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1936 model 18 engine sprocket

Submitted by stuart_hall on Friday, 7 March, 2025 - 20:32
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Hi I've just finished my 1936 model 18 and have done just over 100 miles of test runs. The bike feels a little over geared to me with the 21 tooth sprocket that came with it so I'm looking to change this to a smaller one. I believe the standard for this model would be 20 teeth but it's pretty hilly round here so I'm thinking maybe a 19 or even an 18 tooth would be OK. I'd be thankfull for any suggestions, thanks Stuart

Submitted by matthew_hickman on Thursday, 1 May, 2025 - 19:03

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Hi there.

im running a 20 T engine sprocket which seems perfect for all occasions but of course there is hilly and hilly:))

hopefully that helps fella

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Submitted by stuart_hall on Friday, 2 May, 2025 - 19:36

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Thanks Matthew,

    I opted for a 19 tooth and the bike rides nicely now and is fine up all the hills round here and is improving as the miles increase and the motor is settling down, thanks again for your input.

cheers Stuart

Hi Stuart.

Sorry for the delay, It's the late 37-38 .

I often thought about the oil modification, but I do check regularly and there seems to be no issues no oil leaks and very little where so I'm inclined to leave as is but thank you so much for posting the pictures of that!

Submitted by stuart_hall on Friday, 9 May, 2025 - 20:12

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Hi Matthew, I'm interested in the side stand you have on your bike, is it one that is available or have you made it yourself, it looks to be mounted onto the brake pedal stud at the top and the centre stand at the bottom. The position is much neater than the ones I've seen which mount to the front engine mount. thanks Stuart

Hi Stuart, I didn't actually do anything with the side stand, but the only thing I can do to help you is to take some pictures tomorrow and hopefully that will fit you in the right direction but it is a quite a neat fitment!

Submitted by stuart_hall on Friday, 9 May, 2025 - 20:51

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Hi Matthew, that would be a great help, thanks very much. I've been thinking about fitting a side stand for a while and your set up looks very neat and compact.
 

Submitted by matthew_hickman on Monday, 12 May, 2025 - 18:39

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Another Side stand picture.

Looking at the extension bar between top and bottom, it does not look filed or re-engineered at all so I wonder if it potentially is original

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Thanks a lot for the photos, they are all very useful and as I thought are using the mounting points for the rear brake pivot and the centre stand. My bike still has the centre stand fitted but this doesn't actually lift either wheel clear of the ground and is very awkward to use so I find it easier to just use the rear stand, the addition of a side stand will be a great help. I'll let you know how I get on with it, thanks again for the photos.

Submitted by Jon Newton on Monday, 5 May, 2025 - 18:40

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Looks to be pretty original. But tell us about the central oil feed to the rocker cover on the last photo?. Interesting mod. 

 

Hi Jon,  I've tried to keep it as original as I can, the bike is 1936 but had a 38 type top end on it and I think the larger pushrod tubes let quite a bit more oil up the rocker box so I used an extra breather valve on the rocker cover to let it breathe a bit better. The set up on the photo was a try out which worked well so I've now relocated the valve into the rear of the rocker box out of sight with the pipe run down to the gearbox sprocket along with the breather from the left side crankcase. It has made a big difference to oil leaks from the top end. I do have the correct barrel and head for the bike but don't have the earlier rocker assembly but may keep an eye open for it for the future. Also the toolbox is the later ES2 type, I have the original one but just prefer the look of the later one. Cheers Stuart

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Submitted by Jon Newton on Wednesday, 7 May, 2025 - 17:25

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Will keep it in mind.  Your bike sits well, enjoy it :-)
Jon

 



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