 Fibreglass Bumper vs standard weight |
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| Mr Pharmacist |
 Mar 14 2017, 12:58 PM
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#1
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Member  Group: Members Posts: 69 Joined: 15-September 09 From: United Kingdom Member No.: 10,807 Region Association: England  |
Hi
Does anyone know the approximate weight saving on swapping to fibreglass bumpers front and rear vs standard (early) bumpers? Trying to reduce weight ready for the forthcoming hillclimb season - any other suggestions to reduce weight that won't cost ££££ or $$$$ TIA |
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| brant |
Mar 14 2017, 02:37 PM
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#2
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914 Wizard Group: Members Posts: 11,622 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains 
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I have 3 fiberglass bumpers and they all have significantly different weights.
the manufacturer, number of layers, and mounting style all change about 3 lbs per a bumper. Roughly... stock isn't too far off of 22lbs and FG is approximately 11-14lbs We cut a lot of weight and looked for every cheap method in the book our formula back in 2005 was $50/lb meaning if the weight savings was more than $50/lb it was not cost effective if the weight - cost ratio was under 50/lb it was worth looking at bumpers were on the positive column approximately 11lbs, for approximately 200-ish dollars We cut about 500lbs total when we built the race car over the stock weight, and the only fiberglass parts on it so far are the bumpers. currently 1826lbs with a 6cylinder and all metal construction brant |
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| Mr Pharmacist |
Mar 14 2017, 03:15 PM
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#3
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Member Group: Members Posts: 69 Joined: 15-September 09 From: United Kingdom Member No.: 10,807 Region Association: England |
Thanks Brant, very useful information.
I've done the obvious like interior etc but just seen some fg bumpers for sale here in the uk for much less than usual so thought it'd be worth getting them but just wanted to check |
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| rhodyguy |
Mar 14 2017, 03:20 PM
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#4
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Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,075 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
fg 'bullets'?
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| Mr Pharmacist |
Mar 14 2017, 03:42 PM
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#5
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Member Group: Members Posts: 69 Joined: 15-September 09 From: United Kingdom Member No.: 10,807 Region Association: England |
QUOTE(rhodyguy @ Mar 14 2017, 09:20 PM)  fg 'bullets'? Fat fingers + auto correct : (IMG:style_emoticons/default/unsure.gif) |
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| Downunderman |
Mar 15 2017, 12:01 AM
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#6
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Senior Member Group: Members Posts: 852 Joined: 31-May 03 From: Sydney, Australia Member No.: 766 Region Association: Australia and New Zealand |
Roger Bray was doing fibreglass bumpers a while back.
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| Mr Pharmacist |
Mar 15 2017, 01:27 AM
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#7
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Member Group: Members Posts: 69 Joined: 15-September 09 From: United Kingdom Member No.: 10,807 Region Association: England |
It's Roger Bray I'm getting them from. They have a set left
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| Mr Pharmacist |
Mar 15 2017, 01:28 AM
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#8
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Member Group: Members Posts: 69 Joined: 15-September 09 From: United Kingdom Member No.: 10,807 Region Association: England |
Oops
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| wndsrfr |
Mar 19 2017, 08:11 AM
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#9
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Senior Member Group: Members Posts: 1,428 Joined: 30-April 09 From: Rescue, Virginia Member No.: 10,318 Region Association: MidAtlantic Region
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QUOTE(brant @ Mar 14 2017, 12:37 PM) I have 3 fiberglass bumpers and they all have significantly different weights. the manufacturer, number of layers, and mounting style all change about 3 lbs per a bumper. brant Brant......just broke my FG front bumper & lost the end off of it so need to replace it. Can you elaborate on the three FG ones you have & who's supplying them? |
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| brant |
Mar 19 2017, 09:37 AM
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#10
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914 Wizard Group: Members Posts: 11,622 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains
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Unfortunately I don't know the brands/manufacturer
The heaviest I have uses attachment points that is a piece of wood molded into the bumper. It is encased inside the Fg The lightest has an aluminum U bracket bolted through the ext face That bolt headshots from the outside but is painted. This bumper weighs 2lbs less The manufacturer's usually advertise the weights and even offer "thin" racing versions of some Fg parts vs street |
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| brant |
Mar 19 2017, 09:37 AM
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#11
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914 Wizard Group: Members Posts: 11,622 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains
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Unfortunately I don't know the brands/manufacturer
The heaviest I have uses attachment points that is a piece of wood molded into the bumper. It is encased inside the Fg The lightest has an aluminum U bracket bolted through the ext face That bolt headshots from the outside but is painted. This bumper weighs 2lbs less The manufacturer's usually advertise the weights and even offer "thin" racing versions of some Fg parts vs street |
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