balidey
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| posted on 5/1/06 at 08:32 PM |
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Triumph Herald front uprights?
Hi all,
I have been planning to start on a locost (or self built Avon) for a while and been lurking on here trying to get as much info before i start. One
question, why are Triumph Herald uprights not used? I seem to remember being told that a lot of proper racing cars (several other Chapman cars, some
TVR's, i think formula ford and some others) used Herald uprights, and some component suppliers even made pattern parts so there could be plenty
of them available, and i seem to think alloy versions were also made. So are they suitable, has any one here used them, or have I just been given some
duff information? Your answers are much appreciated.
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rusty nuts
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| posted on 5/1/06 at 08:41 PM |
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Lots of cars have used them over the years but I remember seeing one at Stoneleigh a couple of years ago (can't remember what car it was ) where
the lower trunnion had failed and the suspension had collapsed which wasn't uncommon. If you use them make sure you lubricate with the correct
oil (EP90 I think) DO NOT USE GREASE.
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britishtrident
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| posted on 5/1/06 at 08:43 PM |
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Most of the alloy ones suffer from fatigue -- I wouldn't consider for a street car in any case the standard is light enough.
What you want is a GT6 or Vitesse upright -- the bog standard part as found on most surviving Heralds and Spifire isn't really suitable as
about 1962 or so the design was changed to a one piece casting before this date the king pin, steering arm and brake caliper bracket bolted
together. However the older design continued on the Vitesse and GT6 which also have the advantage of bigger brake discs.
The small Triumph PCD matches the Marina or Toledo rear axles
The subject has been discussed at length in the forum in the past so a search should reveal quite alot of info.
You might also want to consider using Metro front end parts minus the drive shaft as this is exactly what is used on the MGF and MGTF.
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JonBowden
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| posted on 5/1/06 at 08:50 PM |
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what is the benefit of the Metro front end parts ?
Jon
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Mark Allanson
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| posted on 5/1/06 at 09:23 PM |
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Virtually free, readily available, proven design in a mid engined car, very cheap consumables, 4 pot calipers without any adaptions - thats enough
If you can keep you head, whilst all others around you are losing theirs, you are not fully aware of the situation
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zetec
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| posted on 5/1/06 at 09:24 PM |
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Don't Cateringvans use a GT6 upright? Good idea as nice and lightweight and designed for LSIS style front end.
" I only registered to look at the pictures, now I'm stuck with this username for the rest of my life!"
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JonBowden
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| posted on 5/1/06 at 11:06 PM |
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quote:
Virtually free, readily available, proven design in a mid engined car, very cheap consumables, 4 pot calipers without any adaptions - thats enough
Ok, sounds good. So can we forget about Sierra and Cortina uprights. What do we need at the back so that the same wheels fit at both ends?
Jon
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gazza285
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| posted on 5/1/06 at 11:17 PM |
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quote:
Originally posted by JonBowden
Ok, sounds good. So can we forget about Sierra and Cortina uprights. What do we need at the back so that the same wheels fit at both ends?
Why bother, Dutton didn't.
As BT said, Marina or Toledo. Or if you want independant rears, there's loads of racecar uprights that use 3&3/4" PCD and as a
concequence there's loads of 13" racecar rims cheap, and disc brakes, alloy callipers to suit, wishbones etc etc......
Your pockets the limit here .
DO NOT PUT ON KNOB OR BOLLOCKS!
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Mark Allanson
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| posted on 5/1/06 at 11:19 PM |
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If you want to go the front engine, rear drive route, I think that marina/moggy rear axles will suit.
Remember that for a midi, the metro bits will be fine, but the steering arm is at the rear of the hub, so book chassis layouts may be a little more
complicated.
If going midi, another set of metro fronts will do the trick
If you can keep you head, whilst all others around you are losing theirs, you are not fully aware of the situation
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TL
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| posted on 6/1/06 at 12:10 AM |
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Hi Balidey
I have a pair of GT6 uprights fitted with ally hubs (4 stud Ford) and new 266mm vented discs with refurbed GT6 calipers, inc new wheel bearings. They
were tailored to fit some 14" Revolutions I have. A change of plans means that I am now not going to use them.
I also have some upper wishbones, but no lowers.
If you are interested, let me know.
The Revolutions & OK tyres are also up for grabs
Cheers,
Terry
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Mad Dave
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| posted on 6/1/06 at 09:53 AM |
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quote:
Don't Cateringvans use a GT6 upright? Good idea as nice and lightweight and designed for LSIS style front end.
These are what Caterham use. U2U me if you would like a contact name and number!?! They manufacture many classic car parts as well as some not so
classic parts.
 
Description
 
Description
 
Description
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britishtrident
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| posted on 6/1/06 at 10:34 AM |
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Nice :-)
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britishtrident
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| posted on 6/1/06 at 10:35 AM |
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MGTF front suspension
 
Rescued attachment ScreenShot001.jpg
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britishtrident
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| posted on 6/1/06 at 10:35 AM |
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more MGTF
 
Rescued attachment ScreenShot002.jpg
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britishtrident
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| posted on 6/1/06 at 10:37 AM |
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Top wishbone MGTF
very much as per Mini and Metro
 
Rescued attachment ScreenShot003.jpg
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Syd Bridge
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| posted on 6/1/06 at 11:27 AM |
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MG TF has a beam axle, drum brakes, and big wire wheels, doesn't it ?? I had two in Aus in my youth.
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britishtrident
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| posted on 6/1/06 at 01:04 PM |
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54 TF was best MG ever made -- loved the steering response and lots of oversteer
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cymtriks
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| posted on 7/1/06 at 11:22 PM |
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quote:
Originally posted by Mark Allanson
If you want to go the front engine, rear drive route, I think that marina/moggy rear axles will suit.
Remember that for a midi, the metro bits will be fine, but the steering arm is at the rear of the hub, so book chassis layouts may be a little more
complicated.
If going midi, another set of metro fronts will do the trick
The picture of a TF suspension shows a separate bolt on steering arm. If the TF upright is a Metro one then the Metro steering arms should also be
detachable?
Could the originals be reversed?
If the MG/Metro and the Triumph uprights are so good why isn't everyone using them in preference to bodge modified Ford units?
Doesn't the Lotus Elise also use MGF/Metro stub axles in an alloy upright?
What is the geometry like on the Triumph/MG uprights? Srub radius with standard offset wheels? King pin angle?
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britishtrident
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| posted on 10/1/06 at 04:24 PM |
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Trumph as fitted to Lotus Elan Sprint - KPI s 9 degrees --- these cars ran zero camber.
MGB--- KPI 8 degrees at camber +1 degree ,
The caster was set at 7 degrees.
[Edited on 10/1/06 by britishtrident]
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