Dick Axtell
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 posted on 9/3/02 at 06:43 PM |
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Hi Jasper -
I bought an MK live-axle chassis, which will shortly undergo trial build. Re your comments about welding; this chassis still needs some additional
bracketry e.g. for front brake hoses, exhaust & pedal box attachment, so there will be some welding involved.
Have just returned from the Stafford show (definitely brass monkeys weather up there - nearly blown orff me feet!). RH now produce their own version
of a Locost chassis, as well as their new IRS model. Looks a distinct improvement over existing RH range.
I'd still recommend MK - I'll never be able to weld that well.
Cheers
Dick Axtell
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ChrisW
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| posted on 9/3/02 at 07:05 PM |
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I *finally* persuaded the Tripod server to let me have the file. I've now mirrored it on here (hope that's OK Ad?)
http://www.locostbuilders.co.uk/New_Sierra_irs.dwg
You will still need AutoCAD to view it though.
ChrisW
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Brian
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| posted on 10/3/02 at 03:52 PM |
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Hi bigdaddyadd
the file downloads fine if you right click on it and "save as" , maybe it would be easier if it was ziped ,as it would then download normaly.
pip pip Brian
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bob
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| posted on 10/3/02 at 07:14 PM |
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If you go for the MK sierra based indy,there is no welding at all.Even the floor mounted pedal box is in.
Its just drilling and rivnuts.
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Jasper
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| posted on 10/3/02 at 09:15 PM |
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Thanks for all the feedback, I've signed up for a welding night-school this summer term (with my Grandfather-in-law who's an 80 year old petrol head
and total dude)as if I've got save to buy a chassis for the next 6 months I way as well get on and make my own.
The next decision is to go by the book, live axle and use on old Cortina/Escort, or bring it into the 20th Century and go for the IRS sierra. I'm
planning to go the bike engine route as I crave the horses, so would like to know what advantages there are using a Sierra donor, buildiing an IRS
chassis from scratch but not using the engine. Am I better just using a live axle chassis with the bike engine? And what's the difference between an
Escort & Cortina donor?
yours in ignorance
Jasper
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Jon Ison
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| posted on 10/3/02 at 09:25 PM |
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the cortina axle is wider than the escort, but the cortina comes with uprights attached, your call. 
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Jasper
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| posted on 10/3/02 at 09:53 PM |
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Does that mean you have to cut down the axle, or just have a wide back end?
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Metal Hippy™
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| posted on 10/3/02 at 10:05 PM |
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Having a wide back end is a must for many Locosters so I've heard....
President of the Non-conformist Locost Builders Club. E-mail for details...
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Jon Ison
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| posted on 10/3/02 at 10:06 PM |
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Wide back end !!!!!!!!!!!! you saying i got a big arse ???????? lmao 
Two ways, wider back end or wider arch's, i got wider arch's with 205 tyres, a lot of people sya 205 is a bit wide but i think its ok on rear, fills
the arch's up anyway, don't like the caravan look you get with thinner wheels, like i said , your call
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Dunc
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| posted on 10/3/02 at 11:46 PM |
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Personally I preferred the sierra as the donor because they are cheap with readily available parts. Cortinas and older escorts are a bit harder to
come by these days. The good thing about a sierra is the IRS and the ease with which it can be converted to double wishbones. It also allows the
transmission tunnel to be narrower.
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Jasper
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| posted on 11/3/02 at 09:20 AM |
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God, I'm so confused, I've heard that if I go the SierraIRS route then I still need to use need Cortina uprights in the front - is this true? Is the
build more expensive/more difficult going the IRS way? Does it makes things harder to get bodywork if you build an IRS chassis?
And I have been looking around for Cortina's, and they are in short supply around here, only found one, Y reg and the guy want £500!!!
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James
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| posted on 11/3/02 at 11:12 AM |
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Check the photo archive here for pictures of the Sierra uprights and the bushes you'll need to use with them.
Basically, the Cortina fronts look a bit nicer and can be used as they come. Whilst the Sierra ones are a bit bigger (and presumably heavier) and
because they have a hole and pinch clamp for a macpherson strut also need an insert (bush) made of steel/ali to narrow the top whole enough for the
Transit top joint.
I'm planning on using the Sierra fronts as they're free with the donor and I'll be making the inserts at college. But these can be bought from
Dunc here or from MK and a few other places.
Regarding the IRS chassis- yes, it is more complicated because you will have to design your own mods to the book chassis so you can fit IRS- or copy
someone else's ie. MK's one.
Check the pictures here (the blue chassis ones are quite clear) and look at MK's Indy chassis.
Good luck,
James
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Dunc
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| posted on 11/3/02 at 01:42 PM |
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You can use any front upright you want. It is even possible to make your own if you are really bored. Although the sierra hub is heavier and doesn't
look as pretty it does come, in most cases, with vented discs. You can also get them off the donor and are easier to find in scrappies these days.
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