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The predator has 10 inch wheels.
 

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Mostly Harmless
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Right, it has 10" wheels but what he's asking for is the diameter... and if the Trail Tech one works anything like the Pan-O-Ram computer for my mountain bike (they look identical so I bet Topeak makes 'em both) there will be a funky four-digit code that is associated with a specific wheel diameter, which should be around 21" give or take a half inch.

Probably best to put a tape measure on your front wheel and measure its actual height since that will help account for tread squish, then cross-reference it with the manual that came with the Trail Tech Speedo.

Rob
 

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So wouldnt you just put in the TIRE size then? I am just asking cuz i have never installed one of thses. Sounds kinda tricky and from what i have seen they are not very accurate. IMO they are prboably a waste of money. Anyone else have one of these?
 

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The one on my mountain bike is decent.

As for tire size, again, if it's like the one I have, there is a cross-reference sheet that comes with it that gives you a four-digit number that corresponds with various tire sizes.

And, it should be very accurate once you input the tire size.

Rob
 

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i sent an email to trail tech asking them about a tach and this is there responce they sent me


Hello,

We are working on two projects: a tach and a new computer. They will be
separate items.
Both will likely have a somewhat larger profile than the current Endurance
computer. However, we will do everything possible to make the new parts
compatible with the current dashboards. If you look closely at our
dashboards, you will see that the protector for the computer is attached
with four small screws. Most likely we will design our new parts so that
they will attach in the same way.

The only thing that may be a bummer is figuring out how to run the tach and
the computer at the same time. Since the tach will have a speedometer
feature on it, some riders will probably only want the tach. However, it
won't have the distance features.

Let me know if you have further questions about the products. Although we
have no problems answering direct questions about the new products, they are
still in the development phase, and are subject to change. There are also
proprietary issues to consider, so we haven't wanted to blow any horns at
this point.

Best Regards,

Kelly
TrailTech Inc.
23712 NE Canyon Loop
Battle Ground, WA 98604
TEL (360)-687-4530
FAX (360) 687-8164
 

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You take the 20" measurement (size of the rear wheel) multiply that by the metric conversion number they give you in the instructions...something like 52, then you multiply that by 3.14. That's your number you enter. The quad units have a faster processor than the bike units, hence they update quicker.
 

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Hey Rob, can you take a picture of the one that you have on your M.Bike? I'd like to see it. I'm thinking about buying one from Wal-Mart when I get my Pred. Once I get it hooked up, I'm going to calibrate it with a GPS.

Also, are there any plans to upload any new videos of your Pred? I really liked the ones you already have, but I'd love to see one from a frontal view of the Pred pulling the front wheels off the ground!

One more thing (sorry, the ideas are flowing), is it possible to include a "Born On Date" in the registration process of this forum? This would be nice because we wouldn't have to wonder what the born on dates are for everyone's quads, we could just view their profile. Anyone else think that this is a good idea? Or is it just me?
 

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RupeDawg: Here's the one I have on my mountain bike. I haven't done any new videos of the Predator because it's been a while since I've been to Sand Mountain. Maybe I can get more next weekend, assuming they're done fiddling with the front brakes on it. I like your idea about the build date. I will add that in the near future. Heck, I was thinking about also adding a field for the VIN, but I wasn't sure if that could cause people some concern. Or maybe the VIN minus the last six digits, since those are the unique numbers. Rob
 

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There is a difference between the processor speed of the bike speedos and the quad units. I didn't believe it at first, but now that I have one of each, the bike unit refreshes slower than the quad one.
 

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Is it still accurate though?
 

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Not at the higher speeds...it's sloooowww. Works o.k. at slower speeds...like those for a mountain bike.
 

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According to the instruction sheet the number your looking for is the circumfrence of the front tire. What they say to do is mark the ground and the tire with chalk, roll one full turn and make another mark. This distance in millemeters is the number to input.
 

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I installed the trailteck on a buddies quad using the method MOPAR said above. It seems to be pretty accurate within 1-2 mph according to a gps unit. it does not register as fast while accelerating, but seems to serve its purpous quite well.
 
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