Rear bumper rubber spacers - Page 4 - Alfa Romeo Bulletin Board & Forums
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post #46 of 167 (permalink) Old 09-01-2018, 07:45 PM Thread Starter
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Rear bumper rubber spacers

Thank you Danny!

Here is the upper corner spacer design we will 3D print for testing in the real bumper. It has 10mm modified "D" exposed region and adapted angles to perfectly fit the interface between the two bumper sections.

If it works perfectly this model will be the final injection mold fabrication template.
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68 GTV Veloce - bianco spino - under restoration
97 V6 - 3.0 Spider - rosso 130

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post #47 of 167 (permalink) Old 09-02-2018, 01:37 AM
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Senza parola.

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
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66' Moretti 1100R
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post #48 of 167 (permalink) Old 09-02-2018, 03:52 AM
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I am looking forward to seeing these on a set of bumpers!

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Senza parola.


Mucca di agrifoglio; perché non migliorare su un design scadente?

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post #49 of 167 (permalink) Old 09-02-2018, 04:35 AM
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Perché la perfezione non è di questo mondo.

E che rispetto il lavoro degli altri.

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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post #50 of 167 (permalink) Old 09-02-2018, 10:52 AM
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hello.

they look very nice....

i have a set of rubber parts but where are they from?

regards,
john
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post #51 of 167 (permalink) Old 09-02-2018, 12:22 PM
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hello.

they look very nice....

i have a set of rubber parts but where are they from?

regards,
john
Hi John,

Those are used at the front and rear of the sill covers , I would be interested in these.

Regards,

Arnoud
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post #52 of 167 (permalink) Old 09-08-2018, 08:29 PM Thread Starter
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Rear bumper rubber spacers

Here are the pictures of the new spacers made in 3D printing using a flexible filament called FLEX and installed in the rear bumper. Thickness is 2mm. The exposed region is 10mm diameter and the angles were adapted to fit the interface between bumper sections. Of course you will not notice the 0.1mm 3D printer resolution fine lines in the final injected EPLD product, which will have a smooth surface.

As expected the results are very good. Comments and suggestions are welcome. If this design is approved I will proceed to final fabrication in EPLD material during next week.
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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 #53 of 167 (permalink) Old 09-09-2018, 08:52 AM
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Hi Edgar,

I like the new design and think it is a good start but the exposed portion appears much too thick, or tall. The original exposed part of the gasket has a 10mm flat 'D' profile as shown in the following photograph. The new design appears to have a 10 mm diameter radius, which may not allow the bumper to fit into the recessed area in the upper rear of the car.

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post #54 of 167 (permalink) Old 09-09-2018, 09:56 AM Thread Starter
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The new design appears to have a 10 mm diameter radius

Attachment 1524976

Mark
Thank you Mark for the feedback. Understood and agree, except the "10mm diameter radius". The 10mm is diameter not radius. The "D" must be a "Flat D". Walkie talkie! Will reduce the "D" section shape to about 6 to 8mm turning it flat.

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 #55 of 167 (permalink) Old 09-10-2018, 05:16 AM
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Hi Edgar,

You are right about the diameter being 10 mm and too large. Here is a picture of one of my old gaskets. The width of the "D" section as measured was 10 mm. The height of the D is only about 4 mm at the peak. Thanks for your effort and understanding to get this right.


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post #56 of 167 (permalink) Old 09-10-2018, 05:20 AM
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Hi Edgar,

You are right about the diameter being 10 mm and too large. Here is a picture of one of my old gaskets. The width of the "D" section as measured was 10 mm. The height of this 'D' is only about 4 mm at the peak. Thanks for your effort and understanding to get this right.

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Name:  D height of Bumper gasket.jpg
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post #57 of 167 (permalink) Old 09-10-2018, 08:53 AM Thread Starter
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Rear bumper rubber spacers

Hi Mark, thank you again. Will adopt 10 x 4 mm and will proceed to mold fabrication.
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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 #58 of 167 (permalink) Old 09-12-2018, 04:14 AM
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Edgar, could you include me for a set of the spacers as well please (sent to UK). Thanks Larry
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post #59 of 167 (permalink) Old 09-21-2018, 08:24 AM Thread Starter
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Rear bumper rubber spacers

Larry, just put your name in the list.

The double tool mold is being manufactured.

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 #60 of 167 (permalink) Old 09-21-2018, 09:49 AM
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Olà Edgar !

Any date ? Any idea of the cost ?

Obrigado.

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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