Shocks

[Marco01]

I was keen to know what shocks other teams (especially in Australia) are running. We're thinking about going fox shocks again but we cant find any without the pro-pedal function. We were also thinking about Penske 7800 or Ohlins ST44's but our limited budjet http://fsae.com/groupee_common/emoticons/icon_frown.gif makes them unlikely. Are they worth the extra cost??? and does anyone know where we can get some 2001 or 2003 Fox Vanilla's??

[jack]

shocks?? http://fsae.com/groupee_common/emoticons/icon_confused.gif

ooohh, you must mean dampers

http://fsae.com/groupee_common/emoticons/icon_biggrin.gif

[Jarrod]

we are running the penskes, and they cost almost precisely the same amount as Fox vanillas, even at the special dirtworks price, the retail price of fox RCs is way higher. (that is austalian prices, i believe the case is different in the US)The penskes don't come with springs, but that is not an issue. Not sure about the ohlins. We decided to go penske when we found out about the pro-pedal junk.

[D J Yates]

I origninally started looking at the Ohlins ST44 damper but then found all their 36 mono-tube dampers. They're a good price, and with external resrevoirs are quite small.

Jarrod, are the penske 7800 emulsion or with a seperate internal nitrogen chamber? As they don't appear to have an external reservoir i figured they'd be quite long.

[Brian Smith]

the 7800 has a separate nitrogen chamber. What is emulsion?

[IsheeM]

From my understanding, emulsion dampers have mixed oil and gas chambers.

[B Hise]

The Ohlins dampers are well worth the money.

[Brian Smith]

you mean they have air bubbles in the fluid http://fsae.com/groupee_common/emoticons/icon_smile.gif

[D J Yates]

Yeah, i read about it whilst writing up my design report last night. As the piston moves during a compression stroke the internal volume of the damper is decreased by the presence of the piston shaft. To allow this, a compressable volume of gas is required. This can either be in a seperate chamber with a floating piston seperating the oil from the gas, or as bubbles in the oil (an emulsion).

As far as i can work out, anything with an external reservoir has a gas chamber and floating piston in the reservoir. Any external adjustment comes from secondary valves between the main body of the damper and the external reservoir. As the 7800 has no external reservoir and no adjustment, i was wondering if it's an emulsion damper.

[DJHache]

We've gone with Ohlins this year and they're bigger than the Risses we used to run (played havoc with our bellcranks). The craftsmanship seems better on the Ohlins and they look a lot more consistent shock to shock and leak-free than the Risses were. I hate to rag on Risse but the dyno graphs they sent us were jokes.

[Nam Tran]

Out of pure curiosity, what is the cost of the Öhlins ST44?

[jack]

ok, it breaks down like this. you can use:

Tanner Gen1
Tanner Gen2
Risse Jupiter-5
Risse Jupiter-5R
Risse Jupiter-7R
Penske 7800
Ohlins Mono
Ohlins ST44
Ohlins $uper bad-a$$

this list does not include mtb. dampers (i.e. fox). the dampers above are listed in order of coolness. some may be swappable with others, depending on length and stroke. feel free to add to this list. don't say i never did anything for ya! http://fsae.com/groupee_common/emoticons/icon_wink.gif

[IsheeM]

From my understanding, you do not have to have a remote reservoir to have a non-emulsion type shock.

[D J Yates]

Correct, you don't. There are loads of dampers with internal reservoirs, but the problem is you can't see an internal reservoir like you can an external resrvoir.

All i knew was that a 7800 has no external reservoir. I was just curious as to wether or not it had an internal reservoir or is an emulsion. Turns out it's a got a reservoir. and so my next question... does that make it quite a long damper?