Talk Morgan Forums Morgan Sports Cars Morgan Three Wheeler & Super 3 Thinking Of Buying One

Yes. Every time I have a look in the rear wheel area it has a fine metallic dust around the drive belt, which can only be the rear drive gear wearing away. As has already been said, the BB gear is as new so the alloy material of the rear gear wheel is not up to the job, maybe made to last a little longer than the warranty?

Had a look at some HD forums ....the accepted advice seems to be....

1. Just wash with soapy water

2. Use a HD belt lube (not specified)

3. Use baby talk - a new one - worth a shot!!

Had a look at a load of HD parts suppliers, no titanium rear pulleys to be seen.

Most are as Morgan does, anodised aluminium.

I wonder why?

Has anyone had a problem yet with the rear sprocket wearing out?

Or would titanium/steel reduce the belt noise?

I wore out my first one at about the 6,000 mile mark. I'm detecting wear on the second after 2,500 miles. Warranty covered this.It will probably go back for another warranty fix before the 2 year mark.

Talked with a Harley Davidson shop and they said it would probably be no problem to order an H-D sprocket assembly which would be made out of chromed steel. Readily available apparently.

My original sprocket , without a flange , wore out in about 4000 miles . The replacement flanged one is showing very little wear and has done around 6000 miles .
My belt has been quiet since the replacement was fitted and I have never felt the need to put any sort of dressing on it which makes me think the noise is either an alignment or tension issue .

I think that the information about the Harley sprockets has been incorrect.

I have a sprocket here in my office with the inside flange popped off due to picking up a rock. I'm just getting a new inner ring cut out in our water jet and will TIG it back on for him to get back on the road.

This sprocket has over 40k miles on it and it belongs to a friend of mine. It's not unusual for a belt and sprocket to last 50k to 60k miles when ridden normally.

This is a current touring 1" wide sprocket that has been used on all touring bikes since '08 with the cush drive.

This is a cast aluminium sprocket, not steel, chromed or anodized when new. You can see some wear from the belt, but even though it's a Kevlar belt, only the rubber ever touches the aluminium. If the Kevlar was touching the sprocket the belt would be worn out or defective.



This shows the cush drive lugs that mate up to the rear wheel. The normal touring 16"x5" rear wheel now have 180's installed.



Just one last item to show you guys. We have an Omax water jet that can take a 5'x10' sheet of just about anything. We cut our Lexan guarding with the radius corners and all the 1/4" retaining holes; cuts like butter.

The picture below is the off fall from our last run of cutting timing sprockets for one of our new servo machines. These sprockets are cut from plate aluminium and are 1" thick.

The pitch on these is 8mm Polychain and I believe yours as well as the Harleys are 14mm pitch. We've cut both and we can cut any diameter or tooth number we want once it goes through our Solidworks for a proper layout.



These particular sprocket run the Gates Polychain belts 24/7/365 and we've not replaced one in 8 years since we've been making our own sprockets.

Just a bit of background on water jet cutting. On thicker material like the sprocket the jet will tend to lag behind like a cutting torch does. We have the Tilt-A-Head option that allows our cutting jet to tilt up to 9 degrees in any direction while cutting.

By running test parts we can tilt the head so the diameter is exactly the same on the top as the bottom after cutting. We do 2" thick aluminium plates and we blow holes for 1/4" taps all the way through. At first they were funnel shaped, but with the tilt-a-head we can keep the bore diameter the same all the way through the 2" plate.

We can cut colored glass too. We have a customer that draws out what she wants the stained glass to look like in AutoCAD and then gives us a .dxf file for the Omax. We cut all the very intricate pieces for her and they are smooth on the edge.

Sorry for rambling again about a side topic.

Have a great day dudes and dudettes...

Whoa Dan, thats some piece of kit. Love to see a video of it in action.

Those sprocket cut outs are about 7" in diameter to give you an idea of the size.

We can get great material utilization from the water jet. It even has an auto nesting option if you're going to run multiple parts of the same part number within a certain material size. It will find the best layout to optimize the material efficiently.

Like I said on the 2" thick 1/4" tapped holes, the water jet is good enough that we just go ahead and run a tap through the hole, no drilling necessary.

My boss had some teak wood left over from a deck project and had his name cut in script into it and used it as a house name sign.

If we're cutting Lexan, we usually put cardboard over the top so the puncture holes don't overspray outside the hole. There is "some" blow back when holding in one spot while the jet works its way through the part.

Later...

You could make sprockets for mtw ?