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keychange

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Posts posted by keychange
 
 
  1. I need to paint two Cota 247 bodies.  I have done it in the past but results were mixed.  I want to do this right and finish off with a very hard, fuel proof, KBS Diamond clear coat.  But before I get their I need to use the right pre-coat and top coat.  I would appreciate suggestions for both pre-coat that will give me a well attached base that I can sand to a good finish and then a sound top coat.  

    928B07CD-B454-4747-867D-2D79F2EC9419.jpeg

  2. Hi Daniel

    Manual says SAE20 or SAE 30  with 190cc per leg - I reckon most people use ATF ( transmission fluid ) which from memory is around 10 wt.  Works for me.

    Message me your email if you want a copy of the manual

    Cheers

    Andrew

    • Like 1
  3. Went to take my 247 for a run today and for the first time in years she wouldn't start.  No spark so started working backwards from the cut of switch ...finally removed the low voltage coils and it appears that I have a short circuit to earth.  So it looks like a burnt out coil - strange that it got me home without an issue last ride.  Does anyone know the correct resistance for the coil?

  4. Underslung clutch went out on Model 21M19228 on LHS an 21M6700 on RHS  ..but according to my original 247 Manual there was never a modification from 4 speed to 5 speed.     Your model is 21M .????   - there were 6 variants in gear box from model 21M   0600 - 3750 - 5288 - 6600   -7256 and  21385 

    Capture.thumb.PNG.557c934f958804ef29021f6411a73c01.PNG

     

  5. There are three tank/seat options ( maybe more ). I have the standard trials body as per your photo - the 247T  (trail) body with larger tank and longer padded seat and the later model large tank with very comfy seat.  The latter requires rubber grommet spacers for he rear mounts but otherwise fits perfectly and is very comfortable.

    montyanzac2010.jpg

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  6. I had similar experience with my 247 years ago - in mine the idle speed also increased -  appeared to be running lean but after many many hours and $$$ on the carbie I realised the timing  was slightly too advanced and that was the issue.  After no luck with depth guage I used paper timing disk - see attached and had no problems ever since.

    timing.disc.pdf

  7. 9 hours ago, dirtrider6 said:

    He said that he remembers getting epoxy to seal tanks but he had a huge collection at the time and doesn't recall if this bike was done, can you tell by looking inside, or should I just get it redone?

    Normally you can't apply a new sealer over an old sealer and it can be a big job removing the old stuff.  Wait until you can see what is there as long as the original sealing job was done correctly it should be fine.

  8. Take it easy in terms of long downhill runs for a few hours...but apart from that standard trials type riding is pretty ideal for engine break in ...but avoid labouring the engine ie: pulling away in a gear that is too high.
    I would also suggest that you get an after-market compression release - as the starter gear is very vulnerable and difficult to obtain.  I run 25:1 and castrol VMX80 in the gear box.  Some guys recommend ATF but my 76 model jumps out of gear in every gear and false neutrals everywhere.  With VMX it only jumps out for first, occasionally 2nd  but no false neutrals.  I am guessing that yours is around a 75 model - engine number should tell you.

  9. This small one was on mine when I got it - it protects the case covers but leaves the frame exposed as it is fitted above the frame. I have broken the frame on rocks so I got a guy to cut out a sheet of aluminium plate and I bent it into shape.  Problem engine sat lower without original and  when I measured it up for new one  I forgot to allow for the cases and so I ended up with both.  Sorry I don't have a recent shot with both.

    bashplate.jpg

    crankcase.jpg

    schmick.jpg

 
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