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Post by donkeychomp on Jul 14, 2021 21:50:39 GMT 1
Haha! Top man! Might be one more thing to cart downstairs and there's no way I can do that on my own!
Alex
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Post by dusty350 on Jul 15, 2021 8:06:51 GMT 1
No worries mate. I've pm'd you Dusty
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Post by donkeychomp on Jul 15, 2021 21:31:15 GMT 1
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Post by JonW on Jul 16, 2021 1:48:25 GMT 1
Great that you will have some extra space Alex, I always wince when I see your garage and it makes me think that i moan about my space issues and really compared to you I dont have any lol
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Post by donkeychomp on Jul 16, 2021 21:44:29 GMT 1
Haha! After moving all that stuff into the workshop I now have bugger all space in there...not a problem as the LC is coming inside with me. On a plus point, when I do that I will have enough space to also work on the Popsicle. (yes, I still have that bike lol)
Alex
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Post by donkeychomp on Jul 27, 2021 20:47:28 GMT 1
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Post by dusty350 on Jul 28, 2021 7:42:09 GMT 1
It's great you've got the impetus back with this build mate - it will make for a nice hybrid for sure For those following, the swingarm is gonna need some work. Top hat spacers will be needed for it to fit the Lc frame, plus the existing linkage mounts will serve no purpose for the cantilever shock set up, so would ideally be removed and tidied up. Once Alex has the measurement from a standard Lc for rear ride height, he can chock up the rear to get close to standard - although he does want to raise the rear end a tad. Too much, and the bike will tip into corners and handling will be compromised. I think the front end may be lower than standard too, so it's already going to steer more quickly than standard. Once the swingarm sits right, Alex can work out where the bottom shock eye sits, and then a CAD template can be drawn up to marry the shock to the swingarm. The swingarm is not flat where the brackets need to go, so the bracket on one side will be taller than the other to line up, so not totally straightforward ! Using a standard length shock is preferable, but the bracket may possibly have more than 1 mounting hole, for adjustment. Tabs for an Lc clock bracket will be added to the top yoke, and the bottom yoke needs lock stops, but again, the yoke is shaped (angled) so not a simple fix. Chain run looks like it's gonna work out, which is a bonus !! Looking forward to your progress mate Dusty
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Post by donkeychomp on Jul 28, 2021 21:26:51 GMT 1
Cheers Dusty. Your help (as always) is most appreciated. Can't wait to get this all welded up as then it's just a straight forward build! Well, sort of lol.
Alex
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Post by donkeychomp on Jul 29, 2021 21:17:31 GMT 1
Mouse supplied the ride height info and I am a whopping 90mm too high! So tomorrow I'll whip out the tape measure and see what she looks like at stock height and then see how much of a lift I can get away with.
Alex
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Post by sidney81 on Jul 29, 2021 21:49:56 GMT 1
Mouse supplied the ride height info and I am a whopping 90mm too high! So tomorrow I'll whip out the tape measure and see what she looks like at stock height and then see how much of a lift I can get away with. Alex hi bud can I ask what the stock ride height is ? And where you measured from ? Thanks Chris
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Post by donkeychomp on Jul 29, 2021 22:27:16 GMT 1
Tab up a little and it's pic #3. From the centre of the lower grab rail bolt to the floor. And that is 740mm.
Alex
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Post by donkeychomp on Aug 10, 2021 20:53:31 GMT 1
So. After another visit from Dusty we have (kinda) reached a conclusion that the Mito swingarm is not a very good idea. The sheer amount of fabrication that's needed is crazy and the cost would break the bank. That leaves me with a quandary. I need a slightly longer swingarm, as I prefer the stance, and I want to use a 3 spoke 17" rear wheel to match the Mito's front one. Anyone got any ideas? If possible keeping the Mito rear wheel and brake set up would an ideal but I know that's doubtful.
Alex
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Post by dusty350 on Aug 11, 2021 7:23:38 GMT 1
Next thing to do is remove the Mito wheel and caliper carrier, spacers etc, and see what could be reduced, width wise ie. can the carrier be machined down, could the sprocket hub be milled back if needed. Measure inside the swingarm to see what you were working with, and then you will have an idea of what may work as you will have some dimensions. I think the Lc swingarm is 200mm internally across the chain adjusters - would be good to know what the Mito is ? Dusty
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Post by reedpete on Aug 11, 2021 12:03:15 GMT 1
Alex, I’m glad you are figuring this out for yourself otherwise it’s never that easy to be a peace with the solution, but basically although aftermarket arms and other parts for that matter can seem eye wateringly expensive...the moment you start getting into full custom fab the costs to get to end result go to another level again. Perhaps take a look back over all the tried and tested options and pick the one that’s closest to your vision. Might also be worth reviewing if function can be compromised a little over form. Yes, steel is heavy but much easier to fabricate with. As for wheels, same really applies, but don’t rule out using a 17 or 18 on the back.
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Post by sidney81 on Aug 11, 2021 16:26:35 GMT 1
What's the problem ? Is making the linkage connection? .Chris
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Post by charles13 on Aug 11, 2021 17:17:53 GMT 1
While I am relatively new to the rd/rz scene I do know my geometry; I would not put so much faith into rear seat height on these conversions instead get a good angle gauge (magnetic is nice), measure the angle of the forks (26*) is a good starting point, then the swingarm (12-15*) is what your shooting for (keep in mind the chain run). Finally you want to get a cheap laser and a plumb bomb to keep track of the trail (3-4”); fix the laser onto the steering stem side along the center axis so that it projects onto the ground beside the wheel then hang the plumb bomb through the axle centerline and you can measure the trail, if your fork and swingarm angles are optimum and the trail is outside the parameters you need different triple clamp offset to correct it. Hopefully that provides a little insight, I have used this method for years and it’s never let me down.
