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How to reset the wheel size for the different wheels i use different size wheels on the same bike and the speed and distances are different

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You will have to use the manual that came with the unit. If you don't have the papers that came with it you can search the internet and use it.

Posted on May 24, 2017

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Posted on Jan 02, 2017

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EngineerGR
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SOURCE: A code for 27inch 700 wheels for sigma bicycle computer needed

Dear spinnerrr

  • Multiply the wheel diameter in mm or cm by 3.14.
  • Measure the distance travelled in one complete turn of the wheel.
this is the four digit number you are looking, it should be between 2145 and 2149

Regards

Posted on Mar 28, 2008

  • 13 Answers

SOURCE: I have a Huffy 13F WIRELESS COMPUTER for my bike,

go here:
http://www.huffybikes.com.au/index.php?module=product-detail&product=11
and contact Huffy. They can email you another manual

Posted on Oct 03, 2009

  • 1 Answer

SOURCE: What must be setting on wheel size if my bike

get a tape measure and measure the out side circunfrance of the wheel. This is you number. OR put a white dob of paint on the tyre and roll it in a strainght line until the dob of paint makes a 2nd mark, (on a path way etc) measure the distance. this will be the same as the first option. Generally its required in mm.

Posted on Oct 26, 2009

  • 17 Answers

SOURCE: Sensor not picking up wheel revolutions. Speed

Make sure your sensor and pick up are no more than 3mm from each other and the pick up is aligned with the middle of the sensor, there might be a mid-line marked on the sensor. I hope that helps

Posted on Mar 30, 2010

  • 547 Answers

SOURCE: how do I calculate wheel size for my bike. 25 inch...

There's a size chart on page 15 of the manual that has great instructions for measuring and entering the wheel size.

You can get the manual from Sigma's website at this link.

Method "B" is the most accurate way -- make a chalk mark on the tire and stand the bike up next to a wall with the chalk mark at the bottom.
Have a friend make a chalk mark on the ground at that point.
WITH YOUR FULL WEIGHT ON THE BIKE, move forward for one rotation of the wheel -- until the chalk mark is on the bottom again. Do this as straight-line as you can.
Have your friend make another mark on the ground at this point, and measure the line between the two points on the ground.

This is the wheel circumference, and if you do this with normal tire inflation and with your full weight on the bike, it's the most accurate way to calibrate your cyclocomputer.


If this helps, please be sure to hit the "thumbs up" for me.
If not, of if you have questions, use "add comment" to post back here, and I'll do my best to get you going.

Posted on May 22, 2010

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1 Answer

My bike has a 29" wheel. The manual only goes to 28" wheel to set the computer. What do I do?


Set it to 28, the error will be only 5.4 percent , it doesn't really matter.
For every one revolution of the wheel the computer will think the bike has travelled 5.4% less distance than it actually has travelled so it will under read distance and speed.

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The tire pressure monitors I have seen require you to drive a certain distance after correcting the low pressure condition.I believe it uses the wheel speed sensors to detect a tire with low pressure(then one that is low will be essentially be giving a different reading because it is rotating more times at a given speed).I am assuming the system IS sensitive enough to get a false reading if one of the tires is a mismatched size,so keep this in mind.

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Hi! I have a FUJI Thrill LT 1.0 bike frame with no rear shock (2006 model 17'') and I'm trying to figure out which rear shock to buy. On BikePedia.com they say my bike uses a "Manitou S-Type SRL,...


Eye-to-eye is the unloaded distance between the shock mount ends when its on the bike. Unless the shock could squish down flat the piston travel will be somewhat less than its total length. Effective axle travel from shock compression is a function of the bike design and the shock stroke distance. 145mm is the wheel travel, not the stroke.

Yes, they come in different lengths and stroke distances...

http://www.chainreactioncycles.com/Models.aspx?ModelID=46003

again, for different frame and suspension designs. You need to match the spec for YOUR bike. Unfortunately, no one specs the stroke of the shock when discussing the wheel travel. You may need ask Fuji directly.

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1 Answer

Unit is measuring cadence and heart rate, but is not measuring speed, distance or ride time.


Check to make sure your speed/ distance sensor is in alignment with your wheel magnet. If it is then check the battery in the sensor.

Speed and distance are on a different sensor than the cadence.

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Hello. My pulsar 150 UG3 is giving me speed of 47kmp at 4000Rpm which is 3kmp slower than normal as i have another same bike which produce 50kmp at 4000. How it can be corrected? I have consulted to...


Speedometers are not exact and they will vary slightly, even between the same model, year etc.
Tyre size and wear also affect the reading because of the distance travelled with one complete revolution of the wheel. A new tyre with plenty of tread depth will travel further in one revolution than an older worn tyre with less tread depth. If you have two bikes and the tyre treads are different depths, just measure around them both and you will see the different circumferences. Multiply that difference by 100 and you see how much further one will travel than the other in only 100 revolutions and when you think how many times a wheel goes round on a journey, the difference is huge. This puts into perspective the 3KPH difference and also why a tyre seems to wear out quicker once it is down to half the original tread depth......I know mine seem to.

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The speed mph varies widely even when the bike is going at a consistent pac. The computer will read 3 mph and then jump to 20 mph which the bike is just rolling without a big variation in speed.


The most likely cause is that the front wheel is a little loose. This causes the magnet on the spokes to pass the receiver on the bike frame at different distances. If it passes at more than 1 mm it won't be read so it is probably only reading some of the rotations of the wheel. The solution is to loosen the wheel and tighten the nuts inside the forks a little. When it's at the right tightness the weight of the wheel valve should be just able to turn the wheel until it reaches the bottom with the wheel raised off the ground. There should be very little or no sideways movement in the wheel. Also ensure that the magnet is not moving.

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ABS light will not reset on BMW R1100 rt after replacing abs sensor


you have to check the wires going to the abs, could be a bad wire, if they are ok then either the new sensor is malfunctioning, or the abs sentral is fried

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1 Answer

What must be setting on wheel size if my bike


get a tape measure and measure the out side circunfrance of the wheel. This is you number. OR put a white dob of paint on the tyre and roll it in a strainght line until the dob of paint makes a 2nd mark, (on a path way etc) measure the distance. this will be the same as the first option. Generally its required in mm.

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Is there any problem with mounting a 24x1.75 tire on a 24x1.375 wheel? I am building a 3 wheel recumbent bike and the 3-speed geared hub I found is from a Huffy bike that had 1.375 tires and wheels. I...


Strictly speaking:

Typically, 24x1.375 (1-3/8") wheels are either 540mm ("E5") or 547mm ("S5") in diameter. (Yes, annoying as it is, 24 inches doesn't always mean 24 inches!)

If you're planning on fitting a 24x1.75 tire, make sure it is the proper diameter to fit the rim. Since the wheel was from a Huffy, it's probably an S5, or 547mm rim.

Practically speaking:
Any 24x1.75 tire will probably fit the rim. As long as the tire's bead seats on the rim, the 3/8" difference in width should not present any problems.


Good luck!

more info on tire/wheel sizing:
http://www.sheldonbrown.com/tire_sizing.html

Sep 29, 2009 | Cycling

1 Answer

A code for 27inch 700 wheels for sigma bicycle computer needed


Dear spinnerrr

  • Multiply the wheel diameter in mm or cm by 3.14.
  • Measure the distance travelled in one complete turn of the wheel.
this is the four digit number you are looking, it should be between 2145 and 2149

Regards

Mar 21, 2008 | Computers & Internet

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