Steering, Suspension, & Brakes

tips, technology, tools and techniques related to non-driveline mechanical components

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ag1234
Arthur Gertz

(112 posts)

Registered:
03/29/2023 08:26PM

Main British Car:
Quarter- Eliptic, Composite, Mono Leaf Springs
Posted by: ag1234
Date: June 28, 2023 09:49PM

Front straight axle with about 400lbs, static corner weight. Urethane bushing at axle end, {compliance}. Spring is inverted for better rising-rate and ro[l-caster gain, as an upper, leading link. Question is, mounting diagonally, to handle lateral loads ? Not likely to exceed 1G lateral. Using metal lower leading link. Anti-roll bar may attach to ether link. Second design is "pickle fork", with roller bearing mounted on real side of axle,( slides up/down in slot). Thoughts ? Thanks, Art.


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(6496 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: Quarter- Eliptic, Composite, Mono Leaf Springs
Posted by: BlownMGB-V8
Date: June 29, 2023 08:23AM

KISS?


Moderator
Curtis Jacobson
Portland Oregon
(4588 posts)

Registered:
10/12/2007 02:16AM

Main British Car:
71 MGBGT, Buick 215

authors avatar
Re: Quarter- Eliptic, Composite, Mono Leaf Springs
Posted by: Moderator
Date: June 30, 2023 12:32PM

I think I need a sketch... and some context: What car would you put this under?
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ag1234
Arthur Gertz

(112 posts)

Registered:
03/29/2023 08:26PM

Main British Car:
Re: Quarter- Eliptic, Composite, Mono Leaf Springs
Posted by: ag1234
Date: July 02, 2023 12:08PM

First to JB., KISS, not helpful. Why bother ?
To Curtis, thanks for answering. No skill to upload sketch, but this is the Rover V16, all aluminum roadster, cept' f-glass body.
Entire drive train is stress-mounted which makes 1/8" wall aluminum frame, workable. Since aluminum engine girdle direct receives
. input load from quarted-eliptic monoleaf, loads are acceptable. About 1.5" squash and 2,5"dangle, travel , at wheel, should be
enough( straight axle).
Thanks, Art.


Roverbeam
Chad McNeely
N.E. MO
(78 posts)

Registered:
06/09/2021 06:03PM

Main British Car:
Alpine S4 Rover 4.0

Re: Quarter- Eliptic, Composite, Mono Leaf Springs
Posted by: Roverbeam
Date: July 03, 2023 08:38PM

Front straight axle and leaf springs sounds like pre-war stuff, or a truck. The guys that make “cyclekarts” (HF predator motor, Honda 90 bike tires, homemade chassis…) are big into the pre-war examples for their half-size “replicas”. The site is at least a decent repository of example cars/chassis/suspensions that aren’t difficult to copy.

I did a composite transverse 1/4 leaf design with lower A-arm for an Auto Union Type C I spent a week deciding whether to build…
CycleKart Plans & Drawings Thread (Page 11) CycleKart Tech Forum The Cyclekart Club.png


MGBV8
Carl Floyd
Kingsport, TN
(4554 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB Buick 215

authors avatar
Re: Quarter- Eliptic, Composite, Mono Leaf Springs
Posted by: MGBV8
Date: July 05, 2023 09:26AM

"Question is, mounting diagonally, to handle lateral loads ?"

Do you still plan to use a panhard rod, Art?

Straight axle street rod stuff is before my time. Maybe something in here may help:

[www.jalopyjournal.com]\


I enjoyed this little history lesson on straight axle street rods.

[www.motortrend.com]


ag1234
Arthur Gertz

(112 posts)

Registered:
03/29/2023 08:26PM

Main British Car:
Re: Quarter- Eliptic, Composite, Mono Leaf Springs
Posted by: ag1234
Date: July 06, 2023 01:40AM

Chad and Carl, Thanks. No panhard bar, Maybe pickle fork/roller bearing(tunable roll center).
Onward, Art.



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