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Re: BC BR Series Coilovers [Re: Nigel] #1547377
18/08/2015 14:31
18/08/2015 14:31
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Originally Posted By: Nigel
Are there any piccies of the Gaz "max caster" topmounts that are available as an option on their coilovers?

Edit - Gaz coilovers with Max-caster topmounts

Just look at the extra offset on the topmounts to create the additional caster - its massively different to the BC topmounts


Unfortunately that view seems to be looking at the front to rear view of the top mount so we don't see how far back they are, but to put it into perspective, to fit the Gaz max caster top mount, you had to shave metal from the rear of the suspension mounting top mount cut out in the chassis!

I think Si (Suba) had them fitted to his coupe so could contribute to the mounting of them.

I did a little calculation, you'd have to lower the suspension approximately 6" to get a 1' shift in caster. I'm no mafs eggspurt but I think I got it right. It would sure look bad ass but you'd be going through a new exhaust every day.

Re: BC BR Series Coilovers [Re: Trappy] #1547378
18/08/2015 14:32
18/08/2015 14:32
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Oh wait, the damper on the right has the other view, you can see the caster quite clearly.

Re: BC BR Series Coilovers [Re: Jimbo] #1547393
18/08/2015 16:35
18/08/2015 16:35
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Staffordshire
Nigel Offline
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Originally Posted By: Jimbo
Oh wait, the damper on the right has the other view, you can see the caster quite clearly.


Agreed - the centre line of the damper rod is WAY behind the centre line of the topmount on the Gaz kit

I've chased Balance Motorsport by email today to get them to chase the BC factory for an update

In the meantime, I thought I'd do some more research to see if anyone else is having issues with BC

Lancer boys aren't impressed - check out the photo part way down the page

Sadly, it appears not to be an isolated incident....

Fairly old thread though, so I guess BC have sorted the issue by now?


[Linked Image]
Re: BC BR Series Coilovers [Re: Trappy] #1547540
20/08/2015 14:50
20/08/2015 14:50
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Staffordshire
Nigel Offline
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UPDATE - I've had a response from Balance - they have supplied me with a technical drawing of the BC topmounts and suggested that I should tell them what changes need to be made, and they will look into having some made.

I think this is a good point for me to hand this line of enquiry over to one of the BC coilover customers - I really don't want to be acting as middle-man if I can help it

Any volunteers?

DOH! - Not Balance - Apex

Last edited by Nigel; 21/08/2015 16:23. Reason: wrong company.....

[Linked Image]
Re: BC BR Series Coilovers [Re: Trappy] #1547583
21/08/2015 06:42
21/08/2015 06:42
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I thought you were interested in buying a set Nigel?

Re: BC BR Series Coilovers [Re: Jimbo] #1547626
21/08/2015 16:24
21/08/2015 16:24
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Staffordshire
Nigel Offline
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Originally Posted By: Jimbo
I thought you were interested in buying a set Nigel?



I was, but I'll wait until the issues have been addressed (or I'll bite the bullet and go for the Gaz setup)


[Linked Image]
Re: BC BR Series Coilovers [Re: Trappy] #1547631
21/08/2015 17:53
21/08/2015 17:53
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Windsor/ Reading
knight7660 Offline
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with the Gaz kit dont you have to modify the chassis at some point like the D" kit which is what put me off.

reading the evo post has made me think twice about ordering the fronts now


LE53 (452BHp & 389ftlb's with Quaife)
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Re: BC BR Series Coilovers [Re: Trappy] #1547633
21/08/2015 17:59
21/08/2015 17:59
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Poland
deannn_20VT Offline
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Yes, you have to cut front suspension turrets

Re: BC BR Series Coilovers [Re: Trappy] #1547659
22/08/2015 18:22
22/08/2015 18:22
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Windsor/ Reading
knight7660 Offline
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such a shame i dont want to cut mine if i can help it. Hope the issues with the BC's are solved


LE53 (452BHp & 389ftlb's with Quaife)
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Audi RS4 B7
Re: BC BR Series Coilovers [Re: Trappy] #1547670
23/08/2015 12:40
23/08/2015 12:40
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I wouldn't worry too much, you are just elongating the hole in the chassis for the damper mounting. If you keep the profile of the original rounded hole then it won't cause any stress or cracks.

