K2 / Proflex Riders Group

General => Tech Forum => Topic started by: pinion on October 04, 2007, 11:47:30 am

Title: Mega Air fork Q's
Post by: pinion on October 04, 2007, 11:47:30 am

Hi all,

I'm thinking about picking up a used Mega Air fork, but I'd like to find out a few things about them first.

Can any 75mm Mega Air be converted to 100mm?

How hard are they to service?  Do they use relatively easy to find standard seals and o-rings?

Are they reasonably durable?  I'm pretty light (140 lbs) and I don't do big drops.

I'd be going from a crosslink, and I'm mainly looking for a light 100mm fork that I can afford.  I have heard some good things about these.

Thanks a lot!

Frank

Title: Re: Mega Air fork Q's
Post by: Simon on October 06, 2007, 08:43:12 pm

Great fork but not all mega-air forks are convertable to 100mm,
you need to find out which one's you would be getting. I think if they have grease ports on the sliders then they are the model that can be set to 100mm travel.

Simon.

Title: Re: Mega Air fork Q's
Post by: shovelon on October 07, 2007, 09:19:38 am

Simon is right. Only the VTO models are extendable by removing the plastic spacers. And the grease ports were added at the same time.

What I can tell you by my experience with them is that they need regreasing at the slider bearings/bushings quite often, like once a month. Hence the ports.

And they have a tendency to leak air. Of the two I have, one holds air for one ride, the other won't hold air period. But I will have them both sorted at some point.

There is a big problem with large air slider o- rings too. Just about all of them made now are l SAE/metric compatible. Which means that the SAE tolerance has been dropped to the low end which is the metric high side. Now the o-rings are not big enough in diameter to hold pressure.

I just happened to find a pair of new/old/stock o-rings in the parts bin at an auto parts house that had some  air conditioner spares. Only way to measure is with a micrometer.

Other than that, when they are working well, they are great.

Terry

Title: Re: Mega Air fork Q's
Post by: pinion on October 07, 2007, 08:52:45 pm

Thanks for the feedback, guys.  It looks like the one on Ebay isn't convertible to 100mm (no lube ports that I can see).  I'm probably better off saving up for a more up to date 100mm air fork, but it's tempting to keep the fork "in the family".

Frank