14/15" alloys

[BONE]

could anyone give me a list of places where i can get my hands on some compomotive mo motorsport wheels for my metro. and will the alloys sit straight on or will i need to have sum arch work done. thanks

[John]

you need to roll the arches for 15's and shave the back axel.

I got mine second hand so not sure where you can get them from new.

[Steve.pearse]

You can get them directly from Compomotive at http://www.comp.co.uk/ On direct orders they will discount 10% (Did for me but still not cheap) I'm running their MO1460 wheel (14" 6J) with 195/45/14 Falken tyres, keeps the gearing the same. These just clear the arches at the back at standard ride height, at the front they will just scuff the arch liners when cornering fast on bumps. Anything wider and you'll need to do work particularly at the back

Compomotive will machine the wheels to your requirements, for the MK3 Metro and R100: PCD 95.25, bore 56.7, ET 30.

Good looking wheels so complement them with locking nuts. I've used the "McGard" ones.



Note Suspension is too high in pic.

[John]

these are my front's with the ap 4 pots. If your going comps why settle for 14's? when you can have 4 pots?

[Steve.pearse]

Should have said ET (offset) 38mm. Sorry for error. John, what tyre are you running there?

[Bills_metro]

Originally Posted by John

you need to roll the arches for 15's and shave the back axel.

I got mine second hand so not sure where you can get them from new.

Am I right in thinking that you mean you advocate grinding the rear trailing arm, and reduce it's structural integrity, to fit some wheels that look "nice"?

[Procta]

i love the comps on metros but i think its more of a **** on putting 15"s on a metro, id have just put 14"s on less hassle.

[John]

Originally Posted by Bills_metro

Am I right in thinking that you mean you advocate grinding the rear trailing arm, and reduce it's structural integrity, to fit some wheels that look "nice"?

shocking as it sounds but yes, however i didnt do it because they look nice, i would have prefured steelies, but the ap brakes will only fit under those 15's. My car is for racing nothing else my Ztt takes care of my day to day needs the car doesnt look nice it looks like a shed. Looks were not taken into consideration on building my r100

The trailing arm is only grinded by about 5mm and the point in which you grind is excess 'fat' so to speak. If there was another way around this the option would have been taken

Sorry you need to run on 195/45/15's you cant run anything more than a 45 profile tyre. Oh and they are Toyo T1R's i ran them on my Mgf and they were very good.

[Bills_metro]

Originally Posted by John

shocking as it sounds but yes, however i didnt do it because they look nice, i would have prefured steelies, but the ap brakes will only fit under those 15's. My car is for racing nothing else my Ztt takes care of my day to day needs the car doesnt look nice it looks like a shed. Looks were not taken into consideration on building my r100

The trailing arm is only grinded by about 5mm and the point in which you grind is excess 'fat' so to speak. If there was another way around this the option would have been taken

<snip>

Ah yes of course, I didn't realise you had the design drawings, and knowledge to interpret them, to be able to decide that the 5mm was "excess fat". They must be awfully thick to be able to lose 5mm. I guess all those years ago the designers grossly over-engineered them, at the expense of extra cost and extra weight for every vehicle that left the factory and for every spare that was made.

So do tell, just how thick is the material in a trailing arm: you will of course have cut one open to check. And where do you get the X-ray specs from that allow you to see inside the ones on your car, so you know the condition inside there, know that they are not rusty after God knows how many years on the road?

And what kind of results did you get from your own tests, after modification, of torsional strength, just how little (or much) did the trailing arm flex, compared to original design figures?

As for there not being any other way round, maybe another option would have been to fit things that did NOT compromise the safety margins that were (NOT over-)engineered in there? And isn't the race track a situation where components are pushed towards their design limits anyway, where the stresses are increased compared to normal road use and so erode away the margins?

I am so glad to hear that it isn't used on the roads, if only all the vehicles that have been attacked with brute force "because there was no other way" weren't on the roads. Maybe then there would be fewer "accidents" due to failures - which may not even be catastrophic failures of a broken component that can be seen when it's upside down in the ditch?

Or maybe we all ought to realise that "accidents" have, in the main, causes that could be avoided?

[John]

Originally Posted by Bills_metro

Ah yes of course, I didn't realise you had the design drawings, and knowledge to interpret them, to be able to decide that the 5mm was "excess fat". They must be awfully thick to be able to lose 5mm. I guess all those years ago the designers grossly over-engineered them, at the expense of extra cost and extra weight for every vehicle that left the factory and for every spare that was made.

So do tell, just how thick is the material in a trailing arm: you will of course have cut one open to check. And where do you get the X-ray specs from that allow you to see inside the ones on your car, so you know the condition inside there, know that they are not rusty after God knows how many years on the road?

And what kind of results did you get from your own tests, after modification, of torsional strength, just how little (or much) did the trailing arm flex, compared to original design figures?

As for there not being any other way round, maybe another option would have been to fit things that did NOT compromise the safety margins that were (NOT over-)engineered in there? And isn't the race track a situation where components are pushed towards their design limits anyway, where the stresses are increased compared to normal road use and so erode away the margins?

I am so glad to hear that it isn't used on the roads, if only all the vehicles that have been attacked with brute force "because there was no other way" weren't on the roads. Maybe then there would be fewer "accidents" due to failures - which may not even be catastrophic failures of a broken component that can be seen when it's upside down in the ditch?

Or maybe we all ought to realise that "accidents" have, in the main, causes that could be avoided?

Your right of course as a buyer for a engineering firm i dont know how to read a drawing. And of course your completly right the back axle and trailing arm wasnt sandblasted, chemically impregnated, and then powder coated. The precise point in which was shaved is excess fat but of course a man who doesnt bring in a lot of his castings in from china/india. Of course i wouldnt also know how the engineering process works with castings i wouldnt also know about the safty tolerances on all casting parts in my sector or the automotive sector. Its only the sector i havnt been studying to move from engineering to automotive sector.

but your right we also didnt have a fia approved roll cage designed for the car that wasnt sent away again to be strengthed in key places. (however i will give you that this roll cage isnt quite fitted yet. But the car has only been on a quick shake down at croft, i am quite confident the 15 minutes or 3 laps it didnt wont have affected the overall ridgedity of the shell

Like previously mentioned the shell isnt a road car, although legally it can be used on the road. It doesnt see light of day its horrible to drive the car is so stiff it rattles your very core.

Please dont take me for some small child with his first car i have been building race cars for quite some time now. Although this is my first personal race car, i still know a few tricks.


However i do agree with you on one point. Accidents genrally can be avoided with a bit more thought. Most of the time its the driver running out of talent rather than the cars ability