BC-BR vs Inverted vs External coilovers on track times?
 

Hi Chaps,

I was wondering. Is there really that much difference in the performance given by the various options offered by BC (as a standardisation).

Has anyone actually tried the different solutions and have any evidence of the external/inverted gaining any laptimes.

I ask as im seriously considering going for a round of Time Attack next year, however i went for the BR series and wondering if its worth going on my upgrade list for external.

Important to point out ill be driving the car too (and hopefully back) from any event i enter.

Cheers chaps.
Id also like to know more about classes at TA if any gurus on here id much appreciate a PM/Chat.

Chris

anyone?

bttt

Worth paying the extra on initial purchase but not worth upgrading if you've already purchased non inverted.

The inverted just have the advantage of not being effected by heat in the brakes and hubs as much. On non inverted the oil in the struts heats up and becomes more compliant. Whereas this doesnt happen as much in the inverted setup.

HTH

Daz

so we are talking more theoretical improvement than actually converting to any better time with either the inverted or the ones with external res?

Correct me if I'm wrong but I believe that inverted struts reduce the unsprung weight because the bulkier part it attached to the car leaving the moving parts of the suspension with less weight. Reduced unsprung weight it good because it allows the wheel to track all the bumps in the road better providing more tyre contact. (The same reason why alloy wishbones are better than heavier steal)

Having said that I can't see that the weight saving is huge and hard to know the effect it has.

The external reservoir give the biggest benefit as they completely seperate compression and rebound damping. Its what I would, and have, chosen for some of my more serious cars.

Are the external resevoir models available for the classic? Looking at the BC website it's only normal and inverted types????

yes there are some external resi ones on ebay for classics.

not sure on the idea of external resi ones where the resi is kept on the strut though, id want them like AST's so the weight was kept off the strut

Yeah but what kinda of improvement are we looking at on track? For a non gob stopper specced car..? Im imaging not much..

The external reservoir allow the car to be fine tuned that little bit further. Whether this is going to be of benefit to you depends entirely on your experience and how bothered you are about fine tuning the vehicle vs just going out and having a hoon.

If you just want to go and play then its of little value, if you want to eek out every half second of performance then theyre a no brainer.