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Green Laning Jimny from The Netherlands

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30 Jun 2020 13:14 - 30 Jun 2020 13:15 #224285 by JimnyNL
Yes that’s the one I mean, the bumper on the front Jimny.
Last edit: 30 Jun 2020 13:15 by JimnyNL.
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30 Jun 2020 21:26 #224315 by X8GGY
Absolutely love that sunroof! An inspired Modification! B)

Is that buggy finished yet?...

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02 Jul 2020 17:53 #224401 by kirkynut
Welcome along!

That's awesome!

Kirkynut

The underdog often starts the fight, and occasionally the upper dog deserves to win - Edgar Watson Howe.

My Jimny Thread Here: www.bigjimny.com/index.php/forum/8-my-ji...on-continues?start=0

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04 Jul 2020 13:32 - 04 Jul 2020 13:55 #224476 by JimnyNL
Thanks!



Finished the welding on the bumper today in my friends workshop.

Hoping to coat it tomorrow.

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Last edit: 04 Jul 2020 13:55 by JimnyNL.

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  • J999 MNY Bashing around Carlisle
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04 Jul 2020 16:27 #224493 by Riccy
Good looking bumper B)

You say this is your first welding project? Looks very good to me :-)

What does it weigh? I made one for my car and I ended up chopping most of the back of the box section out to reduce weight and drilled large holes in the underneath sections for drainage and further weight reduction. It still is ridiculously heavy, but I like it :-)

J999 MNY, ULYSSES M18 VVT with ITB's Dyno tested at 130hp

Pickup/tipper, R7me gearbox & 4.3 Rocklobster, 31" Toyo MT, 2x ARB 3.9 diffs in braced axles, 6" total lift, Floating rear conversion, Raptor painted, CB, Recaro's, Caged, etc, etc...

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05 Jul 2020 09:43 #224522 by JimnyNL
Thanks!

I’ve put the bumper on a scale today, it’s 28kg’s without any fixtures.
So the end total weight will be around 30-31kg’s

I was hoping for less than 50kg, so to me it’s fine.

I do want to cut the weight elsewhere if I can.

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05 Jul 2020 10:21 #224526 by Lambert
be careful about how you address the relative reduction of total weight. It's ok removing the added weight of the bumper but the bumper is still a considerable amount of weight out in front of the front axle. If you take more weight away further back it will only increase the effect of the weight at the front. It's not too much of a problem but it will make the car understeer more and tend to be harder to turn into a corner..i would really see if you could add a little more weight to the back to try and get the balance back and make it more neutral. A Jimny is light enough at the back to start with.

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05 Jul 2020 10:25 - 05 Jul 2020 10:26 #224527 by JimnyNL
Thank you, that is some solid advise.


I was thinking about making a rear bumper as well, maybe I should make a more beefier design which is also about 28kg’s to get the balance just right.

Also I forgot to mention the front mounting plate, I did not weigh it before welding it on the frame, but it’s about 3-5kg’s.
Last edit: 05 Jul 2020 10:26 by JimnyNL.
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05 Jul 2020 10:40 #224528 by Lambert
That will help. And then take measures to reduce the total weight from between the axles. This is of course not as simple as it sounds especially as you're eventually going to be looking for 60 ish kilograms but it depends on what you are doing with your Jimny. If you don't need the rear seats there is a decent weight saving and if you want to get serious then glass fiber front seats, no carpets or interior plastic trim etc etc. It's something that I obsess over is the correlation of necessary weight in the form of guards and under body armour vs unnecessary weight. Weight is one of the reasons I don't have big knobbly tyres and weight distribution is one of the reasons I don't want a suspension lift.

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05 Jul 2020 11:10 #224530 by Reason2doubt

Lambert wrote: be careful about how you address the relative reduction of total weight. It's ok removing the added weight of the bumper but the bumper is still a considerable amount of weight out in front of the front axle. If you take more weight away further back it will only increase the effect of the weight at the front. It's not too much of a problem but it will make the car understeer more and tend to be harder to turn into a corner..i would really see if you could add a little more weight to the back to try and get the balance back and make it more neutral. A Jimny is light enough at the back to start with.


That is good advise... I have added loads of weight up front and the back has been stripped in comparison. Best excuse to wack on a back metal bumper if you ask me! Even it out a bit.
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