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01-29-2019, 09:15 PM | #16 |
Join Date: Jun 2016
Location: Myrtle Creek Oregon
Posts: 873
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I’m liking that! When I did my Honda engine into a Suzuki frame I found I messed up on the front to rear sprocket alignment. Not the front to back, or side to side but the vertical. It messed with chain tensioning. When the rear suspension compressed, it put too much tension on the chain. And, on rebound, it made the chain super loose. It has something to do with centerline of both sprockets and the swingarm bolt. Just something to keep in mind as you proceed...
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1988 Kawasaki KLR250 1969 Honda Z50 silver tag 2002 Ford F-350 7.3 diesel 1975 Corvette 2017 Chevy Bolt “Throttle twisting geek” -LFN |
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01-29-2019, 11:25 PM | #17 | |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,109
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01-29-2019, 11:25 PM | #18 |
Join Date: Jun 2016
Location: Myrtle Creek Oregon
Posts: 873
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Yeah, I didn’t realize it on my mock-up so had big issues with chain too tight on compression and too loose on rebound. Finally put a home made spring loaded tensioner on it and seems to work fine. But, if I did it again I’d spend a lot more time messing with the perfect placement so the tension was tightest right at sprockets and swing arm centerline bolt being perfectly in line. Then it would be loose above and below the centerline. It’s complicated and I wasn’t paying attention. Got towed home the first trip out because of broken chain...
Heck, evidently my mad skills are good enough for a Chinese bike factory. Being towed by sister...
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1988 Kawasaki KLR250 1969 Honda Z50 silver tag 2002 Ford F-350 7.3 diesel 1975 Corvette 2017 Chevy Bolt “Throttle twisting geek” -LFN |
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01-30-2019, 12:05 PM | #19 | |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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My method with an unknown bike is to support the bike on a stand under the motor with the rear wheel off the floor, and then remove the rear shock. With the chain tension backed off, I place a scissor jack under the rear wheel and raise it until the center of the countershaft sprocket, the swingarm pivot bolt and the center of the rear sprocket are in a straight line. At this point, the chain should have very little slack, without being guitar-string tight. I tighten the adjusters at that setting. I then lower the rear wheel, reinstall the shock and place the bike on the floor. I note the amount of slack in the chain at rest and document it. If the slack is excessive at this point, I need to consider a spring-loaded tensioner. If it is not excessive, I call it a win.
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Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
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01-30-2019, 02:00 PM | #20 | |
Join Date: May 2018
Posts: 29
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01-30-2019, 02:14 PM | #21 |
Join Date: May 2018
Posts: 29
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Here a picture to show you guys why I need to lower the engine
Do you see it??? When I mount the engine like this, the chain will slice through my shift lever axle as a chainsaw Take a look at the original XR frame, the front sprocket lines up with the swingarm axle. Guess Mr. Honda didn't put the chainroller there without a reason.... |
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01-30-2019, 02:26 PM | #22 | |
Join Date: May 2018
Posts: 29
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Nike's slogan is a fact; Just do it! Everyone can be some kind of mechanic, it's just a matter of (sorry, but again TRIAL AND ERROR! But for your compliments! |
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01-30-2019, 09:09 PM | #23 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,109
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Fabrication as a whole is trial and error. Experienced fabricators are just guys that have made lots of the errors already lol.
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01-30-2019, 10:41 PM | #24 |
Join Date: Jun 2016
Location: Myrtle Creek Oregon
Posts: 873
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Not to belabor the point, but on both my XR600’s and my XR650L, the sprocket, swingarm pivot and rear sprocket centerline was with the suspensions compressed somewhat... I vaguely remember even using a ratcheting tiedown to compress it, then I’d adjust the chain. So, it was somewhat looser on compression and also on extension with the tightest spot in the middle somewhere.
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1988 Kawasaki KLR250 1969 Honda Z50 silver tag 2002 Ford F-350 7.3 diesel 1975 Corvette 2017 Chevy Bolt “Throttle twisting geek” -LFN |
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06-21-2019, 11:30 PM | #25 |
Join Date: Jun 2016
Location: Myrtle Creek Oregon
Posts: 873
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Any updates???
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1988 Kawasaki KLR250 1969 Honda Z50 silver tag 2002 Ford F-350 7.3 diesel 1975 Corvette 2017 Chevy Bolt “Throttle twisting geek” -LFN |
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06-22-2019, 09:01 AM | #26 |
Join Date: Nov 2018
Location: Stockport, Oh.
Posts: 1,442
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I put an XL 350 in my Suzuki 230 Quadsport and it was difficult to say the least. The valve cover was almost touching the frame above and I had to use a heat gun to mold the gas tank to make room for the head. The biggest pain was the exhaust, had to fab a new header to clear the frame in 2 places and still meet the muffler. But at the time the fastest 4 stroke quad was the Honda 250X and I could easily outrun them.
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06-22-2019, 09:31 AM | #27 |
Join Date: Jun 2016
Location: Myrtle Creek Oregon
Posts: 873
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Here’s my nowhere as sweet attempt... I put an Honda XR100 into a TC90 frame...
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1988 Kawasaki KLR250 1969 Honda Z50 silver tag 2002 Ford F-350 7.3 diesel 1975 Corvette 2017 Chevy Bolt “Throttle twisting geek” -LFN |
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06-22-2019, 10:17 PM | #28 | |
Join Date: Sep 2015
Location: East Central Hellinois
Posts: 1,344
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Quote:
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************************************************** *** " Time you enjoy wasting, is not wasted." - John Lennon “I predict future happiness for Americans, if they can prevent the government from wasting the labors of the people under the pretense of taking care of them.” ― Thomas Jefferson "If you don't know where you're going any road will take you there" ....George Harrison song |
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06-24-2019, 10:03 AM | #29 |
Join Date: Mar 2010
Location: Volcano, Ca
Posts: 7,112
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Nice way to play!
On the reverse of this project, I believe the older XR 200 motor should drop right in on those mount points. Member Fastdoc dropped a CB (OHC) Lifan motor right into his older XR200. Fit perfectly, as I recall.
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"Light a fire for a man, and you heat him for a day. Light a man on fire, and you heat him for the rest of his life." 2007 Suzuki DRZ400S (SM convert) 2009 Q Link XP 200 1967 BSA B25 250cc Starfire 2022 Royal Enfield Interceptor 650 2023 Royal Enfield Scram 411 1948 Royal Enfield Model G 350 |
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06-24-2019, 11:57 AM | #30 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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Doc did a nice job of that swap. In fact, there are only two years where a CB or CG will not fall into place on an XR200; 1984 and 1985. Those were the dark years with a dual OHC setup and they weren't as reliable.
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Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
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