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Nice bike and great write up! I might investigate that light bar. I lived in Houston in the 60’s & 70’s. When I started racing enduro in the mid 70’s, it was with with a club called Trail Riders of Houston (TRH). It appears they still exist. I lived about 5 miles from Rio Bravo motocross track...

How does one get their hands on Erz SW?

Yes, initially expensive, but not so bad if you recover & reuse. And initially you need to make sure you drain and prep the coolant system if not a brand new build or rebuild. Can’t have much residual water.

I guess to answer your original question, pretty much any engine coolant designed for aluminum components should work. What I don’t like about coolant in general is the corrosive issues when the anti corrosion additives break down. I had a 1986 Honda CR250R that had a magnesium water pump...

Evans seems ideal for an Alta application. Heat load isn’t a problem.

For something that’s supposed to be maintenance free, I was considering a waterless lifetime product like Evans waterless coolant.

2019 EXR, VIN 114, 1208 miles, 57 hours. Lost a front sprocket bolt. Always use loctite! :-)

I also have two wheel sets. I’d love to be able to input sprocket combinations so mileage & speed are reasonably correct for any given sprocket combo. Right now mileage and speed is 20% low. And I’d like to do that from a menu on the display.

I couldn’t leave the HP Pavilion alone. It’s been a slowpoke since I bought it several years ago, lived with it since it was “adequate”, but eventually too many Windows upgrades made it unbearable. So it seemed a good candidate as a garage laptop for redshift_multitool. As I originally reported...

Any links to stats or video on that? I assume it would have to be on par or better than any 125 shifter or TAG kart.

I agree, at least 100. My EXR has no problems hitting 88 in a short distance. I bet the little Grom chassis has a lower drag coefficient, and it’s direct drive (right?) eliminating the extra drag of the gearbox. I’d like to see the Alta motor in a go kart. Pretty sure it would rock.

Ahh, that explains it. Thanks.

Ok, so reading through the responses, if I connect multitool it will download the most recent log file from yesterday’s ride first. I just wanted to confirm the motor tops out @ 13 or 14k RPM. The speed calculator spreadsheet matches 13k RPM too close to be a coincidence, but I thought the motor...

I assume the run I did yesterday is logged. I know that log files download when multitool is connected, but can you target a specific file date range to download? I'm curious what the actual motor RPM was.

2019 EXR, 15/48 sprockets, Shinko 705 tire... today GPS said 89 mph. Definitely RPM/speed limited and not aero limited. Three attempts, 88/88/89 (last one was down hill just to confirm it wasn’t aero limited). Also... It gets to top speed fairly quick.

Well, I installed Oracle VM on my newer laptop, installed multitool, connected to the bike no problem. Not sure what the issue was with the other PC. Settings and process were identical.

To get where I am, I watched both installation videos, following instructions, pausing, completing instructions, every step of the way. No problems up to actually getting my USB to work with VirtualBox. In settings it only allows USB 1 configuration. My PC supports up to USB 3. I was wondering...

Anyone have issues getting the CANUSB to connect to the virtual environment? I get a failed message in the virtual environment even though it connects normally in windows initially. The first time I launched the Alta application it implied the CANBUS adapter was connected (but I wasn’t connected...

I already did “a the test”. While I did use a sprocket calculator to figure out what combo I could use to keep the chain length the same, it verified 15/48 would work relative to 13/53 stock sprockets. I have 18” rim streetish biased tire (Shinko 705). About the same height as my worn knobby...

I used a trail tech on my WR450. My EXR is geared 15/48 with a street biased 18” rear tire. Top speed with gps is 90+ mph (I haven’t had an opportunity to let it get to top speed but should be ~96mph). With 15/48 gearing my speedo reads ~20% low. I asked Alta (before they shut down) if there’s a...