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Post by donkeychomp on Aug 11, 2021 21:16:13 GMT 1
What's the problem ? Is making the linkage connection? .Chris Yes Chris. That's it in a nutshell. There's just so much to do and it's all ally so requires some trick and no doubt pricy welding! Chain run seems bang on so that's not an issue. I had another look today and at the Mito I have in the workshop/furniture storage facility and I'm wondering if I can use the Mito linkage in some way. Maybe not but they are cheap so it might be worth a punt. I really would prefer to use the Mito swinger but...a rethink seems on the cards here. Alex
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Post by donkeychomp on Aug 11, 2021 21:17:22 GMT 1
Next thing to do is remove the Mito wheel and caliper carrier, spacers etc, and see what could be reduced, width wise ie. can the carrier be machined down, could the sprocket hub be milled back if needed. Measure inside the swingarm to see what you were working with, and then you will have an idea of what may work as you will have some dimensions. I think the Lc swingarm is 200mm internally across the chain adjusters - would be good to know what the Mito is ? Dusty I shall get my ruler out!! Alex
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Post by donkeychomp on Aug 11, 2021 21:19:51 GMT 1
While I am relatively new to the rd/rz scene I do know my geometry; I would not put so much faith into rear seat height on these conversions instead get a good angle gauge (magnetic is nice), measure the angle of the forks (26*) is a good starting point, then the swingarm (12-15*) is what your shooting for (keep in mind the chain run). Finally you want to get a cheap laser and a plumb bomb to keep track of the trail (3-4”); fix the laser onto the steering stem side along the center axis so that it projects onto the ground beside the wheel then hang the plumb bomb through the axle centerline and you can measure the trail, if your fork and swingarm angles are optimum and the trail is outside the parameters you need different triple clamp offset to correct it. Hopefully that provides a little insight, I have used this method for years and it’s never let me down. Hi Charles It's not the geometry per se. We've figured that out...well, sort of lol. It's the sheer amount of work and the cost that entails to fabricate a suitable rear shock mounting that will work with the LC shock. Alex
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Post by sidney81 on Aug 11, 2021 22:06:13 GMT 1
What's the problem ? Is making the linkage connection? .Chris Yes Chris. That's it in a nutshell. There's just so much to do and it's all ally so requires some trick and no doubt pricy welding! Chain run seems bang on so that's not an issue. I had another look today and at the Mito I have in the workshop/furniture storage facility and I'm wondering if I can use the Mito linkage in some way. Maybe not but they are cheap so it might be worth a punt. I really would prefer to use the Mito swinger but...a rethink seems on the cards here. Alex That's a shame , well if you do decide to use it feel free to give me a shout I can help with the welding 👍
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Post by donkeychomp on Aug 11, 2021 22:16:08 GMT 1
You know what? I think I will mate. Let me have another look tomorrow at it and I'll get back to you. Looking at what you did to your swingarm I think something along the same lines is needed.
Alex
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Post by sidney81 on Aug 11, 2021 22:17:23 GMT 1
You know what? I think I will mate. Let me have another look tomorrow at it and I'll get back to you. Looking at what you did to your swingarm I think something along the same lines is needed. Alex Cool 👍no problems ☺️
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Post by headcoats on Aug 11, 2021 22:30:57 GMT 1
NK Sidney
It's gonna happen !
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Post by Tobyjugs on Aug 12, 2021 18:19:33 GMT 1
Hi Alex i think you should pay a little attention to what charles13 has suggested. I know Kees's LC is at least 30mm higher than standard to help with handling and ground clearance. I would pay more attention to the geometry than trying to make it "Look right"
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Post by donkeychomp on Aug 12, 2021 21:50:00 GMT 1
Yes you are right and yes I have. I think my term 'look right' doesn't, err, look right. I need to keep the geometry as close to a stock LC as possible and I think I'm on the right track. But I confess to being no expert on these matters, but I so know some folk who are (that includes Charles lol and I have listened to what he has said). But for now it looks like the Mito swinger might be a goer. And that has cheered me up no end!
Alex
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Post by Tobyjugs on Aug 12, 2021 22:25:53 GMT 1
I'm no expert as well Alex, but i have learnt some basic things since being a member here. If you have the help from Sidney your onto a winner. You could set the frame up nicely with the Mito parts and help of the members on here.
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Post by donkeychomp on Aug 12, 2021 22:44:02 GMT 1
Mate it certainly looks like it. I've Googled Yamaha RDLC/Mito hybrid and all I see are the YPVS engine conversions in a Mito chassis so I think this might be a first. And probably for a very good reason, ie it's a bugger to do. But I'm so glad Chris has stepped in. I got my mojo back and then felt it wane a little...and now it's back again!
Alex
ps and a big thanks to all of you who've offered help and advice. Without you lot none of this would be happening.
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Post by 4l04ever on Aug 13, 2021 8:29:25 GMT 1
Make some CAD templates (Cardboard Aided Design) for the mounting brackets and away you go :-)
Have you got a rear shock? I have a few scruffy ones spare if you need one.
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Post by Tobyjugs on Aug 13, 2021 9:39:01 GMT 1
Another suggestion might be to look for a shock which has a remote reseoir. Your not limited to an LC shock as the fitting will be made to suit the shock and swing arm. Probably cheaper if it hasn't got "for Yamaha RD LC" written in the description.
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Post by donkeychomp on Aug 13, 2021 21:43:42 GMT 1
I do have a standard LC shock and would like to use the same dimensions so I'll probably get a YSS one. Plus you can adjust those a little bit. In fact the new parts to buy list is a tad on the pricy side but what the hell. I had set aside some money for a new car as I feared my little rust bucket would fail the MOT...seeing she passed those funds are now going into the LC!
Alex
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