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Rear Subframe refurbishing service?
Posted: Tue Jul 14, 2015 1:34 pm
by German-Whips
Hi,
I'm looking to get refurbished a rear subframe that I've bought to replace my existing cracked one, as it has some surface rust/peeling paint on it. I'd like to put a fresh one on to tidy up the underside of the car.
Does anyone on here know of someone who does such refurbishing if I send them my subframe, or someone who will PX a subframe for an unfurnished one if I pay for the service?
IIRC there was a member on here called Dan who does this, does anyone know of his username so I can drop him a PM?
Thanks!
Re: Rear Subframe refurbishing service?
Posted: Tue Jul 14, 2015 1:40 pm
by Brianmoooore
DanThe is the man you want. You may want to invest in one of his beams modified for adjustable toe and camber while you're at it.
Re: Rear Subframe refurbishing service?
Posted: Tue Jul 14, 2015 8:39 pm
by German-Whips
Thanks! I remember now it was DanThe!
What is the benefit of the modified beam with adjustable toe and camber over a standard beam?
Re: Rear Subframe refurbishing service?
Posted: Tue Jul 14, 2015 9:28 pm
by ross_jsy
You can adjust the camber and toe. Helpful if you track your car or lower it and need to correct the camber this causes
Re: Rear Subframe refurbishing service?
Posted: Tue Jul 14, 2015 9:29 pm
by Brianmoooore
German-Whips wrote:
What is the benefit of the modified beam with adjustable toe and camber over a standard beam?
Camber decreases (and toe changes as well to a smaller degree) as the rear suspension compresses, and since most E30 owners prefer the suspension to be at least a little lower than BMW intended, so the adjustable beam allows you to reset the suspension angles to what they should be for optimum performance and reduced tyre wear, as well as compensating for any bent trailing arms, (which are by no means unusual).
Re: Rear Subframe refurbishing service?
Posted: Wed Jul 15, 2015 8:44 am
by clarko74
Isn't it the other way around? I always thought that camber increases as the rear suspension compresses due the angle at which the trailing arms to fixed to the rear beam.
Re: Rear Subframe refurbishing service?
Posted: Wed Jul 15, 2015 9:01 am
by DanThe
Replied to your pm mr whips

Re: Rear Subframe refurbishing service?
Posted: Wed Jul 15, 2015 9:53 am
by Brianmoooore
clarko74 wrote:Isn't it the other way around? I always thought that camber increases as the rear suspension compresses due the angle at which the trailing arms to fixed to the rear beam.
Camber decreases as the suspension compresses. It starts at just below zero, and goes more negative as the ride gets lower, which is decreasing.
Re: Rear Subframe refurbishing service?
Posted: Wed Jul 15, 2015 12:28 pm
by DanThe
Or increasing the negative if you like
Re: Rear Subframe refurbishing service?
Posted: Wed Jul 15, 2015 12:37 pm
by clarko74
DanThe wrote:Or increasing the negative if you like
That's the way I was thinking.
Re: Rear Subframe refurbishing service?
Posted: Wed Jul 15, 2015 6:24 pm
by Brianmoooore
If the temperature was -2 degrees and dropped to -10 degrees, you wouldn't say it had increased by 8 degrees!
Sloppy terminology is how mistakes are made.
Re: Rear Subframe refurbishing service?
Posted: Wed Jul 15, 2015 6:55 pm
by DanThe
I think it comes from where people say "you need more camber" (negative)
Or the opposite, "you need to take some camber out"
Re: Rear Subframe refurbishing service?
Posted: Wed Jul 15, 2015 9:21 pm
by clarko74
I get what you're saying Brian but i think most people understand it in the way Dan has described. It may be negative but the angle of the wheel in relation to the road has increased.
If your fridge is at -2 degrees and you want it to be at -8 do you turn it up or down?
Re: Rear Subframe refurbishing service?
Posted: Wed Jul 15, 2015 10:20 pm
by Brianmoooore
clarko74 wrote:
If your fridge is at -2 degrees and you want it to be at -8 do you turn it up or down?
I turn the duty cycle of the compressor up, but the temperature down.
Re: Rear Subframe refurbishing service?
Posted: Wed Jul 15, 2015 10:56 pm
by Rav335uk
Made my night this.

Re: Rear Subframe refurbishing service?
Posted: Wed Jul 15, 2015 10:57 pm
by ajay
Brianmoooore wrote:clarko74 wrote:
If your fridge is at -2 degrees and you want it to be at -8 do you turn it up or down?
You turn the temperature set point down, in turn the compressor runs longer until the new set point is achieved.
Re: Rear Subframe refurbishing service?
Posted: Thu Jul 16, 2015 8:24 am
by daimlerman
It's similar to diff ratio's,a 4:1 is lower than a 3:64......

Re: Rear Subframe refurbishing service?
Posted: Thu Jul 16, 2015 9:44 am
by Brianmoooore
daimlerman wrote:It's similar to diff ratio's,a 4:1 is lower than a 3:64......

Quite correct. 4.1 and 3.64 are both abbreviations of 1 : 4.1 = 0.244 and 1 : 3.64 = 0.275, and 0.244 is lower than 0.275.
Re: Rear Subframe refurbishing service?
Posted: Thu Jul 16, 2015 1:13 pm
by DanThe
Pic for reference, these are sandblasted, primed with zinc rich powder coat and finished with satin black powder coat
