 | Home > Maintenance & Modifications > Engineering project to reduce weight in a Puma 110 |
 
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| zsd-puma Member Since: 09 Aug 2016 Location: Kent Posts: 2720   
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On puma's and late TD5's the door skins are steel, you could replace them with the earlier ally ones. Or you could just remove them all along with the roof and windscreen. So it somewhat resembles an US army recon version - how far do you want to go?
You could strip out all the sound insulation, carpets, head lining etc. Seats could probably be replaced with Series 3 ones. Dash could probably be replaced with some simple brackets. But as you've alluded to the vast majority of the weight is going to be in the chassis and drive train, most of which is difficult if not impossible to lighten. |
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18th Aug 2018 6:42pm |
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| bankz5152 Member Since: 02 Feb 2017 Location: South London/North Kent Posts: 2187 
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As above. Instagram @defender_ventures
Empire Tuning - Agent |
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18th Aug 2018 8:03pm |
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| diesel_jim Member Since: 13 Oct 2008 Location: hiding Posts: 6105 
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What are you trying to achieve?
As someone once told me (when I was pen-ing the plans for my current Td5 110, I was going to build it with a Totota straight 6 diesel or a Merc OM606), he said... "If you're trying to end up there... why are you starting here?" Meaning, instead of trying to shoeshorn in a toyota engine, just buy a toyota. If you're trying to make a 110 "light".... just don't have a 110... I can't imagine LR purposefully made the 110 heavier than it needed to be. |
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18th Aug 2018 9:08pm |
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| sako243 Member Since: 08 Jul 2014 Location: Wales Posts: 1229  
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Well the big ticket items are (approx):
- Axles: 120kg each (dressed without wheels) - Engine: 300kg (V8s lighter, Tdis around there, Td5 likely a bit higher) - Chassis: 180kg - Gearbox: 55kg - Transfer box: 50kg - Bell housing: 10kg So given a 110 CSW is a tad under 2 tonne (well none TDCI versions) you've got at least half of that listed there. Ed 82 Hotspur Sandringham 6x6 95 Defender 110 300Tdi |
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19th Aug 2018 7:37pm |
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| Mike c Member Since: 11 Aug 2017 Location: Maldon, Essex Posts: 930  
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If you compare a 110 to a discovery 3/4, they are lightweight! Lol
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20th Aug 2018 9:13am |
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| OsloBlue Member Since: 14 Jul 2018 Location: Essex Posts: 823 
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I know this from jumping over bridges and speed-bumps at High speeds. Disco goes further but defender goes higher. I'm on IG: https://www.instagram.com/osloblue42/ Current: TD5 '110 "Lucinda" Thread here: https://www.defender2.net/forum/topic62562.html  |
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20th Aug 2018 9:55am |
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| Mike c Member Since: 11 Aug 2017 Location: Maldon, Essex Posts: 930
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20th Aug 2018 10:07am |
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| sako243 Member Since: 08 Jul 2014 Location: Wales Posts: 1229
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I think given the size of the vehicle it's pretty lightweight anyway. Quite a few estates and larger saloons are coming in around the 1.5 - 2.0 tonne mark nowadays... Ed
82 Hotspur Sandringham 6x6 95 Defender 110 300Tdi |
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20th Aug 2018 4:24pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17478 
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What are you trying to achieve?
Strip off all the body above the waistline, ditch the windscreen, wipers, heater and doors. Strip out the entire interior except the driving seat. Loose the powered front axle and replace with a plain tube. Ditch the transfer box and fit a propshaft straight to the gearbox. If you're lucky that'll be about 25% lighter than standard. If you want more, lose the bumper, cut out some crossmembers then drill holes in the rest of the chassis and radius arms, then fit the narrowest and smallest tyres you can find. That might get you another 5%. It won't be much use after this, but it would be an interesting engineering exercise. |
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20th Aug 2018 5:46pm |
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| bankz5152 Member Since: 02 Feb 2017 Location: South London/North Kent Posts: 2187
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Do not like that logic. If everyone thought thag way we would never get anywhere!! Instagram @defender_ventures Empire Tuning - Agent |
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20th Aug 2018 5:58pm |
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| apt100 Member Since: 05 Mar 2015 Location: Derbyshire Posts: 1547 
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This table shows the differences between the different models.
So it looks like taking all the rear bodywork off (110 chassis cab) saves about 270kg compared to eg the 110 Utility. But that might be pessimistic if the chassis cab has a heavier chassis than the other models? Click image to enlarge |
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20th Aug 2018 6:10pm |
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| Matt3932 Member Since: 19 Jun 2018 Location: Cheltenham Posts: 35
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Thanks very much for all the responses, both helpful and humerous. I've tried to drop a piccie of the veh as is, but being mildly computer illiterate have singularly failed.
It's currently a soft top with some mods to allow carriage of two kayaks with the roof on or off. The engine has been lightly breathed-on with new pipework, a tweaked ecu and a new BAS inter cooler. What am I trying to achieve? I've always liked Mr Chapman's mantra of "adding lightness", and I needed the 110 to meet a number of criteria, soft top, carry the boats, the dog and the family, and enable us to access entertaining places. That simple and that complicated. The weight loss is designed to facilitate better performance and better economy (inaugural trip was to Lake Garda where we spent a small fortune on crappy Italian diesel....without compromising the on or off road capabilities of the veh. It's also quite fun to investigate ways to take weight out of what is essentially already for purpose. It's a project,not a crusade. |
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20th Aug 2018 6:15pm |
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| Timo K Member Since: 23 Aug 2012 Location: Helsinki Posts: 171 
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I have myself sometimes toyed with the idea of a lightweight 110. It would be interesting to see the weight difference with a carbon fiber body for example. My logic behind it all was mainly better offroad ability due to lower weight and therefore lower ground pressure.
However, I do think the logic of doing it for lower fuel consumption is flawed... I doubt you would see much if any benefits from a couple of hundred kg's saved, not in terms of performance figures or fuel consumption. Looking at how much diesel your average SUV is drinking taking into consideration that they are often half a tonne lighter with vastly more efficient drivetrains yet only return a couple of L per 100km better efficiency leads me to believe a few hundred kilos off a Defender would be insignificant. Most of the poor economy is due to the absolutely horrific aerodynamics and antiquated drivetrain with high drag. |
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20th Aug 2018 7:13pm |
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| bankz5152 Member Since: 02 Feb 2017 Location: South London/North Kent Posts: 2187
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The Russians have a few CF bodied Ultra4 trucks. Not links atm but theh look evil
Short of fitting lightweight parts etc.. there isnt much you can drop Instagram @defender_ventures Empire Tuning - Agent |
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20th Aug 2018 7:39pm |
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