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Author Topic: Lakester Front Suspension  (Read 2034 times)
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Skip Pipes
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« on: December 18, 2017, 09:03:12 PM »

Iím targeting building a 280/290 mph car and I know Sethís Hammond latest Lakester is usually stable at speed. Sethís car he has a unique front suspension that I like. Additionally DLRA363 has a similar front suspension, picture attached.  Iím sure there are many ways to get the job done but Iíd like to see if anyone can contribute pictures of successful designs.

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* DLRA363.jpg (195.86 KB, 800x450 - viewed 181 times.)
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« Reply #1 on: December 18, 2017, 10:02:19 PM »

Timely for me to Skip... I'm sure you don't need a pic of our VW based front end... I am also looking to do something different.... mostly because the crash destroyed the VW parts. 
I am watching for pics with ya....  cheers 
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Stainless
Red Hat 228.039, 2001, 65ci, MSA Bockscar Lakester with a little N20 
MSA Bockscar Lakester #1000 my fastest mile 245 and change, 84 ci turbobusa motor... but Corey's 233 MPH H/BFL record is still 3MPH faster than mine.
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« Reply #2 on: December 19, 2017, 10:15:45 AM »



I have a few pictures of different types of suspension here...

http://purplesagetradingpost.com/sumner/bvilleother/bville%20other%20index.html

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« Reply #3 on: December 19, 2017, 05:10:35 PM »

Skip.
I think that the suspension on the Aussie lakester is a great way to go. It keeps the suspension parts mostly out of the wind and also it would be fairly easy to add wing shaped fairing around the axle, steering and suspension, which if you are planning to go 290 will be important. I have attached a pic of the front suspension on my son and myself's small lakester. Our challenge was to get every thing inside the body, not completely successful, had to make a couple of blisters to cover one of the links, but Duke has a plan to fix that for this year. Our body dia is 25 inches but where the suspension is it is only 13 inch dia. at the front and 18 inch dia. where the shocks mount. We ended up with a lot of parts but it works pretty well.  You do need a strong front axle, ours is a 1.50 x .125 wall 4130 inter tube and a 1.75 x .125 wall outer tube, 4130 material. Our front wheel loads are pretty light at 200 lbs/wheel.

Looking forward to watching your lakester build, I know it will be interesting and inovative. You planning to run your roadster engine?


Rex


* Front suspension installed .jpg (124.12 KB, 800x600 - viewed 152 times.)

* Front suspension tacked in .jpg (285.96 KB, 1920x1094 - viewed 142 times.)
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« Reply #4 on: December 19, 2017, 07:44:32 PM »

I wonder if torsion bar suspension would be the ticket , i have an older silver crown sprint car with torsion and it is pretty nimble for the big alc injected small block 410 c.i.,
it is much better @IRP than the stallard chassis (traditional coil over type setup.) that usually wants to stand on the right rear after 5 or so laps.
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« Reply #5 on: December 20, 2017, 01:49:51 AM »

Sumner
Iíve spent many hours on your fine site combing technical inspiration.

Rex
Yep, using the Roadster Engine Combination.

strmir555
I know torsion bar cars as I spent 10 years wheeling dirt/pavement Midgets. Two home-built (parallel rear/cross torsion front, it was my design and a clone Bultler 4 coil) as well as an Edmunds lightweight dirt car.
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« Reply #6 on: December 22, 2017, 10:13:54 AM »

Don't be coy.  We're shooting for 300.  grin wink
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« Reply #7 on: December 22, 2017, 02:24:22 PM »

Skip,
As I remember you are planning to run a flat bottom car, much easier to fab, so if you run suspension you will need to make sure that you run some good bump rubbers to keep the car off of the ground. I would think that you would want the front suspension stiffer than the rear and the rear should be somewhat soft to provide lots of compliance and traction. The good part of a flat bottom car is the ability to have some pretty good ground effects for down force. Some rake on the chassis, and a diffuser at the rear should provide some great down force without the drag penalty of wings. I know you are thinking about all of this in your design. With they hp of your engine combo 300 should be attainable but you will really need to pay attention to the aero.

Rex
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« Reply #8 on: December 24, 2017, 01:33:20 PM »

Hi Rex

Well you know me I canít help myself. The design has advanced to try and get as much aero as feasible. Parts and tubing have arrived, so watch for a build thread.

For the front, Iíve noodle over every form of torsion bar suspension and canít seem to get it compatible with the axle fairing. Therefore Iím just going to focus on the Seth Hammond concept and try to design a tuneable version.

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« Reply #9 on: December 24, 2017, 04:17:21 PM »

Skip,
Both you and Nathan are pretty stout guys, are you considering a "slimmer" driver, cuts down on the frontal area.

I would bet that my boy, Duke, would drive it, he gets in our little lakester pretty easy. He will have his 200 mph license next year, and maybe a record. (we hope!)

Rex
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« Reply #10 on: December 24, 2017, 09:39:24 PM »

REX what are you thinking  grin
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« Reply #11 on: December 25, 2017, 11:43:16 AM »

Rex,
Thatís ballast to get the CP behind the CG.  grin
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« Reply #12 on: December 25, 2017, 12:33:27 PM »

Skip do you have a picture of Seth's frt. susp.?
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« Reply #13 on: December 25, 2017, 12:57:53 PM »

Skip said: "Thatís ballast to get the CP behind the CG" That is great! Always thinking!!!

Rex
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« Reply #14 on: December 25, 2017, 01:48:30 PM »

Sparky
Itís a photo from Hot Rod Magazine. I'll try and post it.
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* Seth Hammond Front.jpg (69.59 KB, 640x480 - viewed 104 times.)
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