Tag Archives: Elden MK10C

For Sale Elden MK10C FF AM 73-79

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1973 Elden MK10C Racing At High Plains Raceway 8/1/2021

1973 Elden MK10 C Formula Ford, Chassis # AM 73-79        $22k OBO

Complete log books since new.  

Complete restoration 2019, include:

1) new lightweight body from Marchant Cox 2018, $1500

2) Total Precision Engine built in 2016, head rebuilt 2019.  All receipts and Dyno sheets available

3) New Ron Davis aluminum side radiators

4) Harmon Fuel cell built 2017, unused until 2019

5) Spax single adjustable shocks

6) New billet steel Imp rear stub axles from PA Motorsports 2021. This was a $800 upgrade

7) Frame was checked and Aluminum floor added.  

8) Many new rod ends, 

9) New gauges.  

10) Belts expire 2022

Complete setup sheets, 2 year old Hoosier VFF tires, Performance Friction Brakes, 

Spares are MK10C nose and old nose buck, used rear engine cover and carb snorkel, original brass radiators, one spare set of Weller wheels, 2 set of gears; short track and long track.  

Car was raced this past Aug 1 at High Plains Raceway and is ready to go again.

Reason for selling?  I have 3 more Eldens and need to reduce the collection.  I have done allot of research on Elden’s in the US and have developed contacts in the UK and US to support the restoration.  A registry of Elden’s in the US is on my web site:

https://lchrestoration.files.wordpress.com/2018/07/new-elden-register-by-me-version-1-version-1.pdf

Willing to help with transport for expenses up to 1000 miles.  

Ask all you questions. If there is a specific photo you require, advise.

Thanks for looking.

Feb 2018 Update

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Morning to all,

Thought I would take a few minutes to catch up where we are in the winter work on the Elden’s,

Elden #1,  AM 74-5,  is on the alignment rack, home made, to confirm last years setting and upgrade my measurement capabilities.  Below is a picture of my alignment setup.  My garage floor is not even close to flat, 3/4″ slope in 8′ in places.  So I took my Scale pads and built a pad holders with a roll off area behind the scale pad.

Shop alignment setupI also built my own hub stands to get the wheel assembly out of the way and allow a much more accurate surface to measure off of.

IMG_0948

I also broke down and bought some Suspension Geometry Software to help me understand the Elden suspension design.  I have chased under-steer all of my time  with this car.  Some of the issue is my driving style and maybe the shocks are not in the correct range. (shocks were valved for a higher spring rate than we are using now).

After conversing with MK8 Motorsports in UK, https://www.mk8motorsport.com/, I have begun to follow their guidance on setup.  This required a softer spring package than I was using and maybe the pickup points on the lower a-arms was incorrect.  So with the software I hope to get some Roll Center numbers, camber change  etc.

The hard part of the suspension geometry software is accurately is inputting 3-D coordinates for all the pickup points.  So working on tools to aid in those measurements.

 

Elden #2, AM 73-39, was found to a have a severely bent frame. That frame in is Colorado Springs with Tom B. to straighten.  Hope to have back in late February.  Then we will start over building it with all clean, polished etc parts. This will take most of 2018.

Elden #3, AM 73-79, has its new side radiators from Ron Davis Radiators in Phoenix, AZ.  It was a big challenged to plumb the radiator cross over piping and trying to ensure the driver is safe.  The radiator shrouds were from this car many years ago and were a challenge to fit.  Also with the cross over piping in the drivers compartment, the body parts and suspension are a bit more trouble to deal with than the front radiator cars.  So allot of planning and cussing takes place to fit everything.  I believe we are complete.

Next with Elden #3 is to  fit the front suspension, order shocks, etc.  The end maybe in sight!

Elden #4, AM 73-74, waits in the trailer for its time in the shop.  Unfortunately we have borrowed a few parts to further the other sisters completion.  One of the things we have had trouble with is front uprights.  In talking with MK8 Motorsports, they are now building Elden parts and have listings on their web site; https://www.mk8motorsport.com/elden-parts

I have sent them 3 damaged front uprights from my spares and they will attempt to repair or build new.  Give them a shout.

Will update the suspension work later.

Enjoy the Super Bowl Sunday!

