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Chris Bucknell
Australia
107 Posts |
 Posted - 08/07/2012 : 03:03:27
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Hi All,
After a pair of N-Type front trunnion boxes to assist with restoration.
Regards,
Chris |
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george
United Kingdom
863 Posts |
Posted - 08/07/2012 : 08:36:49
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| I got some bare castings from Ron Grant a couple of years ago ,they machined up well. Geoff |
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PeterL
United Kingdom
1730 Posts |
Posted - 08/07/2012 : 09:00:58
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Does he do the covers as well?
Cheers
P |
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rossk
United Kingdom
495 Posts |
Posted - 08/07/2012 : 09:09:40
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Are N trunnions the same as the K as we are having some trunnion lids laser cut next week.
Can any one help on the thickness of the lids?
Ross Keeling |
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george
United Kingdom
863 Posts |
Posted - 08/07/2012 : 09:54:18
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| No Ron did not do covers and yes they are i think the same as n,I made up a pair out of 5mm plate and they seem fine Geoff |
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Andy Rogers
United Kingdom
302 Posts |
Posted - 08/07/2012 : 10:02:46
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I'm sure others will know better than I but I thought that although the K and N boxes are basically the same size - ie to take the wider springs - the K casting, and therefore lid, has 5 fixing points whereas the N casting has only 4.
Right or wrong ?
Andy Rogers |
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paul55
Luxembourg
732 Posts |
Posted - 08/07/2012 : 11:14:03
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Andy,
N type trunnion boxes are made for a chassis where the rails at the front are not parallel, so the spring slot is at an angle to the mounting, where K type boxes are made for a parallel chassis rails so the spring slot is parallel to the mounting. I hope I have explained this clearly. They are not interchangeable, or the same.
Paul. |
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george
United Kingdom
863 Posts |
Posted - 08/07/2012 : 12:43:07
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| On my car N902 [origional chassis] the chassis rails are parallel over the length of the front spring,the rails then diverge to a point in front of the rear spring forward mount .The trunnion boxes I have fit well and have 5 bolt covers.Geoff |
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George Eagle
United Kingdom
3244 Posts |
Posted - 08/07/2012 : 19:54:56
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The covers on the trunnion boxes on NA0960 have only 4 bolts as have my spare set of N type trunnion boxes. As far as I know the boxes fitted are original - the car had never been dismantled when I first bought it.
Why only 4 bolts as against 5 on those fitted to Js, Ps and Ls which are all smaller and lighter than an N? 
George
L2023 and NA0960.
Nr Buckingham, UK
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powerplus
United Kingdom
599 Posts |
Posted - 08/07/2012 : 20:13:28
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Paul,
If you have a look at the picture of an N chassis on page 10 of the owner's manual you will see that the front section of the chassis is parallel from the dumb iron to behind the trunnion box. The springs therefore enter the trunnion box in line with the chassis.This means that the N trunnion box casting is basically the same as the K.
As Andy rightly points out, the K has five bolts to secure the cover plate whilst the N has four.
Powerplus. |
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powerplus
United Kingdom
599 Posts |
Posted - 08/07/2012 : 20:28:21
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Ross,
The cover for the trunnion box has an overall depth of 0.25". The upper flange section is 0.125" thick and the underneath circular section which acts as the end stop for the trunnions is also 0.125" thick.
Powerplus.
PS I need one for an N. |
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paul55
Luxembourg
732 Posts |
Posted - 09/07/2012 : 08:42:49
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Made a mistake, sorry just checked again.. Alan is correct....bit of brain fade.
Paul. |
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paul55
Luxembourg
732 Posts |
Posted - 09/07/2012 : 08:51:13
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just a follow up, did a real "Q" type have K or N type front trunnion boxes?
Anyone know?
Thanks
Paul. |
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