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Replacement Forks
#1
Can anyone help me figure out what kind of front fork I need to replace a bent one? My bike is a GMC Denali Women's Road Bike (20"/50cm Frame) with a GMC Series 7000 steel.

I hit a car and now the front fork is bent. The bike shop couldn't fix it or find a replacement part.
  Reply
#2
Hi wj4;

We really need to know more information:
* what diameter headset?
* threaded or threadless?

Are you sure that the frame is not damaged?

Read this: http://www.bikeforums.net/showthread.php/736693-Another-Denali-lifetime-report-thread?highlight=borobike

Somewhere in there, I believe that he replaced the fork with one of these:
http://www.amazon.com/Nashbar-Carbon-Threaded-Road-Fork/dp/B004UMET2O/

And one of these will probably fit:
http://www.amazon.com/Dimension-Road-Threaded-200x50mm-Black/dp/B003UA4W4M/

To be sure, you need to remove and measure your current fork. In addition to threaded or threadless, 1" or 1 1/8"; you need to know the length of the tube, and if threaded, the length of the threading.
Nigel
  Reply
#3
OK I have some measurements, but they do not make much sense.

52-57 millimeter break reach
7 inch steer tube
22.2 stem diameter
700c something.

Does this info help?
  Reply
#4
yes Smile

and I looked at the picture here:
http://www.amazon.com/GMC-Denali-Womens-Road-Frame/dp/B001HN5I2E/

7" is approximately 178mm

I would get this one:
http://www.amazon.com/Sunlite-Threaded-Length-Chrome-Non-Canti/dp/B000AO9NTK/

It is actually a better fork than was originally on your bike.

it may need to be shortened, or you can just add some spacers if required:
http://www.amazon.com/Wheels-Manufacturing-1-Inch-Spacer-Silver/dp/B001CJVKNO/

You will also need to transfer the crown race from your old fork to the new fork.

I would also strongly recommend that you replace your brakes, at least the front brake if you are on a tight budget. Tektro R539 brakes will provide much better stopping performance than your current brakes.

If you are anywhere close to one of the regulars on this forum, we'd be happy to assist.
Nigel
  Reply
#5
Thank you!
Thank you!
  Reply
#6
HI!

Glad that I found you guys!

I'm having the same problem! Hit a pole avoiding a car, so my front fork is bent. Mine is GMC Denali 700c 20" Men's Road Bike, Medium (WALMART has 19" now: http://www.walmart.com/ip/GMC-Denali-700c-20-Men-s-Road-Bike-Medium/16203487.)

I'm wondering if it'll be the same spec if I were to replace with the ones nfmisso suggested?

Quote:I would get this one:
http://www.amazon.com/Sunlite-Threaded-Length-Chrome-Non-Canti/dp/B000AO9NTK/

It is actually a better fork than was originally on your bike.

it may need to be shortened, or you can just add some spacers if required:
http://www.amazon.com/Wheels-Manufacturing-1-Inch-Spacer-Silver/dp/B001CJVKNO/

Thank you!
  Reply
#7
(06-18-2014, 05:01 PM)bikersunion Wrote:  .....so my front fork is bent. Mine is GMC Denali 700c 20" Men's Road Bike, Medium .......
I'm wondering if it'll be the same spec if I were to replace with the ones nfmisso suggested? ....

Maybe; remove your current fork from the bike, and measure from the crown race to the end of the steerer tube. This is the steer tube length. Also measure from the crown race to the start of the threads. One the Sunlite this is 80mm (200-120). As long as the crown race to start of threads is less than or equal to your current fork, AND the steer tube length is greater than or equal to your current fork, AND we are talking about a 1" threaded fork - you're in business.
Nigel
  Reply
#8
Cool! I'll let you know once I find that out. Thanks nfmisso!
  Reply
#9
(06-24-2013, 07:48 PM)nfmisso Wrote:  Hi wj4; I also bent my fork running into the side of a car. As I am new to this, exactly what measurements do I need? I need to replace the Handlebars and fork of my GMC Denali road bike.

Thanks in advance for the help!
Temmon


We really need to know more information:
* what diameter headset?
* threaded or threadless?

Are you sure that the frame is not damaged?

Read this: http://www.bikeforums.net/showthread.php/736693-Another-Denali-lifetime-report-thread?highlight=borobike

Somewhere in there, I believe that he replaced the fork with one of these:
http://www.amazon.com/Nashbar-Carbon-Threaded-Road-Fork/dp/B004UMET2O/

And one of these will probably fit:
http://www.amazon.com/Dimension-Road-Threaded-200x50mm-Black/dp/B003UA4W4M/

To be sure, you need to remove and measure your current fork.  In addition to threaded or threadless, 1" or 1 1/8"; you need to know the length of the tube, and if threaded, the length of the threading.
  Reply


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