Go Back   Team-BHP > Under the Hood > Technical Stuff


Reply
 
Thread Tools Search this Thread
Old 2nd April 2011, 18:40   #16
Distinguished - BHPian
 
condor's Avatar
 
Join Date: Jun 2006
Location: Speed-brkr City
Posts: 10,153
Thanked: 3,433 Times
Default yes, wider tyres ..

Quote:
condor : The corner/edge of the rear tyres are got scarred during my last trip.
GTO : Wider tyres?
Yes -185, instead of the stock 175.

Had not seen how much the shocks were sitting down till during a break after completing abougt 80% of the journey. But by then the tyres had twice scraped the edge of the wheel arch. Each time at 100+ and when coming out of mild un-dulations in the road.
condor is offline   Reply With Quote
Old 2nd April 2011, 18:41   #17
Distinguished - BHPian
 
SS-Traveller's Avatar
 
Join Date: Jan 2009
Location: New Delhi
Posts: 6,527
Thanked: 10,288 Times
Default Re: Coil Spring Adjusters : VFM Fix for the Honda Civic's (lousy) soft rear suspensio

Quote:
Originally Posted by Sutripta View Post
Maybe the warnings about tyre wear and suspension geometry were put in by the legal department!

Quote:
I'm sure they'd use some sort of leverage. More than just finger squeezing.

Again, Rush - please describe the details about how it was installed.

Quote:
In effect converting it into a dual-rate coil spring (rather than a rising-rate coil), is that right
Don't think so.
So this works on the principle of adding preload to the spring only? It doesn't look that way...

IMO, for a particular coil, the interposition of a compressible rubber strip in between the coils increases the spring rate for that coil (irrespective of whether it is installed at the top or bottom of the spring), without changing the spring rate of the other coils - which is how a dual-rate spring is supposed to work anyway.

Last edited by SS-Traveller : 2nd April 2011 at 18:42.
SS-Traveller is offline   Reply With Quote
Old 2nd April 2011, 19:03   #18
Senior - BHPian
 
Join Date: May 2007
Location: Bangalore
Posts: 3,649
Thanked: 242 Times
Default Re: Coil Spring Adjusters : VFM Fix for the Honda Civic's (lousy) soft rear suspensio

I would say chaps, very innovative smart thinking by someone, without doing much of a mod job. But have some Questions and thoughts :

Questions :

- Seems like a Free size built to suit every coil spring (or am I wrong ?)
- Whats the break load it can sustain (for eg, can you put this in a 2.5 tonner Safari and carry it ??)

Thoughts:

- Quite a DIY job, easy in - easy out
- Good to get instant GC increase too.
- Like someone mentioned, it doesnt have any locks, God forbid if it slips off, that too only from one of the springs.
- Will impact the handling under high speeds.
- Aerodynamics should also be a concern.
- Life should depend on the Vehicle its used on, heavier vehicle should lead to lesser life.
dadu is offline   Reply With Quote
Old 2nd April 2011, 19:20   #19
Distinguished - BHPian
 
Join Date: Jul 2009
Location: Kolkata
Posts: 3,388
Thanked: 1,844 Times
Default Re: Coil Spring Adjusters : VFM Fix for the Honda Civic's (lousy) soft rear suspensio

Quote:
Originally Posted by SS-Traveller View Post
IMO, for a particular coil, the interposition of a compressible rubber strip in between the coils increases the spring rate for that coil (irrespective of whether it is installed at the top or bottom of the spring),
Yes

without changing the spring rate of the other coils
Yes

- which is how a dual-rate spring is supposed to work anyway.
The second rate will come into play when the 'normal' coils are coilbound, and can no longer act as springs, but the tweaked coil still has some travel. I think the normal suspension will hit its bumpstops before coils become coilbound.

Regards
Sutripta
Sutripta is offline   Reply With Quote
Old 2nd April 2011, 19:20   #20
GTO
Team-BHP Support
 
GTO's Avatar
 
Join Date: Feb 2004
Location: Bombay
Posts: 45,691
Thanked: 75,765 Times
Default Re: Coil Spring Adjusters : VFM Fix for the Honda Civic's (lousy) soft rear suspensio

Quote:
Originally Posted by mdsaab View Post
Do we order these adjusters online or are they available at stores in Mumbai and Pune? Would like to fit them, to get the HIGH back on our highway drives. Also regarding fitting them, can Honda install them? or do we need a specialist?
I suggest you wait till I complete atleast 5,000 - 10,000 kms (including a couple of highway runs) before going ahead with the install.

Quote:
Also could you please reccomend how to choose the size we would need? 1 inch did the trick for you.
Best to speak to the manufacturer : Darryl 98210.47448 / dxmenezes@yahoo.co.uk Psycho said 1 inch is best for the Civic.

