Weight of a Marcos - any model

Re: Weight of a Marcos - any model

feeds@yuku.com (OldNoccer) — Thu, 24 Sep 2009 20:43:00 GMT

Off topic - but mine was fitted with rose jointed arms to get the IRS alignment right, on the basis that it was wrong as standard. However, I don't know how wrong, or whether this was to allow for personal preferences - but I do know it wasn't cheap.

Steve

Re: Weight of a Marcos - any model

feeds@yuku.com (MarcosMantula) — Thu, 24 Sep 2009 06:28:32 GMT

Mine is an IRS car but not rose jointed at the back so Topcats weren't able to do much with that end.

Re: Weight of a Marcos - any model

feeds@yuku.com (OldNoccer) — Wed, 23 Sep 2009 23:36:58 GMT

I suspect mine will be in the same ball-park. Is yours live axle or IRS ?

Steve

Re: Weight of a Marcos - any model

feeds@yuku.com (MarcosMantula) — Wed, 23 Sep 2009 21:00:17 GMT

Just back from Topcats after getting the suspension setup. From the corner weight scales the total weight of the car came out at 977kg so a little bit less than the measurement obtained on a weighbridge (1010kg). Most of the difference will be fuel will be fuel as it took 44.5 litres (approx 32kg) to fill it shortly after leaving Topcats.

Re: Weight of a Marcos - any model

feeds@yuku.com (Caranca1) — Sun, 20 Sep 2009 08:18:44 GMT

Look for the nearest sand and gravel quarry/supplier - eg.Hanson, LeFarge, Foster Yeoman, etc.

These have to have weighbridges to be able to charge for the loads.

Re: Weight of a Marcos - any model

feeds@yuku.com (OldNoccer) — Fri, 18 Sep 2009 19:35:11 GMT

I am not sure what a transfer centre is, but neither our local tip, nor the main one in Chester have scales. In fact I have never seen one with scales, people just drive in and dump their stuff and drive out.

I am sure you are right though, that if I locate a set people will be sympathetic.

However I have heard there is a farm that does the organic recycling for the council, they probably weigh stuff in and out - but a Marcos in a farm with heavy vehicles. It isn't...

Re: Weight of a Marcos - any model

feeds@yuku.com (Captain Speaking) — Fri, 18 Sep 2009 14:59:14 GMT

However I have not yet found a local weighbridge.. but I will find one eventually, and will let you all know.

Steve,

Have you thought about the scales at the local recycling/transfer centre? Given that they charge for the weight difference of vehicles between entering and exiting the facility, one would imagine that they have to be fairly accurate or the punters who pay for the privelige of dumping their rubbish at it would be kicking up a fuss.
...

Re: Weight of a Marcos - any model

feeds@yuku.com (MarcosMantula) — Thu, 17 Sep 2009 10:02:22 GMT

Yep the weight I quoted was after galvanising. I do remember Rory saying that 2 people were able to load the chassis unto the trailer to bring it to the galvanisers but 4 to load it to bring it back. There are certainly some areas where there is a significant amount of zinc still in the tubes, but, like Steve, I prefer the piece of mind of not having to worry about rust for quite a few years.

neal

Re: Weight of a Marcos - any model

feeds@yuku.com (dparslow) — Thu, 17 Sep 2009 08:39:39 GMT

MarcosMantula wrote:
I had my Mantula weighed and with a bit less than 1/2 tank of fuel came in at 1010kg and with me in it 1120kg. I have now lost quite a bit of weight

I`m sure Neal said his car has a galvanized chassis, even taking 25kgs off for the weight of the fuel it`s quite a...

Re: Weight of a Marcos - any model

feeds@yuku.com (OldNoccer) — Wed, 16 Sep 2009 19:31:22 GMT

You are right - mine has put on weight in the galvanising bath. But let us hope that what ran in, ran out again - I don't like the idea of any of the tubes being full of zinc - and I don't suppose the galvanising company does either.

However, even if it has put on weight that way I do not mind. To be able to use it in any weather, and to visit my relatives at Xmas (700 mile round trip), that is fine.

However I have not yet found a local weighbridge.. but I will...

Re: Weight of a Marcos - any model

feeds@yuku.com (Martyn123) — Wed, 16 Sep 2009 08:50:38 GMT

Steve,

Sorry to put a damper on the weight issue but isn't your chassis galvanised or am i thinking of somebody else ?. I was originally considering galvanising mine but on speaking to MHS the weight issue came up in that when the chassis is dipped it adds quite a lot of weight to it especially if it can't drain fully from the rails as it cools, hence I went for the Powder Coat option,

Take it to a weighbridge and let us know, I certainly will when mine is up and...

