Rear bumper rubber spacers - Alfa Romeo Bulletin Board & Forums
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post #1 of 167 (permalink) Old 08-07-2018, 07:40 PM Thread Starter
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Rear bumper rubber spacers

Here is my original message posted at Montreal Parts (johni6020) thread:

"Two steel molds are being developed and I expect to get a pair for my car and put the rest here for selling at cost which is US$30 a set (4 units) just to get the molds payed. I am planning to use EPDM and be ready early September. I will run some tests in my car bumper using 3D printing prior to final prduction"

So far I received 20 sets confirmation - each set contain 4 units - which means I am moving forward.

Thank you!

Ed Bortolini
72 Montreal - Arancio Metallizzato - Finally Ready
68 GTV Veloce - bianco spino - under restoration
97 V6 - 3.0 Spider - rosso 130
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post #2 of 167 (permalink) Old 08-08-2018, 04:37 AM
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Hi,
I will take a set.

Thanks
Christopher Loda
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post #3 of 167 (permalink) Old 08-08-2018, 07:56 AM
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Hi Edgar,
I too would like to confirm I will take a set. You can P.M on here when you are ready. Thanks.
Regards Geoff
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post #4 of 167 (permalink) Old 08-11-2018, 01:26 AM
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Hi Edgar, I like to have set. Regards Arnoud
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post #5 of 167 (permalink) Old 08-12-2018, 04:08 PM
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Hi, Edgar!

I will also take a set. PM or post notice here when ready to ship and your preferred payment method. Paypal?:-)

Roger Long
'69 GTV - long gone but not forgotten
'95 164 Q
'71 Montreal
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post #6 of 167 (permalink) Old 08-12-2018, 04:50 PM Thread Starter
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Rear bumper rubber spacers

Thank you for your interest in the rubber spacers. I am sending PM to each one of you and I will keep you informed about the progress of this project. There is no need to send any payment at this time.

Ed Bortolini
72 Montreal - Arancio Metallizzato - Finally Ready
68 GTV Veloce - bianco spino - under restoration
97 V6 - 3.0 Spider - rosso 130
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post #7 of 167 (permalink) Old 08-13-2018, 04:44 AM
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Hi Edgar,
I will buy a set too.
Best regards, Alain.
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post #8 of 167 (permalink) Old 08-13-2018, 03:56 PM
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Hello Edgar!
I will take a Set of 4 as well, thank you.
With best regards,

Karl Robertson
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post #9 of 167 (permalink) Old 08-22-2018, 06:00 AM
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Hi Edgar,

I would also like a set of 4 bumper spacers.
Please add me to your list

Best Regards

Jeff Hecox

1971 Alfa Romeo Montreal, 1972 BMW 2002tii Alpina A4S, 1971 Triumph TR6, 1966 Porsche 912
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post #10 of 167 (permalink) Old 08-24-2018, 10:22 AM Thread Starter
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Rear bumper rubber spacers

Just to let you know I have the digital Solid Works drawings and will 3D print using FLEX polimer. If it works fine next week the two molds will be manufactured and in the week of Sept 3rd the final parts injected using EPDM material. Any suggestion is welcome at this time because this a cocreation process. Please notice that the peripheral cord is 5mm in diameter while the rubber spacer thickness is 3mm. If you feel these dimensions should be adjusted please let me know.
Attached Images
File Type: pdf Borracha 001.PDF (190.4 KB, 74 views)
File Type: pdf Borracha 002.PDF (187.9 KB, 50 views)

Ed Bortolini
72 Montreal - Arancio Metallizzato - Finally Ready
68 GTV Veloce - bianco spino - under restoration
97 V6 - 3.0 Spider - rosso 130
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post #11 of 167 (permalink) Old 08-24-2018, 09:04 PM
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Hi Edgar,

Thanks for your work on this project. The inside 'web' shape part of the gasket looks good. I suspect the web portion is only 1 or 2 mm's thick, at most. Unfortunately I've already put my gaskets back on the car and did not take any measurements.

However, the shape of the exposed gasket part (the part seen when the bumper is installed on the car) that covers the gap between the bumper segments appears to have the wrong profile in the attached drawing. I measured the best gaskets on my car and the exposed part measures ~8 to 10 mm wide, although some appeared to have shrunk and curled up some. The profile of the exposed part of the gasket is more the shape of a flattened out "D" on my parts.

Here is a link to some pictures of the bumper gaskets on my car. I hope this helps. If you have any questions, please let me know.

https://www.alfabb.com/bb/forums/alf...r-gaskets.html

Here is a photo of the exposed gasket that measures 10 mm wide.

Name:  IMAG5152.jpg
Views: 372
Size:  184.6 KB

Mark

Last edited by IRONBLOCK; 08-24-2018 at 09:23 PM.
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post #12 of 167 (permalink) Old 08-24-2018, 10:52 PM
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Spacers

Hi edgar!

I will take 2 sets = 8 pieces for my 2 montis.
Greetings and thank you for your Engagement in remanufacturing .
Gernot
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post #13 of 167 (permalink) Old 08-25-2018, 06:56 AM
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Hi Edgar,

A couple of things are probably apparent from the attached sketch. Unlike Paulo Labres, who has mad computer skills, I have none. Secondly the "flattened D" shape of the exposed gasket is attached to the 'web' area -tightly compressed between the bumper segments.

On my original gaskets, the rubber shrinkage was so significant it resulted in the exposed 'D' shaped gasket retracting between the bumper segments. This was similar to a turtle pulling his head back into its shell. Once the bolts that hold the gasket segments in place were removed, I was able to reposition the gaskets so that they covered the joints between the bumper segments again.

Name:  IMAG5154.jpg
Views: 368
Size:  133.6 KB

Edgar, do you have a set of original bumper gaskets or are you working mainly using the bumper profile?


Mark
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post #14 of 167 (permalink) Old 08-25-2018, 02:43 PM Thread Starter
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Rear bumper rubber spacer

Quote:
Originally Posted by zagato^1600 View Post
Hi edgar!

I will take 2 sets = 8 pieces for my 2 montis.
Greetings and thank you for your Engagement in remanufacturing .
Gernot
Thanks for supporting this project Gernot! Will send you a PM.

Ed Bortolini
72 Montreal - Arancio Metallizzato - Finally Ready
68 GTV Veloce - bianco spino - under restoration
97 V6 - 3.0 Spider - rosso 130
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post #15 of 167 (permalink) Old 08-25-2018, 04:20 PM
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If it can help, I could make good pics of my original (but really used !!!) ones.

Or even ship one ?

70' Ghibli SSS (one-off - featured in Octane UK #183 + Octane Deutschland #38)
63' 2600 Touring H-Top S.1
64' 2600 Touring H-Top S.2
74' Montreal
66' Moretti 1100R
76' Fiat 130 Coupé
68' Datsun Roadster 2000 Racing...

16' 991 GT3 RS soon...
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