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200 Series General Forum for the Volvo 240 and 260 cars |
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New (to me) 1980 Volvo 244Views : 2026589 Replies : 4092Users Viewing This Thread : |
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Sep 23rd, 2020, 16:02 | #1741 | |
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If the boot weights about 20 lbs, and there is a mechanical disadvantage via the mechanism to the strut of 1:10 (the boot lid moves perhaps 30” as the strut moves through about 3”), then the force due to the gas being fully compressed would have to be at least 200 lbf. Now, if the area of the piston in the strut is about 1”^2 then that makes 200 PSI, but of course there are two of them, so 100 PSI should do. In practice the pressure might be a bit higher as it probably won’t drop to zero at full extension of the strut. So, with a pressure of 100-150 PSI (even if they have leaked a bit over the last 4 decades) I don’t think it would be a good idea to drill into the struts! :-) |
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Sep 23rd, 2020, 16:38 | #1742 | |
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If nothing else that will prove the point that the struts are weak. I've never weighed a boot lid but would guess the weight to be nearer 20kg than 20lb so 44lb at a guess. Even splitting the difference i think we'd both be closer. Putting it in perspective, a steel wheel is ~10kg/22lb so you can understand how i'm suggesting the weight of the bootlid.
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Sep 23rd, 2020, 20:22 | #1743 | |
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You are almost certainly right about the boot lid's weight - but all the figures I used were order of magnitude estimates whilst sitting in the parent's car park in the rain. I think the outcome (that the pressure was a bit high to risk drilling in to) was right though :-) Alan |
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Sep 23rd, 2020, 21:49 | #1744 | |
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Cheers Dave Next Door to Top-Gun with a Honda CR-V & S Type Jag Volvo gone but not forgotten........ |
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Sep 24th, 2020, 07:41 | #1745 | |
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Now I just have to work out how to get those fasteners undone! Alan |
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Sep 24th, 2020, 08:27 | #1746 | |
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Sep 24th, 2020, 09:27 | #1747 | |
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https://www.sgs-engineering.com/car-boot-tailgate/volvo This isn't a new thing, many sites use the wrong images and at least this one has managed to use Volvos on the Volvo page!
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Sep 24th, 2020, 09:37 | #1748 | |
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Regular readers will be expecting this. How about a revolutionary approach as I have been designated comrade. Contact one of those Volvo dealers who do give a fig. And if they can obtain the correct component the price might even be a reasonable surprise. That does often happen. Comrade Stephen Edwin . Last edited by Stephen Edwin; Sep 24th, 2020 at 09:39. |
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Sep 24th, 2020, 09:40 | #1749 | |
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Sep 24th, 2020, 09:59 | #1750 | |
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Thank you David for that useful post. Has the search been raised with one of the several rather diligent among those Volvo dealers who do give a fig? The prat (sic) number might help by the way. An interweb images search might help to identify the part. And the number might even find a supplier. I testify that such things have happened. Comrade Stephen Edwin . |
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