SEM survey

you lads know that i live in a damp climate and have had a lot of luck with the SEM in my first 3 years of ownership.

as the 'document' says-i drill the bottom of the crankcase and fit a split pin loosely. petroleom jelly the stator. run the wires up through a fresh black tube which i 'shepherds crook' at the top, silicon, and clean all contacts.

no trouble in 3+ years.

does anyone else do the saame end then find that their SEM loves it all! condensation play a part?

let me know?

regards

Taffy

Taffy, Ive owned a '00 FE501 and have never taken the cover off yet, let alone drill holes in it. But the '96 FE600 I was always taking the cover off after every wash.

SEM 1: 2.5 year The cover of every second wash and some thin oil on it
The stator cracked but it worked well till the magnetic material come loose from the rotor.

SEM 2: 4 months before cracking and lack of functionality. The cover of every wash and usage of thin oil as Husaberg recommends.

The quality seems to play a role too.

what i'm trying to find out is which way may be SAVING the ignition units or is it just always bad luck?

regards

Taffy

Taffy, I think it is bad luck / Friday afternoon production syndrome.
My '96 FE600 stator had more rewinds than a Paris Hilton bootleg **** video yet the '00 FE501 as mentioned before, hasn't even had the cover off.

Cheers

ClarkKent

My 2002 case fills with water after rain or washing it. So i remove the cover and spray WD-40 in to displace the water and then put the cover back on.

There is some rust starting to appear on the laminations however.

I lost the o-ring but I think this actually helped the water drain out. The hole in the base thing sounds the best way to let it drain, I spose u could then spray WD-40 up the hole without removing the cover which would help.

Lloyd

Haven't drilled a hole in the cover but I do take the cover off after each ride to inspect for moisture and sometimes give a little spray of WD-40. No problems so far but my bike only has approx. 2,000 miles on it.



Log

Taffy, not sure why my 2002 bike was getting water behind the cover, but after I lost one SEM to apparent corrosion problems, I drilled "the hole" in the cover and have not had a problem since, (with the stator anyway). The stator looks really good since I've done that. BD

another thing. please edit your post if doing things 'your way' cost you an SEM unit. i'm unable to tell from the posts whether you all have experience of the units failing.

cheers BD and mikst-and all for replying.

regards

Taffy

hi Taffy, glad to hear you made it back O.K.!

I have never had moisture or rust in the stator or armature of my 2000 501, but I have had the epoxy crack around a magnet in 1 of the armatures.

Here is a thread where I posted my data.

http://www.husaberg.org/modules.php?nam ... ght=stator

cheers,

Joe

Taffy

Stator failure. It seems that I'm getting a fair bit of knowledge and experience on this failure.

This is what I do for preventative maintenance. I seal the harness loom at the top and where ever water can enter with silicone. I seal the cover to the case with silicone. I throw the oring where the dogs can't find it because it NEVER seals and is always stretched. I removed the cover every oil change to check dust and condensation etc and found very little not very often.

So my 02 501 had about 200 hrs on it when the stator failed on it a year ago to the weekend as Moab. Coinsidence or what, 12 or 18 hr drive and it fails 2 years in a row at the end of the second day of riding!!!! I am charmed or something. However, that bike NEVER had a wet stator, since I live in a near desert environment and I attributed it to vibration and age. Also, sonce my 01 counterbalancer failure, I have been rather timid while hillclimbing, so I never revved the bike hard and absolutely never overrved it like I usually do when hillclimbing. In other words the engine never endured some harsh vibrations.

My 03 failed last Nov, with the same preventions but was hillclimbed more, ie more vibrations.

The stator that failed this weekend was a loaner from an fe400 that had been ridden by Dan Watt in Brazil at the ISDE. The bike had endured bottomless sand and extreme heat. I put approximately 20 hrs on the stator before it failed. No moisture on the stator pads, it looks brand new.

I believe the vibration has more to do with the failure of the stator than moisture. That is not saying that moisture does not speed the failure, more that it is less a factor.

fryguy

I forgot to mention that once the harness was properly sealed, absolutely no water was ever found in the stator housing. It was stream proof and pressure washer proof.

