Author Topic: Southerly and South West; Builders meeting  (Read 457 times)

Seven racer

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Re: Southerly and South West; Builders meeting
« Reply #15 on: 30 Sep 21, 04:40 pm »
It's only plywood mock up stuff at the moment  Adrian, to see if

a. I can fit in it, and
b. That I can fit the motor in.

So far so good, it's very tight,  which is why I wanted to get to another meet to check some things out, but it's certainly possible with maybe an inch or two stretch on the body width.

I went with the electric start as it seemed a good idea, but it does push the motor position back a couple of inches, not helpful in a tapering tail. The upside is that a battery at the front might help keep the front wheels going in vaguely the right direction.

As for the reverse gearbox, that's when 'keep it simple and add lightness' went out the window, I'm playing with it as an aid to reducing gear wheel sizes, as it reduces 1:1.3 in itself, but the fact that the output shaft is inboard of the input is causing a lot of head scratching, and possibly the introduction of a layshaft, so the jury's out on it at the moment on whether it makes an appearance.

Once I have all my ducks in a row there will be plenty of build videos, there's already a couple of hours done and I haven't actually built anything yet!

Being a Youtuber it will be fully covered, but I don't want to start releasing stuff until I actually have something worthwhile to show, I'd rather under promise and over deliver.  Chassis construction should start in the next couple of weeks, and will be aluminium, so a bit different maybe, and having been at the Morgan works yesterday, ash might be making an appearance.

Peter

Chris L

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Re: Southerly and South West; Builders meeting
« Reply #16 on: 30 Sep 21, 07:45 pm »
Great start Peter. Like it !
have you worked out a transverse leaf spring system on the front , if going that route.

Chris L

Seven racer

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Re: Southerly and South West; Builders meeting
« Reply #17 on: 30 Sep 21, 10:07 pm »
Thanks to a certain antipodean gentleman who may be known to this site I have the requisite spring, I'm just working on the designs for the attachments to a straight tube front axle, and the associated lumps at the ends that should mate up to standard Gemini steering arm/stub axles.

I'm trying to build in the ability to give a bit of castor and camber adjustment into the axle, it will start out with about 8° of castor and no camber, but designing in the ability to play with it later might save a bit of reworking later on should I want to change anything. The original round tube axle with a flange on each end is a great starting point to copy.

Peter

Chris L

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Re: Southerly and South West; Builders meeting
« Reply #18 on: 01 Oct 21, 10:34 pm »
Thanks to a certain antipodean gentleman who may be known to this site I have the requisite spring, I'm just working on the designs for the attachments to a straight tube front axle, and the associated lumps at the ends that should mate up to standard Gemini steering arm/stub axles.

I'm trying to build in the ability to give a bit of castor and camber adjustment into the axle, it will start out with about 8° of castor and no camber, but designing in the ability to play with it later might save a bit of reworking later on should I want to change anything. The original round tube axle with a flange on each end is a great starting point to copy.

Did that certain Gentleman mention where the spring came from, still available ?

Seven racer

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Re: Southerly and South West; Builders meeting
« Reply #19 on: 02 Oct 21, 11:00 am »
Unfortunately it was a one off, I think.

It's obviously been used on something like a golf buggy, but apart from being a little bit short it's ideal, as the  spring eyes are on the top side of the spring.
It just means I have to sort spring hangers on the beam, rather than the swivel mounts at the ends.

There are also some nifty grease nipples in the bushes  that I could do with replacing, but the bushes are good, and it just needs a bit of cleaning up. 
The other advantage is that I can adjust spring rate by taking leaves out as required.

Peter