Rosco
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| posted on 22/8/16 at 10:01 AM |
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Ride Height - what do you suggest?
I'm coming towards the end of my Fury build and not sure what ride height I should aim for. I'm clear about the 1" front-back rake
recommended for a Fury but the Sump is the lowest point and I'd appreciate your thoughts on required sump ground clearance for road use as this
will drive the whole setup. I would like it to be as low as possible but am also obviously keen to avoid bottoming out and damaging the sump.
Thanks
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loggyboy
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| posted on 22/8/16 at 10:14 AM |
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From chassis base to floor - 100mm front and 130mm rear from what I recall.
Mistral Motorsport
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HowardB
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| posted on 22/8/16 at 10:23 AM |
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not sure if you'll have to "jack it up" a bit to get the headlights to the correct height for the IVA.
Mine are low-ish now it is at the correct ride height
HTH
Howard
Fisher Fury was 2000 Zetec - now a 1600 (it Lives again  and goes zoom)
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Sam_68
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| posted on 22/8/16 at 10:46 AM |
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quote:
Originally posted by Rosco... thoughts on required sump ground clearance for road use as this will drive the whole setup.
I've run 75mm sump clearance on the road, without any difficulties. Another car with 55mm clearance suffered a couple of cracked sump pans, and
I had fit a shallower sump.
Is your sump alloy or pressed steel? Steel tends to pick up the odd dent and scrape, but survive; alloy tends to crack if it gets a good knock.
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adithorp
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| posted on 22/8/16 at 11:18 AM |
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I run 120mm front and 140mm rear. Front measured from chassis cross member and rear at the cross member behind the seats. Sump sits now with a skid
that's 80mm from the floor.
"A witty saying proves nothing" Voltaire
http://jpsc.org.uk/forum/
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russbost
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| posted on 22/8/16 at 12:13 PM |
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Depends if you have speed bumps in your area & what type, most speed bumps are around 100mm, so anything lower than that & your likely to give
the sump a wallop at some point, personally if I were running less than 100mm I would put some sort of basic skid (doesn't need to be a heavy
duty sump guard) under the sump, so if you make contact with anything you have something which will lift the load on the front suspension & allow
the sump to slide over the obstruction without likely damage.
I know someone who was running 75mm under the sump & I think he went thro' either 2 or 3 b4 he got the message!
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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benchmark51
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| posted on 22/8/16 at 01:00 PM |
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I have 100mm on the front and 130 at the rear. However I never 'straddle' speed humps, I slow down a lot and make sure one or the other
wheel goes over the hump. It makes sure the sump is lifted a bit, has worked up to now.
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rodgling
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| posted on 22/8/16 at 08:13 PM |
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I have ~80 mm clearance under the sump, it's OK but I have to be careful over speed bumps. The sump gets the odd scrape and has had a few hard
hits which twice snapped the gear linkage (this mounts to both the engine and the chassis so seems to be the weak link when the engine takes a hit,
probably not a bad thing).
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David Jenkins
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| posted on 22/8/16 at 09:27 PM |
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I think people are confusing 'ride height' with 'ground clearance'. Ride height is the height of the chassis at the front and
rear, and is mostly defined by the chassis and suspension design - they have to be a certain height to get the suspension arms at the correct
angle.
Ground clearance is when you've got the ride height correct and look under the car see what's likely to get knocked off on the next speed
bump 'cos it's dangling below the chassis too far!
[Edited on 22/8/16 by David Jenkins]
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tymkea
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| posted on 13/9/16 at 01:49 PM |
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If you were competing in an open class (single seater racing cars), then the MSA (UK) would require a 40mm ground clearance with you on board and
fuelled up ready to run.
Sports racing cars have the same rule.
Road derived cars usually run around double that.
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ian locostzx9rc2
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| posted on 13/9/16 at 05:24 PM |
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Raw for the striker was 120mm front 140mm rear ideally you need 80mm or more ground clearance on the sump any thing less you may have issues .
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nick-york
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| posted on 14/9/16 at 09:23 PM |
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I have 70 mm sump clearance and it's not quite enough. I drive slowly and carefully over speedhumps. on the small humps I go over them 2 wheels
up and two wheels down. never tried straddling them. I've grounded a few times. not badly with damage. just a few horrible scraping sounds.
there's a type of speedhump which is like a strip of concrete about 100 mm wide and I have to avoid them. luckily they only seem to appear on
privately owned roads or car parks. I've also grounded on drives where thereis a steep gradient meeting a flattish bit of road. I think 100 mm
would be safè.
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David Jenkins
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| posted on 15/9/16 at 06:23 AM |
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I have 100mm and I've only scraped the sump once, on a very high bump on a private road. It has cleared everything on public roads.
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907
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| posted on 15/9/16 at 07:03 AM |
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Am I the only one on LB to not poke their engine through the chassis ?
90mm front, 110mm rear.
I aimed for 100mm front but the car took me sooooo long to build that the suspension sunk. 
Paul G
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David Jenkins
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| posted on 15/9/16 at 07:49 AM |
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quote:
Originally posted by 907
Am I the only one on LB to not poke their engine through the chassis ?
It's those strange engines from Norfolk - all twisted up and odd-looking! 
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907
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| posted on 15/9/16 at 10:21 AM |
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quote:
Originally posted by David Jenkins
quote:
- all twisted up and odd-looking!
Are you referring to me, or the engine David ? 
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Mash
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| posted on 15/9/16 at 12:29 PM |
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I have 100 mm and live half a mile down a farm track/bridlepath.......
I have to drive VERY carefully to get to the road  Tend to collect gravel and stones each trip, and have to shovel them out afterwards, that eminds
me, must get around to a flat floor.
Seriously though, touch wood, I haven't hit anything on the public roads yet.......
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