If you could tell me the part number for the urethane trailer Bush it would save me some time for the handlebar mount.
I wish I could. We have a chain of auto parts stores here called "Super Cheap Autos", its kind of like a dime store for auto parts and many of the parts are of "dime store" quality. The bushes in question were simply in a shelving bin marked "trailer bushes" (probably to avoid product liability if someone fitted them to a car) I measured them up based on what my trailer takes and it was only later that I realized that they also fit the K100 top triple clamp.
I zip tied the lowers. If you makes two plates I will pay you for your time. 8-)
Done deal!
Woo hoo. You did the r860 cylinder piston install. I must read about this. I saw them the other night. Bit worried about blowing out the bottom end making too much power....
Well no...not yet. I've pulled the kit out several times intending to fit it, but each time something has intervened and it all got packed away again.
I made some intemperate comments to someone in the Facebook R65 group the other day as they were holding forth that the R65 engine just isn't suitable for a capacity increase as it is not "strong enough".
I asked him which bits were too weak to take a capacity increase and he went silent on me. Then someone else posted about all the horror stories they have heard regarding punched out R65s.
With a big sigh I gritted my teeth and let him have it with both barrels...... Below is an excerpt of what was a very long facebook post:
[start rant]
I have been looking for some time at various strategies to increase the power of an R65,I have heard both the success stories and I have heard the disasters. Firstly I'd like to comment on the bad outcomes. The R65 has EXACTLY the same gearbox as its larger siblings, the final drive box is made of the same metal and has the same sized bearings as the larger bikes, so any drive line failures would probably have happened anyway.
Next if you look at the R65 engine, the oil pump is the same, the crank bearing sizes are the same, the cam chain is the same. In fact the only real differences are the crank throws (shorter stroke), conrod lengths, cam followers (different design to allow deeper contact with the pushrods to lessen the articulation angle. Anything else is merely a dimensional change of a well proven, soundly engineered part. So what is the problem with capacity increase kits?
Until the relatively recent arrival of the SiebenRock kit the general way was to machine down the length of a set of R90/100 barrels and either use slightly altered R65 heads or R75/80/90/100 heads. The big problem with all of this is that the longevity was utterly dependant on the machining skills of the person modifying the new componentry. There was also considerable reliance on the skills of the person doing the assembly, they had to know what they were doing, how to measure and how to further modify the various components for the correct fit.
After having had discussions with people who proceeded as above I have formed the opinion that in many builds that ended badly either the machinist or the assembler lacked crucial skills/knowledge. Of course I have NEVER heard anyone say "I screwed up because I didn't know what I was doing" so it was invariably the fault of the kit or some unspecified inherent fault in the R65 engine that turned what should have been a triumph into disaster.
In a word - BULL$HIT!.
Enter Messrs Siebenrock's kit - specifically engineered so that not too much actual mechanical/engineering skill is required to screw it together. But people still report failure. But then some people cannot manage a top end refresh using stock components as the number of lubrication failures from things such as blocking the flow through the upper studs or fitting the rocker shafts upside down attests.
My own view is that it is a little gung-ho to subject an engine that is at least 30 years old to a 32% capacity increase without at least inspecting crank and rod bearings, camshaft, followers, rockers and valves. Yet people continue to buy Siebenrock's kit online and spend a Saturday bolting it all up and then wonder why the end result was less than stella.
Some legitimate concern was initially raised regarding the squish arrangements of early kits, the piston crown being not well matched to the heads but that is in the past with the current pistons in the kit specifically designed to match the R65 heads.
[end copied rant]
And so it went on and on... The take home is that I discount anyone's tale of woe if they didn't do a complete engine refresh prior to fitting.
