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Almost finished D10/D7 mix
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Daffers
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March 17, 2021 - 3:52 pm
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Been in bits in boxes for over 40 years, but it is now almost complete.  Cannot get it started using the kickstart, in fact the husband snapped the end off the kickstart trying.  But, after much tinkering on his part and heavy push start work we got it going.

rsz_bantam.jpg

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stubaker58
Sunny Felixstowe
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March 17, 2021 - 5:32 pm
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Nice feeling isn’t it!

well done, enjoy it.

“There’s nothing new under the sun”.

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Daffers
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March 17, 2021 - 6:15 pm
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I certainly will, if we can get it to start easily.

 

On that topic it is a D7 engine with a magneto ignition.  Anyone know which spark plug I should use.  I have found info on the D14, does it make any difference for the D7?

 

Thanks in advance.

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Stoo63
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March 17, 2021 - 6:43 pm
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Well done, Daffers. Lovely job! I think you should be using the shorter plug for the D7 rather than the 3/4 one for the later bikes, although someone will be able to confirm if that's right. Obviously , since they were built, there has been massive progress in the spark plug range and many will have their own opinions. Great that you've got the bike going just in time for the good weather 🙂  Just remember to park it on a hill if you've no kickstart. thumbs-upthumbs-up

 '55 D3 Battery; '58 Square Four (project); '59 D1 direct lighting plunger; '59 Tiger Cub; '60 5TA;  '76 FS1-E; '91 GTR 1000;  '97 Honda Sky SGX50.

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sunny
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March 17, 2021 - 7:19 pm
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well  done     ,.,you  wont   medium   reach  plug     set at   18   to  22   thow    NO   resister  CAP .,   if the  carb  is  clean  enuf  and  set  rich  it 

will  start  second kick     reset  the carb   wen  worm      ,.,remenber  Bantams  run  on  the rich  side   thay  DONOT   HAVE  A LEAN  BERN  engine

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Daffers
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March 17, 2021 - 7:56 pm
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Thanks chaps.  Will try and find the right plug and have another go.

The kick start lever is still on the bike, but the end is snapped off.  Can still use it if you are careful.  Will it weld together?  Wondered about adding a bracket to the end just for the short term.

No electrics fitted yet.  That is the next task.  

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Unitminor
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March 18, 2021 - 2:52 pm
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From a BSA D7 instruction manual it list the spark plug as a Champion L7 which a 1/2 in reach you would probably need the modern equivalent model . 

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Daffers
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March 18, 2021 - 3:26 pm
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Just put an order in for one.  Hoping that was the problem.  Then need to bodge a fix on the kickstart for the short term.

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Daffers
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March 20, 2021 - 1:08 pm
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sunny said
well  done     ,.,you  wont   medium   reach  plug     set at   18   to  22   thow    NO   resister  CAP .,   if the  carb  is  clean  enuf  and  set  rich  it 

will  start  second kick     reset  the carb   wen  worm      ,.,remenber  Bantams  run  on  the rich  side   thay  DONOT   HAVE  A LEAN  BERN  engine  

Changed the spark plug and the cap but still not starting on a kick.  Very easy to bump start though.  Anyone any thoughts?

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sunny
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March 20, 2021 - 1:25 pm
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if  the crankshart  and  oilite  have  moor than a 1 1/2  thow  eggshaped   gap  between  them     it s  not  good   have  you  fited ,  set  and  oiled  all the .points  parts    for a  good  return  its  wen  the points   OPEN   that  givs  the  spark .,.,  like   wen  you hold  the  key  on  your  keybord   its  only 

wen   its   releast  it  macks the  next  post

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Daffers
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March 20, 2021 - 1:46 pm
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Thanks Sunny.  John (husband) checked everything.  He is going to work through it all again now that we know it will run.  Happy that it starts so easily on a bump though, seems to run fairly well but as it is not legal yet cannot take it out very far.  John is going to make the loom and I have to fit the speedo cable.  Will keep you posted. 

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sunny
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March 20, 2021 - 1:54 pm
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graet   stuff    Daffers     well  done   to  you  both    

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Daffers
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March 20, 2021 - 3:04 pm
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Thank you.  Much appreciated. I have just been battling with the chain guard, it looks straight but is catching the chain at the back, think it needs a big hammer to it.  Ruined my paintwork at the same time of course.  The speedo cable is not fitting onto the speedo gear.  Very annoying as it came off the bike 40+ years ago, threads look ok but not having it, both ends will fit onto the actual speedometer a few turns.  A new one is needed I guess.  Back to the drawing board.

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Unitminor
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March 20, 2021 - 4:24 pm
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Have you tried taking the inner cable out and then try fitting just the outer cable to the speedo gear to see if it will thread on then .

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Daffers
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March 20, 2021 - 8:23 pm
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No.  Not thought of that.  But will try tomorrow.  The inners (with the square ends) fit but the screw threads on the outers not working at all.  Last time this bike was together was a long time ago, in Kings Lynn,  and things like this did not matter.  Will keep you posted.  Thanks.

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Sponge
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March 21, 2021 - 9:07 am
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Daffers said
No.  Not thought of that.  But will try tomorrow.  The inners (with the square ends) fit but the screw threads on the outers not working at all.  Last time this bike was together was a long time ago, in Kings Lynn,  and things like this did not matter.  Will keep you posted.  Thanks.  

I recently went through this play-list with my D10A but got it sorted in the end without having to replace any parts. These parts can sometimes cause frustration and seem as though they don't fit but if it was all working 40 years ago there is no reason that it might be busted now unless something has changed in storage. These fine threads can easily get crossed up and pretend that they are engaged when they are not. 

Previous advice on this thread  is sound...suggest remove the speedo and the cable and even the back wheel if you have the time...you can test the speedo with your elecric drill covered in previous posts. Then clean it all up...remove the inner drive cable and degrease it etc....then clamp the wheel in a vice and lay everything out in a straight line and carefully screw it all together starting at the back wheel. Before you fit the speedo ....spin the wheel and check that the inner cable is turning nice and smooth. ....... once you put the  speedo on it should all work ....listen for noises and clicks and clunks and pay close attention to all the threads. If anything is broken you will know what to repair/replace.

You will then have the confidence that it all works, so you can grease it up and fit it all up to the bike with confidence. Good luck and ride on.

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Daffers
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March 21, 2021 - 10:00 am
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Great info and help on here, thanks everyone.  I will have to take the back wheel off soon, as need to tighten up the mudguard and number plate, and those bolts are not accessible otherwise, at least mine are not, so that is the ideal time to work on the speedo.  Might make fitting the chain guard a bit easier too, it needs knocking into shape a bit first and a repaint.  Thanks for the clear instructions Sponge.

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cocorico
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March 21, 2021 - 10:03 am
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Sponge said

... you can grease it up and fit it all up to the bike with confidence. Good luck and ride on.  

Grease it sparingly, though. Especially at the speedo end, so that it doesn't work its way up into the speedo mechanism.

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Sponge
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March 21, 2021 - 10:08 am
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No problems. Much as I hate undoing the brake rod and the drivechain and re-aligning the wheels it is always quicker and safer to pull the back wheel out if you need to tighten up the mudguard bolts or fix a back light electrical problem etc.....

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Daffers
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March 21, 2021 - 10:45 am
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It will be a good lesson for me, and the chain is loose so the wheel needs moving back anyway. May as well do everything at once.

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