one of these or some other similar issue is at the heart of the problem.
Keep us informed as to what you discover...
NancysToy
Motorbike Professor
Kick the rpm up a bit and it may go away. Pulling a trailer is a lot like going up a hill. The engine will work harder, so you will feel more vibration. It may not be the belt. An overloaded trailer can amplify the vibration, too. Some early RTs had a clearance problem with the engine mounts that can cause a vibration. No one has reported it yet, and there may not be a cure if it is this issue, but a lot of other twins exhibit a strong vibration under load if the throttle body synchronization is off a tiny bit, or if the valve adjustment is off cylinder-to-cylinder. If it is the belt, the SmoothSpyder belt tensioner may help. Personally, I wouldn't worry about it, but if it bothers you by all means pursue a solution.
Jeriatric
Thinks out loud
Based on that information. If it were me. I would not think twice about going with CaptJims belt tensioner. I run one and it works very well.
None of my business but if you're not in a pull(climbing a reasonably steep grade) you shouldn't have to be running 6K at 65. When pulling my trailer as long as I'm at say 5200+ without the V Twin rumbling when throttling up lightly to 5500 or above then I know it's running comfortably.
jmy2c.....it's your to spend or toss in a wishing well.:thumbup:
Jeriatric
Thinks out loud
Illinois Boy
New member
Given what you said in latter posts, you are experiencing a typical situation of belt vibration.
The bottom line is the length of the belt design on Spyders, which lends itself to being prone to vibrate. It is therefore sensitive to several causes to make it vibrate. Belt tension is one of them and should be checked, along with belt-tracking/alignment. A few have found their engine was ever so slightly mounted out of alignment, and apparently resolved some of the problem once checked. However that would be lower on my list of causes - with belt tension being the first to check.
Other than tolerating it, which most of us do, you could look into the belt-tensioners some sponsors on here provide. Many have had good luck with them, but not sure the problem will ever entirely go away. Sorry...
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