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-   -   cateye setting (http://www.bikeforums.net/folding-bikes/550538-cateye-setting.html)

DLBroox 06-10-09 02:17 PM

cateye setting
 
Anyone set up a cateye wireless for Kenda Kwest tires 20 x 1.25? Looking for the number to enter without actually having to figure it out myself!

bhkyte 06-10-09 03:05 PM

Sheldon brown for heavens sake.

kamtsa 06-10-09 04:20 PM

Quote:

Originally Posted by DLBroox (Post 9078160)
Anyone set up a cateye wireless for Kenda Kwest tires 20 x 1.25? Looking for the number to enter without actually having to figure it out myself!

I am using Kojak tires (ERTRO 35-406) and setup my Cateye Strada Wireless for 1500.

I compared it yesterday with GPS tracker of my phone and the strada has 5% miles more than the phone.

BTW, the manual and the wheel table is here if it helps:

http://www.cateye.com/sites/cateye/u...W_ENG%2Bv3.pdf

Kam

jur 06-10-09 05:06 PM

Here ya go: 406mm + 2*1.25*25.4mm = 470mm; pi*407 = 1475mm.

DLBroox 06-10-09 06:08 PM

Cool, thanks Jur!

kamtsa 06-10-09 06:15 PM

Quote:

Originally Posted by jur (Post 9079213)
Here ya go: 406mm + 2*1.25*25.4mm = 470mm; pi*407 = 1475mm.

Thanks Jur. I did not know that the Strada units are in mm.

How did you determine that the tire height height on each side is 1.25"? Is it the same as its width? I would expect it to be about the half of the width.

Kam

EvilV 06-11-09 01:43 AM

It's easy to do a roll out.

1. Put the bike on a flat surface.

2. Make a chalk mark on the ground and the tyre where the tyre contacts the ground. Do it in the middle of the contact patch.

3. Roll the bike forward until the chalk mark on the tyre is again in the centre of the ground contact patch, but one wheel revolution further forward.

4 Make another mark on the ground at the centre of the contact patch.

5. Measure the distance between the two marks on the ground.


Job done. Any wheel. Any tyre. No tables needed. Just measure and mark carefully and use a thin chalk to get accurate marks.



If you have no chalk, just use the tyre valve as the reference point on the wheel and place a matchstick on the ground at either end of the wheel roll out.

jur 06-11-09 03:57 AM

Quote:

Originally Posted by kamtsa (Post 9079493)
Thanks Jur. I did not know that the Strada units are in mm.

How did you determine that the tire height height on each side is 1.25"? Is it the same as its width? I would expect it to be about the half of the width.

Kam

Height is about the same as width measured from the bead seat. It's close, gives about a 1% accuracy from what I checked on my own bikes. I always use the rollout method given above by EvilV but have always been surprised at how close the calculated amount comes (I'm an engineer, see, we measure with a micrometer, mark off with chalk and cut with an axe).

EvilV 06-11-09 12:20 PM

Quote:

Originally Posted by jur (Post 9081496)
........but have always been surprised at how close the calculated amount comes (I'm an engineer, see, we measure with a micrometer, mark off with chalk and cut with an axe).

I thought you'd use a chainsaw for cutting now we are in the twenty-first century. It's cool as long as you remember which side of the line you have to cut to.

:lol:

rbrian 06-11-09 05:07 PM

Quote:

Originally Posted by EvilV (Post 9084022)
It's cool as long as you remember which side of the line you have to cut to.

:lol:

Usually the other side. :bang:

wink 06-23-09 07:34 PM

Quote:

Originally Posted by EvilV (Post 9081346)
It's easy to do a roll out.

1. Put the bike on a flat surface.

2. Make a chalk mark on the ground and the tyre where the tyre contacts the ground. Do it in the middle of the contact patch.

3. Roll the bike forward until the chalk mark on the tyre is again in the centre of the ground contact patch, but one wheel revolution further forward.

4 Make another mark on the ground at the centre of the contact patch.

5. Measure the distance between the two marks on the ground.


Job done. Any wheel. Any tyre. No tables needed. Just measure and mark carefully and use a thin chalk to get accurate marks.



If you have no chalk, just use the tyre valve as the reference point on the wheel and place a matchstick on the ground at either end of the wheel roll out.

+ 1 Do what the man says and you will be pretty darn close.:thumb: I use 1504 for my 20x 1.5 Kwest.

kamtsa 06-23-09 07:59 PM

Quote:

Originally Posted by wink (Post 9154792)
+ 1 Do what the man says and you will be pretty darn close.:thumb: I use 1504 for my 20x 1.5 Kwest.

Try 2500. You will be amazed how it speed up the bike.

;-)

Kam

EvilV 06-24-09 02:13 AM

Quote:

Originally Posted by kamtsa (Post 9154917)
Try 2500. You will be amazed how it speed up the bike.

;-)

Kam

:lol:

I need to try that.


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