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Post by JA-Moo on Nov 11, 2012 14:42:24 GMT -5
How much longer is the swingarm than the stocker?
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Post by daffey1 on Nov 11, 2012 16:20:42 GMT -5
Good question The NSR swing arm measures 52 centimeters, or 20 1/2 inches from the center of the pivot bolt to the beginning of the axle slot. This will be the shortest point the axle can be from the pivot center. I don't know what the spec is for the stock swing arm, but would like to know. I think the 16 inch NSR front wheel and forks and this swing arm might help to put some more weight onto the front end, making the steering a little quicker and more predictable. What do you think?
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Post by Walms on Nov 11, 2012 16:52:17 GMT -5
My swinger is H1 and is about 18-1/2" To the front of the slot... I can't comment on how the smaller front wheel will effect anything?? Like you said, the longer wheel base might offset the smaller front wheel.
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Post by JA-Moo on Nov 11, 2012 17:51:15 GMT -5
If we want to get into this some more, what is the triple tree offset and accurate distance from the center of the front axle to the ground. And the measurement from the front axle to rear axle. (front of the slot)
And if so inclined, stick an angle gauge on the tubes for a rake angle. I can run the numbers on a computer program.
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Post by daffey1 on Nov 12, 2012 7:43:18 GMT -5
I thought of that but the bike is still on axle stands at the moment. It should also have the motor, complete, installed so that the suspension will be at the correct position as well I think But now that I know the swing arm is 2 inches longer than stock, I'm not so sure it will change the handling all that much. I think what I've gained in the front is off set by the longer swing arm At least I think the ride should be better than stock as the front and rear suspension is of a more modern style.
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Post by JA-Moo on Nov 12, 2012 11:17:00 GMT -5
When you get farther in, and want some numbers, let me know.
2" is lot as far as wheelbase goes, and one of big factors in why the S series handles so well, is the shorter wheelbase.
And if you are using later tripe trees, they usually have a lot less offset, increasing trail that hurts handling also.
The smaller wheel lessens the steering effort, but doesn't lighten the steering.
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Post by Walms on Nov 12, 2012 11:25:34 GMT -5
John, what could be done to the geometry to correct for a 2" longer swingarm? The reason I'm asking is I have a longer swingarm that I would like to try on my bike... I'm sure I'll try it as it is and just take note in how it changes the handling and shorten it if I don't like what I get but just wondering if there is an alternative??? The longer swinger would be nice for launches.
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Post by daffey1 on Nov 12, 2012 12:59:53 GMT -5
The top triple tree is the OEM triple tree and the lower one is off the NSR. The only thing I had to do was to bore out the upper triple tree fork holes to allow the slightly larger NSR forks. And you are correct about the "feel" of the front end being lighter with the 16 inch wheel. The biggest reason for the NSR wheels is that I Love those NSR wheels ;D
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Post by JA-Moo on Nov 12, 2012 14:21:28 GMT -5
John, what could be done to the geometry to correct for a 2" longer swingarm? The reason I'm asking is I have a longer swingarm that I would like to try on my bike... I'm sure I'll try it as it is and just take note in how it changes the handling and shorten it if I don't like what I get but just wondering if there is an alternative??? The longer swinger would be nice for launches. Longer wheelbase increases stability, so it slows directional changes, you also have to lean over farther for a turn as opposed to shorter swingers. The only way to really compensate, is to shorten it with triple trees with less offset, but you have to reduce rake to compensate, and forks start getting pretty vertical. And launches are really rider talent related. Back in the 90 with the fire breathing 500's and no traction control, they had 200 plus RWHP and very short wheelbases (52-53") I believe. You don't see them looping at the start. (and lots of fried clutches) Practice makes perfect. Learn to feed in the clutch, to just keep the front hovering. Get that down, and you will go fast. I'm sure you have seen RB's vids, it may be funny or cool to see his starts, but it is rather hamfisted dumping the clutch, all control is lost
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Post by Walms on Nov 12, 2012 14:25:18 GMT -5
So what does a fella do for 7k power wheelies in 1st? Clubman's helped but its never good to short shift into 2nd
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Post by daffey1 on Nov 12, 2012 16:16:10 GMT -5
When I used to drag race back in the '80s, we used a longer swing arm for just that purpose, keeping the front wheel down as well as better high speed, straight line control. On my street bike at the time, a KZ900 bored to 1261 running Nitrous, I used a 6 inch over swing arm. The bike would pick the front wheel about 4 inches and carry it right up to 4th if I didn't back off the throttle, and no dumping of the clutch, just power on the throttle. I didn't realize the NSR swing arm was 2 inches longer than the stock swinger, as this will make the bike a little harder to put into the turns, but the NSR swinger with mono shock should help stiffen up the chassis, maybe, I hope, as the beam design of the NSR should be more rigid than the stock swinger with round steel tube design.
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Post by JA-Moo on Nov 12, 2012 16:16:28 GMT -5
So what does a fella do for 7k power wheelies in 1st? Clubman's helped but its never good to short shift into 2nd There are two ways, a bit of dragging on the back brake, or like I do it, feather the clutch a bit. All you are really doing is limiting the power a bit. Which is faster than than trying to control a too high wheelie. Just practice........
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Post by Deleted on Nov 12, 2012 16:49:43 GMT -5
Looks like Walms did your HVAC piping. Nice Job Andrew. ;D ;D ;D ;D ;D ;D Rob
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Post by daffey1 on Nov 12, 2012 18:32:27 GMT -5
Nice one, but you should have seen it before the new furnace was put in about 13 years ago. It looked like something out of the Adams Family . But on a side note, the house was built in 1915 and I still have those great big , tall cast iron heaters. The cat loves them ;D
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Post by JA-Moo on Nov 12, 2012 19:35:17 GMT -5
When I used to drag race back in the '80s, we used a longer swing arm for just that purpose, keeping the front wheel down as well as better high speed, straight line control. On my street bike at the time, a KZ900 bored to 1261 running Nitrous, I used a 6 inch over swing arm. The bike would pick the front wheel about 4 inches and carry it right up to 4th if I didn't back off the throttle, and no dumping of the clutch, just power on the throttle. I didn't realize the NSR swing arm was 2 inches longer than the stock swinger, as this will make the bike a little harder to put into the turns, but the NSR swinger with mono shock should help stiffen up the chassis, maybe, I hope, as the beam design of the NSR should be more rigid than the stock swinger with round steel tube design. the stocker is good to 100 mph cornering, with the right suspension set up. Everyone likes a different "feel" in handling anyway, it may just suit you well....
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