Bob Myers Posted April 11, 2012 #1 Posted April 11, 2012 I am tooling up to make a set of delrin motor mounts for myself, wonder if any one else here would be interested in delrin mounts for $40 delivered in con US? Full set, 6 pieces, machined to the drawings that have been floating around here for a while. I can also make these from aluminum, probably 6061, maybe even have them anodized to stop the galvonic corrosion. There would need be a decent demand for this, as the anodizing would cost me $100.00 if I did one set or 25 sets. Bare aluminum would be same price as Delrin, adding anodizing would raise cost some
SaltyDog Posted April 11, 2012 #2 Posted April 11, 2012 When you are ready to accept orders, let me know and I will send the payment.
Bob Myers Posted April 11, 2012 Author #3 Posted April 11, 2012 When you are ready to accept orders, let me know and I will send the payment. We can run the delrin ones anytime, takes about 2 days to get mmaterials, plain aluminum ones also. If you would want anodized aluminum we would need to wait until 20 or so sets were going, otherwise it would raise your price.
gscbertrand Posted April 11, 2012 #4 Posted April 11, 2012 I would like a set also. Let me know shipping to Canada and I'll add that to the payment. Thanks for doing this as I have been waiting for awhile now to get a set.
icebrrg3rd Posted April 11, 2012 #5 Posted April 11, 2012 I'd like a set of delrin ones, as soon as possible, as I have my engine out, and will be re-installing it within a few weeks (I hope). Let me know where to send the $$. -Andrew
Condor Posted April 11, 2012 #6 Posted April 11, 2012 What would happen if we only replaced the easy2get2 motormounts??? Would there be any improvement in handling, or a waste of time??? Say a set of 4 delrins. 2 fronts and the 2 in the middle??
Yammer Dan Posted April 11, 2012 #7 Posted April 11, 2012 (edited) I would be interested in a set. Not sure which?? Delrin?? I'll have to check on that. Are you thinking these would outwear aluminum?? I've read a little about this Plastic but not much. Edited April 11, 2012 by Yammer Dan
dingy Posted April 11, 2012 #8 Posted April 11, 2012 What would happen if we only replaced the easy2get2 motormounts??? Would there be any improvement in handling, or a waste of time??? Say a set of 4 delrins. 2 fronts and the 2 in the middle?? Nothing is ever as simple as it sounds. The two that are tough to change are the left rear and left lower front. The upper front right & left have the triangular bracket that can be unbolted, and the right rear & right lower front can be accessed by removing the lower frame member. The other two have welded frame tabs that make changing these tough. Gary
twigg Posted April 12, 2012 #9 Posted April 12, 2012 Question: How difficult is it to replace the "difficult" mounts ... and what real-world advantages do they give?
Coffeepot Posted April 12, 2012 #10 Posted April 12, 2012 Definitely interested in a set of Delrin mounts at that price.
Bob Myers Posted April 12, 2012 Author #11 Posted April 12, 2012 I would be interested in a set. Not sure which?? Delrin?? I'll have to check on that. Are you thinking these would outwear aluminum?? I've read a little about this Plastic but not much. I do know delrin is a much harder material than nylon, and much lighter than aluminum,it can be drilled and tapped, made into bolts much like any of the metals, and has zero chance of any of the galvanism type corrosion that is associated with aluminum to steel contact, is widely used as wear points on robotic equipment and material handling conveyors. I have ordered some material for this, will have several sets ready to ship by next Tuesday. Condor, if I understand the actual difficulties involved in replacing these from factory rubber, it is one of the front bottoms and one rear that is tough to remove. I may be wrong in my understanding of the writings, we shall see when I start to change mine.
SaltyDog Posted April 12, 2012 #12 Posted April 12, 2012 Bob you have a payment for a set of the DELRIN motor mounts for my 1983 XVZ12 standard. Thanks for your work!
Condor Posted April 12, 2012 #13 Posted April 12, 2012 Condor, if I understand the actual difficulties involved in replacing these from factory rubber, it is one of the front bottoms and one rear that is tough to remove. I may be wrong in my understanding of the writings, we shall see when I start to change mine. Yeah, I guess I need to do a little more eyeballin' to see what it'll take and go from there. There may not be an easy way to do it, and I don't really want to get into a big project. It would just end up on a pile with the rest of them..... Especialy since the '99 is more of a priority than the '91....
