Jaycar Speedo Corrector

[Adjuster]

Originally Posted by jimjr21

The very best way to find your roll out is what I call the oil spot method.

On a clean surface put a single drop of oil (any liquid will do) on your front tire. Roll bike straight and upright to put tow linear marks on the ground. Measure distance from front edge to front edge. This will be your true roll out including any flex in the tire carcass.

Use this measurement to input for speed calculations.

Very clever.


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[SpudRider]

Originally Posted by jimjr21

The very best way to find your roll out is what I call the oil spot method.

On a clean surface put a single drop of oil (any liquid will do) on your front tire. Roll bike straight and upright to put tow linear marks on the ground. Measure distance from front edge to front edge. This will be your true roll out including any flex in the tire carcass.

Use this measurement to input for speed calculations.

That is the calibration method prescribed by the user's manual for my Trail Tech Vapor computer. I sat on the bike while I rolled three revolutions of the front wheel along a crack in the pavement. Then I measured the roll out distance, and divided by three.

[Adjuster]

Thats also very clever going for the average.


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[SpudRider]

Unfortunately, the two speedo correctors I have examined are not calibrated using wheel roll out. However, this is exactly the method you use to calibrate the speedometer for the Trail Tech computers.

[Pliskin]

Spud please check your inbox.

[SpudRider]

Originally Posted by Pliskin

Spud please check your inbox.

I read your personal message, and sent a new email to the address you provided. Thank you very much for helping me contact this company.

[SpudRider]

Thanks to the assistance of our fellow Zongite, Pliskin, I just got a reply from Jaycar regarding the price of their Speedo Correctors.

When ordering ten or more of the units, the price for each Speedo Corrector is $23 USD. The shipping cost via DHL is $60 for a 5-day delivery to my address. Therefore, the cost of each unit, delivered to Idaho, is $29 USD. I will charge an extra dollar per unit to help cover my fuel costs driving to the local post office.

Therefore, the cost for each unit will be $30 USD, plus the actual shipping/packaging costs to send the unit to your home address. I'm getting two units, so I believe the current count is a commitment for 8 units. Once we get two more buyers, I might as well start collecting the money so we can order the units.

[SpudRider]

Incidentally, I didn't get a reply to my question regarding the water resistance of the units. Therefore, I sent another email, and repeated the question. I will post the reply after I receive it.

[Pliskin]

Originally Posted by SpudRider

I read your personal message, and sent a new email to the address you provided. Thank you very much for helping me contact this company.

I am glad I could be of assistance.

[No1Vic]

Just got one of these from Jaycar Australia, when I get a dry afternoon will see if it works ..... Get annoyed with the RX3 speedo being so out!

[SpudRider]

Originally Posted by No1Vic

Just got one of these from Jaycar Australia, when I get a dry afternoon will see if it works ..... Get annoyed with the RX3 speedo being so out!

That's great. Please do share your review of this product when you have time. Can you post some photographs of the unit now? How do you like the quality of manufacture? If I may ask, how much did Jaycar charge you to ship one unit to England?

[No1Vic]

I paid £14.50 for the unit with £5 delivery and added £2.50 for insurance....Only took 10 days to arrive. Item looks rugged enough and shouldn't be too difficult to make water resistant... seal the case two halves and plug the screw heads and led hole job done.

[Adjuster]

I know what its supposed to do, I don't know how it does it, but it sure looks complicated. LOL


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[SpudRider]

Originally Posted by No1Vic

I paid £14.50 for the unit with £5 delivery and added £2.50 for insurance....Only took 10 days to arrive. Item looks rugged enough and shouldn't be too difficult to make water resistant... seal the case two halves and plug the screw heads and led hole job done.

Thanks for posting the excellent photos. That is a well-built unit. I agree, I don't think waterproofing that unit will be the least bit difficult. If you install the unit, please consider posting a thread on the subject, and/or reporting the jumper settings which work for the Zongshen RX3.

[SpudRider]

I have sent another email to Jaycar asking if there is a less expensive shipping option to the United States than DHL. I have also asked for the least expensive shipping cost for sending one unit to the United States.