2021 Husqvarna ebikes

Chrysaor

Active member
Apr 12, 2021
122
126
Switzerland
The 2020and older regular non ebike 36 is up to 180mm, the 2021 and newer 36 is 170mm max and 2021 ebike 36 is 160mm. 2021 and newer have a longer left(air) leg than the damper side also. New 36 also has a rounded and kicked forward lower leg brace, and pretty sure the axle quick disconnect is on opposite side

If it can be useful to somebody else, the 36 ebike can go to 170 or 180mm using a fox36 shaft with a 34 air piston. Unofficial and probably voiding the warranty though
 
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MO1

Member
Dec 16, 2021
62
25
USA
If it can be useful to somebody else, the 36 ebike can go to 170 or 180mm using a fox36 shaft with a 34 air piston. Unofficial and probably voiding the warranty though
Would love to swap my 150 for 170, is this a definite swap? Have you done it? Thanks!!
 
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Bad Mechanic

Member
Dec 17, 2021
82
35
Kensington, MD
Would love to swap my 150 for 170, is this a definant swap? Have you done it? Thanks!!
I think 170mm would start messing with the geometry quite a bit. Part of the reason it rides so well is the long reach and low bottom bracket, and increased the fork length by 20mm would negative affect both of those.
 

jbrown15

Well-known member
May 27, 2020
799
659
Chilliwack, Canada
I think 170mm would start messing with the geometry quite a bit. Part of the reason it rides so well is the long reach and low bottom bracket, and increased the fork length by 20mm would negative affect both of those.

My buddy has a 170mm Fox 38 on his MC7 and absolutely loves it. His current setup on his MC7 now has a 205x65mm DHX2 shock with a Fox Factory 38.
 

Mr-EPIC-3

Active member
Feb 25, 2020
194
125
USA, So Cal
This is an interesting video. It's in German so I can't understand it, but someone broke their Extreme Cross frame in half. From the pictures it looks like a bad weld between the head casting and the top and down tubes.

WOW!
I watched the video and he didn't seem to be doing any big drops or jumps, so I wonder what he was doing when the frame broke:/
 

Swaussie

Member
May 24, 2018
4
2
Switzerland
He said the bike was 2 weeks old and he had been having fun when he made a mistake over a jump when it broke - but he didnt think his mistake was enough to break the frame - that was just a failure of the materials (assume the weld) - it was replaced without question.
 

urastus

⚡The Whippet⚡
May 4, 2020
1,548
995
Tasmania
WOW!
I watched the video and he didn't seem to be doing any big drops or jumps, so I wonder what he was doing when the frame broke:/
That doesn't mean much - 65% of the damage could have already happened, making it weaker. It does look like a manufacturing fault though. Geez, the sort of thing to give you nightmares - what are the chances of coming out of that without big injuries?
 
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Mr-EPIC-3

Active member
Feb 25, 2020
194
125
USA, So Cal
That doesn't mean much - 65% of the damage could have already happened, making it weaker. It does look like a manufacturing fault though. Geez, the sort of thing to give you nightmares - what are the chances of coming out of that without big injuries?
Just from watching the video didn't seem like he was doing any big features, but who knows he could have been doing 20' drops and jumps off camera:). I have an MC-5 and I am doing 6' drops & jumps with no issues. Also could be his weight, more weight more stress on the frame, in the fine print on the Husky spec sheet 130kg (286lbs) max rider weight.
 

Bad Mechanic

Member
Dec 17, 2021
82
35
Kensington, MD
Has anyone upgraded the rear brake rotor from 180mm to 203mm? Did it make a noticable difference with your rear brake?

I'm asking because I'll be upgrading the front from the stock 203mm rotor to a 220mm, and thought I might move the 203 to the back.
 

Mr-EPIC-3

Active member
Feb 25, 2020
194
125
USA, So Cal
Has anyone upgraded the rear brake rotor from 180mm to 203mm? Did it make a noticable difference with your rear brake?

I'm asking because I'll be upgrading the front from the stock 203mm rotor to a 220mm, and thought I might move the 203 to the back.
I put front & rear 203mm floating rotor on my MC-5 and notice improved brake performance over the stock rotors.
 

Bad Mechanic

Member
Dec 17, 2021
82
35
Kensington, MD
It turns out the Husky Mountain Cross has a pretty progressive leverage ratio, and even after upgrading to a custom valved DVO Topaz I just wasn't happy with it's performance, and I'm pretty sure it's because the progression of an air shock combined with the progression of the frame makes it entirely too progressive. A large volume air shock might work, but it seems well suited for a coil shock.

I bought a used Marzocchi Bomber CR for a good deal and will install it this weekend and give it a try.
 

COMOFLO201

New Member
Jul 5, 2022
11
4
MO-USA
I bought the Hard Cross 9 about two months ago and love it. I now have about 250 miles on it and all of a sudden the bike is randomly shutting off. Sometimes it will power right back on, sometimes it takes a few attempts. I've took the battery out so it would reboot the system thinking that might fix the problem but, it came right back today. Has anyone heard of this happening or maybe know why it would be happening. Maybe the power switch is going bad? All the wiring is good, no kinks or cuts, battery seems to be seated properly. Thanks!
 

