1. 2 Stroke Husqvarna Motorcycles Made In Austria - About 2014 & Newer
    TE = 2st Enduro & TC = 2st Cross

TE/TC AER fork discussion

Discussion in '2st' started by LandofMotards, Jul 17, 2016.

  1. 87husky500xc Husqvarna
    Pro Class

    Location:
    Dayton NV
    Husqvarna Motorcycle:
    2020 tx300i and a few vintage bikes
    Other Motorcycles:
    77 honda xr-75..
    They are definitely getting good reviews from what I've heard anyways.
  2. robertaccio Contributing Member

    Location:
    San Diego, Ca
    Husqvarna Motorcycle:
    2017 TX300
    Other Motorcycles:
    92BetaZero260, 01YamahaYZ125
    well I went back to the OEM extrapolated (my chart) chart for suspension/chassis balance. I had been running lower pressure up front. That is now out and the chart spec has been followed. However I did open the comp up on the forks to make up for the higher spring rate, higher in the travel set up. The bike works so good now that I'm operating at @ 10 bar but with clickers open comp. Much more stable and controlled into tight corners. I just practice a little front brake trail with one finger to keep er settled. Also with the added air I can drop off high rocks with full bottoming control even with the comp open up.
    Here it is again, if you want to believe me (along with the OEM engineers/testers/Pro inputs)
    I have 48 N/mm rear spring so I'm at compensated 10bar up front (meaning I started at @9.9 bar)
    AER482017TX300SpringRateREVA.png
    Captnemo likes this.
  3. retromlc Husqvarna
    AA Class

    Location:
    Kent,England
    Husqvarna Motorcycle:
    TE 250i 2018
    Other Motorcycles:
    Beta Evo 250 4/
    I'm interested in these, there's a few reviews from Australia mags and fact and fiction.
    Checking pressure before every ride is no big deal, u check, chain tension, oil filter, TUbliss pressure, etc etc before every ride, so checking fork pressure is nothing to stress about.yiu could always fill air with a pump with a moisture filter like they have for air rifles.to clean the air up
  4. fletchman45 Husqvarna
    Pro Class

    Location:
    park rapids
    Simply put....dont be a hater or envious of something you are not sure about....last air forks 2017 tc 250....rebuild at 60 hours...condition at time if rebuild...oil still looked good...fork seals fine...replaced for maintenance reasons only....new 2018 tc 250 forks...18 hours... last race performance Huntersville enduro...2nd place super senior A.....30th overall...how often air pressure checked...lol same as tire pressure...once a month if needed or not...best advantage to AER....simple almost four pounds lighter then a spring fork! My 18 te 250 with explorer fork...PLUSH...not great when pushed....(however a te is porky compared to a tc!)...my AER revalved fork feels better then ANY of my red bike kybs....(they were revalved) as well...and honestly my 15 4cs revalved fork wasn't half bad either...if you need electric start...i think tx 300 would be the ticket...however I prefer the motocross 5 speed (with 13 to 50 gearing) over my six speed te....(I didn't keep it long) hated six speed in woods...extra 15 pounds as well...very nice stock suspension for average rider...i have talked to people who have had the air fork do a sort of collapse in cold weather....i love these forks! I wish they had a tx 150....
    robertaccio likes this.
  5. 95jersey Husqvarna
    AA Class

    Husqvarna Motorcycle:
    TXC310R
    Other Motorcycles:
    2014 Gas Gas 300 XC

    YES. The AER fork is one of the best forks I have ever ridden. I have had KYB SSS with $1000 revalve mods, and I like the stock Air fork better. It is SO plush, yet firm at the same time. It is super light and the front end has race car precision. I bought the TX simply so I could get the fork. I would not buy a TE or any Husky that did not have this fork. Never had any failure, the fluctuating air pressure is a NON-issue. It may increase 2-3lbs from AM to end of day, but it doesn't really effect the plushness of the fork. You really don't need to check it every ride. It does not lose air between rides. This is sitting for a couple weeks. Having the flexibility to change the fork pressure to ride in rocks, then sand or motocross is awesome. Once you have the fork, you wouldn't buy a KTM/Husky without one. Yes that good.
    robertaccio and fletchman45 like this.
  6. robertaccio Contributing Member

    Location:
    San Diego, Ca
    Husqvarna Motorcycle:
    2017 TX300
    Other Motorcycles:
    92BetaZero260, 01YamahaYZ125
    I am 100% with Fletch on these things---once set up they are like air pillows in the heavy load g out stuff and react flawlessly to high speed hits (sharp rocky stuff) all while being noticeably lighter up front!!
  7. dirt addict Husqvarna
    AA Class

