Zero FX as a Trail Bike

Lunch Box

Useful idiot
Greetings, folks. As many of you are aware, I recently picked up a 2015 Zero FX. This bike will be used to zip around town now and then, but its primary use will be as a trail bike and training toy. Having had the good fortune of riding an Alta Redshift a couple of times (thanks Butch!) I wanted to start a thread for the Zero.

Obviously, the foci of the two bikes are quite different. The Alta is made to be a serious MX bike, and does quite well against the 250s on track. The Zero, on the other hand, was really designed as an urban assault bike. The center of gravity is a bit forward, the suspension has significantly less travel than that of the Alta, and the final drive is a belt instead of a chain.

The first step towards converting the bike to a trail bike was to remove the dualsport tires and put on some proper knobbies. The next step was to test the real world range in a trail riding scenario. I should point out that I am a big guy (270 pounds) and I REALLY like to hammer the throttle. This, of course, is a bad combination when it comes to battery life.

Range test number 1:
I took the bike to Metcalf a couple of weeks ago to see how far I could get on a charge during my normal trail riding activities. Here it is in the parking lot before the ride:

Ybvwxo.jpg


The answer was 5 miles. :wow :wtf I'm sure that the battery would have lasted considerably longer, but I managed to snap the drive belt as I landed a jump while on the throttle. Oops.

KNPQ74.jpg


Next order of business: order the chain conversion kit. BARFer Farmer John works at San Jose BMW and was kind enough to order the kit for me. Accessing the front pulley requires removal of the swingarm. Fortunately, it is an easy task. Removal of the front pulley and installation of the countershaft sprocket from the kit proved to be challenging. It is a pretty unique design, to say the least. After much effort and the purchase of a gear puller, I was able to remove the pulley. Installation of the sprocket proved to be equally challenging. Let's just say that my rubber mallet got a serious workout.

Given the fact that the bike is VERY undersprung, I decided to pull the forks and shock and take them to Jason over at JPH Suspension for a re-spring. Yes, the bike is undersprung; I'm not overweight :twofinger :laughing

I should have the boingy bits back on Thursday. My schedule this week is pretty full, but I'm hoping to be able to squeeze in at least a little rip around my neighborhood (bonus for the bike being plated) on Friday morning.

I'll post an update once I finally make it back down to Metcalf for range test number 2.
 
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Lunch Box

Useful idiot
Thanks, guys. I'm looking forward to putting this thing through its paces. I have a quick charger that arrived yesterday from Australia, and I grabbed a generator for camping trips.

Simon, the chain kit has a 520 pitch chain. I figure it will reduce my range and increase noise a bit, but it sure beats snapping belts nonstop. :laughing
 

byke

Well-known member
Did it feel like it had good power for the trails and when you're on it does it feel like a full size bike?
 

Lunch Box

Useful idiot
Can i ride it? I think i have ridden Zeros three times, all very enjoyable.

Absolutely, Butch. No need to even ask. :thumbup

Lemme know (PM?) when your gonna head to Metcalf.
If possible I'll join you on my new (to me) trail bike.

It looks like it won't be until late next week. There is a small chance that I could sneak out on Sunday morning for a quick ride. I'll post in Butch's "Riding Tomorrow" thread if that happens.

Did it feel like it had good power for the trails and when you're on it does it feel like a full size bike?

It has plenty of power, even with my fat arse on it. It definitely feels like a full sized bike.
 
Did it feel like it had good power for the trails and when you're on it does it feel like a full size bike?

A 2014 Zero FX puts out max 70 lb-ft of torque.
The 2013 KTM 450 SX puts out 33.9 lb-ft of torque.

Plenty of power there.

It looks like it won't be until late next week. There is a small chance that I could sneak out on Sunday morning for a quick ride. I'll post in Butch's "Riding Tomorrow" thread if that happens.

I have Wed, Thu & Sundays off. Let me know.
 
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Mistico

Well-known member
Nice Aaron!

The quick charger/generator combo should be nice for full weekends.

Do you know how long a single charge will last yet, or need to wait on chain conversion to get that info?
 

Lunch Box

Useful idiot
Nice Aaron!

The quick charger/generator combo should be nice for full weekends.

Do you know how long a single charge will last yet, or need to wait on chain conversion to get that info?

So far, my only offroad test yielded a result of 5 miles. :laughing

I have installed the chain conversion kit, but am waiting on forks and shock. I should have those back tomorrow. :banana
 

berth

Well-known member
I took the bike to Metcalf a couple of weeks ago to see how far I could get on a charge during my normal trail riding activities.
The answer was 5 miles. :wow :wtf I'm sure that the battery would have lasted considerably longer, but I managed to snap the drive belt as I landed a jump while on the throttle. Oops.

This is what happens when you go and ask Mr. Owl how many licks your Zero can take in a trail riding excursion.
 

HadesOmega

Well-known member
Did you install a rimlock? Or has it got one stock? I'd imagine with the torque you'll rip that stem right off. I guess the good thing about the chain on the Empulse is it could take a beating.
 

Lunch Box

Useful idiot
Did you install a rimlock? Or has it got one stock? I'd imagine with the torque you'll rip that stem right off. I guess the good thing about the chain on the Empulse is it could take a beating.

No rimlock. It doesn't have monster amounts of power, and I haven't had any issues yet.


Quick update:
I did 23 miles in Hollister yesterday and still had 30% charge left. I was riding at a spirited but safe pace and spent the bulk of my time on intermediate and expert trails. The bike did great and it was an absolute blast to ride. It is not as good as my KDX, but it is a very capable trail bike.
 
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