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Message started by carguyz on 11/19/16 at 20:12:51

Title: Skeebo Pulley cover
Post by carguyz on 11/19/16 at 20:12:51

Hi All,

A while back, there was some discussion on an aluminum pulley/belt cover made by Skeebo. I’m almost finished with the Street Tracker and the stock pulley cover looks kinda lame. I made some measurements and drew up a cover that I think looks better. It follows the Skeebo design.

The stock cover uses 3 6MM bolts that thread into holes in the case. The Skeebo cover doesn’t use the front lower one. Instead, it looks like it picks up another smaller bolt that actually holds the engine cases together. Take the cover off and you will see what I mean.

Anyhoo, I printed out a cover on card stock and mocked it up on the bike. I think it looks good with the chain conversion. No, it doesn’t have the “fold over” on the top; this is just for a feasibility study. I think I can bend one up. I have gotten lots of practice bending aluminum with this bike. Numerous brackets, fork ears, seat pan, battery tray, etc.

What do you think?

John in Kalifornia

Title: Re: Skeebo Pulley cover
Post by Ruttly on 11/19/16 at 21:05:42

Hole needs centered over sprocket , make hole smaller

Nah still don't like it

You asked

Why not use stock cover and reshape rear of it to match your the rear of your pattern

Title: Re: Skeebo Pulley cover
Post by Kenny G on 11/19/16 at 21:21:25

Carguyz,

If you are actually going to make a cover you might want to consider using studs to hold the cover fast.

The 3 different length bolts, and all the spacers and washers and rubber washers can be a Royal PITA to install the cover.

The Japs could have taken a few lessons from the British when it comes to easy assembly of an engine..

Kenny

Title: Re: Skeebo Pulley cover
Post by carguyz on 11/19/16 at 21:58:31

Yeah, it doesn't look quite right. Maybe after I bend it up from aluminum it will seem better. Not biggy to make, just time.

The stock cover just doesn't seem "symmetrical" with those slots. I think they should at least be centered over the sprocket.

I like using socket head bolts for looks instead of studs. Those spacers can be a PITA. How about a combination of studs and nuts. Ever use a coupling nut? It is designed for fastening two threaded rods together. Here is my suggestion.

Title: Re: Skeebo Pulley cover
Post by Kenny G on 11/19/16 at 22:11:47

Carguyz,

I use coupling nuts all the time but it is very difficult to find 6mm coupling nuts. If I could find the coupling nuts I would set up my factory guard like you propose.

I think the next time I have my guard off I am going to use studs and acorn nuts, but I do favor your way of doing it.

Kenny G

Title: Re: Skeebo Pulley cover
Post by carguyz on 11/19/16 at 22:28:55

You can get all the fasteners you need from McMaster Carr. The local independent hardware store used to have all the metric stuff but it went out of business. The big box places sell hardware in plastic bags, very expensive onesie twosie  and they don't have what I need. I bought some stainless socket head fasteners from McMaster Carr in various sizes and lengths. Lots of other good stuff, too.

John in Kalifornia

Title: Re: Skeebo Pulley cover
Post by Kenny G on 11/20/16 at 05:45:07

Carguyz,

McMaster Carr is a good place to shop.

They also have a selection of Japanese Industrial Screwdrivers which are lifesavers for working on Jap carburetors.

I have also bought a lot the Vibration-Damping Sandwich Mounts from McMaster.
https://www.mcmaster.com/#vibration-damping-sandwich-mounts/=154e8d7

Kenny G

Title: Re: Skeebo Pulley cover
Post by Kris01 on 11/20/16 at 11:38:10

The jam nuts and couplers seem like a lot of trouble to do something simple.

Title: Re: Skeebo Pulley cover
Post by verslagen1 on 11/20/16 at 11:40:24

I would just make spacers and thru bolt it with button allens.

Title: Re: Skeebo Pulley cover
Post by batman on 11/21/16 at 10:23:43

I don't like the  idea of the top being open ,that's wear the chain and sprocket have a chance of grabbing clothes etc . I think the idea of reshaping the stock guard is better.If the stock cover looks unbalanced to you ,you could add a couple of slots in the lower part (drill two holes and connect the dots!)fairly easy.Myself I'd be running a pulley and chain guard ,if the chain were to fail at speed it would be hard enough to deal with the rear wheel possibly locking up ,without having the end of the chain adding the joy of slapping me in the back of the leg.

Title: Re: Skeebo Pulley cover
Post by carguyz on 11/21/16 at 20:31:49

Let's keep this simple.

1. Use the stock cover. No need to change bolts, studs, futz around with spacers, etc.

2. Copy the top two slots down three times, using the same spacing and slot width. The bottom two new slots will be exactly in line with the original top two, same length also.

3.  The middle slot will have to be shorter at the aft end to clear the mounting bolt. To make it symmetrical, center it fore and aft with the other slots. Or else, leave the front of the slot in line with the others.

4. Cut back the aft end of the cover at the top so that it makes a radius that is the same as the lower aft edge. In other words, the distance from the rear of the top slot to the edge of the cover should be the same as the distance from the rear of the new bottom slot to the edge of the cover. You can see what I mean, make it symmetrical.

Check the mock up picture. I think this will look pretty good without doing any sheet metal work. Just have to be careful cutting the slots to make it neat. If you paint the cover the same as the engine the angled parting line will not be too apparent.

BTW, the lack of a chain guard isn't a problem. This bike has a high pipe which keeps your leg away from the chain.

John in Kalifornia

Title: Re: Skeebo Pulley cover
Post by batman on 11/27/16 at 10:44:01

John, Your leg crosses over the chain ,unless your riding side saddle ;D
,and the exhaust pipe looks to high and the rounded profile might deflect the chain and still strike your leg,but safety is a personal choise.

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