video title: World's First Harescramble Win on Electric Dirt Bike

[MotoMinded]

 

[MotoMinded]

point in the video of battery swap

 

[MotoMinded]

About the bike

 

[DonCox]

I think Mark at XEMX1 is really on to something with this quick change battery system. XEMX1.com has more information. Ask him questions on that site.

 

[C5tor]

Definitely a sweet battery change system. Nice overall setup as well.

Hope there is a part two to the vid.

 

[DonCox]

Definitely a sweet battery change system. Nice overall setup as well.

Hope there is a part two to the vid.

I don't know if they had a quick change battery on the gopro. I'll check with Mark.

 

[chrisflysit]

That guy needs a horn.

 

[DonCox]

This was Sportsman 2 class.

 

[Philip]

This was Sportsman 2 class.

View attachment 9638

Oh wow! He won the race by 5 minutes!

Yamaha Corporation received more credit than it deserved, LOL!

 

[C5tor]

This was Sportsman 2 class.

View attachment 9638

Nice! 5 minute win, even with battery swaps! I am curious how many batteries they had, and what % each lap used. I am sure that sand was pretty draining. Each lap was only 15 minutes. So did they have 5 batteries, or only 2 or three, which they re-charged between laps?

 

[XEMX1]

Yes, Because he raced on Saturday, we had 8 batteries on hand. The Bike Shawn raced was built for Brian Smith.
I made 4 batteries for Brian to race a full hair scramble, but Brian and I race against each other on Sunday.

Each of the five batteries used by Shawn had approx. 55% left of useable power left. These are only 4.3 KW batteries
and when doing our tests/practice he had full power for about 25-30 min. After that he started to feel a slight drop.
Our goal is to have peak power through the race, so we opted to swap every lap. Fastest pit stop Saturday was 8 sec.

In the Sunday race I can go 12 miles/per lap on the same batteries without every feeling a drop. Just shows how hard
Shawn is really going.

Myself, Zack and Shawn

 

[Number Six]

Congrats on the great result & great build.
The swappable battery looks to be faster than adding petrol in an ICE bike !
Whats the bike weigh ?
How waterproof is the quick battery swap arrangement ?
.

 

[B. FRANK]

excellent!!! even quicker battery swapping than on a Sur Ron. I sure hope people(and I mean the industry) realize the importance of quick battery changes. I really could see gas stations having battery swap stations like bbq grill propane tanks have. if the industry, moving forward was to grasp the concept and follow this lead they could effectively market electric touring bikes as well as all other types. I was born in 1958 and witnessed the evolution of plastic, the moon landing, first back flip on a motorcycle and now the eventual dominance of the electric engine(motor). what an exciting time to be alive. kudos to the builders of these amazing bikes and to the riders who put them on the podium.

 

[XEMX1]

Congrats on the great result & great build.
The swappable battery looks to be faster than adding petrol in an ICE bike !
Whats the bike weigh ?
How waterproof is the quick battery swap arrangement ?
.

The XE4 #333 is 213 lbs, with the full Metec Titanium Package. But because he is running bib's
it is heavier than the XE4 #4 bike at 210 lbs. The 4.3 KW packs are 48 lbs. The setup is almost perfectly
balanced in the frame, so the extra weight is virtually unnoticeable when riding.

These are prototype batteries and they are NOT waterproof. Splashed many times through mud and water to
the axels, but don't go any further at this point. I remove the batteries and the rest of the bike I can pressure
wash without any issues. The cheap gauge and switches, are the weakest link right now. Everything else is potted.

Tucker from Electric Cycle Rider came to FL and did some test rides and a Photo shoot. Watch his youtube page
a keep a look out for his review.

 

[Philip]

The XE4 #333 is 213 lbs, with the full Metec Titanium Package. But because he is running bib's
it is heavier than the XE4 #4 bike at 210 lbs. The 4.3 KW packs are 48 lbs. The setup is almost perfectly
balanced in the frame, so the extra weight is virtually unnoticeable when riding.

Which "extra weight" are you talking about? LOL!
This is almost the lightest full-size bike around!

Even if the battery were increased to 5.8 kWh, this bike would still be 30 lbs lighter than the Alta. How can this be?!! Where are those extra 30 lbs of fat on the Alta that we didn't know about?

 

[Number Six]

Which "extra weight" are you talking about? LOL!
This is almost the lightest full-size bike around!

Even if the battery were increased to 5.8 kWh, this bike would still be 30 lbs lighter than the Alta. How can this be?!! Where are those extra 30 lbs of fat on the Alta that we didn't know about?

& with twin radiators full of coolant no less !
Astonishing.

 

[Warren]

This was Sportsman 2 class.

View attachment 9638

So What!

 

[Number Six]

So What!

It's relevant from the standpoint of ;
Sportsman 2 class winning lap times were around 16 minutes per lap, the A & AA classes were 25 minute laps at the pointy end. ( shortened course for S2, but 5 laps total )
Shaun Clarke is a AA level rider, so it's not surprising that Shawn won handily even with 5 stops.
The event highlights a few things ;
1 - A rider like Shaun Clarke imparts a higher load on machinery than most ever will - a stern ( & successful ! ) test of the XE4's capability & reliability.
2 - E bikes are progressing to a point where their performance can equal or exceed that of an ICE machine if a thoughtful, focused build.
3 - range limitations are still very evident, especially if weight considerations are a forward part of the design philosophy.
I'd venture that builders are impatiently waiting on the next generation of batteries ...
.