Bob Myers Posted April 12, 2012 Author #14 Posted April 12, 2012 Interesting, UPS just left here. He brought me a pile of 1½ round delrin bars. I suppose I should now get busy whittlin on one?
Flyinfool Posted April 12, 2012 #15 Posted April 12, 2012 My only concern with the Delrin motor mounts would be temperature. Delrin is rated for -20° to 180°F. The engine has a 190°F thermostat. I have no idea how hot the motor mounts may get in real life. Heck I ain't even sure WHERE the motor mounts are. Never looked for them. Does someone have a way to measure the temps of the motor mounts after a good run on the highway? If not, and if I get the bike back on the road next week, I will try to check some temps in the area of the mounts. These temps would be in 40° air temps so they may be hotter in the summer and southern heat.
Condor Posted April 12, 2012 #16 Posted April 12, 2012 My only concern with the Delrin motor mounts would be temperature. Delrin is rated for -20° to 180°F. The engine has a 190°F thermostat. I have no idea how hot the motor mounts may get in real life. Heck I ain't even sure WHERE the motor mounts are. Never looked for them. Does someone have a way to measure the temps of the motor mounts after a good run on the highway? If not, and if I get the bike back on the road next week, I will try to check some temps in the area of the mounts. These temps would be in 40° air temps so they may be hotter in the summer and southern heat. You bring up a good point Jeff..... Maybe this will help a little more on the properties of Delrin. I'd be interested in what temp. readings you come up with off your bike. Thermal Heat Deflection Temperature @ 66 psi D648 °F 336 Heat Deflection Temperature @ 264 psi D648 °F 257 Coefficient of Linear Thermal Expansion D696 in/in/°F 6.8 x 10^-5 Maximum Servicing Temperature, Intermittent °F 300 Maximum Servicing Temperature, Long Term UL746B °F 185 Specific Heat BTU/lb-°F 0.35 Thermal Conductivity – Melting Point D2133 °F 347 Flammability UL94 HB (1.47)
Keemez Posted April 12, 2012 #17 Posted April 12, 2012 Heck I ain't even sure WHERE the motor mounts are. Never looked for them. They're on the motor.
icebrrg3rd Posted April 13, 2012 #18 Posted April 13, 2012 Bob, there's a check crawling your way in snail-mail, sent out today. Thanks. -Andrew
Yammer Dan Posted April 13, 2012 #19 Posted April 13, 2012 They're on the motor. NO!! They are between the motor and the frame!!:whistling: Melting point would be the big thing wouldn't it? Or would the temp at which it could become deformed be lower??
Flyinfool Posted April 13, 2012 #20 Posted April 13, 2012 Melting point is where the engine falls out. It you reach that temp call the fire dept cuz your garage is on fire. Deflection temp is where things can start to move. Kind of like when you heat steel with a torch to bend it, it doesn't melt but it does get softer. Delrin does the same thing, it gets softer with heat. What I do not know is how hot do the engine mounts get on a 110° degree day, and at what temp will the Delrin start to deflect over time. From the info that Condor posted it looks like we should be OK with the Delrin. I was just looking at McMaster that said the max operating temp was 180°F, it seems that DuPont rates it higher at 210. http://plastics.dupont.com/plastics/dsheets/delrin/DELRIN100NC010.pdf
Bob Myers Posted April 17, 2012 Author #22 Posted April 17, 2012 3 sets paid for and shipping today!!
Bob Myers Posted April 18, 2012 Author #23 Posted April 18, 2012 (edited) Bob, there's a check crawling your way in snail-mail, sent out today. Thanks. -Andrew parts shipped today! 4-18-12 Edited April 19, 2012 by Bob Myers
icebrrg3rd Posted April 21, 2012 #24 Posted April 21, 2012 Got them! Thanks! Now I just gotta get my motor back together and back in. -Andrew
icebrrg3rd Posted June 13, 2012 #25 Posted June 13, 2012 Just wanted to let you know that the motor mounts are in. They fit nice and snug, no slop yet not an interference fit either. You have to make sure that the mounting holes are absolutely clean, any residue left from the old mounts make them too snug. The only thing is that I wasn't sure about the front lower mounts, as they have a nut that makes direct contact with the delrin and I wasn't too sure about that. I had some large chrome washers that I put in to make sure that the delrin was protected and wouldn't fail. Thanks again Bob for making these! Great buy! Seriously recommend them to anyone who needs new ones, or wants a nice solid feeling bike! -Andrew
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