    Location:
    Southern Kalifornia
    Husqvarna Motorcycle:
    2014 cr125
    The difference between a nitrogen molecule and oxygen plays a part. Nitrogen is smaller. It requires a tighter tolerance. At least thats what Ive heard.
    I like the air forks so far. I check the pressure at the beginning of each day i ride. I have a set of explore forks too. They work great... imho....
  8. KXcam22 Husqvarna
    AA Class

    Location:
    Kamloops, BC, Canada
    Husqvarna Motorcycle:
    2011 SM630, 2017 300XC
    Other Motorcycles:
    08FZR6;07CRF450;98CBR900RR;02KTM200
    Keep in mind that air is almost 80% nitrogen already. Pressure variations are the same with nit vs air but nitrogen doesn't oxidize oil and rubber seals. Basic physics. Cam
    Picklito and robertaccio like this.
  9. tahoeacr Husqvarna
    B Class

    Husqvarna Motorcycle:
    TE150 '17
    Other Motorcycles:
    KTM,Vertigo,Honda,Husaberg
    Nitrogen molecules are larger. Oxygen has one more proton so the nuclei has a greater positive charge that pulls the protons in closer. Nitrogen doesn't have the water content that you get in air. The water is what expands. If someone didn't like the AER forks because their getting stiffer at the end of a race they should purge the air out and run nitrogen.
    retromlc likes this.
  10. KXcam22 Husqvarna
    AA Class

    Location:
    Kamloops, BC, Canada
    Husqvarna Motorcycle:
    2011 SM630, 2017 300XC
    Other Motorcycles:
    08FZR6;07CRF450;98CBR900RR;02KTM200
    I love my aer but lets be accurate here. Air and nitrogen expand almost the same amount with heat, as per boyles gas law. Basic physics and chemistry. Google the nitrogen institute. Water does not expand until it approaches vapour temp (boiling). If your forks get over 212f there might be other issues. This is not a discussion for here. I would rather talk about diy valve stack changes to tweak the fine aer for roots and rocks. Cam
    Picklito likes this.
  11. 95jersey Husqvarna
    AA Class

    Husqvarna Motorcycle:
    TXC310R
    Other Motorcycles:
    2014 Gas Gas 300 XC
    Sorry this is not accurate. That is why they put nitrogen in tires now because it expands far less than air. I have nitrogen in my trailer tires and wether it is 50F or 85F out the pressure is relatively consistent. In my air forks if I put in 140lbs at 80F and the temp drops to 55F overnight, the pressure drops like 5lbs, and does the reverse the other way around.

    In the AER, it really isn't an issue because unless you keep your bike in a refrigerator a temp variant of 10-15 degrees is not enough to cause a major spike in pressure. So say the day starts out at 75F in the AM, but then gets to 85F in the PM, you may see an increase of 1-2 PSI but nothing that will effect the way the suspension works. Contrary to what you hear 2 PSI has little effect on the performance of the air fork. I found you need to go 5 PSI to notice a difference.
    robertaccio likes this.
  12. KXcam22 Husqvarna
    AA Class

    Location:
    Kamloops, BC, Canada
    Husqvarna Motorcycle:
    2011 SM630, 2017 300XC
    Other Motorcycles:
    08FZR6;07CRF450;98CBR900RR;02KTM200
    My chem and physics is rusty but this is from the Nitrogen institute.

    What are the effects of temperature change on my nitrogen filled tires?
    The pressure in nitrogen filled tires will change when the temperature changes, just as it does with air filled tires, because nitrogen and oxygen respond to changes in ambient temperature in a similar manner. For example, when your vehicle is parked it will lose a similar amount of pressure for every 10 degree change in temperature, whether the tires are filled with nitrogen or air.
    The calculations for this change are based on the Ideal Gas Law. A good rule of thumb is this: For every 10 F degree change in temperature, the pressure will change by 1.9%. If a tire is filled to 32 psi at a temperature of 75 F degrees and the temperature drops 10 degrees, the tire pressure will drop to 31.4 psi; a difference of .6 psi. If a 100 psi tire is filled at 75 F degrees and the temperature drops 10 degrees, the tire pressure will drop to 98.1 psi; a difference of .9 psi.
    Picklito likes this.
  13. retromlc Husqvarna
    AA Class

