General Discussion Triathlon Talk » How to : Custom cut your Disc Wheel COver Rss Feed  
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2008-03-30 10:45 AM

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Master
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St. Louis
Subject: How to : Custom cut your Disc Wheel COver
So I spent a couple hours yesterday cutting and installing my disc cover. I custom fit it to a Mavic Cosmic Carbone.


I first centered the drive side disc onto the wheel, and taped it in place with some packing tape.

After doing that, I measured out how far I wanted to cut the disc. I cut the disc to overlap the carbon fairing by about 3/4cm. I then used string, and tied it around the axle, and the other end to a pencil.
Make sure you tie the string low on the pencil in order to prevent you from changing the angle you draw at, which would change the distance.
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Start drawing! The pencil line is very thin, and easy to correct if you make a mistake.
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Get yourself a good pair of shears, and start cutting. The plastic cuts pretty easily, but trust me... your hand will get tired!
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About half the cutting is done here.
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Here is the fully cut Drive side
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I then took the drive side off, and taped it to the non drive side disc. I used the DS as a template for the NDS. It worked very well. I just traced a pencil line around the disc, and cut it out the same way. You are then left with two cut discs... almost done!
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Because I used a deep section rim, the original fastener holes were cut off when I did the trimming. I kept the wheels fastened together with tape, and placed the discs onto the drive side of my wheel. I have 10 fasteners, so I marked one hole between every-other pair of spokes on my wheel. (20 spoke wheel) . I then used a power drill and SLOWLY drilled out the holes. CAUTION : if you apply too much pressure or speed, you risk tearing or melting the disc. Take you time and it will come out great!

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Here it is! Completed! Total time was about 2 hours to really do a good job.
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Edited by ranger5oh 2008-03-30 10:48 AM


2008-03-30 10:54 AM
in reply to: #1302466

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Champion
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Checkin' out the podium girls
Subject: RE: How to : Custom cut your Disc Wheel COver
Nice craftsmanship!

Have you put the cassette back on? Any clearance issues there?

Thanks for the lesson: I'm probably getting one for my Spinnergy wheels and they're 45mm deep section, so I'll need the advice.
2008-03-30 12:37 PM
in reply to: #1302466

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Master
2202
2000100100
St. Louis
Subject: RE: How to : Custom cut your Disc Wheel COver
I need to get a new cassette for the wheel, so I havent put one on yet. It has a 9sp cassatte, and I am moving it to a 10sp for my tri-bike. Im too lazy to keep swapping out the one from my training wheel.
2008-03-30 1:05 PM
in reply to: #1302466

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Elite
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Subject: RE: How to : Custom cut your Disc Wheel COver
Nice job, looks like it came out great.
2008-03-30 4:43 PM
in reply to: #1302466

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Master
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Subject: RE: How to : Custom cut your Disc Wheel COver
Great work.
2008-03-30 5:41 PM
in reply to: #1302466

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Master
2202
2000100100
St. Louis
Subject: RE: How to : Custom cut your Disc Wheel COver
Thanks.. yeah, I really like the look of it. Soon as the rain lets up, I want to try it out!


2008-03-30 6:34 PM
in reply to: #1302466

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Not a Coach
11473
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Media, PA
Subject: RE: How to : Custom cut your Disc Wheel COver
Very nice work.  I don't trust my own craftmanship to do it myself, but yours looks great.  Put it to good use this season! 
2008-03-31 1:16 PM
in reply to: #1302466

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Veteran
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Subject: RE: How to : Custom cut your Disc Wheel COver
Interesting stuff, thanx for posting!

Care to share how much the materials cost you?
2008-03-31 1:40 PM
in reply to: #1302466

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Veteran
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Long Island
Subject: RE: How to : Custom cut your Disc Wheel COver
Nice Job :-)

Keep us posted on the results.......
2008-03-31 1:46 PM
in reply to: #1305249

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Master
2202
2000100100
St. Louis
Subject: RE: How to : Custom cut your Disc Wheel COver
D_M_S - 2008-03-31 1:16 PM

Interesting stuff, thanx for posting!

Care to share how much the materials cost you?


It was $78 shipped from www.wheelbuilder.com . MUCH less than the cost of a real disc. Its been raining here for days now... next nice day, and I am riding it!
2008-03-31 3:44 PM
in reply to: #1302466

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Member
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Subject: RE: How to : Custom cut your Disc Wheel COver
That's pretty cool.
For 78 bucks I'll probably try it out.

It looks like it might take me more than a couple of hours to complete.

You should let us know how much time you it cuts off your 20K & 40k rides or whatever test distance you ride.


2008-03-31 6:16 PM
in reply to: #1302466

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Master
2202
2000100100
St. Louis
Subject: RE: How to : Custom cut your Disc Wheel COver
If you are installing it on a standard "box" rim... then it would probably take you maybe 30 minutes to trim. The are made for that wheel.

If you arent too handy, they will cut it for you for an extra $25 or so.

