Author Topic: LR1 intake and exhaust backwards  (Read 857 times)

Willw

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Re: LR1 intake and exhaust backwards
« Reply #15 on: April 12, 2020, 03:42:09 AM »
Congratulations Dmatt! Much better now. Starting it in the designed direction makes quite a difference doesn't it?
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cobbadog

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Re: LR1 intake and exhaust backwards
« Reply #16 on: April 12, 2020, 06:48:36 AM »
Now it is starting up in the correct rotation, something to help you is to also use the decompression lever to get the rpm up a bit first then dump it. This saves a big load on the starter.
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sirpedrosa

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Re: LR1 intake and exhaust backwards
« Reply #17 on: April 12, 2020, 11:11:55 AM »
Hi Gentles

One way to observe the direction of rotation of an air-cooled engine is to looking to the blow tunnel. If the blower is on the left hand it will be clockwise, else if blows by right it will be reverse. There may be exceptions!

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listard-jp2

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Re: LR1 intake and exhaust backwards
« Reply #18 on: April 15, 2020, 09:00:00 PM »
Congratulations Dmatt! Much better now. Starting it in the designed direction makes quite a difference doesn't it?

It should also eliminate the leaking oil seal behind the flywheel, as this seal is a scroll type.

Dmatt

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Re: LR1 intake and exhaust backwards
« Reply #19 on: April 17, 2020, 02:03:55 AM »
Yes it did. Thank you. Also is it possible to make this variable speed?

listard-jp2

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Re: LR1 intake and exhaust backwards
« Reply #20 on: April 17, 2020, 10:39:50 AM »
/\ That is possible.

However you will need a considerable number of small parts to make the engine truly variable speed, the easiest option is usually to find a scrap engine with these parts already present on it, but even after this you may still have to buy another set of governor springs, as there is a multitude of choices depending upon what speed range you want the engine to run.

Sleeman and Hawken in the UK will have these items, but they will not be cheap.

A first step would be to located an instruction manual for your engine, so you can see what this involves.

Also bear in mind, although your engine is fixed speed, it is possible to adjust the engine speed +/- 5% by adjusting the tension on the governor spring (the adjusting screw is on the top of the timing cover, just underneath the fuel tank, screw out to increase / screw into to reduce engine speed)

Dmatt

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Re: LR1 intake and exhaust backwards
« Reply #21 on: April 17, 2020, 03:28:29 PM »
Good information.  Thank you