Subject:RE: oil baffle plates Date:Tue Jan 9 07:01:28 2007
Response to:1412
Hello Sverre , hope you had a good sleep , not sure about questions 1,2&3 but for 4 I attach a copy of the Excelsior Henderson Restoral Society , bulletin of 1982 , not sure whether this will help or confuse but hope the former !!
I have no problems with rods hitting baffle plates in my Deluxe , KJ or ACE as the engines run in the bikes very sweet and the baffle plates are in boxes on my shelves , I've only done about 35000 miles on these bikes and have had no oiling problems . I am not advising you to remove yours , I just thought that as I have modern oil control rings , there's no need for baffle plates and as far as I know baffle plates are not used on modern vehicles anyway ?
What do I know , I'm no engineer just put miles on my bikes I look forward to any coments , happy riding all for 2007 good luck with your rebuilds , Ken



Why is the metering reduction necessary in the inlet elbow that enters the crankcase on the right hand side of the crank case ? Several inquiries have come in on this item and have to be answered often and have been explained several times in the past issues of the Bulletin .
The metering nozzle installed in the elbow is important to equalise the oil pressure entering the case to prevent a superfluous oil flow in relation to the oil needed to supply the rod and main bearings and the driving member and transmission gear . Without this metering nozzle , it is impossible to get any amount of oil pressure to show up on the gauge and the low pressure is evident after the oil has warmed up after the engine has been run for a time . There is no oil that will maintain itís body through high temperature and even with metering , oil will flow through a lot faster when hot , resulting in most of the oil supply being held in suspension causing fouled plugs , excessive oil consumption and the best of piston rings or baffle plates cannot seal all the oil that can enter the case . If not controlled , a primary adjustment is provided with the by-pass flow , but it has itís limitations . Even with all oil flow cut off at the by-pass , the final metering nozzle controls the oil flow , and a few drops of oil at the by-pass is sufficient to lubricate the timing gears . The first by-pass orifice was a spring and ball made to open as the oil pressure became too great and could be adjusted to increase or decrease oil flow. On the next models , the positive by-pass adjustment was introduced , leaving out the spring and used a solid shaft to push the ball enough to completely shut off the oil supply to the timing gears and should be backed off enough to insure a small amount of oil to lubricate the timing gears ; thereby maximum oil pressure could be obtained. At the factory , since many of the riders misunderstood the principal , we returned to the first arrangement with a very small orifice (0.040 Forty thousandths) which would not have to be adjusted. .The orifice at the inlet elbow (1/8th together with the last mentioned by-pass orifice) provided maximum oil distribution for the (5) main bearing engine and also a larger oil pump was used on the later KJ models with a larger suction pipe . The older K models used a 20 pound gauge . The Deluxe models used a 50 Ė pound gauge and the KJ used a 75 pound gauge . The K and Deluxe pumps were used on all models up to motor No KJ33355 , and any pump can be used as long as the proper screen and fittings are used . If the engine is set up correctly , as per main bearings , con rod bearings etc , and the oil pump is in good condition , the oil pressure is assured unless from loose fittings and unsoldered nipples . Sometimes after repairs , the pump may need priming to introduce oil flow . Be sure that the oil screen is clean and that You have sufficient amount of oil of the best grade and proper weight since the engine is air cooled . Inferior oils break down fast and lose their body . Recommended oils are : Valvoline , Mobil , Monogram and Quaker State . For moderate zones , use No 50 year round unless the temperature drops below freezing - then drop to 30 and around the zero mark , it is advisable to use No 20 . Oil must flow at any temperature , and the gauge should come up almost at once . If the temperature moderates , oil should be drained and a heavier oil resumed . The following page illustrates the model K force feed oiling system . It will give You an idea of the oiling system used on model K and later models of Hendersons . NOTE from schematic drawings , the orifice in the front end of the crank shaft will supply sufficient oil to the timing gears , and the flow is governed by the amount of pressure in the lines . The by-pass adjustment is meant to control the pressure , and the lubrication does not have to depend on by-pass flow , and in the event of high-speed operation , can be cut off completely for maximum pressure . This is a complete treatise on oil pump function , but more articles will be printed in future issues of the BULLETIN .

Thanks a lot for the updates regarding the oilbaffle plates Perry.
Having read this force me to raise a few questions:
First off, I bought the new style baffle plates from Rob Olsen.
As I had never seen these baffle plate instructions when I assembled my motor I didnt know there should be a spacer in-between the plate and case at screw 6 (underneath the cylinder. The original baffle plates where long gone when I took the remains of my engine apart. Will the lack of this washer cause any severe problems?

Second, what does Henderson mean by "oil pumping trouble"?

As I am still working with assembling the bike chassis I have not yet been running the engine, hence have no experience with this or that.

Third, have there ever been problems with rods catching the baffle plates due to any reason when having been running the engine?

Fourth, can anyone of the experts explain to me the shown modifications to the Henderson oiling system where restrictions are put into the cranck and center bearing oil inlet elbow.

Fifth, will I sleep tonight when I lay there thinking about the missing washer?