Hello – apologies if this is a daft or oft repeated question. I have looked through the forum and started reading the literature on the web but just wanted to check something so my friend and I could crack on with starting up our new acquisition…
I have just bought a 1925 3 speeder. There are two oil drips fitted to the oil tank, which appear to go direct to each crank pin, with no pump. Am I correct about that?
I read commentary about the pilgrim pumps being suitable for thicker oil than modern two stroke but if I have no pump, is this not a problem?
Is the advice about DPM still valid for a plain drip feed, ie without a pilgrim pump? I assume this plus a suitable pre-mix would be sufficient to get us going?
A straight 30 or 40 is perfect for the drippers (that indeed go to the main bearings). I always use what is available and never notice much difference in thickness. On a two/three speeder with the oil tank behind the rad you have to adjust the drippers every now and then as the oil heats up because of the hot air coming from the rad and the oil get thinner.
I do premix a bit of two stroke oil in the petrol but that is mainly for my own peace of mind. The bike sort of seems to run better with a bit of premix…
PS just be glad you do not have the pilgrim. Just another thing you don’t have to worry about!
Craig, my method is 40 grade oil in the tank and 50 to 1 mix in the fuel i have used saab ts oil in the fuel also Stihl ts oil .Iset the drips as one dropfallls the next starts to form . This is with machine hot slight blue haze from the exhaust is good. This has worked well for me. regards D F .