Lotus Elan

Alternator Adjustment Strap - source?

PostPost by: mmatthej1 » Tue Apr 18, 2017 3:52 pm

The strap on my Sprint has broken and I would like to obtain a direct replacement - can anyone guide me to a supply source, please?

(see foto of broken item)

BTW, I have bought a strap from Paul Matty but it is quite different (with a 'fork' at the engine-end) and isn't at all suitable, as the 'fork' is way too wide. Other suppliers on the net illustrate the same item, unfortunately!
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PostPost by: pharriso » Tue Apr 18, 2017 4:16 pm

When you say that they are "way too wide" you do realise that they go over a reinforcing piece as well?
twincam_timingchestbracket.jpg and
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PostPost by: mmatthej1 » Tue Apr 18, 2017 10:24 pm

Oh, never seen the reinforcing piece before but still think the 'fork' is too wide - see foto:
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PostPost by: elanfan1 » Tue Apr 18, 2017 11:07 pm

There's also meant to be a captive washer brazed to one of the inside surfaces of the fork bit. The fork shaped part along with the elongated strengthener is definitely the correct part.
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PostPost by: mbell » Wed Apr 19, 2017 3:12 am

If my memory is right. It should be mounted to the middle bolt hole not the top. (You also need to rotate 180 degrees)

I believe there were some issues with your original type damaging the timing cover hence the addition strengthening plate and modified adjuster.
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PostPost by: dougal9887 » Wed Apr 19, 2017 7:03 am

It looks like the correct bracket and correct orientation to me. Her's a photo in case it helps.
20170224_174229.jpg and
Alternator.

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PostPost by: mmatthej1 » Wed Apr 19, 2017 9:12 am

Thanks to all - I will take the 'fork' bracket out to the car & try the suggestions shortly!

As far as the piccie is concerned (for which big thanks), I see that the strap is on the INSIDE of the alternator bracket, whereas my broken one sat on the outside - that must be just as good and opens up a different positioning for me to try!

WRT the strengthening strip, where would this fit in?
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PostPost by: mmatthej1 » Wed Apr 19, 2017 9:58 am

Hum - still struggling !

I've again offered up the fork strap to the engine - it HAS to fit to the bolthole arrowed on my picture, doesn't it?




...... but if that is the correct bolthole, I still see the big gap, as per second picture !




Am I missing something !?!
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PostPost by: normand » Wed Apr 19, 2017 10:10 am

Weld the original back together?
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PostPost by: pharriso » Wed Apr 19, 2017 11:06 am

Here's a picture of the OEM parts:
alternatormounting_workshopmanual.jpg and


Here's the bracket that I made for my lightweight Alternator in the same style:
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PostPost by: wotsisname » Wed Apr 19, 2017 1:04 pm

I found the above picture from the WS manual useful. this may also help you work out what you have....

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PostPost by: mmatthej1 » Wed Apr 19, 2017 1:28 pm

More thanks, for latest info/pictures - I now begin to understand where the reinforcing strap goes (It seems to be called a 'Mounting Strap'; I don't have one but will see if Paul Matty or someone else has one, as it looks helpful !)

It rather looks that my car had the 'simple' strap used when a dynamo is fitted, whereas the one used for an alternator is of the 'fork' type, per the other picture.

(seems a bit odd that a stronger strap is used for the lighter-in-weight alternator !)
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PostPost by: mmatthej1 » Wed Apr 19, 2017 1:29 pm

Ooops, here's the other piccie:
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PostPost by: collins_dan » Wed Apr 19, 2017 1:33 pm

Phil, The bracket you made is perfect. Any plans to make more? :D Dan
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PostPost by: pharriso » Wed Apr 19, 2017 3:33 pm

collins_dan wrote:Phil, The bracket you made is perfect. Any plans to make more? :D Dan


I have thought about it... any interest?
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