Hurky's gen3 CR250
Posted: May 12th, 2020, 2:57 am
Hi there, hope you're well.
We are in lockdown in Spain since more than 8 weeks (they are relaxing things now..) so I finally got some time to work at the project.
Motor was placed in the frame and I installed the MSV manifold and the DEP pipe. I removed the springs from the forks and installed them in the triple clamps to simulate full travel situations. I had a few used tires laying around and picked up the one with the narrowest height, a Mitas C19 in 90/90-21:
This is at full travel with the knobbie just about to touch the spring bracket, If I slightly turn the front tire to the right it is also almost touching the pipe elbow. Pretty close but should be fine like that, BUT, this is a used tire, a new one would have like 2mm larger knobbies and it would rub.
I am no crosser and I rarely bottom the suspensions on my bike but it can eventually happen on a bad jump , is a little interference like that acceptable or is that already dangerous like the tire could get rammed in the compressed position ? I really don't think so and it would just mark the plating on the pipe over time. Not much I could do about the elbow interference but I could easily move the spring braked so it does not touch anymore, maybe moving it to the front and using shorter springs ... Well, maybe it's even enough to just bend the braked a few degrees towards the front to make just a little more room...
What do you guys think ?
Cheers
We are in lockdown in Spain since more than 8 weeks (they are relaxing things now..) so I finally got some time to work at the project.
Motor was placed in the frame and I installed the MSV manifold and the DEP pipe. I removed the springs from the forks and installed them in the triple clamps to simulate full travel situations. I had a few used tires laying around and picked up the one with the narrowest height, a Mitas C19 in 90/90-21:
This is at full travel with the knobbie just about to touch the spring bracket, If I slightly turn the front tire to the right it is also almost touching the pipe elbow. Pretty close but should be fine like that, BUT, this is a used tire, a new one would have like 2mm larger knobbies and it would rub.
I am no crosser and I rarely bottom the suspensions on my bike but it can eventually happen on a bad jump , is a little interference like that acceptable or is that already dangerous like the tire could get rammed in the compressed position ? I really don't think so and it would just mark the plating on the pipe over time. Not much I could do about the elbow interference but I could easily move the spring braked so it does not touch anymore, maybe moving it to the front and using shorter springs ... Well, maybe it's even enough to just bend the braked a few degrees towards the front to make just a little more room...
What do you guys think ?
Cheers