howardsmed
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    • howardsmed
      howardsmed replied to the thread dyno sheet.
      David Newman doesn't run the company anymore, he has left that to his son Ken. if you call mention me, they know me well I will put...
    • howardsmed
      howardsmed replied to the thread dyno sheet.
      we copied the 25-130 profile and reduced the duration, and the program at Newman's "computer smoothed" the profile as well as...
    • howardsmed
      howardsmed replied to the thread dyno sheet.
      I went to see John Andrews years ago at Andrews cams in the USA, he was particular about what machinery he used and he had Landis. Ken...
    • howardsmed
      howardsmed replied to the thread Project 100hp rephased 880.
      I have used SP370 pistons,( 85mm) i built a bike for martin Guilford, who was a professional sidecar moto-crosser, ( his father Mike...
    • howardsmed
      howardsmed replied to the thread Project 100hp rephased 880.
      I am not angry, sorry if it sounded so, email can be misconstrued easily, i am very grateful for your advice, i have seen your work, and...
    • howardsmed
      howardsmed replied to the thread dyno sheet.
      Yes. the pin bores do wear on the XS650, but in the hundreds of XS engines i have seen, it is VERY rare. The XS1 I have, sat for a long...
    • howardsmed
      howardsmed replied to the thread Project 100hp rephased 880.
      Our XS880 has 92hp rear wheel hp, ( from TTS one of the most reputable performance shops in the UK) when someone shows me an XS650/880...
    • howardsmed
      howardsmed replied to the thread dyno sheet.
      Hi Christian I worked for Carl Morrow in Sana Fe springs tuning Harleys in 1994, Megacycle were in CA too, so no bother, but now, with...
      • G&S valves, Smedspeed Beehive spring kit.JPG
    • howardsmed
      howardsmed replied to the thread dyno sheet.
      Hi Christian SR500---the 41mm is the OD, all tubing in the UK is measured on OD, so yes the internal diameter will be the same size as...
      • welded chamber sr500.JPG
      • raised inlet port +6mm.JPG
    • howardsmed
      howardsmed replied to the thread XV750 pistons.
      Yes they are flat topped, which means its easy to set the deck height, and thus the squish clearance, we will have to get some 83.5mm...
    • howardsmed
      howardsmed replied to the thread XV750 pistons.
      it wont be a cheap day out if you do the stroker crank too, that is a lot of engineering work, However the 800cc big bore will be a bare...
    • howardsmed
      howardsmed replied to the thread XV750 pistons.
      I had a long chat with Rick 10 minutes ago, we will do the stroker crank first ( people have been using 84mm strokers for 40 years, so...
    • howardsmed
      howardsmed posted the thread XV750 pistons in The Garage.
      Just thought his snippet of info should be out there. This is for UK and European engines only, which have 533 con rod length ( 140mm...
    • howardsmed
      howardsmed replied to the thread Project 100hp rephased 880.
      half a lifetime ago i worked for a HD tuning shop here in the UK, i had a set of Branch heads on my 80, and then STD modified bathtubs...
    • howardsmed
      howardsmed replied to the thread dyno sheet.
      The XV valves we have used a fair bit, they are +2mm oversize, which means that the seat ID ( the seat choke point) will be 89/90% of...
    • howardsmed
      howardsmed replied to the thread dyno sheet.
      I am not a fan off slagging people off, BUT Lenny Paterson from the cylinder head shop is not a nice man, he is full of chat, but in the...
    • howardsmed
      howardsmed replied to the thread dyno sheet.
      You must be joking, Lenny Paterson of the Cylinder Head Shop is a crook, who talks rubbish ( see his website, bigging himself up) with...
    • howardsmed
      howardsmed replied to the thread dyno sheet.
      its a race engine, built for Steve Mann, BUT it did pull a sidecar and two people, and started and ticked over well, it is really just a...
    • howardsmed
      water jet cutting is excellent i have had hundreds of parts done, in titanium, lithium, stainless steel, copper etc strangely the only...
    • howardsmed
      howardsmed replied to the thread Project 100hp rephased 880.
      i have asked Steve for the dyno sheet on the race 750 we did with 76hp, i will post it if he can find it. The 880 was a real surprise...
    • howardsmed
      howardsmed replied to the thread Project 100hp rephased 880.
      Hi Dan i have just done a raised port inlet and exhaust on an SR500, the port is +6mm higher, which straightens the port pout no end. i...
      • roughly D shaped ex port.JPG
      • raised inlet port +6mm.JPG
      • welded chamber sr500.JPG
    • howardsmed
      howardsmed posted the thread dyno sheet in The Garage.
      I found this dyno sheet when i was tidying up the external hard drive the engine is one i built for Steve Mann CRMC sidecar racer, this...
      • 750 dyno sheet.jpg
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