Elden Formula Ford MK10 Chassis Drawings

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I want to share a set of drawings I received from John S.  John sent me  the MK10 chassis drawing, Lower A-Arms for Front and Rear Suspension and the Rear Hub casting.  Thank You John, for sharing these valuable pieces of information.

PS:  Elden spare suspension parts are available from MK Motorsports in the UK: https://www.mk8motorsport.com/

and GMT in the USA: http://www.gmtracing.com/

Note: GMT acquired the jigs for the Elden from Pat Price Engineering.

Note:  Just got this from Peter Hampsheir.

Larry,

The differences between the mk8 are minimal.

After 1981 the weight minimum was increased by 50 Kg to allow for mandatory for extinguisher. The Mk8 was already under weight and so I decided to put the exrta in the chassis for strength. The main members were increased from 1″ sq to 1 1/8″.

SCCA roll bar regs increased to 1 1/2″ dia. Rear radius rod mounts went to clevis mounting and the engine Y frame was made detachable. The rear cross-member was raised to permit inboard brakes.

The original  MK 8 chassis drawing was left on train and was superseded by the Mk 10 drawing 10C1 in Jan 74. This was the last mk10 chassis drawing.

Regards, Peter.

 

Elden FF Chasis Drawing

Elden Formula Ford MK10 Chassis

Elden FF front Suspension A Arm drawing

Elden Formula Ford MK10 Lower Front A-Arm

Elden FF Rear Suspension A Arm drawing

Elden Formula Ford Lower Rear A-Arm

Elden FF Rear Hub A Arm drawing

Elden Formula Ford Rear Hub

Elden MK 7 8 9 10 11 Rear bulkhead

Elden MK 7 8 9 10 11 Rear bulkhead

 

Update May 2017

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Well it has been a bit of time since I have updated this blog.  Since Oct last years we did our normal traveling in the fall and then spent most of the winter working on Elden AM74-5 and 73-39 and Am73-79

Elden 74-5 was found to have mismatched front uprights.  One was 1/2 ” taller offsetting the hub center line.  Borrowed 2 different ones from our last acquisition and began a search for new replacements.  Was introduced to 2 potential suppliers in the UK. One private individual and another a race shop:

https://www.mk8motorsport.com/

I also spoke to Pat Prince at Pat Prince  Engineering and he has the jigs for the suspension parts.  So soon I will be sending the stuff I need to Pat for repair or fabrication.

We are now running the new Hoosier VFF treaded tires a bit difference that the slicks I have run for years.  But we are nearing an optimum setup.

Elden #2 was nearing completion for this racing season.  Note I am doing preservation not restorations so I don’t strip down the car. When I picked up the car there was an invoice to “straighten the frame”.  Well it is still “bent”.  I couldn’t align the car, ran strings down the chassis found the rear sub frame tweaked 1/2″ at least.  So work has stopped.

Elden #3 AM-73-79 is getting a new body.  The old body had been cutup and missing some parts so I ordered a new body from:

http://www.marchantandcox.co.uk/m-and-c-moulds

New body

Hoping that body is here in June.  So the plan right now is to strip the bent chassis down for repair and to move forward on Elden AM 73-79.

Racing highlights:  We ran ran Elden 74-5 the MK10C rebodied Falconer and the video link is:

Well we will catch up again after the SVRA Open Wheel World Challenge at Indianapolis,  in June.

 

The History of the Falconer Rebody

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It has always been a question of mine on the true validity of the Falconer body on my Elden MK10C.  The previous owner had the car re bodied but the top cockpit is different from the original Falconer design. The reason was under Lee Stohr’s ownership he converted the car from an outboard suspension to front inboard with rockers and modifications were needed in the cockpit body panel to clear the rockers.

A few days ago Allan D. helped me inventory the spare body panels I have accumulated over the several acquisitions.  When I bought the 74 MK10C from South Carolina it came with Lee Stohr’s original body.  I have toyed with the idea of putting that body back on so Allan D. and I setup the panels and low and behold this is what we found.  The following pictures show what transpired:

picture 1

 

The first picture shows the Swift type nose cone Lee Stohr used and the cockpit, but with something missing.  Also note the rear engine cover very similar in design as the Falconer.

Falconer original vs as now

If you notice the original Elden Falconer Body work, copied from a picture on Race-Cars.com, there is a bubble in front of the cockpit opening, assume to deflect air over the drivers head.  By using Lee Stohrs middle section incorporating the inboard rockers the Falconer bump was eliminated.  I will say I wish I had the bubble as the wall of air off the nose is very annoying at 100 mph, trying to lift my helmet off!

