Thursday, January 20, 2011
Friday, January 14, 2011
little john tranny ever wonder whats in one
im sure everyone has seen the ads in the old biker mags for a little john 5 speed tranny but have you ever seen the inside of one well heres your chance
the case was made about a half and inch longer than a harley case and the countershaft and case bushings were removed and replaced with the plugs shown below
the mainshaft was made longer to accomidate the extra gear the first second cluster was shortend about a half inch and the main drive gear now has two gears on it instead of one
the top looks just like a rachet top but is slightly longer and has a square shape on kicker end the shift drum is made out of solid steel they also machined an extra groove in it for a third shifter fork also the two shifter gears are cut on slight angle looks like its to make up for machining errors
the shifter fork finger portion looks like its from a turtle top the forks them selves have been narrowed so they wont hit other gears
the counter shaft cluster doesnt have a removable shaft one end is a hole bearings go in and the plug slides into it the other end is supported by a plug bearings go in and the cluster slides in both plugs go into the case and supporting the cluster
Thursday, January 13, 2011
Tuesday, January 11, 2011
cleaning out my computer again
i dont know who built the red honda but its real nice
done at last
well i can finally say i am finished with the mold
yesterday i added on the little square that will make a notch in the housing for the liscence plate lens i screwed it on and the cut it to a 2 degree taper to match mold top half i also removed an inch off the bottom to get ride of some weight
the orginal housing fits the mold so well that the tapers lock to the piont i have to pry it off
after seeing how hard it is to get the orginal housing off the mold cory and i added the aluminum plate with ejector pins on the four corners of the housing so i wont have to pry the housings off i will be able to hit the corner of the mold with a rubber mallet and the ejector pins should just push the housing up enought to take it off by hand
hopefully in a day or 2 i will get to try casting a housings
yesterday i added on the little square that will make a notch in the housing for the liscence plate lens i screwed it on and the cut it to a 2 degree taper to match mold top half i also removed an inch off the bottom to get ride of some weight
the orginal housing fits the mold so well that the tapers lock to the piont i have to pry it off
after seeing how hard it is to get the orginal housing off the mold cory and i added the aluminum plate with ejector pins on the four corners of the housing so i wont have to pry the housings off i will be able to hit the corner of the mold with a rubber mallet and the ejector pins should just push the housing up enought to take it off by hand
hopefully in a day or 2 i will get to try casting a housings
Friday, January 7, 2011
3 cylinder shovelhead
i was going thru some stuff today and came across this picture of a bike my dad an a guy named bob built
back of the picture say still buzzing and is date 82 so who knows how long it was together before the pic
also like to say thanks to jason at death science for the nice post his link is right ------>
back of the picture say still buzzing and is date 82 so who knows how long it was together before the pic
also like to say thanks to jason at death science for the nice post his link is right ------>
Thursday, January 6, 2011
tail light update
after a few days of research i found out what the orginal tail light housings are made of their are 2 choices in material
one is zamak 3 this is normally used with injection molding it requires high pressure and set up fairly quick
the other is za-8 this is a combination zinc and 8% aluminum mixture the higher aluminum content allows this to stay fluid longer and can be pour in with a ladle
both materials have are pretty much equal except for the fluidity time
i bought za-8 because this is what harley uses for their tail lights so i know this will chrome real good
and after a few day waiting the material has arrived this is what za-8 looks like
za-8 melts at 850 -900 degrees
requires no degasser or fluxes
the steel mold will have to be preheated to 300 - 400 degrees
for mold release either actylene tourch soot or graphite powder i also read people use talcum powder
i am waiting on a 2 degree tappered end mill to arrive so i can cut the tapper on the little block i added to the mold so i will not have to cut out the liscence plate lens window then the mold is finish and i can try making one
one is zamak 3 this is normally used with injection molding it requires high pressure and set up fairly quick
the other is za-8 this is a combination zinc and 8% aluminum mixture the higher aluminum content allows this to stay fluid longer and can be pour in with a ladle
both materials have are pretty much equal except for the fluidity time
i bought za-8 because this is what harley uses for their tail lights so i know this will chrome real good
and after a few day waiting the material has arrived this is what za-8 looks like
za-8 melts at 850 -900 degrees
requires no degasser or fluxes
the steel mold will have to be preheated to 300 - 400 degrees
for mold release either actylene tourch soot or graphite powder i also read people use talcum powder
i am waiting on a 2 degree tappered end mill to arrive so i can cut the tapper on the little block i added to the mold so i will not have to cut out the liscence plate lens window then the mold is finish and i can try making one
Monday, January 3, 2011
new ad
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