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06-17-2013, 08:58 PM | #1 |
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Location: Alton, NH
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Speedster Question, Spark Advance Linkage
Hey,
To you folks that have built a Speedster, a question. I am getting close to lowering my steering wheel. My Spark Advance Rod barely clears the head and Bolt now, when I lower the steering column, it will hit the head. Any solutions other then bending the rod? Thx. Quinn
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It's not what people think they know that will hurt them, it is what they think they know that aint so! -Mark Twain. It is the very things that we think we know, that keep us from learning what we should know.- Unknown |
06-17-2013, 10:29 PM | #2 |
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Re: Speedster Question, Spark Advance Linkage
Take two, "slice & dice", weld ...and now there is one longer one.
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06-17-2013, 11:04 PM | #3 |
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Re: Speedster Question, Spark Advance Linkage
Buy another rod, cut both of them. Thread them ( I believe a 10/32 die will work but dont remember for sure? Go to hardware store and get a long nut, like a turnbuckle nut. Cut the pieces to approximate length and join them with the long nut. Then you have an adjustment. I have left both my throttle and spark rods with the nut but they could be welded now that i have the correct length.
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06-18-2013, 01:36 AM | #4 |
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Re: Speedster Question, Spark Advance Linkage
But, how will lengthening the rod help with a straight line problem? He will still have to bend the rod to clear the head. A slight bend in the middle of the rod shouldn't require adding to the length. I think the Service Bulletins or Service Letters even mention a slight bend to clear the head.
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06-18-2013, 06:33 AM | #5 |
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Re: Speedster Question, Spark Advance Linkage
Thx for the replies, I can bend the rod, but to me it will look like a "bent rod". A nice sharp bend from welding two rods together would be OK.
I was looking for something a bit more "elegant". I sort of like things "square and perpendicular", or looking as if they were built for the job, not modified. It is probably foolish on a speedster, but that is the way I do things. Last night I was working on a potential solution of a Bellcrank to transfer the thrust around the head. Also played with the idea of using the tubing roller to bend a graceful radius along the full length of the rod. Just wondering what others have done.
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It's not what people think they know that will hurt them, it is what they think they know that aint so! -Mark Twain. It is the very things that we think we know, that keep us from learning what we should know.- Unknown |
06-18-2013, 07:24 AM | #6 |
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Re: Speedster Question, Spark Advance Linkage
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06-18-2013, 07:37 AM | #7 |
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Re: Speedster Question, Spark Advance Linkage
My steering wheel has been moved back 3" and I have a multi-piece spark linkage. Take a look at the picture.
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06-18-2013, 07:44 AM | #8 | ||
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Re: Speedster Question, Spark Advance Linkage
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06-18-2013, 07:59 AM | #9 |
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Re: Speedster Question, Spark Advance Linkage
Take two. Put a z bend in one of them, the parts suppliers sell a copper sleeve that will allow you to out two rods together. It's advertised as a sleeve to help you get the right adjustment out of your rods. I've used these sleeves multiple times when shortening and lengthening rods.
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06-18-2013, 08:04 AM | #10 |
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Re: Speedster Question, Spark Advance Linkage
OR you could install one of our Mallory conversions with full mechanical spark advance and forget the rod and linkage.
These are new Mallory cores machined for the Model A and advance is adjusted for 30 degrees at 2500 rpm. Shipped with new cap, rotor, ignition wires and drive rod ready to run....contact point version only......6 or 12 volt...... |
06-18-2013, 08:11 AM | #11 |
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Re: Speedster Question, Spark Advance Linkage
2 questions because I'm starting a speedster now. Why do you have to move the steering wheel back 3 inches? and doing that and drilling another huge hole in the frame around the same one, wouldn't that weaken the frame right around the area?
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06-18-2013, 08:23 AM | #12 |
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Re: Speedster Question, Spark Advance Linkage
Bognonj
Excellent question, and I will give you a detailed answer, but if you don't mind, I would like to start a new thread over at the Speedster Group. There is not nearly enough activity there, and this topic and subsequent thread might create some good dialog and interest among the Speedster enthusiasts. Why don't you sign up and join us there. http://www.fordbarn.com/forum/group.php?groupid=31 Quinn
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It's not what people think they know that will hurt them, it is what they think they know that aint so! -Mark Twain. It is the very things that we think we know, that keep us from learning what we should know.- Unknown |
06-18-2013, 08:48 AM | #13 |
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Re: Speedster Question, Spark Advance Linkage
How about building a longer control arm and swapping it out with the stock length unit at the bottom of the column? Wouldn't take much to weld up a control arm with a longer arm and solve any clearance issue. Using steel it would be stronger that the pot metal repop units, and you can then use the straight, unbent spark rod. You may have to "reclock" the control arm to make sure the rod will be long enough to reach.
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06-18-2013, 09:50 AM | #14 | ||||
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Re: Speedster Question, Spark Advance Linkage
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Another very good idea, thank you.
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It's not what people think they know that will hurt them, it is what they think they know that aint so! -Mark Twain. It is the very things that we think we know, that keep us from learning what we should know.- Unknown |
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06-18-2013, 10:57 AM | #15 | |
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Re: Speedster Question, Spark Advance Linkage
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06-18-2013, 11:13 AM | #16 |
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Re: Speedster Question, Spark Advance Linkage
Yup, me too, I am going to start to update a build thread of sorts there. It would be nice to have some activity there as Ryan was kind enough to grant the space, there are a few of us who are interested in that side of the hobby and I for one, could, pull my Speedster Body off of the frame and build a Stock Model A of my choosing, on on it any time I want, no Model A's are being harmed in the build. But I understand and respect the feelings of many other enthusiasts here.
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It's not what people think they know that will hurt them, it is what they think they know that aint so! -Mark Twain. It is the very things that we think we know, that keep us from learning what we should know.- Unknown |
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