Re: Weight of a Marcos - any model

feeds@yuku.com (OldNoccer) — Tue, 15 Sep 2009 21:54:45 GMT

Today I got hold of Motor magazine's 1986 road test of the new V8 Mantula ( the post around here is very slow!), and more weight figures appear...

Dry Weight (no fuel) 897.5kg, and weight as tested 1085 kg (not sure if this includes the tester or a spare wheel, as 190kg of fuel, is about 40 gallons !). That was XYD768 - a 3.5Efi car

Steve

Re: Weight of a Marcos - any model

feeds@yuku.com (dparslow) — Fri, 03 Jul 2009 13:17:52 GMT

After doing the sums I can get another 25 - 30kgs out of the car, but at a cost. The wheels are the easiest weight saving by going to magnesium or billet 3 piece items 12kgs - 13kgs to be saved there. The radiator and fans are very heavy at present, a custom built alloy unit would save me between 5 - 6kgs easily. The rest I can get by changing the rear brake calipers to alloy items and thinner panelling on parts of the bodyshell.

I would be struggling to get anymore torque out of...

Re: Weight of a Marcos - any model

feeds@yuku.com (OldNoccer) — Wed, 01 Jul 2009 20:00:07 GMT

Corner weights can be deceptive, the ride height can be right, but the car can be effectively suspended on two diagonal wheels. That is why I have been looking for a local shop with corner weight scales. I even went to Demon Tweeks (who sell corner weight scales) and saw they had a DSP600 alignment jig - but did they have corner weight scales - nope - so how are they better than the local tyre shop - well not at all - what a let down.

So that 766kg is without any fuel and without...

Re: Weight of a Marcos - any model

feeds@yuku.com (dparslow) — Wed, 01 Jul 2009 11:08:29 GMT

After fitting the new wider track wishbones, rear axle and completing the body mods I roughly set the ride heights and then put it on the scales. The results were quite alarming as you imagine the corner weights shouldn`t be too far out if all the ride height measurements are set equal on each axle respectively.

Initial corner weights in kgs, there was some fuel in it and the bonnet was not fitted, as it made it easier to make adjustments without it;

Re: Weight of a Marcos - any model

feeds@yuku.com (Mike009 Gardner) — Tue, 30 Jun 2009 12:07:16 GMT

The data I`ve got on the Mantara is a weight of 1020 Kg , so many variances , must try it on the kitchen scales . In a mild state of tune my 3.9 is reckoned to be nominally 205 bhp giving 188 bhp / tonne.

Obviously the weight of a tank of petrol comes into it as `no petrol , no bhp

Re: Weight of a Marcos - any model

feeds@yuku.com (OldNoccer) — Mon, 29 Jun 2009 22:51:59 GMT

Thanks for the info - the other potential weight difference relates to the IRS subframe, which is a separate steel frame metelastic bushed to the main chassis (otherwise the diff noise would drive you nuts). But on the other hand the chassis work for the rear axle links isn't there. In fact we made a bit of a discovery at Tatton park - the IRS boot is a lot wider than the live axle boot, as it extends full width, which allows the battery to go in the boot in the drivers side rear wing,...

Re: Weight of a Marcos - any model

feeds@yuku.com (dparslow) — Mon, 29 Jun 2009 14:12:23 GMT

On live axle cars, the bare axle including diff, halfshafts and 5 links weighs approx 50kgs, that does not include the brakes and shockers as they will be near enough the same on both axle types. A Sierra diff weighs 25kgs, so if IRS hubs, driveshafts and wishbones don`t weigh any more than about 25kgs I can`t see a great deal of difference between the cars.

Re: Weight of a Marcos - any model

feeds@yuku.com (OldNoccer) — Thu, 25 Jun 2009 21:43:18 GMT

Thats another live axle car I assume - but it is narrowing things down.

Re: Weight of a Marcos - any model

feeds@yuku.com (brian coleman) — Wed, 24 Jun 2009 18:52:49 GMT

My (empty) Mantula weighed in at 880Kg at our local weighbridge

Weight of a Marcos - any model

feeds@yuku.com (OldNoccer) — Sun, 21 Jun 2009 23:59:22 GMT

When thinking about power to weight ratios, I have always based my estimate of the weight of my Mantula as about 1 tonne. A road test in Autocar quoted the rigid axle 3.5 Mantula as 2077lb (942kg), but today I was looking at the road test on the new Lotus Evora and see it weighs1382kg - now I don't understand how my steel chassis V8 Marcos can be 440kg lighter than the aluminium chassis V8 Evora ! 440kg is huge - that is four 17 stone people.

So maybe the weight is wrong for the...