Posted by Rope on August 14, 2008, 12:06 pm
Antonye spoke:
> The other interesting one is wheels - 120/70x17 is a common
> measurement for a front tyre [tire] but it means 120mm wide
> with a 70% aspect ratio on a 17" wheel rim. Go figure.
Heh - I just checked with Krzysz, my Polish friend, and they
use the same tyre size designation - he also (being ex-Polish
Army) said the Kalshnikov calibre is 7.62mm, which happens to
be exactly 1/3"
--
Rob_P
UKRM(at)indqualtec.co.uk
uppercase(d) BBIWYMC#1 BOG#11? MRO#31 IBCDBBB#1(kotl)
FJ1200, CCM130 Benelli Cabiolet
Easily confused.
Posted by Andy Bonwick on August 14, 2008, 12:00 pm
>Antonye spoke:
>> The other interesting one is wheels - 120/70x17 is a common
>> measurement for a front tyre [tire] but it means 120mm wide
>> with a 70% aspect ratio on a 17" wheel rim. Go figure.
>Heh - I just checked with Krzysz, my Polish friend, and they
>use the same tyre size designation - he also (being ex-Polish
>Army) said the Kalshnikov calibre is 7.62mm, which happens to
>be exactly 1/3"
That must be Polish inches and not British ones then.
7.62mm is 0.3" and that's a 'nothing' size in engineering.
Posted by Dr Ivan D. Reid on August 15, 2008, 3:44 am
>>Heh - I just checked with Krzysz, my Polish friend, and they
>>use the same tyre size designation - he also (being ex-Polish
>>Army) said the Kalshnikov calibre is 7.62mm, which happens to
>>be exactly 1/3"
> That must be Polish inches and not British ones then.
> 7.62mm is 0.3" and that's a 'nothing' size in engineering.
Bleddy hell! I first handled L1A2 ammo back in the '60s but I
never made that connection. I knew it was as close as dammit is to swearing
to 0.303" but never realised it was exactly 0.3".
--
Ivan Reid, School of Engineering & Design, _____________ CMS Collaboration,
Brunel University. Ivan.Reid@[brunel.ac.uk|cern.ch] Room 40-1-B12, CERN
GSX600F, RG250WD "You Porsche. Me pass!" DoD #484 JKLO#003, 005
WP7# 3000 LC Unit #2368 (tinlc) UKMC#00009 BOTAFOT#16 UKRMMA#7 (Hon)
KotPT -- "for stupidity above and beyond the call of duty".
Posted by Scraggy on August 16, 2008, 4:11 am
Dr Ivan D. Reid wrote:
> On Thu, 14 Aug 2008 18:00:41 +0200, Andy Bonwick
>>> Heh - I just checked with Krzysz, my Polish friend, and they
>>> use the same tyre size designation - he also (being ex-Polish
>>> Army) said the Kalshnikov calibre is 7.62mm, which happens to
>>> be exactly 1/3"
>> That must be Polish inches and not British ones then.
>> 7.62mm is 0.3" and that's a 'nothing' size in engineering.
> Bleddy hell! I first handled L1A2 ammo back in the '60s but I
> never made that connection. I knew it was as close as dammit is to
> swearing to 0.303" but never realised it was exactly 0.3".
Part of the problem of calibre is where the measurements of the weapon are
taken.
.308 Winchester is civvy 7.62mm but the weapon is measured groove bottom to
groove bottom IIRC. It will, however, take a NATO standard 7.62 mm. IYSWIM
--
I don't care to belong to a club that accepts people like me as
members. Groucho Marx
Posted by SaladDodger on August 14, 2008, 12:15 pm
> 7.62mm, which happens to
> be exactly 1/3"
In what universe?
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> measurement for a front tyre [tire] but it means 120mm wide
> with a 70% aspect ratio on a 17" wheel rim. Go figure.