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hewson

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  1. Villiers 11e

    in Pre-65 Bikes

    Posted

    On 12/10/2018 at 10:56 AM, rusty ken said:

    Hi Folks, thanks very much for the replies. 

    Teamferret; I think I have a 250 alloy barrel and head (which has horizontal fins like a continuation of the barrel?) tucked away in another corner of the shed.  I'd been told these were an aftermarket product, but had expected it to fit this engine, and even if it did that there would be a more current barrel available with much improved porting.  Would it be worth using this or is there a better (modern) alternative?  I'd need a piston, but that can be included the longer shopping list!

    I don't think the engine I have is the electric start version, as the timing side cover just seems to have the ignition system inside.  Is there a source for the gearbox end cover, kick start shaft, etc? or do I need to keep watching ebay?

    Section Swept & Hewson; Thanks for the info  on the timing side shroud and the photo, my casings don't look that clean at the moment. Your comments do make sense. Is the normal approach to machine the shroud back level with the casting for the main bearing, it's hard to get perspective from the photo?

    Thinking of performance, to make these engines work do I need to swap to full circle flywheels? (I haven't stripped the engine but am assuming it has bob weights?)

    Thanks again for the info.

     

    On 12/10/2018 at 10:56 AM, rusty ken said:

    Hi Folks, thanks very much for the replies. 

    Teamferret; I think I have a 250 alloy barrel and head (which has horizontal fins like a continuation of the barrel?) tucked away in another corner of the shed.  I'd been told these were an aftermarket product, but had expected it to fit this engine, and even if it did that there would be a more current barrel available with much improved porting.  Would it be worth using this or is there a better (modern) alternative?  I'd need a piston, but that can be included the longer shopping list!

    I don't think the engine I have is the electric start version, as the timing side cover just seems to have the ignition system inside.  Is there a source for the gearbox end cover, kick start shaft, etc? or do I need to keep watching ebay?

    Section Swept & Hewson; Thanks for the info  on the timing side shroud and the photo, my casings don't look that clean at the moment. Your comments do make sense. Is the normal approach to machine the shroud back level with the casting for the main bearing, it's hard to get perspective from the photo?

    Thinking of performance, to make these engines work do I need to swap to full circle flywheels? (I haven't stripped the engine but am assuming it has bob weights?)

    Thanks again for the info.

     

    20181215_145425 (1).jpg

    20181215_145510.jpg

    20181215_145514.jpg

  11. Bantam Yam Clutch Conversion

    in Pre-65 Bikes

    Posted

    Hi people , anybody had any experience with  this clutch conversion , i have one fitted to my bike , and it as no feel , either on/off , reminds me of a Montesa 315r i had a few year  back , mod was fit motorcross plates and play around with different oil  , any tips -mods please ...Cheers 

  19. Pre65 Project Costs

    in Pre-65 Bikes

    Posted

    Here is my Drayton framed Bantam build , took 2 years and its near finished  , steel hub's , turned gears  , i sourced all parts myself . did a few deals here and there  , but it can be done on a budget with time  ....Around £3000 at this stage 

    SDC11265_zpstrbsmlvo.jpg

    • Like 1

  23. 125 Converted To 200 Anyone Done One?

    in Fantic

    Posted

    I had a 1983 Fantic 125 pro twinshock forward kick bike with Densi ignition , it had a 1.492 kg flywheel , i played around with different engine parts over the years , and at one time had a 205 (156cc) mono engine in it , motoplat ignition flywheel weighed 1.601 kg , so extra weight not really needed . Bike gone now , but i think i ended up with a 51- 52 tooth rear (428) sprocket .... Best handling bike i ever had ...

    • Like 1
 
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