DB
Thanks for the input ! Dont know about the heat transfer aspect on the anodized layer or not but it would definetly be cheaper. I hadn't considered the magnet either the dipstick has one but the 06 has none so I never gave it another thought. not a bad idea maybe glue one on the cover ! I have another idea for a a large flat gasketed cap over the upper shaft area that would have a big hole to fill through and hopfully make it easier to fill .Do you have any other thoughts or ideas where the best place would be ? I am all ears this is my biggest concern at this point . The prototype does not have a fill hole for this very reason.
I suggest placing a fill hole on upper half of the cover and a sight glass on the bottom.
IMHO would suggest both holes to be standard holes to be replaced with a standard bolt in case they brake or lost.
I would make the sight glass on the bottom only large enough to see the "full" level so in case the sight glass leaked or fell out the cover would retain some lube instead of running out the sight hole.
Also , makt the cast a slight bit thicker on the entire cover or thicker gradually on the upper half starting between two bolts to compensate for expansion/warping UNLEs the cover is already thick enough.
The slight increased cover thickness will help compensate for the weakness when taping for a screw hole to fill it with oil.
You don't have to get fancy about the fill hole, I would put the hole in the upper half with a standard screw, 3/16 or 1/4 inch. Maybe the common bolt used on the 900 sled chain case cover?
I would prefer a much smaller diameter.
For reliability and a place oil would leak least is in the middle of the upper shaft unless the "common chaincase bolt" is too long.
The centrifical force of the shaft will keep oil from coming out the hole if the screw falls out. So second best place would be just above the tension adjustment on the oyher side of the case and beloow the diameter for the top gear. This should be okay for the extra lenght of the chaincase bolt.
For me I don't know anyone who tries to fill a gear with a quart bottle.
You transfer fluid into something or use a funnel.
I use a food syringe with needle. Cost 99 cents and holds 5 ounces with a 2 inch needle included. The needle can bend some so as long as the hole is greater than a 1/16 inch I can get oil in it.
As far as the magnet goes ... the easiest and cheapest would be to tap one more hole at the bottom away from the current/flow of the oil spinning on the chain and screw in a magnetic drain bolt . A magnetic drain bolt with gasket stardard for a motorcycle cost around $7.00 retail or you could get a fancy CNC anodized one for $15.00