Mr-EPIC-3

Active member
Feb 25, 2020
194
125
USA, So Cal
My MC-5 was doing that around 500 miles. I pulled the battery and clean out all the dust, use a electric cleaner
CRC 05018 Lectra-Motive Electric Parts Cleaner make sure the battery contacts are clean. Installed Scotch Anti-skid Black Plastic Gripper Pads on to the battery cover, just to eliminate the battery from moving around, also make sure all of the bolts on the battery mounts in the frame are tight, they do come loose, you may want to put some blue loctite on them. Haven't had any battery issues for the last 1200 miles.
 

COMOFLO201

New Member
Jul 5, 2022
11
4
MO-USA
My MC-5 was doing that around 500 miles. I pulled the battery and clean out all the dust, use a electric cleaner
CRC 05018 Lectra-Motive Electric Parts Cleaner make sure the battery contacts are clean. Installed Scotch Anti-skid Black Plastic Gripper Pads on to the battery cover, just to eliminate the battery from moving around, also make sure all of the bolts on the battery mounts in the frame are tight, they do come loose, you may want to put some blue loctite on them. Haven't had any battery issues for the last 1200 miles.
Thanks Mr. Epic, I'll give that a try.
 

Rusty

E*POWAH BOSS
Jul 17, 2019
1,513
1,673
New Zealand
This is an interesting video. It's in German so I can't understand it, but someone broke their Extreme Cross frame in half. From the pictures it looks like a bad weld between the head casting and the top and down tubes.

My initial thought is that the frame was not designed for those forks. A lot of people adding double clamp forks run into various issues, but talking to a couple DH guys, this is known on conventional DH bikes as well. Hope he swapped forks back before trying a waranty clain.
 

COMOFLO201

New Member
Jul 5, 2022
11
4
MO-USA
My MC-5 was doing that around 500 miles. I pulled the battery and clean out all the dust, use a electric cleaner
CRC 05018 Lectra-Motive Electric Parts Cleaner make sure the battery contacts are clean. Installed Scotch Anti-skid Black Plastic Gripper Pads on to the battery cover, just to eliminate the battery from moving around, also make sure all of the bolts on the battery mounts in the frame are tight, they do come loose, you may want to put some blue loctite on them. Haven't had any battery issues for the last 1200 miles.
So I did everything we've talked about here and it worked for a couple days, no problems. Then this morning on the trail, the bike powered off several times and it even threw the E020 error once. R&R'd the battery and the bike came back on but it did turn off a couple more times after that. I did not pull the small wires to the display or motor when I cleaned everything up and applied the dielectric grease because I don't have that tool and didn't want to damage the plugs.
 

Mr-EPIC-3

Active member
Feb 25, 2020
194
125
USA, So Cal
The "E020 – Communication error detected between battery and drive unit. " When I install the battery, I have the eMTB flipped up side down. I leave the upper and lower battery mounts a little loose, then install the battery and make sure it snug (No Battery Movement) then tight the battery mount bolts. Also make sure the power plug on the motor is locked into place.
 
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Mr-EPIC-3

Active member
Feb 25, 2020
194
125
USA, So Cal
Yep, saw that. so when I applied the dielectric grease I did not use it on the battery or battery cradle plug. Should I use it there as well?
I only use the dielectric grease on the power plug to the EP8 motor. I also so install a rubber O-ring on the power plug to the EP8 motor, just to help with keeping water out of the plug connection.
 

COMOFLO201

New Member
Jul 5, 2022
11
4
MO-USA
I only use the dielectric grease on the power plug to the EP8 motor. I also so install a rubber O-ring on the power plug to the EP8 motor, just to help with keeping water out of the plug connection.
Gotcha! I used grease on all the wiring harnesses and the motor power plug. I did not use it on the small wires going from the display to the motor. Wondering if that might help?
 

Mr-EPIC-3

Active member
Feb 25, 2020
194
125
USA, So Cal
Gotcha! I used grease on all the wiring harnesses and the motor power plug. I did not use it on the small wires going from the display to the motor. Wondering if that might help?
I don't use dielectric grease on the connection to the display, but I don't think it will hurt if you use dielectric grease on it.
The other thing is when you installed the 3M padding on the inside of the battery cover make sure it's not where the power button on the battery located.
 

COMOFLO201

New Member
Jul 5, 2022
11
4
MO-USA
I don't use dielectric grease on the connection to the display, but I don't think it will hurt if you use dielectric grease on it.
The other thing is when you installed the 3M padding on the inside of the battery cover make sure it's not where the power button on the battery located.
No powering-off issues since my last post (approx 150 trail miles). I used dielectric grease on every wire with a plug, and the battery posts as well. Seems to be working... thanks all!
 

Mr-EPIC-3

Active member
Feb 25, 2020
194
125
USA, So Cal
No powering-off issues since my last post (approx 150 trail miles). I used dielectric grease on every wire with a plug, and the battery posts as well. Seems to be working... thanks all!
Happy Trails!
PS: I am up to 1500 miles now and no power-off issues, so try to beat that record :geek:
 

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