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Old 01-13-04, 08:32 AM   #1
kiingfinny
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computer magnet and bladed spokes

i have a wheelset with bladed spokes ('99 Rigida something or other) and i want to mount a computer, but the magnet will not fit on the wheel considering i have non-standard spokes. does anyone have any suggestions/ideas? i was going to use some glue or tape, but i dont wat to do anything stupid if i dont have too
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Old 01-13-04, 09:26 AM   #2
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Clamp to the one spoke and use a paperclip to keep it from rotating? Good luck.
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Old 01-13-04, 09:27 AM   #3
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I think Mavic do one that fits bladed spokes. Ask your local dealer.
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Old 01-13-04, 09:27 AM   #4
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Quote:
Originally Posted by kiingfinny
i have a wheelset with bladed spokes ('99 Rigida something or other) and i want to mount a computer, but the magnet will not fit on the wheel considering i have non-standard spokes. does anyone have any suggestions/ideas? i was going to use some glue or tape, but i dont wat to do anything stupid if i dont have too
Enlarge the hole in the magnet.
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Old 01-13-04, 10:39 AM   #5
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Cateye makes magnets that fit bladed spokes. Try a bike shop or running store that caters to triathletes.
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Old 01-13-04, 11:16 AM   #6
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I think Mavic do one that fits bladed spokes. Ask your local dealer.
Mavic do make one but it ain´t cheap .
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Old 01-13-04, 11:23 AM   #7
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Quote:
Originally Posted by kiingfinny
i have a wheelset with bladed spokes ('99 Rigida something or other) and i want to mount a computer, but the magnet will not fit on the wheel considering i have non-standard spokes. does anyone have any suggestions/ideas? i was going to use some glue or tape, but i dont wat to do anything stupid if i dont have too
Don't bladed spokes transition to round near the nipple and/or hub? Can't you move the magnet furthur out/in. On my '99 Lemond Alpe with Rolf wheels, I had some problems mounting the magnet for the Flight Deck. I wound up having to move the magnet furthur out from the hub. I then had an physical interference issue between the magnet, pickup sensor and fork. Wound up putting the sensor on the other side of the wheel, facing backward (towards the opposite side fork) where the sensor was mounted. Has worked fine since.
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Old 01-13-04, 11:32 AM   #8
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Quote:
Originally Posted by dobber
Don't bladed spokes transition to round near the nipple and/or hub? Can't you move the magnet furthur out/in. On my '99 Lemond Alpe with Rolf wheels, I had some problems mounting the magnet for the Flight Deck. I wound up having to move the magnet furthur out from the hub.
That's what I did too... FlightDeck and Mavic Ksyrium SSC. The side-benefit for me in moving the sensor and magnet outwards was that it decreased the distance between the wireless sensor and the head unit mount making the pickup more reliable.
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Old 01-13-04, 11:45 AM   #9
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Quote:
Originally Posted by caloso
Cateye makes magnets that fit bladed spokes. Try a bike shop or running store that caters to triathletes.
You can also call Cateye direct and they will send you one. They are pretty cheap if I remember right. (around 3-4 dollars?) I had to get on to fit my Rolf wheels a couple of years ago.
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Old 01-13-04, 11:52 AM   #10
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Glue any magnet on there.
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Old 01-13-04, 12:00 PM   #11
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My Cateye magnet fit on the blades of my Spinergy Xaero-X just fine. It fits below the bladed section of the spokes. It is on the rear wheel, since I have an Astrale, but it is on the non-drive side, so it is still on a radially laced set of spokes.
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Old 01-13-04, 03:31 PM   #12
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well, i think the mistake i made in my first post was not describing the spokes well enough. the wheel is a rigida rim w/ giant carbon/kevlar spokes. heres a pic of a similar (not mine...need a digicam ) wheel.

Last edited by kiingfinny; 01-13-04 at 03:32 PM. Reason: added pic
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Old 01-13-04, 03:33 PM   #13
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ive thought about gluing...has anyone else ever tried it? this magnet is for a polar computer, but a magnet is a magnet right, or not?...id like to not have to buy any other parts, but if thats my only option thats what ill do.
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Old 01-13-04, 05:28 PM   #14
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Quote:
Originally Posted by kiingfinny
ive thought about gluing...has anyone else ever tried it? this magnet is for a polar computer, but a magnet is a magnet right, or not?...id like to not have to buy any other parts, but if thats my only option thats what ill do.
IMHO, since it's CF, I think you're certainly going to have to glue the magnet on. I would not trust clamping anything to those spokes for fear of structural failure. You might want to try something similar to the adhesive mounted magnet (CY-32-08 Sticky Backed Magnet) at the bottom of this page.
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Old 01-13-04, 06:26 PM   #15
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Well my first sugestion was worthless!
Didn't there used to be a computer that used a ring that mounted right next to the hub? Maybe Avocet?
On the cheap zip tie a plastic spoke protecter to the wheel with the magnet already mounted to the hole you drilled through?
See my old units used a screw to clamp onto each spoke, 14 year old paramounts, not even sure what is produced now, I just got a handel bar mount for my etrex.
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Old 01-14-04, 06:19 AM   #16
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Or try double-sided foam tape... That's how I attached the cadence magnet (yanked off my refrigerator!) to my crank. The added bonus was that the thickness (2 layers) of the tape got the magnet closer to the sensor.

Also not as permanent as glue...

-Erik
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Old 01-14-04, 08:48 AM   #17
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Quote:
Originally Posted by kiingfinny
well, i think the mistake i made in my first post was not describing the spokes well enough. the wheel is a rigida rim w/ giant carbon/kevlar spokes. heres a pic of a similar (not mine...need a digicam ) wheel.
Those aren't spokes, they're fan blades
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Old 01-14-04, 09:28 AM   #18
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yeah, the wheels arent ideal for sure...a failed attempt at aero construction from years past. however, i got the bike used for pretty cheap as my first road bike, so all i was looking for was something that was safely rideable (and the LBS said they were, tho they had to search awhile to find a tool to use to true them). i want a new wheelset in the future, but thats a budget pending sort of thing.
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Old 01-14-04, 10:41 AM   #19
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Quote:
Originally Posted by kiingfinny
yeah, the wheels arent ideal for sure...a failed attempt at aero construction from years past. however, i got the bike used for pretty cheap as my first road bike, so all i was looking for was something that was safely rideable (and the LBS said they were, tho they had to search awhile to find a tool to use to true them). i want a new wheelset in the future, but thats a budget pending sort of thing.
What do they sound like? I could imagine in the right kind of crosswind they'd be akin to the old baseball card in the spoke.

They are unique looking, thats for sure.
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