Fryguy

i bought a 2003 FE501e. the dealer told me that the mech there had super waterproofed everything and not to worry about cleaning it like it said in the manual.

then about a month into owning the bike....buuuuuuuuuuurrrrrrrrr like running out of fuel. thought fuel problem. but then it did it again and wouldn't start. lucky i had phone reception where i was and got friend to bring my ute and pick me up.

stator was corroded. casing was not cracked/damaged at all.

with new stator i always pulled the cover after washing, and after every ride where i did not encounter water i pulled the timing inspection cover to allow it to breath and release any condensation while bike still hot. had no worries after that.

another thing to mention is that my friend has a 1997 KTM620/with SEM stator. this bike has a hole in the engine case at the bottom(KTM standard), which is tapped and a small nozzle/spout attatched. he never took his cover off in 7 years until wanted to go riding and had no spark just recently.

so i pulled the stator out for him and it was heavily corroded and casing was split badly. water ran out of the cover .

the interesting part was that the spout in the bottom was blocked with dirt.......and in hindsight he remembered crashing and dirt being pushed around that area a few months back.

so what do i think if i owned a SEM now??????drill the sucker and make sure it doesn't get blocked!!!

Have fun
Jeff

Taffy,

I siliconed the rubber wire grommet when I started noticing moisture. I remove the cover once a month to check for condensation. Clean all surfaces and spray with military spec. water displacer (ZAP IT). Use grease to help hold the o-ring in place as well as help in sealing. Also makes cover easier to remove later, unlike silicone. Still on original '02' SEM --knock on wood. Bike is used for open desert, single track and Supermoto. I live in Arizona so this probably helps, between 10% to 20% humidity most of the time.

02 FX 470 E Still OEM!
Silicone top of wire.
Remove Cover every ride clean and dry.
Applied dielectric silicone grease to stator often, (just a dab will do ya)
Low rev rider!
Stator has a slight burnished color to it?
Fly wheel has had a de-laminating problem?

03 FE 400 E Still OEM
Silicone top of wire.
Remove Cover every ride clean and dry. Alway's has been dry no stock o-ring
Applied dielectric silicone grease to stator often, (just a dab will do ya)
Moderate rev rider (low miles bike)
Stator has had a slight scuffing problem?
Fly wheel has had a de-laminating problem?

my 99 still has the origanal sem stator in it and i had never taken it off until a few months ago when i replaced my sprag bearing seems fine never had a problem :?

FS 650 e 2002 with less than 3000kms, no problems, not opened once.

FinMoto

But it's a dry heat!

You know my story. I ride in the desert with an occasional stream crossing. When my bike was new, I removed the cover 3 or 4 times. I never found any condensation or water marks in the stator. I added my skid plate, which made removal of the cover a chore. I need to remove the skid plate to remove the stator cover. So 6 or 7 months pass, riding 2 or 3 times a week. Then on Thanksgiving, my stator fails on the trail. When I removed the cover, the stator and flywheel had rust marks. What I discovered is that the water enters when washing the bike. I have removed the cover after rides, the stator is dry. I remove the cover after a pressure wash and the stator is wet. The real problem is the stator is on the opposite side of the bike than the kick stand. So when water enters the stator, it forms a puddle in the flywheel and the stator sits in the puddle. I have observed this, so I know this is fact, not speculation. Now, I rarely wash my bike. When I do, I remove the stator and wipe dry, then spray WD-40 on it, and leave it open over night. Dry again and respray the next day, then reassemble it.

My oem stator had endured 120 F ambient temps with us riding very technical singletrack. We would ride trails that were too slow to cool the engine, we were constantly boiling our radiators. Plus the rocks and terrain were far from smooth. I do not think heat and vibration are a major contributor to the SEM failures; unless you get a made on Friday unit (or hungover on Monday unit).

When I install the new stator (the current one is borrowed), I may try the oil bath as we discussed a few months back. I believe that is the solution (poor pun :? )