Bumper Weight

[Bill77]

I just weighed the front bumper assembly (with turn signals and gas struts) from my '77 Spider. It weighs 49 lbs. !!!! I don't have the original rear bumper to weigh. My car has a fiberglass rear bumper installed by the PO. It weighs 15 lbs.

Has anyone ever weighed a mid-seventies rear bumper? If it is anything like the front, it probably weighs close to 50 lbs., too.

How about the earlier stainless steel bumpers? I am planning to install the earlier bumpers and expect a decent weight savings (and better styling, in my opinion).

Just fabricated bumpers for my spider 46 ilbs for Federal rear 14 ilbs for stainless. 20 for modified TR 6

[ALfemale]

It's been my experience due to looking into shipping of old rubber over metal bumpers that they run around 50lbs. Now the falling apart rusted one might have a pound or so more.

Hope that helps.

Sarah.

[Bill77]

Thanks for the info. It appears that converting from the rubber bumpers to the early stainless type will save about 60 to 70 lbs. Not bad!!

Weight Savings could be a whole new thread, Any interest?

[PMMessina]

Where did you find the s/s bumpers?

[Bill77]

I haven't found any yet.

Spider-Point in Germany offers a complete conversion kit, but it is very expensive especially with recent exchange rates. Their website is http://www.spider-point.com/aspidhom/aspiframe.html

I'll probably buy their kit but want to redo the body/paint first. There's a thread on this topic. Search "Spider-Point Bumpers".

[conedriver]

Greetings, Continuing the discussion on weight of black bumpers and the Spider point replacement; my anti virus stripped the Spider point catalog, but they responded that the old style bumpers are in stock:

AR4005-31, front bumper left, cplt. unit incl. turn signal, 306,- E
AR4005-32, same right, 306,- E

AR4024-300, rear bumper, 70-75 US, 440,- E

shipping to the US by postal premium service (5-10 day's) close to 100,- E

I currently have a black bumper on my '76 Spider, with a large notch cut in the middle to allow use of a '74 grille. However, the steel is rusting badly under the rubber and I am considering the spiderpoint versions for asthetics and weight reduction.

For those of you that have converted to these bumpers, Spider point they doesn't mention any sort of adapter bracket, is this included in the price?. Also, do the adapter brackets increase the amount the front bumpers project from the bodywork?.

Thanks,

I bought a set of used Stainless bumpers for my spider and decided that they looked to "heavy" So i picked up some TR units from a salvage yard and fabricated new units. I will complete the conversion this winter. I picked up a new TR 6 rrear center unit from Moss Motors for less than $200 that has 2 holes for the license lights that will accept the stock Alfa units and the end caps will be rechromed, when refitted the bumper will be mounted 1" lower than it is now, the Front is a Spitfire unit that will be beveled similar to a Guilia SS center bar and then rechromed, the mounting brackets bolt to the shock mounts and I can provide prints if anyone is interested. I think (IMHO) the Duetto bumpers are the "cleanest" looking spider bumpers, but I think these look better than the Kamm tail units.

this is the front

[conedriver]

Hey, alfa-of corse,

I can't view your bumper installation since my anti-virus strips the images (any ideas for viewing?). And, do you still have the old style Alfa stainless steel Spider bumpers?. I need to use stock bumpers for SCCA Solo II competition, and might be interested in your front units if a possible local source doesn't work out. What condition are your bumpers in, would you sell the fronts only, and what kind of price would you have in mind?.

Thanks,

with my anti-virus I have to enable cookies and ads to view images on the BB, I need a few parts for my front bumpers, but I was planning to redo them, fabricate brackets and sell front and rear as 1 item at some point in the future, But not at this time. Bumpers are also listed at www. classisalfa.com a British co. little less than $400 us for each front and $550 for the rear, not sure about shipping.

George, this might be worth checking, a Giulettia sprint on ebay, 2 pictures show what looks like a stainless bumper spider parts car, might e-mail seller an ask. I don't know how to link to the ebay page, but check under current.

[conedriver]

Hi alfa of-corse,

I checked several Giulietta sale pages images on Ebay, but coudn't see anything in the background with stainless bumpers.

I am still mulling over how to proceed with my Spider. It is a '76 with an original "rubber" bumper that I cut in the middle to mount an earlier grille (LOTS of work). I had to retract the bumper shock absorbers mount in order to do this, and the result was very pleasing. The high weight remained, however, and now a part of the bumper is bulging due to internal rust on the steel inner section.

I have two versions of bumper mounting brackets for the earlier stainless bumpers; I believe one is for a 1971 1750cc Square tail car where the bumper fronts are smooth rubber and each section bolts into two slotted holes, and one for the later 2000cc cars (1973-74?) having square protrusions on each side, and mounting into two round holes. Neither of these brackets comes anywhere close to bolting to the 1976 bumper mounts although the later brace appears to be more suitable. I assume the reproduction bumper sections can be had that fit either mounting style. correct?.

So I have three choices:
1. Buy reproduction or used bumper sections to fit the early mounting brace (approx. 1 1/2 in square cross section)
2. Buy reproduction or used bumper sections to fit the later brace (approx 2 x 4 in cross section)
3. Remove the rubber covering from my existing (modified) bumper, remove the rust, and reassemble (possibly addressing the weight issue while the rubber is off). Has anyone actually done this, and can the rubber covering be removed and reassembled so it looks original?

All comments welcome.

The Giulietta Sprint is listed under "new today", its listed as SCCA body, that GT jr mustard color with a white meatball and 37 on the side, and the blue spider is just visiable in the 2nd and 3rd picture on left side of images, I can't offer any advice on the brackets, I was just going to fabricate a brace that bolts up to the shock mounting locations and mount the bumper to that. That's what I did to attach the Spitfire parts to the frt. each side is 2 pcs 1 pc bolts up at shock mounts and is bent back 2 times, the end of the bumper bolts to that, another peice bolts to the first bracket and is bent to extend forward and to the center and the bumper attaches there. the picture shows the spitfire bumper and a 74 bumper, the cardboard piece represents the modification needed to mount to shock mount, just cutting out the bracket and replacing with a right angle piece, or making a whole new piece, if you can't view the picture just send a pm with your Email address and I'll send them out.