|
Post by kawonda750 on Apr 13, 2022 6:30:55 GMT -5
Frame is gusseted for strength and rigidity. We'll see how it is in real life.
|
|
|
Post by Walms on Apr 13, 2022 8:40:54 GMT -5
I think the perception of a weaker frame on the 500 is due to the poor geometry. It seems the rear of the 500 is much lower than the H2 and S series. I would think longer rear shocks and 18" front tire would make any H1 handle better.
|
|
|
Post by kawonda750 on Apr 13, 2022 9:46:20 GMT -5
Not sure if it makes a difference but the KH front end is a little different. This also has a beefier H2 swingarm. Only time will tell. Plus, being the cheapo, I would need a new front fender and mounting for an 18 front wheel....
|
|
|
Post by Walms on Apr 13, 2022 11:21:30 GMT -5
Totally not a requirement, just an explanation... Looking at the frames side by side, nothing stands out why one would be considered to be more flexible.
|
|
|
Post by zambia on Apr 13, 2022 17:01:37 GMT -5
I believe the engine sits much lower in the H1 frame. I know this because it is very tight to get a dial gauge in the spark plug hole of an H2.. but put that engine in an H1 frame and you have loads of room above the heads. Now mostly, I'm talking about the '73 and up frames..but I imagine it's the same with early H1... If this is true (they sit lower) I think someone like Walms could explain how that impacts rigidity.
|
|
|
Post by Walms on Apr 13, 2022 19:51:02 GMT -5
In my mind, when talking rigidity of a frame, I think about a torsional load between the headstock axis and the swingarm axis. I don't believe engine placement would change this significantly. Lower center of gravity on a bike would make it feel lighter to handle. I consider a poor handling bike, one that pushes through the corners and wanders (non-linear feedback on counter steer) I saw a dramatic improvement in handling on my Bandit by raising the rear 1.5", it went from pushing in the corners to nice and quick turning like my triple.
|
|
|
Post by kawonda750 on Apr 14, 2022 7:35:09 GMT -5
Well, you lost me at torsional. Of course, not surprising for a retired hinge salesman. I'll see how the whole thing works once it's done and then be asking Andrew for input.....
|
|
|
Post by Walms on Apr 14, 2022 10:54:47 GMT -5
Imagine putting a bar through the headstock and also through the mounting holes for a swingarm and cranking on the bars like a big Cork screw handle. This is the type of loading you'd see going through a corner. Google Tony Foale, his frame designs use a big diameter tube going straight from the headstock to the swingarm pivot. This is likely the most efficient frame for resisting the twist (or torsion) between the 2 points for this... the only problem is, this frame gets into the way of the engine.
|
|
|
Post by Walms on Apr 14, 2022 10:57:23 GMT -5
Not sure if this is a Tony Foale frame but as frames go, I like.
|
|
|
Post by autofobe on May 11, 2022 18:45:58 GMT -5
Well congrats on the new project Dave,I’m sure it will keep you thinking. Will be watching to see what your take on it is.It’s a project that is close to my heart. Brad
|
|
|
Post by kawonda750 on Nov 8, 2022 16:37:13 GMT -5
Ok, so I had to get another set of cases and I had them vapour blasted today. Andy sold them to me and did not charge for the blasting because we are not sure if they are usable. He will refund the money if that is so. So, are these usable. They is some deterioration/ pitting around the cylinder holes . Will hitting the rust spots with fine emery cloth make them passable ? Input please
|
|
|
Post by kawonda750 on Nov 9, 2022 7:17:59 GMT -5
BTW, Highest recommendations for Andy at Vintage Kawasaki. Honesty and helpful integrity are a rare find these days.
|
|
|
Post by kawonda750 on Nov 10, 2022 7:23:11 GMT -5
No input ?
|
|
|
Post by zambia on Nov 10, 2022 7:39:42 GMT -5
I would run those Dave - I have seen guys build engines with that kind of pitting. Just be careful to inspect the surfaces where the crank seals sit, along with the bearings.. any deep pits there you might want to JB weld and sand. But the combustion areas are of no big concern
|
|
|
Post by kawonda750 on Nov 10, 2022 9:39:15 GMT -5
I was soo concerned with the top case which has turned out fine with some 800 grit that I didn't look at the bottom case. There is pitting there on the bearing surfaces. JB Weld ? Andy did say he has another set of cases. Maybe I should just exchange these.
|
|