|
New here, need some help with measurements /advice.
First post, and great site for a gear head like me. I have been looking at the Super Hawk for about 20 years and finally purchased one after owning about 2 dozen bikes, including 3 RC51’s and my body is too old to ride an RC ever again. I decided to go out on a limb and purchase a rebuilt, which I have never done before, it seemed legitimate that it’s a very low mile bike that was rebuilt due to the bike being speared in the side by the fork lift operator, still brand new in the crate in 2002. The dealership owner gave the bike to his son and said they decided to rebuild it and used a 1999 frame, they kept it in the family and was sparingly ridden due to having so many bikes to ride all the time. He said it got ridden a couple times a year briefly and stored in a climate controlled garage. I suppose they didn’t think it was worth selling as salvaged until later in life, which they were right…It had 2021 miles when I picked it up a couple weeks ago... The tires are original and still look to have around 70% tread, manufactured the 35th week of 2001.
Heres the weird part, I need to figure out where else to measure to make sure the main frame is straight… I just noticed the rear subframe is sitting crooked by around 1 degree compared to the top of the gas tank using my Iphone angle finder near the front of the subframe where it bolts to the plastic. When I bolted up new slip on mufflers, I noticed the original pipes were not sitting evenly space in relation to the rear tire and were crooked on the rear mounts at the foot pegs. I need a measurement between the tire edge and inner exhaust mount hole on the foot pegs. Mine are not equal. Hopefully it’s just the subframe, or I am buying another mainframe and starting over… |
Welcome,
Doesn't seem likely that they would have used a bent frame, but anything is possible. If it's the subframe, and you can't straighten it, you will have to search the use market as new ones are no longer available. I'll try and get some measurements from mine. |
I don't see a way to get a repeatable, or any measurement that would be useful.
|
Originally Posted by xeris
(Post 415903)
I don't see a way to get a repeatable, or any measurement, that would be useful.
I just used a tape measure, and it was almost a straight shot across from the rear tire edge to the hanger mount on the exhaust below the foot peg on each side. on a sidenote, I spent a couple hours marking and measuring the frame. It is actually straight front to back. The right rear top mount on the tail section was slightly bent downward. Another odd thing I noted was that the fuel tank front mount is actually welded off-center so it doesn’t line up perfectly with the front center of the tank. |
Ok, I understand now. My measurements most likely won't help. I no longer have the exhaust hanger hardware attached to the foot peg casting. I have an Akrapovic full system and it doesn't use the stock hangers at that point.
|
Anyone else willing to go measure the width on each side, between the rear tire edge of and muffler mount hole on the inside edge of the foot pegs?
|
You're measuring in the horizontal plane and you mean the muffler mount hole in the foot peg / muffler hanger, correct? And, we're measuring to the inside surface of the hanger, I assume.
|
Originally Posted by VTR1000F
(Post 415909)
You're measuring in the horizontal plane and you mean the muffler mount hole in the foot peg / muffler hanger, correct? And, we're measuring to the inside surface of the hanger, I assume.
https://cimg9.ibsrv.net/gimg/www.sup...37a6883c7.jpeg https://cimg0.ibsrv.net/gimg/www.sup...1d1076de0.jpeg |
So, how confident are you that your rear wheel is perfectly aligned? What method did you use to adjust that last time you had to? I personally wouldn't judge what you are wanting measured going from the tire. I know I know, you're mostly at the top of the wheel... still. A messed up swingarm could produce your result. :idea:
That being said, your tape is definitely showing a huge discrepancy. I personally would probably remove the subframe and sit it on a known flat surface for inspection. I think the fender plastic would probably interfere with accurate measurements on the bike. |
Originally Posted by Wolverine
(Post 415912)
So, how confident are you that your rear wheel is perfectly aligned? What method did you use to adjust that last time you had to? I personally wouldn't judge what you are wanting measured going from the tire. I know I know, you're mostly at the top of the wheel... still. A messed up swingarm could produce your result. :idea:
That being said, your tape is definitely showing a huge discrepancy. I personally would probably remove the subframe and sit it on a known flat surface for inspection. I think the fender plastic would probably interfere with accurate measurements on the bike. I have yet to see anyone measure these hangar measurements to compare what I posted in the pics. I spent the entire day going through the bike, I did the tire alignment, string method. Swing arm is straight, tire is perpendicular with the frame/Subframe is straight, but the plastic fender was off about 1/2 inch, it corrected by adjusting at the rear mount bolts. The only thing that didn’t line up was the exhaust. I went back and loosened the headers, they were off to the left. I pulled/bent the right footpeg/exhaust mount out about 5/8” and it looked too far angled compared to the left. I re-mounted the new slip-on’s, and massaged the pipes and hangers until I decided to bend the right hangar back in a bit. Everything is finally lined up, despite the exhaust hanger spacing not being equal. I fired up the bike and now have a carb problem after re-jetted to “8541HAWK” carb specs. It’s sounding like a pulsing /hissing vacuum leak coming from the right/front side of the motor and it won’t idle without choke once it’s warmed up. I am assuming a simple hose I somehow missed, or possibly the diaphragm got twisted on re-assembly. Low speed screws set at 2 and 2-1/8. Altitude is 1,050 feet. |
Sorry, gustman, but I forgot I don't have stock hangers / pipes on the bike right now. I have high mounts, so I'm not sure if I can even get a reliable comparative measurement for you relative to the tire. I've been busy lately and now I'm out of town for a few days. I think Wolverine makes a valid point, so it may serve you better trying to get a measurement relative to the centerline of the bike if you can figure out how to define that. I'm not even confident these things are aligned to a centerline rather than the center of mass or something.
|
| All times are GMT -7. The time now is 08:49 PM. |
© 2026 MH Sub I, LLC dba Internet Brands