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SpacedMarine's D14
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SpacedMarine
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July 8, 2019 - 8:53 pm
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After the run to rivington yesterday I've had a little go at a couple of things tonight after work.The clutch seemed to be a bit "slippy" so have adjusted the mechanism in the side case and seems to be a lot better.

It wasn't very happy idling and on a steady/closed throttle it was spluttering a bit.Anyhow I got the timing light out and it was way too advanced I'm talking about 20 degrees so I've taken a chunk out and it seems to be a bit happier.Before the rebuild i was using "naughty" fuel.100 octane with a bit of paint thinner so no wonder it liked the advance.Im now running the cheap stuff so that's almost certainly the reason.Im gonna take a bit more out I think and see how it goes.I can honestly say though hand on heart it felt a lot quicker with the "race fuel" I was also running without a head gasket so it had higher compression aswell.Not that it was rapid  ut compared to current trim it was noticeably faster!

What's 7/16 in mm again?

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nickjaxe
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July 8, 2019 - 9:35 pm
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Sounds good James.

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

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SpacedMarine
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July 8, 2019 - 9:50 pm
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Yeah.I was thinking about what you were saying about the pilot circuit and I'll have a look if taking a couple of degrees more out doesn't cure it.

What's 7/16 in mm again?

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nickjaxe
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July 8, 2019 - 10:36 pm
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All I found if over advanced...just run knocky or harsh.

Strimmer line is what I used...the stiffer stuff with carb cleaner spray...with the tube you can spray down the drilling.

Let me know if you fancy a local ride out...maybe Barton or Ince.

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

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Mannanan
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July 9, 2019 - 8:00 am
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Nick, that pilot jet is just 16 thou, how are you clearing it with strimmer line? Maybe I am missing the point.

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nickjaxe
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July 9, 2019 - 9:18 am
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Hmmm quite some time ago I last cleared mine...I must have got that wrong...maybe I used fuse wire...that's quite flexible...I have plenty about as we have old style fuses here.

Wonder if it was fishing line I used...I have loads of that as well in different thicknesses.

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

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SpacedMarine
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July 9, 2019 - 9:47 am
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Guess I could just dump some paint thinner in that'll clear it 😂😂😂

Get me to 56 mph instead of 55 !

What's 7/16 in mm again?

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Piquet
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July 9, 2019 - 11:59 pm
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I think Nick has a 626/302 which is a generic 26mm 2-stroke carb and as such has a pilot jet and no bush so it's quite possible he could have removed the pilot jet and cleared out the galleries (which can easily get 'furred up' when the fuel evaporates) with some strimmer line.

I'm not a complete idiot ............................................ some parts are missing.

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mike p5xbx
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July 10, 2019 - 12:27 am
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nickjaxe said
Hmmm quite some time ago I last cleared mine...I must have got that wrong...
Wonder if it was fishing line I used..  

you need a G string !

From a guitar

D? - D10- D14 Bantams 350 AJS -500 Triumph http://bsanotru.....lfire.com/

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SpacedMarine
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July 15, 2019 - 2:39 pm
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Screenshot_20190715-143215_WhatsApp-1.jpg

Well were running a bit rich.Beginning to suspect the throttle cutaway.I had a spare slide knocking around so I ground a bit off it and it seems to be happier.Just wondering if I was to get a new slide how does the numbering work?I'm assuming the bigger the number the larger cutaway?I'm currently using a number 3.Wide open throttle is ok and it idles ok it's just theres a lag when you first pull away unless you give it full beans and it's like riding a turbo when you shut the throttle and open it again which is why I'm thinking slide????

Its also quite hard to start once its warmed up aswell. 

What's 7/16 in mm again?

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nickjaxe
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July 15, 2019 - 6:11 pm
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I experimented with them, James...I put a 3 in from a 3.5...started 4 stroking at light throttle opening at around 30mph...just sort of feathering the throttle.

It only really effects to about a 1/4 throttle.

What main jet have you in it...I went down to a 160...prob be ok on a 150 but didn't want to push my luck.

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

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SpacedMarine
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July 15, 2019 - 6:34 pm
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So I'm guessing the 3.5 was a slightly larger cutaway than the 3?

Wide open and part throttle seems ok so I'm not too worried about main jet have a 150 in at the moment but also have a 160 and 170 I can swap if necessary.Idle is fine theres just a great big hole when you first open it.

I'm thinking the plug may be a bit naff but it's not that old.

What's 7/16 in mm again?

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nickjaxe
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July 15, 2019 - 6:44 pm
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Have you checked the idle circuit yet?

That usually the culprit.

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

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SpacedMarine
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July 15, 2019 - 7:21 pm
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I haven't nick.Ive ridden it about 5-10 miles since I got back from rivington and had a couple of hours fiddling today.

What's 7/16 in mm again?

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Mannanan
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July 15, 2019 - 7:22 pm
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If you are happy that the pilot circuit is clean as a whistle, for what they cost, I would fit a new needle jet and I would only buy from Burlens Direct.    

Ed.

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SpacedMarine
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July 15, 2019 - 7:34 pm
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Mannanan said
If you are happy that the pilot circuit is clean as a whistle, for what they cost, I would fit a new needle jet and I would only buy from Burlens Direct.    

Ed.  

It has a new needle,needle jet,float needle and float as I got a rebuild kit from amal.it came with a different pilot screw to the one that was in(the new one was longer) so it has the old pilot screw.I guess it could be the circuit however it ran sweet not 6 months previously.Admitedly it stood for a while as I rebuilt the engine.The major difference to before is there are no flywheel plates on the crank so maybe lower crankcase pressure is a factor?I'd put the old float and needle in but they have disappeared under a pile of junk in the garage 😜.

It does seem quite easy to flood compared to before as I have had to undo the drain a few times and quite a lot of fuel has come out.

I'm sure I'll work it out eventually.I guess the next job is to check the pilot circuit then.

Then after that build a 4 inch crank and some stuffer plates 😂

What's 7/16 in mm again?

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nickjaxe
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July 15, 2019 - 10:35 pm
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Let us know how you go on James...off down to Shropshire on mine tomorrow...100ml round trip.

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

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