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Old 01-12-2014, 03:57 PM   #1
armourbl OP
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Joined: Jun 2011
Location: Phoenix, AZ
Oddometer: 631
Possible solution to death wobble with Dunlap 908 RR

I say possible in the subject line because I don't have enough ride time yet to know for certain if this is the cure all or just makes things better.

While reading endlessly about tire recommendations, I ran across a recommendation a poster made for wobble at speed or similar characteristics. He recommended using the product named Ride On. He even said he completely removed the wheel weights. I left the weights on my wheel since I didn't know what to expect for results and the product will work with them.

Works with tubes and radial tires. For a 90/90/21 front you need about 6 ounces of product according to their installation table.

I put the product in and ran the bike for 12 miles near the house on some surface streets and freeway. As the directions say, it took a few miles to seat properly around the tire. After that, things felt so much better. Before installing this I didn't dare take the bike over 85 mph, and the wobble was there from about 75 mph and especially with any deviation in pavement surface.

After install I was able to confidently take the bike up to 95 mph, but I stopped there as I didn't want an insane speeding ticket or to chance the knobby tires with tubes much faster. I made several aggressive lane changes above 75 mph without any incident or sign of the wobble. The bars still feel light at those speeds, but not scary.

Only time will tell for sure if this turns out to be a winner, but so far so good.

This could also solve the need to balance the wheels after installing new rubber and I might even be able to reuse the tube with the product if it is in good condition.

Rode the bike to work yesterday. About 70 miles round trip, mostly freeway. While I can say that running the product in the front tire has most certainly helped to improve the systems, it hasn't eliminated them entirely. Crossing the paint dividing the lane, cracks in the pavement, etc., make the bike wobble at speed. It isn't nearly as scary was before, but still there. Maybe it is just a characteristic of this type of bike that I need to adapt to, we'll see. Like everyone recommends, I'll be trying a new front tire eventually and hope that it resolves the issue.

Second Update:

Mounted up a new Michelin T63 to the front this morning and then rode for 60 miles. Just to recap, I'm still running with the Ride On product in the inner tube. With the new tire, I also removed the wheel balance weights. The road conditions were a mix of surface streets, freeway, hwy, asphalt and grooved concrete.

It probably comes as no surprise to many of you, but changing the front tire was the cure for my wobble issues. Rode steady and stable on any and all road conditions at any speed. Make me a heck of a lot happier with the new bike.

The T63 isn't an aggressive knobby tire, but still has enough there to make it good probably most conditions, but I'm guessing not great off road. For now, I'm happy with that. It will be a long while before I start single-tracking this beast, and most dirt it will see will probably be fire roads for the time being. And when it does see dirt I'm expecting to be loaded down and not trying to set any time/speed records off road. I have my CRF450R for that kind of riding.


armourbl screwed with this post 01-19-2014 at 01:53 PM Reason: update
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