Re: BC BR Series Coilovers [Re: Trappy] #1547712
24/08/2015 08:41
24/08/2015 08:41

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So what would the risk be if I mount the BC kit that I've recently got? I've posted a pic with the top mounts and they are asymmetrical.

Re: BC BR Series Coilovers [Re: Trappy] #1547726
24/08/2015 12:00
24/08/2015 12:00
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There's no risk, you may not run as much caster as a standard coupe which would give you less steer ahead if you release the steering wheel. The car may be slightly less stable with less steering feel/weight.

You can still pull the camber in from the top mounts but that's almost working back to front, you'd want less camber with the wheels straight ahead and more when the wheels turned which is where caster is king.

Re: BC BR Series Coilovers [Re: Jimbo] #1547944
28/08/2015 10:02
28/08/2015 10:02
Joined: Feb 2006
Posts: 5,390
Essex
Trappy Offline OP
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Would less castor cause more torque steer?


F****** b****** thing...
Re: BC BR Series Coilovers [Re: Trappy] #1547953
28/08/2015 11:41
28/08/2015 11:41
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Staffordshire
Nigel Offline
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Originally Posted By: Trappy
Would less castor cause more torque steer?


I don't believe so, although less caster makes the self-centring effect less pronounced, which means you can FEEL the torque-steer more easily

Torque steer is caused by many things, but is rooted in a difference of grip between the driven wheels (which could be tyre deflection, surface, driveshaft twisting, geometry etc)

I guess the only time caster could affect torque-steer is if the caster was different on each side


[Linked Image]
Re: BC BR Series Coilovers [Re: Trappy] #1547990
28/08/2015 17:28
28/08/2015 17:28
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http://www.aligncraft.com/terms/terms.html#FrontCaster

Scroll down to caster, while it may not directly cause torque steer, the symptoms may be similar in extreme cases.

Re: BC BR Series Coilovers [Re: Jimbo] #1548007
28/08/2015 23:22
28/08/2015 23:22
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Essex
Trappy Offline OP
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Originally Posted By: Jimbo
http://www.aligncraft.com/terms/terms.html#FrontCaster

Scroll down to caster, while it may not directly cause torque steer, the symptoms may be similar in extreme cases.


Confirmed then. It's definitely squirming and pulling on uneven surfaces now since fitting these coilovers.


F****** b****** thing...
Re: BC BR Series Coilovers [Re: Trappy] #1548018
29/08/2015 06:14
29/08/2015 06:14
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Staffordshire
Nigel Offline
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Quote:
With Positive caster, road surface variations have a minimal effect on the tire, the tire will continue to go straight. When a tire has a Negative caster condition, where the projected steering axis point of load is behind the tire point of contact, a vehicle will have a tendency to be easier to steer but will lack directional stability. A vehicle with negative caster is affected by any road surface variation such as small road irregularities or bumps.


You have about 2.5 degrees positive caster, so you shouldn't really be getting any caster-related squirming - does it happen on and off the power and on a steady throttle?


[Linked Image]
Re: BC BR Series Coilovers [Re: Trappy] #1573365
13/05/2016 05:39
13/05/2016 05:39
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Poland
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BTW, did you guys see Deltapart's review of the current BC Racing coilovers? I was looking to buy a set but now... No ducking way. https://www.facebook.com/delta.parts.3/videos/448819618633450/

Re: BC BR Series Coilovers [Re: Trappy] #1574211
19/05/2016 10:12
19/05/2016 10:12
Joined: Dec 2005
Posts: 2,194
Göteborg, Sweden
Freddan72 Offline
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I never used the softest setting on the rear (for the road/track) so no problem for me.


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Re: BC BR Series Coilovers [Re: Trappy] #1667666
22/09/2023 07:27
22/09/2023 07:27
Joined: Nov 2022
Posts: 6
Kaunas, Lithuania
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Hi, can you tell me how much adjustment is needed to get the ground clearance to be the same height as the original?
Is it difficult to reach later to adjust the rear shocks once they are installed?

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