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Anderzander's D1
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nickjaxe
Runcorn Cheshire UK
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September 18, 2016 - 8:40 pm
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I like that Steve...they your own words?

What was that Big BSA you mentioned to me to look for?

My Bantam video              https://www.you.....jpOFmzRZRI

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Anderzander
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September 18, 2016 - 8:57 pm
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nickjaxe said
I like that Steve...they your own words?

What was that Big BSA you mentioned to me to look for?  

I've paraphrased it from something I read years ago. I can't remember what it was originally - but I've used it for Land Rover's too !

The BSA I suggested you look at was the M20 and M21. I think you mentioned that you liked the plunger back end and the big seats - wanted a bigger bike that wasn't bonnevile money. They seem to fit the bill - nice looking old things, big singles so easy to ride and simple to work on, the M20 was used everywhere from the AA to the Army so there should be loads about ...

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Anderzander
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September 19, 2016 - 10:18 am
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Started 2nd kick this morning as if nothing had happened ...

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Mick W
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September 19, 2016 - 12:27 pm
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Good to hear.  Hope it got you to work on time and gets you back home again.

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September 19, 2016 - 5:50 pm
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Hi Stephen.

Thanks for your assistance with the Data I was after on the D3 project , and pleased you have sorted out yours.

Video would be nice to have a listen.thumbs-up

Bob.

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Anderzander
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September 26, 2016 - 4:43 pm
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Swapped the cylinder studs over today - they came out really nicely. I love how easy it is to work on the top end of these: tank off, top end off, fit new studs, re-time the ignition, and all built back up in just over an hour 😊

You can see where the head handn't sealed by the spark plug side with my old dodgy stud, which will have no doubt made it harder to start.

3B7C4619-2DA8-4F17-A0D6-0C92D7C45A06_1.jpg

I'd experimented with the timing a little on the recent rides - I had it at 2mm btdc to go to Rivington, then tried a ride with it set to 3.5mm - and then tried a spot in the centre, which worked well.

3.5 gave it more drive but it didn't feel as smooth at higher revs, which on a 150cc bike is where you spend most of your time. So I guessed where 2.8mm might be as a happy median.

This is the piston at 2.8mm btdc:

D34B8F95-0843-40F0-8441-1B8AD9F2DF1D_1.jpg

And here's where the timing mark was against the tap I use as a pointer:

EAA92ECC-E641-45A0-B63E-80B04DDCF5FD_1.jpg

Good guess !

Quite a bit of carbon in there - but I'm thinking that will have been exacerbated by the air leak.

I'm going to try and film a ride out and post it up.

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HowD1
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September 26, 2016 - 8:13 pm
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Excellent Stephen. Did the spacer work out?

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Anderzander
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September 26, 2016 - 9:36 pm
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Still waiting on those being made Rick. I'll report back when they are done. Probably good to test them in isolation too, rather than rolled up into the current tweaking.

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Anderzander
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October 7, 2016 - 4:29 pm
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After filling the bike with diesel - again!! doh....

** Please log in to view **

... it wouldn't run after draining it and cleaning the carb out, it would start if you tickled it but just for a moment - so I suspected an air leak given that the spark was good. 

Once stripped down the base gasket was soaked in diesel - it's amazing how that stuff penetrates. Anyhow - a new base gasket and a clean of the cylinder and head in the ultrasonic cleaner to get it all minty fresh and it's running again.

Lesson here is 'don't fill your Bantam with diesel (again).*

 

*In my defence I was half asleep and in a rush to ride to work.

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