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Ian C
Ian C
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FINLEY Offline OP
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BSA a7ss 1960
I’m looking for a set rings +030 they seem hard to find
The pistons are AE 11603A 66mm what other make of rings will fit this piston help would be appreciated

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Use this search using your pore size and ring thickness to see if total seal make a suitable ring/rings

http://webcatalog.totalseal.com/Home/diameter

You still need to consider the depth of the groove.

Each piston manufacturer has their own preference for ring dimensions plus technology moves over time. Only a ring maker matching a Hepolite (piston maker for AE) piston will be an exact match or you may be lucky and find one close enough.

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Standard bore on an A50 is 65.5mm so if your after 66mm it’s possible that +20 A50 rings will fit.


Now let’s all have a beer beerchug

68’ A65 Lightning “clubman”
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FINLEY Offline OP
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kommando i did manage to match up some hepolite r.1550 +030 but these are hard to get hold of
there not on the hepolite parts list website theres loads of +20 +40s but no +30s il give totalseal ago

Last edited by FINLEY; 01/23/21 2:17 pm.
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I thought the standard bore for the A7 was 66mm, so +0.030" would be approx 66.75mm? I don't know what piston suppliers offered in the past, but BSA seemed to only list + 0.020 and 0.040" oversizes.
You could try these people? https://www.fwthornton.co.uk

Last edited by Ian C; 01/23/21 3:46 pm. Reason: Added a web page link

Just a few Beezers..

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FINLEY Offline OP
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Yes Ian your right about the standard bore iv search a few forums and the web and they are like finding hens teeth I’m might pop down to Tms Nottingham it’s not to far from Sheffield they could match something up

Last edited by FINLEY; 01/23/21 7:38 pm.
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Hi Finley,
Contact Cox and Turner with all the dimensions of the rings you need
https://www.coxandturner.co.uk/

John

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British only in austria has +40 ones.
10 mins with a file to set end gaps and you'd never know the difference once run-in.

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If you are ever stuck for rings, this fellow makes them and may be willing to help you out. I think he is originally from your part of the world so speaks your language.

http://www.deves.com/cycles.php

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FINLEY Offline OP
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Thanks for the replies guys much appreciated il make some phone calls Monday

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FINLEY Offline OP
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just phoned cox and turner i give them the part number of the piston and they have them instock and posting them today £65 + postage


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