Took me 2 hours, and I really didnt think it was very difficult. If you typically do the wrenching on your bike, this is a job you could do yourself. You just need some patience and a steady hand.
2008-03-31 6:35 PM
in reply to: #1306155

Champion
6539
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South Jersey
Subject: RE: How to : Custom cut your Disc Wheel COver
Nice work! How much help was the cat (who is so cute, BTW!)??
2008-04-02 9:18 AM
in reply to: #1302466

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Master
3546
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Millersville, MD
Subject: RE: How to : Custom cut your Disc Wheel COver
Just to add to your directions, since I could see a bafoon like me doing this... but when you tie the string on to the axle, tie it loose so that it rotates around the axle as the pencil does.
2008-04-02 9:33 AM
in reply to: #1310326

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Master
2202
2000100100
St. Louis
Subject: RE: How to : Custom cut your Disc Wheel COver
JoshKaptur - 2008-04-02 9:18 AM

Just to add to your directions, since I could see a bafoon like me doing this... but when you tie the string on to the axle, tie it loose so that it rotates around the axle as the pencil does.


Actually, by virtue of tying it to the axle it spins no matter how tight you tie it. The axle freely spins, so anything tied to it does so as well. It's idiot-proof! :D


Lauren... my cat says thanks! He enjoys the comliments.
2008-04-02 9:37 AM
in reply to: #1302466

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Giver
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Subject: RE: How to : Custom cut your Disc Wheel COver
You mentioned that you did the drive side disc and then used it as a template for the non-drive side. Since the two sides of the wheel are dished differently, making the effective diameter a bit different, did that give you any problems?


2008-04-02 9:37 AM
in reply to: #1302466

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Veteran
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Wheaton, IL
Subject: RE: How to : Custom cut your Disc Wheel COver
Nice work, very clean. Just one more thing to add to the wish list.
2008-04-02 10:06 AM
in reply to: #1302466

New user
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Subject: RE: How to : Custom cut your Disc Wheel COver

Looks great - nice job.

 For those of you like me that will either a) remove a digit doing the project yourself or b) totally ruin the wheel cover, you can send back your wheel cover to have it cut to size for a fee ($25 I think plus shipping). I need to do this to have my cover cut down to fit a 404.

2008-04-02 10:26 AM
in reply to: #1310496

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Sensei
Sin City
Subject: RE: How to : Custom cut your Disc Wheel COver

Ranger (and fellow engineer, is sounds),

How do the covers attach to the wheel.  I try to imagine fastening techniques but wonder how it is actually done.  People say the covers come loose, does that look like it could happen?

2008-04-02 10:33 AM
in reply to: #1310392

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Master
2202
2000100100
St. Louis
Subject: RE: How to : Custom cut your Disc Wheel COver
run4yrlif - 2008-04-02 9:37 AM

You mentioned that you did the drive side disc and then used it as a template for the non-drive side. Since the two sides of the wheel are dished differently, making the effective diameter a bit different, did that give you any problems?


They are dished differently, however... if you line up the centers of the covers, and then trace, it works perfectly. It looks very clean.

Aikido - The disc basically attaches through 10 fasteners that attach through the spoke gaps. They are basically just some short screws and caps which end up "clamping" the cover to your wheel. To be honest, yes... its possible it could come a little loose, I am thinking about using some tape though to hold the cover steady. If the weather holds out, I will issue a report after my first ride on it. I have a Duathlon in 1.5 weeks, so I am hoping i can get the darn thing outside for a test!
2008-04-02 12:33 PM
in reply to: #1302466

New user
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Subject: RE: How to : Custom cut your Disc Wheel COver
Another tip (since you have a duo coming up) - consider putting on your backup/trainer rear wheel when you transport your bike. The cover makes it difficult if you have roof rack (no place for the rear strap to go w/ the cover) and can be an issue with crosswinds at highway speeds. If you have a rear rack it may not be as much of an issue.


2008-04-02 1:16 PM
in reply to: #1310934

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Master
2202
2000100100
St. Louis
Subject: RE: How to : Custom cut your Disc Wheel COver
nPlusOne - 2008-04-02 12:33 PM

Another tip (since you have a duo coming up) - consider putting on your backup/trainer rear wheel when you transport your bike. The cover makes it difficult if you have roof rack (no place for the rear strap to go w/ the cover) and can be an issue with crosswinds at highway speeds. If you have a rear rack it may not be as much of an issue.


Oh, yeah... already planned on it. I have a roof rack and there was no way I was going to put on disc up there.
2008-04-02 1:32 PM
in reply to: #1302466

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Nor*Cal
Subject: RE: How to : Custom cut your Disc Wheel COver

What size drill bit did you use?

How far from the disc edge did you drill the holes? 

 

2008-04-02 1:38 PM
in reply to: #1302466

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Regular
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Subject: RE: How to : Custom cut your Disc Wheel COver
Something to think about, you could add a small drop of temporary lock-tite (the blue kind) to the end of the screws so the nuts will not loosen on their own.
2008-04-03 1:10 PM
in reply to: #1302466

New user
19

Subject: RE: How to : Custom cut your Disc Wheel COver
How much overlap does your cover go over the rim?
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