the_big_1
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| posted on 27/6/16 at 07:47 PM |
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IVA Steering
Hi Guys,
I have fitted a MX5 MK1 steering column and also the below layout (Another bearing to add for support to be added)
Would the angle and having an MX5 column be acceptable for IVA?
Cheers!
[img] [/img]
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ReMan
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| posted on 27/6/16 at 07:57 PM |
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If the column has a collapse built in and you've already got plenty of angles in the linkages that should be sufficient i think
www.plusnine.co.uk
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luke2152
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| posted on 27/6/16 at 08:00 PM |
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I think the guidleline is 30 degrees but it's not a hard rule its at the IVA guys discretion. He has to decide if the vehicle has
'protective steering'.
For what its worth I failed with no angle (I thought it was ok because I had a collapsible column) and passed the retest with a similar angle to yours
but my angle was where the column met the steering rack.
I think yours will be fine.
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the_big_1
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| posted on 27/6/16 at 08:00 PM |
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Great stuff!
Do you need a collapsible / deforming steering wheel too? I havent purchase a steering wheel yet.
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owelly
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| posted on 27/6/16 at 10:59 PM |
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Also......check your U/J's are in phase to prevent lumpy steering!!
http://www.ppcmag.co.uk
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the_big_1
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| posted on 28/6/16 at 06:12 AM |
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Hi ya,
The uj's are not fixed yet, was just to show the layout etc.
cheers!
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JeffHs
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| posted on 28/6/16 at 09:24 AM |
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I thought I had all the bases covered with collapsible Sierra column and angles but still failed on a solid mounted Mountney. Had to fit a collapsible
adaptor behind the wheel which brought the steering wheel back 3 inches and completely messed up my bespoke installation!
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big-vee-twin
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| posted on 28/6/16 at 11:32 AM |
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Dont forget to make sure the steering self centres, which will be more difficult with the more joints you introduce.
Duratec Engine is fitted, MS2 Extra V3 is assembled and tested, engine running, car now built. IVA passed 26/02/2016
http://www.triangleltd.com
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the_big_1
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| posted on 28/6/16 at 11:37 AM |
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Yeah good point. I wont know until car is a rolling chassis but I am hoping with just the four UJ's and shallow as possible angles, it should?
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the_big_1
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| posted on 28/6/16 at 11:56 AM |
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Looking at the IVA, I can not see any instruction on wheel position, i.e height to driver.
I guess as long as not to low to cause obstruction to body / legs etc and not to high to be difficult to reach or block view is fine?
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Toys2
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| posted on 28/6/16 at 06:22 PM |
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Is one bearing enough? I wonder if those sections could rock as you have 4 UJ's
I think that I would have gone for 2 bearings on the one section, well separated
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the_big_1
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| posted on 28/6/16 at 06:33 PM |
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Hi,
Yeah I am in the process of adding another and moveing the current one more outer.
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Toys2
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| posted on 28/6/16 at 09:38 PM |
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quote:
Originally posted by the_big_1
Hi,
Yeah I am in the process of adding another and moveing the current one more outer.
Should be a good setup
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907
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| posted on 29/6/16 at 06:04 AM |
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Rod ends would make lighter and neater support bearings rather than pillow blocks.
Dennis at Norwich IVA made a big thing about the wheel collapsing towards the dash should my body contact it in a crash.
I used a Vauxhall column that bolts solidly to the chassis & scuttle frame (engine compartment rear bulkhead in the donor)
but has an expanded metal cage between this and the steering wheel so is designed to collapse forward.
He was more concerned with this area than the telescopic shaft or the 11 deg (min) dog leg in the scuttle to rack section.
The way I see it is, if your body hits the wheel then the wheel should collapse, and in a head on impact the front column
should collapse or deflect, or both. The wheel shouldn't be able to come back towards the driver, hence somewhere in the
middle must be solidly mounted.
Paul G
[Edited on 30/6/16 by 907]
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the_big_1
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| posted on 29/6/16 at 06:38 AM |
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Hi,
I am looking at rose joints as we speak!
I have the MX5 column mounted solidly to dash frame work at the same location as the donor would be.
Then the lower half after the collapse part, is mounted to the front bulkhead.
Then will be the two UJ's to the intermediate shaft, to bearing mounts, then two UJ's to the rack.
Cheers!
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pekwah1
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| posted on 29/6/16 at 03:47 PM |
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It looks to me that you may have welded some of the connecting rods together.
I had done the same, and during my IVA the tester failed me on that saying that the steering column can't have welded pieces.
I argued about the entire car having been welded together, but he was sticking to it and i had to buy specific made length spline rods and UJ's
in the end to satisfy....
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theconrodkid
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| posted on 29/6/16 at 03:58 PM |
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Re the welding,i sleved mine and put a roll pin in then welded...all bases covered. 
who cares who wins
pass the pork pies
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the_big_1
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| posted on 29/6/16 at 08:34 PM |
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Lol mine are sleaved and pined too.
Some joints are welded from the doner vehicle as the shafts are from vehicles with UJ's already fitted
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907
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| posted on 30/6/16 at 04:58 AM |
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quote:
Originally posted by theconrodkid
Re the welding,i sleved mine and put a roll pin in then welded...all bases covered.
Hi Conrod,
No offence intended, but I hope you didn't mean that you welded the roll pin.
Absolute no no that one.
We wouldn't want to mislead others.
Cheers
Paul G
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the_big_1
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| posted on 30/6/16 at 06:21 AM |
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Hi All,
Are we saying that there can be no weld on the steering shafts at all?
The donor car I have steering shafts are welded?
If welding is ok, is there a particular set-up i.e if welding at a UJ, has to have shaft in UJ then cleave over shaft etc.
I am confused as a lot of kit car part suppliers sell UJ's "Ready to be welded to your own shaft"
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pekwah1
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| posted on 30/6/16 at 06:52 AM |
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Honestly i think it really depends on the IVA tester on the day like a lot of these things.
All i can say is that they refused to pass mine (amongst other things) because the steering column had been welded
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