    Location:
    Kent,England
    Husqvarna Motorcycle:
    TE 250i 2018
    Other Motorcycles:
    Beta Evo 250 4/
    I thought they used nitrogen because the molecules are bigger and they leak down less.
    Picklito likes this.
  14. robertaccio Contributing Member

    Location:
    San Diego, Ca
    Husqvarna Motorcycle:
    2017 TX300
    Other Motorcycles:
    92BetaZero260, 01YamahaYZ125
    Let's not be brain surgeons just use the WP air pump record your changes/settings and get your spring rate setting (because that's what the air is just a spring rate), mine has climbed as much a 5psi with a notable feel change , but now we are in a much more constant temp season here so I have seen the rise be noticeable on the gauge at a few psi but not feel noticeable as stated above. a few psi no worries. just set a little bit low to compensate for frictional heat and OAT (outside air temp) and on site for local altitude. And ride the thing.
  15. KXcam22 Husqvarna
    AA Class

    Location:
    Kamloops, BC, Canada
    Husqvarna Motorcycle:
    2011 SM630, 2017 300XC
    Other Motorcycles:
    08FZR6;07CRF450;98CBR900RR;02KTM200
    Exactly. I am quite happy with the aer and i havent noticed too much pressure rise in action, but slower single track. I get no pressure loss between rides. Working on opening up the comp and then increasing the pressure for nice rock compliance. I need to mate them to a proper rear spring. Mine is 2 sizes soft for my lardness. Cam.
    robertaccio likes this.
  16. robertaccio Contributing Member

    Location:
    San Diego, Ca
    Husqvarna Motorcycle:
    2017 TX300
    Other Motorcycles:
    92BetaZero260, 01YamahaYZ125
    balance is so important. and that 35mm 105mm sag recommendation from Husky really is spot on, just match that spring rate up rear to front and find the sweet spot using clickers. Like I said I'm now using the chart for balanced spring rate setting and then using the clickers to make it move where I want it. Remember that clickers/valve setting will hold up suspension in the travel. I like open comp up front with open reb out back for turning.
  17. KXcam22 Husqvarna
    AA Class

    Location:
    Kamloops, BC, Canada
    Husqvarna Motorcycle:
    2011 SM630, 2017 300XC
    Other Motorcycles:
    08FZR6;07CRF450;98CBR900RR;02KTM200
    I am looking forward to getting it balanced. Cosmokenny is the same W as me (honest its all the tools and water I carry) so his 5.0kg/mm spring should be perfect and then I can set the AER to match. Your chart is very handy. Cam.
  18. omamari Husqvarna

    Location:
    Auckland, New Zealand
    Husqvarna Motorcycle:
    2017 TX300
    Other Motorcycles:
    KTM540EXC,Suzuki GSF250, Ossa280i
    Hi Team

    First time poster. I have a 2017 TX300 with... the AER48s. Going great - until they lost pressure. May have been because I transport without a fork saver ( I won't from now on! ), may be random, may be because I bottomed out at the MX track, or maybe I bottomed out because I already lost pressure. Anyway, here I am. Sad. Bike has around 95 hours.

    Has anyone rebuilt these, and could provide some pointers? Or know of any instructions to rebuild the air cartridge? I assume the X ring seal has gone. See article: https://transmoto.com.au/wps-air-fork-improved-2018/ Any idea where I can order parts from?

    The local Husky dealer which I never go to, because a) they are hopeless, b) they are expensive and c) I like doing my own work - didn't know what an air fork was, and didn't know how to service them. Go NZ.

    Thanks heaps 20190620_080712.jpg
  19. Ward125s Husqvarna

    Husqvarna Motorcycle:
    Tx 300
    Other Motorcycles:
    350 sxf
    Had my 18 lowered 3/4 of an inch (I'm 5'7"). Wasn't looking to touch the ground. I wanted to be able to leverage the bike better. Was told by many suspension companies that lowering would be permanent. Found a local guy who said that was incorrect, so I gave it a shot. Explained the bike needed to be valved off-road, but occasional moto as well. I really liked lowering the bike, but the valving was more impressive. Action was smoother than stock. Happy with the way the bike motos and rides off-road.
  20. ptkatoomer Contributing Member

    Location:
    San Diego area
    Husqvarna Motorcycle:
    None
    Other Motorcycles:
    2017 ktm 300 xc, 2015 ktm 500exc
    Curious who did your suspension?