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Half leaf on rear springs?
#1
A search did not find anything on this, so I know somewhere I read that a way to stop a rear axle from jumping or hopping with an open rear diff, is to use a half leaf between the mount plate and the front bushing. I am sending my car to a local spring repair shop/specialist for new bushings and referb the springs in general and would like to do this mod. Problem is the person, although well experienced with classic car springs is unsure what I mean. He generally adds a full leaf, but I don't want to make the ride any harder than it is.
So, does anybody have any info on this, pictures, links to websites etc.?
No need for a long discussion if someone can point me in the right direction.
Thanks in advance,
Geoff.
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#2
(06-27-2017, 01:56 PM)Stanglover Wrote: A search did not find anything on this, so I know somewhere I read that a way to stop a rear axle from jumping or hopping with an open rear diff, is to use a half leaf between the mount plate and the front bushing. I am sending my car to a local spring repair shop/specialist for new bushings and referb the springs in general and would like to do this mod. Problem is the person, although well experienced with classic car springs is unsure what I mean. He generally adds a full leaf, but I don't want to make the ride any harder than it is.
So, does anybody have any info on this, pictures, links to websites etc.?
No need for a long discussion if someone can point me in the right direction.
Thanks in advance,
Geoff.

Here is a link to a picture that shows the half leaf as well as the HD clamps. https://www.cachassisworks.com/p-1850-mu...g-set.aspx
A pinion snubber (some fabrication required) and good 50/50 shocks will helps well. A solid front spring eye will also help. Chuck
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#3
(06-27-2017, 03:44 PM)c9zx Wrote:
(06-27-2017, 01:56 PM)Stanglover Wrote: A search did not find anything on this, so I know somewhere I read that a way to stop a rear axle from jumping or hopping with an open rear diff, is to use a half leaf between the mount plate and the front bushing. I am sending my car to a local spring repair shop/specialist for new bushings and referb the springs in general and would like to do this mod. Problem is the person, although well experienced with classic car springs is unsure what I mean. He generally adds a full leaf, but I don't want to make the ride any harder than it is.
So, does anybody have any info on this, pictures, links to websites etc.?
No need for a long discussion if someone can point me in the right direction.
Thanks in advance,
Geoff.

Here is a link to a picture that shows the half leaf as well as the HD clamps. https://www.cachassisworks.com/p-1850-mu...g-set.aspx
A pinion snubber (some fabrication required) and good 50/50 shocks will helps well. A solid front spring eye will also help. Chuck

 Awesome help, thanks Chuck. Looking at the picture enlarged, I see now how it works to stop the eye end of the spring from flexing. It's only 1 leaf at that point.
I'll post the results after I talk to Charlie tomorrow.
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#4
That was an old drag racers trick. Use to take a main leaf and cut the curl off the end and only add the front part from the back of the mounting plate on the axle forward. I would make my clamps out of 1/2" thick X 1 1/2" CRS and put a 5/16" bolt thru on each side and clamp the springs so that they can not fan out. It does work. I used that back in the 60's.


When a man is in the woods and talks and no women are there is he still wrong??
Tongue
David
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#5
(06-27-2017, 06:32 PM)Carolina_Mountain_Mustangs Wrote: That was an old drag racers trick. Use to take a main leaf and cut the curl off the end and only add the front part from the back of the mounting plate on the axle forward. I would make my clamps out of 1/2" thick X 1 1/2" CRS and put a 5/16" bolt thru on each side and clamp the springs so that they can not fan out. It does work. I used that back in the 60's.

Thanks also David. I'll be passing all this on to Charlie. (yes, that is his name!!)
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#6
I have 4 1/2 leafs on my car. Stock ride height, standard eye. Bought them from Mustangs Plus over 18 years ago. It was fine when the car was an automatic, but after I swapped in the Toploader I had tons of wheel hop. My car has a Auburn Pro differential and not an open diff. I cured it with some old school traction bars. I always wanted to go with some Calvert style bars but I cant even really notice them and they work good, so I have not had the drive to spend more money on it.

http://www.mustangsplus.com/1965-1973-Mu...rak-R.html

Mike
__________________________________
Black 1985 GT
Yellow 1973 Mustang Mach 1
Black 2012 5.0 GT, 6-speed, Brembo brakes, 3.73's
Wimbledon White 1966 F-100 Shortbed Styleside, 390ci, Tremec 3550, FiTech EFI
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#7
(06-28-2017, 11:24 PM)MeZapU Wrote: I have 4 1/2 leafs on my car.  Stock ride height, standard eye.  Bought them from Mustangs Plus over 18 years ago.  It was fine when the car was an automatic, but after I swapped in the Toploader I had tons of wheel hop.  My car has a Auburn Pro differential and not an open diff.  I cured it with some old school traction bars.  I always wanted to go with some Calvert style bars but I cant even really notice them and they work good, so I have not had the drive to spend more money on it.

http://www.mustangsplus.com/1965-1973-Mu...rak-R.html

 Thanks Mike, good reply. They are a bit cheaper than Chassisworks. Theirs is listed as Total Control Products. Wondering if they are the same deal? My local guy decided he did not want to do them, citing liability reasons IF the clamps should let go and do damage, so it looks like I'll have to buy in the US and pay the exchange rate of nearly 40%. I do not want to go with any sort of traction bars on this car, so I'm stuck with spring upgrades and I don't really want to go to 5 leaf either. Decisions decisions!
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#8
I posted the Chassis Works picture only to illustrate what 4 1/2 spring looks like. He is afraid of liability from adding a half leaf??? Tort laws have ruined the western world. I hope you get the hop to stop. Chuck
  Reply
#9
(06-30-2017, 01:09 PM)c9zx Wrote: I posted the Chassis Works picture only to illustrate what 4 1/2 spring looks like. He is afraid of liability from adding a half leaf??? Tort laws have ruined the western world. I hope you get the hop to stop. Chuck

 Yes I agree Chuck. I really don't know what his issue was on doing a relatively easy job. Well, he just lost 400 Canadian bucks! I ordered a set of Grabber-Track 4 1/2 leaf, standard eye from Mustangs Plus, shipped for free to Michigan yesterday and they are already on the way.
What they don't advertise is the spring rate in lbs. The Total Control ones are 180lbs but only come in mid-eye or reversed-eye. Stock spring rate on a Mach 1 is 138lbs, so I'm hoping that the extra won't make for too hard a ride while improving handling, assuming they are the same.
Thanks to all for your help. I'll update this when I get them in later in July.
Geoff.
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#10
Just picked up my new Grabber-Trak springs on Friday, hoping to put them in today, Sunday. From the video on Mustangs Plus', website, it look to be an easy job and as I have no rusted nuts and bolts, it will likely take longer to get the car jacked up.
More later.
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