dajogejr Posted August 21, 2008 Report Share Posted August 21, 2008 Word... get the right domes....first time out. Quote Link to comment Share on other sites More sharing options...
dlnoss Posted August 22, 2008 Report Share Posted August 22, 2008 There are so many variables in a 2 stroke, it's tough to make 'general' statements. Usually a narrow squish band is better for high rpm, wider is better for lower rpm although there are exceptions. Lunatic, I would cut the angle at 11 degrees for Blaster pistons running gas. A 7mm stroker dome with an additional 3.5mm step cut into it would cc at 11.97cc more for 66mm bore and 12.71cc more for 68mm bore so a 30cc flat plate would actually be 18cc at 66mm or 17.25cc at 68mm. Quote Link to comment Share on other sites More sharing options...
lunatic Posted August 22, 2008 Author Report Share Posted August 22, 2008 There are so many variables in a 2 stroke, it's tough to make 'general' statements. Usually a narrow squish band is better for high rpm, wider is better for lower rpm although there are exceptions. Lunatic, I would cut the angle at 11 degrees for Blaster pistons running gas. A 7mm stroker dome with an additional 3.5mm step cut into it would cc at 11.97cc more for 66mm bore and 12.71cc more for 68mm bore so a 30cc flat plate would actually be 18cc at 66mm or 17.25cc at 68mm. I forgot to add its a alcohol motor as long as it falls in about 17cc -19cc im happy? Quote Link to comment Share on other sites More sharing options...
dlnoss Posted August 22, 2008 Report Share Posted August 22, 2008 You could probably do ten or maybe nine degrees. You can calculate the volume of the cylindrical 'slice' that you add to get an idea of the actual flat plate volume. Quote Link to comment Share on other sites More sharing options...
_Hex* Posted August 22, 2008 Report Share Posted August 22, 2008 (edited) The bore is only 66.50mm (.100") last bore on my sleeves and my domes are already 66.50 so no i dont need big bore domes. My domes are stamped 19cc 12* 66.50. Standard banshee 513 series domes are 12-14* not 10*. All im wanting to do is machine the squish band to the correct angle and set the squish @ .035-.040". So basicly cut the bands about .050" deeper not 2mm .080" cause the 573 has a .033" shorter compression height then the 795 series and change the angle from 12* to ??? is what im trying to figure out. My trinity head is cut @ 12* and my white knuckle is 14* So now do i have everyone confused cause im starting to confuse my self. lol u might be right about the stock one i dont remember off the top of my head, but the blaster domes that white knucle uses is cut to a 9* angle most commonly 9 or at least thats what we setup the piston with Edited August 22, 2008 by _Hex* Quote Link to comment Share on other sites More sharing options...
lunatic Posted September 9, 2008 Author Report Share Posted September 9, 2008 (edited) I finally got it together 11.3mm wide squish bands @10* & .035" clearance with 200#s in both cylinders. I will take it out this week end to see how it runs. With my luck it will detonate it self to death. Edited September 9, 2008 by lunatic Quote Link to comment Share on other sites More sharing options...
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