Quote:
Originally Posted by Sutripta View Post
But reversible, which is a huge advantage. Should make the handling sportier.
Quote:
From my experience of polymer products made here, I would change it every year, at most every two.
Thanks!

Quote:
Originally Posted by SS-Traveller View Post
Nor would it raise ride height to a large extent in unloaded condition, the trick being to choose the right width of material, corresponding to the space between each coil.
He's still recommending 1.5, but I'm happy with 1". The car is rarely loaded with 5 + luggage anyways.

Quote:
I wonder why tyre wear should be an issue with using this
Don't quote me on this, but IIRC, it was mentioned that the camber changes slightly.

Quote:
Originally Posted by Jaggu View Post
Let us see how this mod works out in the long run, my only worry is the additional strain on the spring, but shouldn't be a big one.
My only concern too. Time will tell.

Quote:
Originally Posted by SS-Traveller View Post
I presume the install happens without removing the coil assembly from the car, but after jacking up the body only - allowing the spring to be at full stretch without vehicle load on it (but a little pre-compressed as the original fitment would be).
Exactly. The coil was NOT removed. The car was lifted up on a workshop hydraulic lift.

Quote:
And what was the change in suspension geometry noticed, when wheel alignment was checked after installing the device? Rush, could you enlighten us on this please?
Getting the wheel alignment done on Wednesday; will update.

Quote:
OT: I mistook the fellow's shoes for some kind of suspension component at first glance!


Quote:
Originally Posted by Jaggu View Post
One doubt, does it have a stopper or something to keep it in place and prevent slipping down the coil?
Nope. Should it? Is there a chance of it moving down the spring order?

Quote:
Originally Posted by condor View Post
Yes -185, instead of the stock 175.
How many kms on your existing suspension? My friend's Ikon runs 185 without issue. What's your tyre profile?

Quote:
Originally Posted by dadu View Post
Seems like a Free size built to suit every coil spring (or am I wrong ?)
He has a variety of sizes; says to choose them depending on the gap in your coil springs. IIRC, the max was 2 inches.

Quote:
Whats the break load it can sustain (for eg, can you put this in a 2.5 tonner Safari and carry it ??)
Will ask him and update.

Last edited by GTO : 2nd April 2011 at 19:23.
GTO is offline   Reply With Quote
Old 2nd April 2011, 20:32   #21
Distinguished - BHPian
 
condor's Avatar
 
Join Date: Jun 2006
Location: Speed-brkr City
Posts: 10,153
Thanked: 3,433 Times
Default Re: Coil Spring Adjusters : VFM Fix for the Honda Civic's (lousy) soft rear suspensio

Quote:
Originally Posted by GTO View Post
How many kms on your existing suspension? My friend's Ikon runs 185 without issue. What's your tyre profile?
Done 21000 km. I'm running on 185/60 R14 (Stock is 175/75 R13). So only difference is the extra width.

But that day the car was really loaded. The boot was full, and I had stuff in the co-driver seat too, apart from 2 passengers in the back. The rear wheels were looking exactly like on your Civic here.
condor is offline   Reply With Quote
Old 3rd April 2011, 09:44   #22
Distinguished - BHPian
 
sgiitk's Avatar
 
Join Date: Dec 2007
Location: Kanpur
Posts: 6,927
Thanked: 3,474 Times
Default Re: Coil Spring Adjusters : VFM Fix for the Honda Civic's (lousy) soft rear suspensio

Very interesting. Maybe godsent to all of us struggling with the rear end of the Civic - even more so the pre 2009 owners.

I will say, keep and eye for further experience. I am adding a link to the Civic maintenance thread.
sgiitk is offline   Reply With Quote
Old 3rd April 2011, 10:22   #23
Senior - BHPian
 
mdsaab's Avatar
 
Join Date: Jul 2008
Location: Pune
Posts: 1,629
Thanked: 445 Times
Default Re: Coil Spring Adjusters : VFM Fix for the Honda Civic's (lousy) soft rear suspensio

@GTO ~ thanks, will await your future report before taking the plunge. Here's wishing you take longer drives and maybe a golden quadralateral endurance run to complete the 5 - 10k kms Asap.
i know a 400km drive is coming up soon.
mdsaab is offline   Reply With Quote
Old 3rd April 2011, 11:12   #24
GTO
Team-BHP Support
 
GTO's Avatar
 
Join Date: Feb 2004
Location: Bombay
Posts: 45,691
Thanked: 75,765 Times
Default Re: Coil Spring Adjusters : VFM Fix for the Honda Civic's (lousy) soft rear suspensio

Quote:
Originally Posted by GTO View Post
Nope. Should it? Is there a chance of it moving down the spring order?
Jaggu, his answer : There is no stopper. That's the reason I suggest a tight fit. Once the soap dries, the rubber grips the spring tightly enough.

