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Canbus is both a wire specification (the twisted wires) and the protocol for the data that is sent over the wires. Its all digital instead of analog. In something like an apex you had a bunch of sensors that read from 0-5v and the ecu had to convert that into something meaningful (3.27v = 130...

The spreadsheet on post 37 will get you started, it has links to partzilla for every part, quantities, and prices (at the time) so you know what you are getting into. It loads up online so no need for excel or you can download it. It has been deleted several times by people accessing the link...

Stepping back for a second. If you have another sled with a working O2 sensor, can you plug it into the non-working sled? Or, you can extend the two sensor wires from the working sled with a temporary set of jumper wires to the gauge on your non-working sled, they will be noisy because you...

In really tight spots like that I have used the steel support out of a wiper blade. Most wipers have them. You can check as they help keep the wiper tight to the windshield. They are relatively thin and pretty durable as they are some kind of cheap spring steel. I heat up the end with a torch...

Canbus is a two wire network sending digital signals around instead of analog voltages. Ironically, one way to check a canbus system is the gauge you have. I am not familiar with the O2 sensors and modules. I assume that the o2 sensor is still analog (0-1v or 0-5v). Connects through some kind...

32 pages of knockout kit discussion :) I think it can get wedged it migrates too far as I believe there is a taper to the shaft behind. But if you simply put it back together, it will no longer be flush with the end of the stub shaft. I would try to get it out, it can't be that tight, just...

They have never directly responded to that question in an email, they have at tradeshows.

And their response is that yes, 75% of the studs/lugs are at a 15 deg angle to assist in forward acceleration and 25% are angled to assist in braking. In both cases the lugs are designed so that under acceleration/braking forces they flex back to neutral ( 0 deg) for max penetration. I...

I think it is just a cultural and english translation thing. I think they mean forward (with a quebec accent) as in 'into the ice' whereas most people would describe the orientation as backward, away from the direction of travel. Or forward looking at the top of the track which of course means...

I was wondering that myself and just sent another email to camso.

Everything in these sensor suites (o2, baro, map) is ground referenced, probably including the gauge itself. Check from sensor to ground at the sensor (frame/block/etc) and check from the gauge to ground, and between those ground sources. Any floating of ground between them will cause problems...

The 1066 numbers are different in the hypersports post but these numbers make way more sense. Very impressive.

Weight matters (inertia) but traction and power are more important for sure. Weight also matters in trail riding but it does not trump handling. Also there is a matter of durability. I only calculate/track weight for two reasons, one is that it is an indicator of where a trade-off may be...

The record for the PRO-55 1000' was set there as well. 180.65 MPH with a turbo apex motor, also built by hypersports.

They didn't publish but I suspect it isn't proportionally as fast. You can see the sleds are forced to roll out slowly and then pile on the throttle as they go down the track. The continued acceleration at the end shows just how hard it is to balance traction/acceleration.

Looking at their numbers (both historical and current), the Cat 858 is going to be a runner if they can turn that extra 58cc into 5% more HP. Its quite a bit lighter than the rest even considering it has electric start and ATAC. With standard shocks and pull start it will be very light. Here...

I was going to send them an email to clear up a few things.. Its a B grade effort for sure but at least someone is posting real world weights.

That is the same as the SRX here so its likely they all came that way if they have IQS. What changed over the years here is the rear torsion spring and the front upper control arm as shown in the picture from this post https://ty4stroke.com/threads/lets-talk-suspension.165032/post-1601914...

And "we owe an apology to yamaha"

This conversation circles around every year. I keep coming back to where I started which was as part of a team working in the worst of conditions (powerboat racing both fresh and salt water), it was common practice to A. Run the engines between events, B. completely drain fuel after sitting for...