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Post subject: RD350LC, with YPVS Front & Rear!!! Project
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GavinSA  Sunday Rider Joined: 08 Feb 2005 Total posts: 26 Location: South Africa |
Something I haven't seen anyone do! (to my knowledge)..
Just started restoring my LC and wanted to upgrade the front end to remove the head shake i got at close to 160kph. but think that my oversize tire was the problem.
Would Love to put something like the rgv250 or 400cc class front end on but they seem to be very difficult to find in SA. i did however find a YPVS with LC motor in which i was actually after for spares(crank).
 Looked the frame over and decided to try use the front end(better shocks) and rear(disk brakes) on my LC, and still keep it all RD.
Front end is a straight swap, back end is a different story.
 ... has this been done and are there any tips on the swap. i.e. strengthening
Sorry might be wrong forum but since i want to post images of the project i thought i would use The Photo Wall.
Since this is the second time i rebuild the bike i will start by showing the bike as i bought it 10 years back.
http://i320.photobucket.com/albums/nn331/Scottsman76/rd3500002.jpg
http://i320.photobucket.com/albums/nn331/Scottsman76/rd3500005.jpg
After Phase 1
http://i320.photobucket.com/albums/nn331/Scottsman76/rd3500006.jpg
http://i320.photobucket.com/albums/nn331/Scottsman76/rd3500008.jpg
http://i320.photobucket.com/albums/nn331/Scottsman76/rd3500007.jpg
Check the twin headlight... come off a CAT (Earth moving)... worked for me
Phase 2 Back to the drawing board
http://i320.photobucket.com/albums/nn331/Scottsman76/HPIM1398.jpg
http://i320.photobucket.com/albums/nn331/Scottsman76/HPIM1399.jpg
http://i320.photobucket.com/albums/nn331/Scottsman76/HPIM1410.jpg
YPVS front end in place and rear swingarm fitted but shock still with wire holding it in place.
only have photos of the engine casings near completion....
http://i320.photobucket.com/albums/nn331/Scottsman76/HPIM1401.jpg
http://i320.photobucket.com/albums/nn331/Scottsman76/HPIM1402.jpg
http://i320.photobucket.com/albums/nn331/Scottsman76/HPIM1403.jpg
Arms are tired now from polishing....
More to come as i move on..
any comments are welcome!!!
While we u wait for a update here is my RD125LC i sold for this green monster.... http://i320.photobucket.com/albums/nn331/Scottsman76/rd125.jpg
http://i320.photobucket.com/albums/nn331/Scottsman76/rd3500001.jpg
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Posted: Tue Jul 08, 2008 9:09 pm
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Billy All-gear Wheelie! Joined: 12 Oct 2007 Total posts: 1972 Location: Sweden arise! |
Looks like alot of mumbo jumbo to sort out.  But interesting nonetheless, not so very common to put ypvs wheels etc on. (even though i've seen it a couple of times)
I saved some of the pics because i'm thinking about doing the same, there's tons of ypvs parts here so it would be pretty easy.
How do the bits fit (rear end anyway) in the frame? Is it leveled or do you need to start chopping the swinger?
Anyway, good luck with everything, i'll follow the progress and i hope you to tell us what problems you came across during the building.  There's always something that's in the way or too big or too short etc, hehe..
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Posted: Wed Jul 09, 2008 8:54 am
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stn10 Suburban Commuter Joined: 02 Nov 2003 Total posts: 87 Location: middlesex |
Hi,
As you say, the front end slots straight in with no problems. At the rear, to fit a powervalve wheel into an Lc swingarm, you need to machine approx 12mm off the caliper carrier. I say approx, as I can't remember exactly how much to shave off. A bit of carefull measuring of the standard setup will give you the amount needed to remove. I did this years ago to an Rd400 that I owned. I mono'd the frame and used a standard Lc swingarm and fitted the valve wheel in. The only other issue you then have is how to hold the caliper carrier in place. Some people mount them upside down, but I think they look better the right way up. I found a bracket that fitted to the swingarm, and fixed it that way.
http://i118.photobucket.com/albums/o85/dusty039/various2005001.jpg
Hope that helps .
