| Author | Message | ||
     Pso |
Any aftermarket auto primary chain adjusters. Or can something from harley be used? This device would make maintence of bike so simple. xb12. | ||
| Sparky |
DON'T DO IT! There is a spring loaded unit on the market that replaces the stock shoe, but don't even think of using it. It can potentially ruin your engine if you ever use the engine as a brake, as in coasting from high revs going into corners. What happens during engine braking is the bottom run of the primary chain goes tight and compresses the undamped shoe spring while the top run goes slack resulting in the chain hitting the inside primary cover and anything else in its way. Shock loading of crankshaft and tranny input shaft bearings is possible during on-off throttle jockeying with this unit installed. It only takes about 10 minutes to check/adjust the stock shoe every, what, 5000 miles. Besides that gives you a chance to see/smell/touch the primary oil condition. That's worth peace of mind, I'd say. | ||
| Pso |
Warning heeded-Thanks Sparky (Message edited by pso on June 18, 2008) | ||
| Hootowl |
Agreed. I've never heard anything good about those spring load adjusters. The stock shoe in the XB is mighty strong. | ||
| Road_thing |
I've owned four different tubers, all bought used, and two of them came with those Hayden tensioners installed. They were both broken the first time I looked inside the primaries. For whatever reason, they don't seem to work very well in Buells. rt | ||
| Al_lighton |
Oregon Hot bikes makes one for the big twin that's pretty cool...kinda like a Hayden Chain tensioner, but LOTS sturdier and with a hydraulic piston and ball check valve on it. When there is slack on the chain, the spring pushes up on it, the piston cavity fills with primary fluid. When you downshift, the piston goes into hydraulic lock and it keeps the tension in. It's a cool idea, but difficult to implement on a sportster type primary. The chain tensioner lives in the case on a big twin, but fits in the primary cover on an XL/XB. It could be done, but so far they've never released an XL/XB design. I'd buy a well engineered one. But primary chain adjustments aren't THAT big a deal, it's pretty easy to do, doesn't need to be done that often. Al |
