November 22nd, 2019, 11:16 AM | #1 |
ninjette.org member
Name: Jason
Location: Orlando
Join Date: Sep 2019 Motorcycle(s): 2008 Ninja 250 Posts: 17
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Approximate width between the 2 frame bars where the tail light sits
Hey guys
I have a 2008 that the po tried to convert into a streetfighter. Iam attempting to get it back to original. They cut the frame just past the battery box area. I have fabricated the side frame posts - however Iam trying to get the approx width where the 2 cross backers connect on the top. I will try to posts pictures so you can see what I currently have. Thx in advance |
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November 22nd, 2019, 11:16 AM | #2 |
ninjette.org member
Name: Jason
Location: Orlando
Join Date: Sep 2019 Motorcycle(s): 2008 Ninja 250 Posts: 17
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* cross brackets. Not backers. Sorry
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November 22nd, 2019, 11:40 AM | #3 |
ninjette.org member
Name: Jason
Location: Orlando
Join Date: Sep 2019 Motorcycle(s): 2008 Ninja 250 Posts: 17
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I posted a couple of photos in my album. Having troubles getting them over here....sorry
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November 23rd, 2019, 04:30 PM | #4 | |
ninjette.org certified postwhore
Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot.
MOTY - 2018, MOTM - Nov '17
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Quote:
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November 23rd, 2019, 04:34 PM | #5 |
ninjette.org certified postwhore
Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot.
MOTY - 2018, MOTM - Nov '17
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I've done this restoration many, many times; reverting hacked-up frames from aborted projects. You're doing it in wrong direction and will end up with nothing lining up. Then you'll have to chop off your work and start over again. You need to start from end-result first, then work backwards.
Very first step is to locate tail-light bracket in 3D-space in final location so it will line up with bodywork and fender when everything's completed. You'll need jig to hold tail-light in place while you build everything around it. Luckily, you can use new OEM fender as jig. It has most-important measurement of 4 holes to locate tail-light bracket. Be sure to add couple washers to simulate bodywork and firmly bolt fender in place so it's rigidly attached. Then use straight-edge strapped to horizontal frame-tube to run its top edge as reference to back. Adjust rear of fender & tail-light bracket vertically so it's in final location. Can use sticks of wood shoved between tyre and fender to maintain vertical alignment. Then make those little triangular brackets that hold tail-light bracket and fender in place. Bolt all pieces together. When that's done... THEN you fit frame-tubing in place. Don't forget 13.5-degree bend of tubing from frame to tail. Don't attach new tubing to frame with just butt-welding, it'll break off over time due to vibration and load. You'll want to insert 40mm-long sleeve with same OD as ID of cut-off frame-tubing. Drill hole about 10mm from end of frame-tubing so you can tack-weld sleeve in place. Then you'll really have strong joint with re-attached tubing. |
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November 23rd, 2019, 04:40 PM | #6 |
ninjette.org certified postwhore
Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot.
MOTY - 2018, MOTM - Nov '17
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With numbers of Ninja 250s being destroyed to do these projects, I'm sure you can get cut-off rear-end to weld back on your bike. Place an ad here, in other forums (racers), and on-line everywhere. I bet someone's got that piece lurking in back of garage somewhere.
EDIT: found one! Here, buy this frame. I'm sure he'll take $50-70 for frame and $10 for fender. I'll run up there to get it. Chop off rear-end and send it to you! Someone else can have forks/triples, rear-swingarm and brakes for pre-gen 17" wheel conversion! |
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