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Please play nicely.  No one wants to listen/read a keyboard warriors rants....

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Messages - mandula

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16
Omega General Help / Re: Isofix anchors to facelift estate
« on: 28 April 2019, 20:46:09 »
This is so intersesting case that I ordered one more isofix anchor for testing to hang test load from unmodified and from modified (bent) anchor loop to see is there any difference.

I have tractor I can use to lift and hang 1000 kg's load from each loop one at a time, this is same load that 33 kg child+seat (max load isofix should withstand) causes with g force of 60 (total of 2000 kg on two loops -> 2000 kg / 33 kg = 60,6).

So if one modified loop can withstand 1000 kg of load, two modified loops can withstand 2000 kg and that is far more g force than human body can withstand in crash.

Sorry that I used again actual numbers on internet forum  ::) But just to get clear is there any difference between theory and practice.

17
Omega General Help / Re: Isofix anchors to facelift estate
« on: 28 April 2019, 18:23:21 »
This is all very theoretic discussion going on here, but I don't believe Ford xrays those loops after bending them in shape before welding and they bend them 90 degs several times. But of course everyone handles this as they please, I see no safety issues here.
Your own maths suggest that they won't survive a solid impact at speed...

It would be interesting to see what your insurers position is as well. They're your kids though...

They would not survive even without modifications based on my math. Of course my maths do not know all the conditions and are very rough. Maybe lower speed would give some better perspective for outcome.

As said, they do the job and if they dont then I have made some serious overspeeding that my insurance would not like.

By the way, Im now more comfortable to put my kids to seats as they are now really attached to car. Once you isofix them, there is no going back.

18
Omega General Help / Re: Isofix anchors to facelift estate
« on: 28 April 2019, 16:20:22 »
This is all very theoretic discussion going on here, but I don't believe Ford xrays those loops after bending them in shape before welding and they bend them 90 degs several times. But of course everyone handles this as they please, I see no safety issues here.

19
Omega General Help / Re: Isofix anchors to facelift estate
« on: 28 April 2019, 13:52:06 »
No pun taken, I get the questioning but when handling the actual product it could be noticed that there wont be any issues recarding to safety. Wich you cannot notice from pictures taken.

20
Omega General Help / Re: Isofix anchors to facelift estate
« on: 28 April 2019, 11:34:36 »
Just calculated that loops would hold about 1600 kg's if weakened by half from original tensile strength.

Hitting 200 km/h to wall would produce about 266 g-force causing 33 kg of child+seat weight about 900 kg's.

So probably some other things broke before those bended loops.


you can't use actual numbers on an internet forum :o

Sorry  ::)

But anyway, bending those loops slightly wont affect safety or strength unless you are going to drive rally on a mountain with your childrens in car.

21
Omega General Help / Re: Isofix anchors to facelift estate
« on: 28 April 2019, 09:30:45 »
Just calculated that loops would hold about 1600 kg's if weakened by half from original tensile strength.

Hitting 200 km/h to wall would produce about 266 g-force causing 33 kg of child+seat weight about 8800 kg's.

So probably some other things broke before those bended loops in "normal" crashes. Even unbended loops would not hold against that 200 kmh crash. But usually there are also car belds helping when child is past 3 years old.

Some thinkingmistakes edited.

22
Omega General Help / Re: Isofix anchors to facelift estate
« on: 28 April 2019, 09:04:53 »
Just calculated that loops would hold about 1600 kg's if weakened by half from original tensile strength.

Hitting 200 km/h to wall would produce about 266 g-force causing 33 kg of child+seat weight about 900 kg's.

So probably some other things broke before those bended loops.

23
Omega General Help / Re: Isofix anchors to facelift estate
« on: 28 April 2019, 07:27:24 »
Bending the loops was necessary as the fixing surface on car was tilted so loops would be pointing too much upwards when bolded in.

Bending angle is so small that I dont see risk of weakening the loops.

24
Omega General Help / Re: Isofix anchors to facelift estate
« on: 27 April 2019, 21:51:05 »
Yep, that was the reason for this mod. Way better selection of seats and more secure.

25
Omega General Help / Isofix anchors to facelift estate
« on: 27 April 2019, 20:54:11 »
Just installed Isofix anchors to my estate. Found good ones from ebay just about 50 euros for two + post. Job took about 2 hours with all the thinking process and actual job.

Here is a link to finnish Opel forum, you can find pics detailed the process. Also explained it, but in finnish, maybe I can translate it later here with pics.

Easy job and works better than from factory, I believe  :y

https://www.opelclubfinland.fi/viewtopic.php?f=10&t=254105#p2415054

26
Omega General Help / Re: LPG in our omega
« on: 04 February 2019, 05:53:28 »
Having an estate makes it easier as you can put the tank in the spare wheel well  ;)

How large (or small) tank would fit in bolt-on -style?

There's plenty to choose from: https://www.lpgshop.co.uk/lpg-tank-toroidal-internal-30-degree/

27
Omega General Help / Re: Passenger Door Lock Not Opening
« on: 17 January 2019, 11:38:02 »
I got mine moving, pulling the locking knob and same time alternating from fob doors to lock-unlock until it slowly started to move.

28
Omega General Help / Re: Poly bushes
« on: 10 December 2018, 06:45:18 »
I recommend this shop for wishbones, rear arms and anti roll bars: https://www.strongflex.eu/en/1105-omega

Prices, delivery speed and product quality are all excellent.

29
Omega General Help / Re: Rear crossmember bush
« on: 03 December 2018, 07:19:34 »
As DG says, Carlton ones work loose really quickly, which is why many of us run polys.

Why don't you want polys (cost aside). Its a myth that they harshen the ride, they just take it back to the ride of a new rubber bush...  ...which will feel firmer if you're used to shagged bushes.


Probably the price difference.
Polys £150.... Rubber £30.

I replaced rubber ones twice (both new one sets lasted two years) before I ordered polys. So if you gonan keep car several years, it's not so big difference to change to polys at this point.

30
Omega General Help / Re: Oil leak from top of engine on 2.2 doc Omega
« on: 11 September 2018, 05:58:24 »
Did you let sealant to dry properly before startup? I believe if sealant still "wet" it let oil go through and leave passage when it finally dry.

I did mine with black sealant all over gasket because cover was slightly deformed (over tightened too many times) causing gasket to leak.
I let it dry over three hours (engine still slightly warm), as I did some other service same time. Thousands of kilometers past and no leaks anywhere.

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