Quote:
He has a variety of sizes; says to choose them depending on the gap in your coil springs. IIRC, the max was 2 inches.
Correction : His size ranges are from 1/2 inch to 2.5 inch...the latter is for SUVs.
GTO is offline   Reply With Quote
Old 3rd April 2011, 11:33   #25
Senior - BHPian
 
sumeethaldankar's Avatar
 
Join Date: May 2007
Location: Mumbai
Posts: 2,487
Thanked: 841 Times
Default Re: Coil Spring Adjusters : VFM Fix for the Honda Civic's (lousy) soft rear suspensio

I was up a Automech (Lower parel) yesterday for a muffler change on my 800 and Vivek introduced to me the coil spring thingy.Its costs around 4500 bucks for all 4's and they are giving a 5 year warranty(don't remember the max kms) on the same.

He even showed to me the adjusters fitted on the Automech's owners Innova.Vivek mentioned the adjuster would help prevent the vehicle from bottoming out and improves ride and handling.
sumeethaldankar is online now   Reply With Quote
Old 3rd April 2011, 12:04   #26
Senior - BHPian
 
iTNerd's Avatar
 
Join Date: Apr 2007
Location: Imphal/Noida
Posts: 1,058
Thanked: 448 Times
Default Re: Coil Spring Adjusters : VFM Fix for the Honda Civic's (lousy) soft rear suspensio

This is great boon and tweak for civic owners and I hope this is NOT an April fool prank!
iTNerd is offline   Reply With Quote
Old 3rd April 2011, 12:48   #27
GTO
Team-BHP Support
 
GTO's Avatar
 
Join Date: Feb 2004
Location: Bombay
Posts: 45,691
Thanked: 75,765 Times
Default Re: Coil Spring Adjusters : VFM Fix for the Honda Civic's (lousy) soft rear suspensio

Quote:
Originally Posted by sumeethaldankar View Post
He even showed to me the adjusters fitted on the Automech's owners Innova.
Yeah, Automech & N1Racing are the Mumbai dealers for AutoRunner. I don't think an Innova is a good choice for these though; for one, it already has a firm enough suspension. Second, raising an MUV by 1/2 - 1 inch is not a good idea.

Quote:
Originally Posted by iTNerd View Post
I hope this is NOT an April fool prank!
You won't ever find an April Fool prank thread from me. People take Team-BHP seriously, and I greatly respect that.
GTO is offline   (1) Thanks Reply With Quote
Old 3rd April 2011, 13:27   #28
Senior - BHPian
 
Join Date: Jun 2006
Location: bangalore
Posts: 1,111
Thanked: 117 Times
Default Re: Coil Spring Adjusters : VFM Fix for the Honda Civic's (lousy) soft rear suspensio

wow, very interesting thread GTO :-) This might be also helpful for those who don't have a GC problem but would like to stiffen the rear suspension a tad. My Lancer has GC of 187mm (after upsized wheels, stock is 185mm), but HM has tuned for comfort. So while low speed ride comfort is great, it does have up and down movement at speeds on rough/undulating surfaces!

So, will keep an eye on your updates!
lancer_rit is online now   Reply With Quote
Old 3rd April 2011, 17:07   #29
BHPian
 
Join Date: Apr 2011
Location: Pune
Posts: 33
Thanked: 9 Times
Default Re: Coil Spring Adjusters : VFM Fix for the Honda Civic's (lousy) soft rear suspensio

Any idea on how this stuff works? Could not understand it's working clearly, explanations would help. Why does the stress level on spring and tyre wear increase?
pratikraveesh is offline   Reply With Quote
Old 3rd April 2011, 19:44   #30
BHPian
 
Join Date: Mar 2010
Location: Bangalore
Posts: 233
Thanked: 25 Times
Default Re: Coil Spring Adjusters : VFM Fix for the Honda Civic's (lousy) soft rear suspensio

Any idea who the dealers for the same in bangalore would be?
Although i would want to wait awhile before I actually consider this upgrade,Looks really VFM
raghav.carfreak is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Soft Suspension in the Honda City Piyush_Vroom Technical Stuff 18 11th June 2015 07:55
Diaphragm v/s Coil spring Clutch for the KMT90 satish.rpr 4x4 Technical 14 16th November 2012 09:40
Spring spacer & Spring rate question Sankar Technical Stuff 15 23rd January 2011 20:21
Are VFM cars really VFM? - Cabs are wrong examples? WindRide The Indian Car Scene 5 21st March 2010 20:35
Mahindra Classic Soft Top With Soft Doors Sankar 4x4 Vehicles 7 28th January 2010 18:29


All times are GMT +5.5. The time now is 00:27.

Copyright 2000 - 2017, Team-BHP.com
Proudly powered by E2E Networks