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#91
General Chatter / Re: RIP Pat Hennen
Last post by Gil Gallad - April 14, 2024, 08:45:05 AMif he hadn't crashed at the t.t. in 1978 who knows what he could have gone on to win? top man and top racer 
cheers, gil.
cheers, gil.
#92
Turning Wrenches / Re: Fork Clunk at Extension RD...
Last post by 1976RD400C - April 14, 2024, 07:58:54 AMQuote from: Jspooner on April 13, 2024, 02:42:46 PMIt's not the dampening rod. Can't really do anything wrong there. What I'm talking about are actually at the bottom of the tube on the inside. If you pull it all apart and remove the dampening rod and look at the bottom of the tube you'll see s9me stuff held in with come c-clips. That's what I'm talking about. Normally you leave that stuff in tact when working on the forks but when you replace tubes you have to remove then and reinstall them in the new tubes.
I think it's called the top out valve. It causes real strong damping the last 1/4" of topping out. Remove the snap ring on the inside of the fork tube and pull the piston/bushing out and it should be in there, aluminum valve and spring.
#93
Turning Wrenches / Re: Fork Clunk at Extension RD...
Last post by STLMike - April 14, 2024, 12:58:54 AMI cut the 1.5" off mine and just reassembled. There was no way the spacers were going back in. I also emailed John to be sure.
#94
Turning Wrenches / Re: Fork Clunk at Extension RD...
Last post by m in sc - April 14, 2024, 12:28:41 AM1" extension, or less, sounds about right coming out of the top. lack of sag on ft end would be a big indicator of an issue. 4" is WAY too much to have to compress to put the cap back on.
#95
Haus of Projects / Re: 72 R5, round 2.
Last post by m in sc - April 14, 2024, 12:26:39 AMthanks. yes, it was just under 4 weeks.
#96
Turning Wrenches / Re: Fork Clunk at Extension RD...
Last post by Hemi - April 14, 2024, 12:21:25 AMSTLMike,
That's very interesting.
Let me know how that works out for you when you ride your bike after reassembly.
I've been talking to John at Economy Cycle. He sold me the progressive springs.
He has 2 personal RD400's, one with progressives and the other with stiffer springs for the track.
He hasn't mentioned cutting the springs, and I believe the spacer is supposed to be removed with progressives, leaving about an inch of spring above the tube with forks extended prior to replacing the caps.
Before I switched to progressives, the forks had the spacers and stock springs, and had the same problem, a nasty clunk at full extension.
Hemi
That's very interesting.
Let me know how that works out for you when you ride your bike after reassembly.
I've been talking to John at Economy Cycle. He sold me the progressive springs.
He has 2 personal RD400's, one with progressives and the other with stiffer springs for the track.
He hasn't mentioned cutting the springs, and I believe the spacer is supposed to be removed with progressives, leaving about an inch of spring above the tube with forks extended prior to replacing the caps.
Before I switched to progressives, the forks had the spacers and stock springs, and had the same problem, a nasty clunk at full extension.
Hemi
#97
Haus of Projects / Re: 72 R5, round 2.
Last post by RustyRD - April 13, 2024, 10:13:22 PMThe seat look great, the whole bike looks great, is that the Texavina seat? How long did it take to arrive from Vietnam ? I think that's where they ship from.
#98
Turning Wrenches / Re: Fork Clunk at Extension RD...
Last post by STLMike - April 13, 2024, 10:11:05 PMHemi, I'm reassembling my fork tubes right now and i'm also using the progressive springs. On both Economy and HVC site it says to cut the springs 1.5". I have cut mine.
However, there is no mention of not using the spacers. With the top fork tube fully compressed into the lower tube, I have about 4" of spring sticking out. With the top fork tube fully extended, my spring is not exposed at all. In fact, it's about 1.5" down inside the tube.
However, there is no mention of not using the spacers. With the top fork tube fully compressed into the lower tube, I have about 4" of spring sticking out. With the top fork tube fully extended, my spring is not exposed at all. In fact, it's about 1.5" down inside the tube.
#99
Haus of Projects / Re: RD Monoshock ninja susp. s...
Last post by RustyRD - April 13, 2024, 09:59:44 PMCompletely understand balance of time. Thanks for encouraging words, I have discovered that the kz1000 and kz650 triple clamps will work with my front end swap. Either one will produce more trail than the ninja 250 triple tree. This can be helpful in making it more stable at speed.
#100
Turning Wrenches / Re: Fork Clunk at Extension RD...
Last post by Jspooner - April 13, 2024, 02:52:10 PMIn all honesty, I thought it was all of the obvious stuff too. Before you remove that stuff see if you can fine a diagram that shows it. If I remember right it can go together a few different ways as far as the actual order of the parts and which way they are flipped, but only one way is correct.