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| Coil over shocks set up https://www.ausmini.com/forums/viewtopic.php?f=2&t=91341 |
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| Author: | Jenk [ Tue Dec 22, 2015 6:47 am ] |
| Post subject: | Coil over shocks set up |
Hi, As mentioned in an earlier post I stripped my rear wet subframe for rebuild and was contemplating which way to go as far as suspension goes. I want to do away with the Hydro set up to try bring the cars suspension closer to that of a modern car, was initially thinking about rubber cones but now considering this set up... http://minisport.com.au/mini-spax-coil- ... up-lowered has anyone fitted this? what's it like? are modifications required to the body and or subframe or does it all just bolt on? what are the pros & cons please? Cheers |
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| Author: | drmini in aust [ Tue Dec 22, 2015 7:18 am ] |
| Post subject: | Re: Coil over shocks set up |
Pretty radical alterations from stock suspension, is it legal for road use in NSW or does the car need to be engineered? |
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| Author: | Jenk [ Tue Dec 22, 2015 7:54 am ] |
| Post subject: | Re: Coil over shocks set up |
Hi Doc, Thanks... I have no idea on legality or whether it requires an engineer... was hoping to find that out via the forum. By the way I sent you a PM after our discussion on my steering rack and head, you may not have noticed? cheers |
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| Author: | drmini in aust [ Tue Dec 22, 2015 8:23 am ] |
| Post subject: | Re: Coil over shocks set up |
Jenk, No PM in my inbox, read or unread. Send again please? |
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| Author: | mickmini [ Tue Dec 22, 2015 9:04 am ] |
| Post subject: | Re: Coil over shocks set up |
You are best looking at, reading and understanding the light vehicle modification rules on the RMS website. They do change from time to time, so our sticky in the modifications forum is often out of date. If you are not able to find them, read them and understand them in relation to the changes you wish to make, then i would suggest that you enlist professional help from the outset rather than rely on the forum for advice. Remember that if you make modifications that are not legal, you will not be insured. Most importantly, suspension modifications mean changes to safety critical items. Do it wrong and you could kill yourself or, worse, someone else. http://www.rms.nsw.gov.au/roads/safety-rules/vehicle-standards/index.html RMS wrote: Owner-certified modifications Modifications which add optional equipment to a vehicle can generally be owner-certified. Non-standard modifications of a minor nature which do not affect the level of safety, strength or reliability of vital systems like brakes and steering, may also be owner-certified. These modifications have little or no impact on the vehicle’s level of compliance with the Australian Design Rules. Coilovers were never a factory option, so because that modification is outside the permissible owner certifieable things which are basically fitting other factory optioned items (e.g. disc brakes, larger engine), they must be engineered. cheers michael |
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| Author: | mickmini [ Tue Dec 22, 2015 9:13 am ] |
| Post subject: | Re: Coil over shocks set up |
Jenk wrote: Hi, has anyone fitted this? what's it like? are modifications required to the body and or subframe or does it all just bolt on? what are the pros & cons please? Cheers I have not fitted this, but as an engineer, a couple of things stand out. Although it is claimed to be a bolt on mod, it uses the existing shock bracket holes on the inner guard panel to mount the coilover top bracket with no other reinforcement visible in the picture. I would be reinforcing that panel area because it is not designed to take the weight of half the front end. Shocks do not support the weight of the car, only the damping load. Similarly at the rear. Others all over the world have used these kits. I am not in a position to comment on the pros and cons of coilovers, however I do note that there are not many Mini race winners that if the class regulations allow run coilovers in an otherwise standard body. cheers michael |
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| Author: | Jenk [ Tue Dec 22, 2015 9:42 am ] |
| Post subject: | Re: Coil over shocks set up |
Thanks mickmini, I don't want to hassle around with engineers if that's the case, I have a Hydro car and want to do away with the wet set up, and currently have the rear sub frame out, Can you recommend something in suspension upgrades... do I just go with Hi-los (is engineer required?) and Donuts etc? what else? cheers |
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| Author: | gtogreen1969 [ Tue Dec 22, 2015 4:21 pm ] |
| Post subject: | Re: Coil over shocks set up |
Hi-Los and MST coil springs? viewtopic.php?f=8&t=89113&hilit=mst |
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| Author: | rodmac [ Tue Dec 22, 2015 4:55 pm ] |
| Post subject: | Re: Coil over shocks set up |
Plus a good set of adjustable dampers? |
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| Author: | 1071 S [ Tue Dec 22, 2015 5:10 pm ] |
| Post subject: | Re: Coil over shocks set up |
[quote="Jenk"]Hi, .... I want to do away with the Hydro set up to try bring the cars suspension closer to that of a modern car, was initially thinking about rubber cones but now ....... Modern suspension design (for the most part) is nothing special... cost savings with lots of computer modelling to make work.... Don't forget, hydro was done away with because of (production) costs ..not because of any performance issue... Rauno Aaltonnen always professed a preference for wet suspension on his rally cars.. Cheers, Ian |
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| Author: | Jenk [ Tue Dec 22, 2015 6:05 pm ] |
| Post subject: | Re: Coil over shocks set up |
gtogreen1969 wrote: Hi-Los and MST coil springs? viewtopic.php?f=8&t=89113&hilit=mst will these still need to be engineered? |
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| Author: | drmini in aust [ Tue Dec 22, 2015 7:39 pm ] |
| Post subject: | Re: Coil over shocks set up |
Jenk wrote: gtogreen1969 wrote: Hi-Los and MST coil springs? viewtopic.php?f=8&t=89113&hilit=mst will these still need to be engineered? I would guess not, as they fit in where the cones are. Do some reading though, 1/2 the world is for using springs and the other 1/2 against.  The spring rate of springs is nowhere near that of rubber cones, which is why issigonis used rubber to save space. |
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| Author: | mickmini [ Wed Dec 23, 2015 11:14 am ] |
| Post subject: | Re: Coil over shocks set up |
The coil springs are also not progressive rates like the cone, not enough room for that. They can easily suffer from bind as there is not enough room to get the right length coil in there. Some of them have been known to fall out at the rear on full droop if the shock is not limiting the droop enough. And again, the way i read the rules, coil springs are not a factory option, so ..... |
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| Author: | Alexw [ Wed Dec 23, 2015 2:42 pm ] |
| Post subject: | Re: Coil over shocks set up |
Just a small hijack on the coilover discussion.. Seems to me that the shock mounting pin at the front (upper control arm) is not beefy enough to act as a bottom mount for a coilover. Does anyone have experience to share? |
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| Author: | timmy201 [ Wed Dec 23, 2015 4:34 pm ] |
| Post subject: | Re: Coil over shocks set up |
Force racing does some swanky top arms specifically for coilovers. Both alloy and titanium tube.. http://www.force-racing.co.uk/front-suspension/ |
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