it works great...you can purchase the bushing set at auto zone for $14.00...tierod ends...2 per pack...just dont use the bolt thats with it...its only grade 5...go to a fastener and get a grade 8 from them...dont buy counterfits at the hardware stores...taped out mount at 5/16 coarse...tight...i use Cold Wield...for added strenght...not jb wield...i wielded a piece of conduit on the frme expander flat plate and wielded the nut on it and bolt it in and run you mount bolt thru the frame and away you go...ha...as you can see i placed turn buckles on the engine...top and bottom...any thing goes wrong you are covered...hope this helps...need more just howler...good night...dennisLove the bike the motor mount looks good cool please let us know how well it works
i like your idea...beafed up hangers from maybe an electrical department with urithane bushings, around 60 derometer might be the answer...i took my rubber shims off my back motormount and replaced it with leather...i use as many leather shims as possible...kills the vibration...i have my to motormounts and two turn buckles...i have two brackets i made...one on the exhaust and one on the back motormount...this is a crom moly frame not aluminum...i put this engine on the bike from instructions i recieved and the ones on the internet...wrong...now ive done it my way and its working...so put yours togeather your way and for good or bad...you'll have fun...keep me posted on your plan...im building another v frame bike...remember these are bicycles with engines...protect your ass and have fun...you know im going to be 62 next month...when i was a kid the weekly reader said we would all have are own helicpters by now...it didnt happen...use your ideas, because the assholes that thick they know everything are sent us down the wrong path...ha...keep in touch...dennisHi
Is that a 3 point engine mount?
Could you please tell us about the 3rd point?
I was thinking about two metal clamps secured around rubber donuts in the mounting locations, and the engine bolted to the clamps
Will build my prototype and post pics
I took a piece of 1/4 inch black pipe, ran it through frame and mig welded it in place on both ends.This made a solid mount with no stress on frame.Since the 1/4 pipe is 1/4 id the bolt fits great.Harley and honda do this on every frame they make and i have never seen one break yet.I know most of you dont have welders but it is worth the time to take it to a shop and get it done.you might want to drill the hole yourself and cut your pipe to fit and have it ready ,The more you do the less the welder will have cut and fit.Less time means less labor. HARLEYS DadI'm not a structural engineer, nor do I play one on TV. This has issues - IMHO.
While I like the bushing idea for vibration dampening, I think this sends at the very least some visually alerts off in my brain.
1) I don't think drilling through the down tube is ever a smart idea. Maybe if it was a hole alone it wouldn't be an issue but you've got a buzz saw on a single bolt throught the hole.
2) Is that another hole (smaller) perpendicular to the mount hole?
3) You have the dynamic mass almost at the center of the chord.
So I put this all together and it seems you have created a fatique point and are purposely reefing on it with engine movement
I hope someone tells me I'm full of poo and you are safe.