Finding a replacement fork ...

[fmechini]

Greetings!

While locked up to a sign's pole in NYC, my son's Bianchi was run over by a car. Off course, the driver left.

So, I have been trying to find a substitute, without much luck. At first I got a replacement from SUNLITE but the blades were too long.

I found one at JENSONUSA but they are backordered: here is the fork in question http://www.jensonusa.com/Dimension-Hi-Ten-Fork part FK300B02

I would much appreciate if you could address me to some other source ...

What I am looking for ...

Steel fork
Steerer tube length: 250 mm (9-14/16") 40 mm threading
Steerer tube diameter: 25 mm (1")
Steerer crown to CL of axle: 387mm (+/-)
Tire size is 27" (as marked on tube)

Thank you in advance!

Fred

[nfmisso]

Fred;

Which Sunlite did not work, and what do you mean "the blades were too long".

You have not provided enough information to assist.

[fmechini]

[attachment=4690]Thank you for your reply.
The Sunlite that didn't work was Sunlite Fork Econo 27X1-1/4 22.2X250X120mm
The forks, from bottom of stem to cl of bike hub was too long.

you can see from the attached pic ...

Thanks again!

[nfmisso]

I think that you would have a closer match with a 700c road fork; one of these:

http://www.amazon.com/Ramiko-Summit-100mm-Chromoly-Chrome/dp/B00643L1WI/

http://www.amazon.com/Sunlite-Replacement-Bicycle-Fork-Uni-Crown/dp/B002I7IC6C/

http://www.amazon.com/Sunlite-Threaded-Length-Chrome-Non-Canti/dp/B000AO9NTU/

does the bike have fenders?
what size tires are on the bike? (look for something like 28-630 on the side wall of the tire)

[fmechini]

(11-17-2013, 09:04 PM)nfmisso Wrote:  I think that you would have a closer match with a 700c road fork; one of these:

http://www.amazon.com/Ramiko-Summit-100mm-Chromoly-Chrome/dp/B00643L1WI/

http://www.amazon.com/Sunlite-Replacement-Bicycle-Fork-Uni-Crown/dp/B002I7IC6C/

http://www.amazon.com/Sunlite-Threaded-Length-Chrome-Non-Canti/dp/B000AO9NTU/

does the bike have fenders?
what size tires are on the bike? (look for something like 28-630 on the side wall of the tire)

Tank you for the reply.
It is a 27" tire.

[nfmisso]

(11-17-2013, 09:38 PM)fmechini Wrote:  ......
It is a 27" tire.

The above is incomplete and insufficient information to assist you.

Look on the side wall of the tire for numbers like "28-630" or similar, and let us know EXACTLY what it says.

I have 27" tires which are marked: 28-630, 32-630 and 37-630 - the answer for the fork depends. The 28, 32, 37 represent the width of the tire, and are directly related to the overall diameter.

[fmechini]

(11-18-2013, 10:45 AM)nfmisso Wrote:  

(11-17-2013, 09:38 PM)fmechini Wrote:  ......
It is a 27" tire.

The above is incomplete and insufficient information to assist you.

Look on the side wall of the tire for numbers like "28-630" or similar, and let us know EXACTLY what it says.

I have 27" tires which are marked: 28-630, 32-630 and 37-630 - the answer for the fork depends. The 28, 32, 37 represent the width of the tire, and are directly related to the overall diameter.

Very interesting ...
The writing on the wall of the tire is :

28-630 (27x1-1/8")

Thank you for the reply ...

[nfmisso]

One of the 700c forks that I suggested above will work better for you than the 27" fork you purchased. They will be slight shorter, and a better match to your application.

A 28-630 tire is 8mm less diameter (4mm less radius) than a 32-630 tire; and 18mm less diameter than a 37-630. The 27" Sunlite fork is intended to clear a 37-630 tire with a fender between the tire and the fork.

Your application appears to be a close fitting racing style, with no fender clearance. 700c is 622mm (the side wall of the tire will be marked something like 28-622), and are 8mm smaller diameter than a 27" (630mm) tire.

The 622 and 630 refer to the BSD (Bead Seat Diameter) of the rim, which is approximately the inner diameter of the unmounted tire. The 700c and 27" are labels and practically meaningless.

[fmechini]

(11-18-2013, 04:02 PM)nfmisso Wrote:  One of the 700c forks that I suggested above will work better for you than the 27" fork you purchased. They will be slight shorter, and a better match to your application.

A 28-630 tire is 8mm less diameter (4mm less radius) than a 32-630 tire; and 18mm less diameter than a 37-630. The 27" Sunlite fork is intended to clear a 37-630 tire with a fender between the tire and the fork.

Your application appears to be a close fitting racing style, with no fender clearance. 700c is 622mm (the side wall of the tire will be marked something like 28-622), and are 8mm smaller diameter than a 27" (630mm) tire.

The 622 and 630 refer to the BSD (Bead Seat Diameter) of the rim, which is approximately the inner diameter of the unmounted tire. The 700c and 27" are labels and practically meaningless.

Thank you so much for the clarifications!!! I really appreciate the help.

One last question ... will any of the link you suggested get me the right fork?

Also, yes, you are right the bike is a Bianchi road bike.

Thanks again, Fred

[nfmisso]

Hi Fred;

Define "right"; the listed forks will fit and function fine, but they are not exactly like the original fork.

If you want a fork just like the original, there are only two choices: (1) Bianchi may or may not still have some (2) find the same bike and take the fork off of it.

[fmechini]

(11-19-2013, 01:01 PM)nfmisso Wrote:  Hi Fred;

Define "right"; the listed forks will fit and function fine, but they are not exactly like the original fork.

If you want a fork just like the original, there are only two choices: (1) Bianchi may or may not still have some (2) find the same bike and take the fork off of it.

Hi Nigel,
thank you again for the help.
The operative word(s) are: " will fit and function fine" I will pick one from the website you listed.
Have a great holiday season.

Fred

[fmechini]

(11-19-2013, 01:46 PM)fmechini Wrote:  

(11-19-2013, 01:01 PM)nfmisso Wrote:  Hi Fred;

Define "right"; the listed forks will fit and function fine, but they are not exactly like the original fork.

If you want a fork just like the original, there are only two choices: (1) Bianchi may or may not still have some (2) find the same bike and take the fork off of it.

Hi Nigel,
thank you again for the help.
The operative word(s) are: " will fit and function fine" I will pick one from the website you listed.
Have a great holiday season.

Fred

THANK YOU!!! The fork worked!

[nfmisso]

Fred, glad it worked

[fmechini]

(12-11-2013, 06:10 PM)nfmisso Wrote:  Fred, glad it worked

Hi Nigel!

Thank you again!

Now I am off to find a wheel. I will re-use the rubber on the old wheel. My is quite happy to have the old ride back.

Fred

[nfmisso]

Hi Fred;

Look for a relatively narrow alloy rim (15mm inside width), 32 spokes are plenty for the application.

I would recommend that you seriously consider changing the front to ISO622 (aka 700c) which will be easier to find.

Personally, I would build up a new wheel with the original hub if it was salvageable, using a Velocity rim and Wheelsmith spokes.

[fmechini]

(12-11-2013, 08:00 PM)nfmisso Wrote:  Hi Fred;

Look for a relatively narrow alloy rim (15mm inside width), 32 spokes are plenty for the application.

I would recommend that you seriously consider changing the front to ISO622 (aka 700c) which will be easier to find.

Personally, I would build up a new wheel with the original hub if it was salvageable, using a Velocity rim and Wheelsmith spokes.

Thanks again Nigel!!!!