[charlie]

Finding tyres for our type of machines can be difficult.

[charlie]

It can be a fiddle finding neutral between each gear, in my opinion the gear lever should be longer making it easier to reach.

[charlie]

Per, I have checked in the factory records which I am custodian of for the VHGMC and can confirm your machine was made by Geo Monro. It is one of 20, serial numbers 560757 to 560776, exported to Sweden on 24-3-1950. Sent to Wilhelmson, this could be a spelling mistake as other entries show Vilhelmson etc see below. Other entries in the records show the following also going to Sweden,
560501 to 560512 on 8-11-49 Villelsson.
560543 to 560555 on 9-12-49 Villelmson.
560577 to 560581 on 23-1-50 Villelmson.
560592 to 560641 on 23-1-50 to 30-1-50 several batches going to different locations, Stockholm, Malmo, Gothenberg.
560672 to 560741 on 21-2-50 and 24-3-50, two batches.
560807 to 560871 on 20-4-50 to 22-6-50, three batches.
560882 to 560916 on 16-5-50 to 22-6-50 several batches.
560949 to 560958 on 7-7-50
A total of 285 machines.
The serial number plate appears to be one fitted by dealer in Sweden. I have not seen a spark plug cover with only SIMAR on it.

[charlie]

The Trusty Earthquake had two engine options, the Villiers MK25 (3hp at 2500rpm) or the 4/44 (7hp at 3000 rpm). Will need to drag my Mk25 powered machine out of the shed to count teeth on sprocket.
trusty220 may know the answer.

[charlie]

I will be there. Arriving Friday, with marquee, BBQ, etc.

[charlie]

The rotor box has seen very little use by the look of it as the ‘feet’ on the bottom of the side covers seem to have no wear.

[charlie]

Looks good, should get plenty of interest at shows, a very unusual exhibit.

[charlie]

Note, the photos show a series 2 gearbox, basically the same as a series 3 but with one less gear ratio, only two speed not three. The reverse gear is mounted on the outside of the gearbox on l/h side on a series 3.

[charlie]

I think I can see what the problem is. The bearing MT90 on the end of the input shaft MT18 is probably stuck (rusted) in the clutch drive plate which is attached to the gearbox.Photo shows the bearing I refer to. The only way I can see to separate the engine from the gearbox will be to gently lever the engine off the gearbox, this should either extract bearing from drive plate or pull bearing of end of shaft. Wooden wedges driven between engine and gearbox on both sides to ensure engine comes off square to gearbox. Before starting it will be well worth supporting engine and gearbox on wooden blocks so neither can tip when engine comes off.
I have taken a series of photos showing how to split the gearbox, let me know if you want them.
Below left to right, general view of gearbox internals, clutch and bearing which is probable cause of engine sticking.

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[charlie]

Removal of the bronze worm wheel is not easy and not something I would recommend, it is something you do not want to damage and yours appears to be in good condition. I will be having a rumage in the shed today and will see if I can find an engine gearbox and clutch to see if I can work out what is stopping your engine coming off.

[charlie]

Dave, that is the boot of the Volvo.

[charlie]

Peter, have you tried contact Bob Maries, he runs the Garner register.

[charlie]

Funny you should say that John, there is room in the garden.

[charlie]

Apart from the four nuts the only other thing to remove from the engine is the throttle cable, it should then just pull off. The only thing I can think that is holding the engine is the clutch. On the engine is mounted a metal disc with 3 fingers, these engage with the clutch disc MT23. The clutch disc is held by spring pressure between MT21 and MT22. I will get some photographs at the weekend so you can see what it looks like when apart.

[charlie]

Joe,
the bronze gear is that shape so it meshes with the work on the main shaft. It does not look too bad, I have seen them with sharp edges to the teeth caused by excessive wear. It might be worth giving the gearbox a good wash out with degreaser and a power washer. The engine is held on by 4 bolts/studs. I think I need to have a dig around in the shed and find some Monro bits to photograph to give you an idea of what it should look like and how it should come apart.

[Author]

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