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Post by Walms on Jul 24, 2013 18:51:49 GMT -5
I measured the swingarm tonight, it is approximately 95 - 100mm from center of wheel to the center of the sprocket.
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Post by drewski on Jul 24, 2013 19:10:01 GMT -5
I'm confused. Nothing new, I know, but what are you measuring? The CBR wheel/sprocket mounted on the swingarm?
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Post by drewski on Jul 24, 2013 19:18:12 GMT -5
I'm confused because you don't have a wheel/sprocket or an engine/countershaft sprocket that you're gonna use, to measure. Do you? It just seems that the wheel/sprocket measurement is still a bit of a "moving target".
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Post by Walms on Jul 24, 2013 20:53:52 GMT -5
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Post by Walms on Jul 24, 2013 21:23:27 GMT -5
As you can see, I use nothing but the finest measuring tools... The plastic chain guide and the mono shock mount which is centered in the frame.
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Post by Curtis on Jul 25, 2013 6:18:48 GMT -5
So what is that compared to the G3 ?
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Post by Walms on Jul 25, 2013 6:59:08 GMT -5
I would guess more for sure than the G3 but this build has nothing to do with that frame or motor bud, she's going to be all Honda.
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Post by drewski on Jul 25, 2013 9:18:25 GMT -5
O'k, that's what I thought you must be doing. Any idea how much more you could move that chain out before it reaches the frame? There must be some more available? On the KZ, I run a 5/8" offset countershaft sprocket. The chain is pushed out to within an 1/8 of an inch of touching the inside of the frame tube. We've been successful shaving the rear wheel sprocket carrier down to move the rear sprocket closer to the wheel as well. The KZ chain passes the 180 tire with about an 1/8" to spare. A 190 wouldn't work. She's tight, but it works! It took a bit of work, but it all fits and lines up nicely.
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Post by Walms on Jul 25, 2013 9:33:19 GMT -5
Unless my math is bad, I reckon being conservative it would be (90 x 2) - 20mm for chain. 160mm wide tire. The CBR250 rear tire is 140/60-17 The rims look identical to the 125's too.
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Post by drewski on Jul 25, 2013 12:39:24 GMT -5
Unless my math is bad, I reckon being conservative it would be (90 x 2) - 20mm for chain. 160mm wide tire. The CBR250 rear tire is 140/60-17 The rims look identical to the 125's too. That should work and leave a little wiggle room as well! I love that the manufacturers have used the same or VERY similar spoke pattern for their sportbike wheels. I'm already thinking about the next pase for the Mongrel and I believe a zx6r front end, wheel and brakes is on the list along with possibly a EN-6n, Ninja 650 or 300 rear wheel. It all depends on the maximum width I can comfortably fit in the FZ swingarm and still get the chain to pass. I already have a zx10r front rim on the KZ along with a zx6r on the rear. Identical match once they were painted! The zx6r rear is .5" narrower than the zx10r rear.
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Post by Walms on Jul 27, 2013 16:57:49 GMT -5
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Post by Walms on Jul 27, 2013 18:14:51 GMT -5
60 HP... That's pretty much insane eh!
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Post by drewski on Jul 29, 2013 16:16:53 GMT -5
60 HP... That's pretty much insane eh! Even a stock 52hp is gonna stress that frame some!! However, I do like the flat power delivery!! How about 30hp in a G3?? That'd be kinda nutz too.
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Post by Walms on Jul 29, 2013 17:07:24 GMT -5
Of course I'll know better after I model it up in cad and run it through FEA, but I bet the 125 frame is more rigid than the KH400 frame! It might be tough to keep the front end down for both of us though!
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Post by drewski on Jul 29, 2013 17:50:03 GMT -5
Of course I'll know better after I model it up in cad and run it through FEA, but I bet the 125 frame is more rigid than the KH400 frame! It might be tough to keep the front end down for both of us though! How many hp does the KH5/4 put out on the "seat-of-the-pants" dyno?? Best guess?
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