[Gorse]

What sag are you running on the rear shock? The Fox book-of-words suggests 9.5mm (0.38") for the Float AVA (1.5" travel). I've got the shock at 230psi and it's still down at about 12mm sag... (I weigh 195 kitted up).
Still rides too soft, but the old Fox pump won't stand for much more...

 

[Rev.Chuck]

That is a little to much sag, about 30%, but when you say to soft could it be compression damping you need to up. If the shock won't take any more air this might be, not ideal, but your only choice. At work tomorrow I will see if I can find out something.

 

[Gorse]

Cheers Rev. You work in a shop that sells IH?
I don't think think the AVA Float R on the Expert has any external compression adjustment. I'm surprised at the high air pressures needed to achieve 25% sag. But then, the leverage ratio on the HP design is quite high... (Makes sense when you think about it - 5" travel from a 1.5" stroke).

 

[Rev.Chuck]

I don't work in a shop that handles IronHorse, but no one had answered your question so I thought I would take a crack at it.
The Fox shock will handle 300psi. so you probably just need to put more air in it. I tried on a bike in the shop with a really old Fox pump and you should be able to do it.
If this doesn't work you ccan contact the product dept. at todds@ironhorsebikes.com or in New Zealand 64-4589-4535
You live in a really beautiful country, my wife wanted to honeymoon there, but we both work for bike shops so we went out to eat and called it a deal.

 

[Rev.Chuck]

Look in the lounge, there is a post on there about setting up the Hollowpoint susp.

 

[-BB-]

I had it as high as my shop guy coudl get it (185 or 285..I forget) and it was still a little too much sag. (I'm 185lbs)

 

[Gorse]

Originally posted by Rev.Chuck

The Fox shock will handle 300psi. so you probably just need to put more air in it. I tried on a bike in the shop with a really old Fox pump and you should be able to do it.
If this doesn't work you ccan contact the product dept. at todds@ironhorsebikes.com or in New Zealand 64-4589-4535
You live in a really beautiful country, my wife wanted to honeymoon there, but we both work for bike shops so we went out to eat and called it a deal.

Yeah, a new pump would better cope with the job. Just read a post by DW saying he uses a 900 pound spring on his Romic suspended HP and only weighs 165, so I guess I'll just keep pumping.
I reposted on hcor.net and Todd replied with some useful setup tips.
(http://www.hcor.net/forum/viewtopic.php?p=102717#102717)
Not sure what he means when he talks about the clearances; nothing seems ready to collide with anything else when the shock is fully compressed at max travel setting.
I take it he is recommending the AVA adjustment should be used to reduce the stroke length in order to increase the spring rate??

Thanks for your compliments on NZ. We like it here, come and visit anytime, we need the overseas currency.

 

[Rev.Chuck]

If I understood him(Todd) correctly, this shock works like a fifth element or Manitou swinger. The AVA adjustment reduces the volume of the air spring chamber. This makes it more progressive. The initial spring rate is the same but it ramps up, gets stiffer, quicker. So it would soak up small bumps easy but stiffen on the big stuff enough to not bottom out.
If I had any currency I would take it overseas.

 

[datamike]

Rev,

The AVA does NOT work like the fifth element or swinger. Those shocks rely on very specific technology in an attempt to mask pedal induced bobbing. The AVA simply allows for the adjustment of spring progression (or ramp up) as you stated.

Gorse, I'd have to disagree with your post after doing some experimentation last night. On my bike (2003 team hollowpoint) the horizontal member in front of the rear wheel will smash into the seat tube at full compression.

I am guessing this is why IH doesn't recommend running the AVA very open; they don't want it to hit. The references to "close tolerances" and "reducing travel" also hint at this.

Michael

 

[Rev.Chuck]

The AVA does NOT work like the fifth element or swinger. Those shocks rely on very specific technology in an attempt to mask pedal induced bobbing. The AVA simply allows for the adjustment of spring progression (or ramp up) as you stated.

Aaahhh, I haven't seen an AVA model. I just have straight Floats. From the description I thought it might be a liscenced Fifth Element(Like the Swinger)