Girvin Pro-forx

[FluffyChicken]

Not actually mine, just some that have been left for me to have a look at, pull apart and document.

Not sure of specific year, these have fancy writing and I've not gone looking yet. The others i've seen pics of have the Girvin flexstem style graphics

So popping this here to keep me at it.

 

[FluffyChicken]

 

[FluffyChicken]

 

[kingoffootball]

I think that's the second generation brace (around 1994?) but the decals look later. There's a similar one for sale here (30 Euros) but with earlier decals:

https://www.2bike.rs/cikloberza/mal...prednji-amortizeri-40/girvin-pro-forx-vintage

 

[FluffyChicken]

So I have the Elastomers/Spring out, the main rod and the top out bumper (found this bumper later).
8mm Allen key at the bottom, 11mm nut at the top ( ~10inch long extension needed).

circlip holding lower/seal on taken out, nice big holes to locate in, unlike damn Rockshox and their tiny ones.
Tried a few attempt to split them with force, can't see it moving, (but it is hot and bright).


Anyone know if anything else is needed to separate lower from stanchion, other than brute force?

 

[FluffyChicken]

@Trebz I'm pretty sure a big fecking hammer and a workbench gap would e eventually pull the seal and bearing out. There's no other way I can see.
But, other than to try, the seal and bushing will be perfectly fine so absolutely no other reason to do it.

 

[Trebz]

Excellent work so far, as expected Fluff's. It's really good that we have this on here, especially with feedback from others and those amazing pics you posted. Thanks buddy.

 

[joglo]

Nice fork, i was recently about to buy a bike with the LT variant, and did a bit of search for information too.
I hope it's OK to add a bit of documentation and a question from my side to this thread.

The Girvin ProForx was introduced in 1993 (as mentioned, with different arch)



Their was also this LT, long travel variant where the casting was going below the axis of the wheel as shown in the ad above.


I'm a bit puzzled still on ProForx in general.

Because we had for very limited time (1993-4) the Girvin ProForx, till Girvin/Offroad/ProFlex was fully concentrating on their Vector fork.

Than, or same time, forks which are sold as just ProForx, without a second brand,
BTW: promised as built in America


and moreover the Answer ProForx model, also just as a second line in their fork portfolio.


Is that an fork from an independent, most likely Taiwanese manufacturer?
Are they all a bit the same, just different variants, evolution levels and different co-branding?

Or was technology and name ProForx licensed to partners like Girvin and Answer? Which have produced that stuff than on their own?

 

[FluffyChicken]

Did of bit of searching too after I packed it away for the night.

They're all the same fork in reality.
The black ones, the whole dropout screws off instead of the flat bottom cap on these.

Also search in the BMX word, once I stopped using Girvin and used Answer it brings up a lot more, 20", 24" versions and again all the same, just less elastomer stack (and length) , they loose the spring.
I have the instruction sheet to put up now too.

Answer I assume bought, acquired, already where, made them for... (will search on this) ? the ProFork and you'll notice the similarity to their Manitou forks they made once they got the license to make Manitou's.
And hence the sudden loss of the Pro-forx name for the better Manitou branding at the time.
All with no evidence just some assumptions.

 

[joglo]

Hi,
just noticed we have even missed another version of the ProForx.
The ProForx from the White Brothers
https://www.retrobike.co.uk/threads/white-brothers-pro-forx-sc70-ul.449355/