So the mold I have is the final product of the current Falconer body style.  What is great I now understand the evolution of this cockpit body panel and the rest is original Falconer.

Fianl Falconer mold

Thanks to Lee Stohr for the picture of his car in 1980, and Race-Cars.com for their tremendous archive.

 

Body Panels for Elden MK10B AM73-79

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Elden MK10 B AM73-79 as raced by Jay Davis.  I wish to re body this car with the parts I already have.  Thanks to Jay for this and other pictures of the car during the time he had it.

As Raced Jay davis.jpg

On this car I got from Tim H. in Tulsa,  there were some panels that were saved from the days of Jay Davis.  Note the two holes at the back of the side body panels for radiator plumbing, as this is the remnants of conversion of this car from a MK10B to MK10C , You can see the front radiator hose openings have been glassed over from when the car was a MK10B configuration.

This picture shows the top cockpit using an Elden cockpit body panel with a nose grafted on.  Along side are the side body panels after much modification.

Elden #3 body parts.JPG

Since I want to take this car back to a Elden MK10B with the radiators behind the front wheels as is AM73-74, this next picture shows what I have to work with from my inventory:

Potential MK 10 C body panels

So it looks like I need side body panels and a nose.  I am thinking of trying to pull a mold off the last Elden MK10B AM73-74 side body panels I just got from Greg N.  He also had the wood “buck” to make a nose mold and may try to use it to make a female mold, but will have to see my fiberglass skills on the side panels.

Elden MK10 Falconner Progress

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It was a busy off season.  Curtis Farley at Farley Engines built a new motor.  Scat crank and light weight flywheel/clutch etc.  I went thought the Hewland and confirmed all bushings etc where in good shape.

First event was April at Sandia Motorsports in Albuquerque, NM running a Southwest Motorsports (www.SWMS.org) vintage race.  I was not happy:  1) brakes have always been an issue.  With the new locking axle nuts on the Imp axles to eliminate loosening of the nut during braking.  John Hammill at http://www.hamfab.com fabricated the nuts and washers.  But the stopping ability is still poor.  I used old Ferrado DS11 pads as I had some and with the rear disk rotors being unobtanium didn’t want to get real aggressive.  I soloed the the DS11 a long time ago. Well let’s move on.

The rear external disk rotors are Sunbeam Rapier, per Peter Hampsheir.  I have scoured the internet trying to find a backup pair.  Contacted the Sunbeam Rapier UK club and found a pair of used.  I have cleaned them up and bored the bolt circles to match the car and have taken them to Santa Fe Auto Machine to have them faced.

So with a backup rotors I put some old Millitex pads on.  They work a 100% better than the DS11, but…..  Will look for some Hawks or Performance Friction Carbon pads.

One thing became more apparent that without adequate rear brakes the under steer is worse.  Going to add brake bias adjuster to help find that happy a balance.

Second race of the year at SWMS I found the engine running warmer than I wished.  70 deg day overcast and water temp 105deg C and rising.  Backed  off RPMs and the issue subsided.  So decide to have the radiators looked at.  The “mule” engine was an unknown and now the Farley engine is known hp.  That added hp maybe a bit much for 6000 ft and dry air,  so having the radiators checked.

Another issue found at the last race was  very “vague” shifter.  2nd gear was tough to get into and 4th was there maybe.  Found that in my search for removing slop in the shift assembly, I actually introduced some drag into the pivot at the front of the shift handle.   Redid the assembly and the next race much better.

So we are getting there.

 

 

 

Period Pictures of the Newest Elden

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Thanks to Jay Davis, the second owner of the Elden MK10C I am posting some of his pictures he was gracious enough to share.  I was most interested in radiator location and attachment points for the same.

One of the question Jay answered for me was if the car came with an original Piper engine.  In the pictures there is a Piper cast aluminum oil sump, Piper oil pump, Piper velocity stack and Piper valve cover.  I have all but the Piper valve cover which Jay says he still has.  Also Jay says that the original block had some weird gob of weld/epoxy covering block damage.  The block I have from the car has two areasImageImage that have repairs from internal shrapnel. Also the cast oil sump shows the same.  So I believe I have the original engine in the car and plan on using it.