Dusty
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Posted: Wed Jul 09, 2008 3:09 pm
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BillyAll-gear Wheelie! Joined: 12 Oct 2007 Total posts: 1972 Location: Sweden arise! |
| stn10 wrote: |
Hi,
As you say, the front end slots straight in with no problems. At the rear, to fit a powervalve wheel into an Lc swingarm, you need to machine approx 12mm off the caliper carrier. I say approx, as I can't remember exactly how much to shave off. A bit of carefull measuring of the standard setup will give you the amount needed to remove. I did this years ago to an Rd400 that I owned. I mono'd the frame and used a standard Lc swingarm and fitted the valve wheel in. The only other issue you then have is how to hold the caliper carrier in place. Some people mount them upside down, but I think they look better the right way up. I found a bracket that fitted to the swingarm, and fixed it that way.
http://i118.photobucket.com/albums/o85/dusty039/various2005001.jpg
Hope that helps .
Dusty |
Is the caliper carrier coming from a valvie or another bike? I can't remember seing it but maybe they're hard to see?
Nice ride there btw.  Quite oldish style but nice anyway.
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Posted: Wed Jul 09, 2008 5:04 pm
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GavinSASunday Rider Joined: 08 Feb 2005 Total posts: 26 Location: South Africa |
Correct front end just bolts on, including the shocks and yokes..
Dusty u mention that the caliper carrier needs to be machined off, This is true if you were to use the LC swinger. in my case i will be using the 31K arm so wont have the problem with the securing the carrier.
The rear swinger slots in after machining I think it was 3mm off either side and 6mm off the long bush , But first remove the bushes on either end. Took me 20 min. The difficult bit is mounting the shock as it works totally different. I have a donor 31K frame so i could just cut out the pieces needed. alinging the sprockets is the next problem.
Billy if you want i could take photos of where to machine the swinger, just let me know.
I suppose using the LC arm would be easier but the 31K arm looks more modern to me.  will keep both options open for now..
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Posted: Wed Jul 09, 2008 5:13 pm
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BillyAll-gear Wheelie! Joined: 12 Oct 2007 Total posts: 1972 Location: Sweden arise! |
| GavinSA wrote: |
Billy if you want i could take photos of where to machine the swinger, just let me know.
I suppose using the LC arm would be easier but the 31K arm looks more modern to me. will keep both options open for now.. |
Pics would be very interesting!  I think you shall use the 31k swinger, as you say it looks more modern, and i guess it's stronger when it comes to horisontal forces then the lc swinger?
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Posted: Wed Jul 09, 2008 5:32 pm
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GavinSASunday Rider Joined: 08 Feb 2005 Total posts: 26 Location: South Africa |
Here you go, since i have put the bushes back in and put the swinger on, it was easier to just make this diagram to explain a bit better.
http://i320.photobucket.com/albums/nn331/Scottsman76/Swinger-1.jpg
Please do your own measurements first and not just use what i have mentioned. Can't remember if it was 2.5 or 3mm. make sure that u leave bush no5 1mm longer then the swinger with 2 bushes no7 inserted to allow it to swivel.
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Posted: Wed Jul 09, 2008 6:26 pm
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BillyAll-gear Wheelie! Joined: 12 Oct 2007 Total posts: 1972 Location: Sweden arise! |
| GavinSA wrote: |
Here you go, since i have put the bushes back in and put the swinger on, it was easier to just make this diagram to explain a bit better.
http://i320.photobucket.com/albums/nn331/Scottsman76/Swinger-1.jpg
Please do your own measurements first and not just use what i have mentioned. Can't remember if it was 2.5 or 3mm. make sure that u leave bush no5 1mm longer then the swinger with 2 bushes no7 inserted to allow it to swivel. |
Aye thank's alot! Guess one's just gotta use common sense when doing it then, but now i know the basic thing thanks.
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Posted: Wed Jul 09, 2008 6:49 pm
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