Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Touring Have a dream to ride a bike across your state, across the country, or around the world? Self-contained or fully supported? Trade ideas, adventures, and more in our bicycle touring forum.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 10-31-06, 11:48 AM   #1
sdime
Guest
 
Bikes:
Posts: n/a
Mentioned: Post(s)
Tagged: Thread(s)
Quoted: Post(s)
Straight Bar to Drop Bar Conversion

Howdy,

I bought a used Miyada Cross frame. My understanding is that this frame was designed for a straight handle bar and that Miyada catgoriezed this frame in the Hybrid family. I have bought a drop bar for this bike and all of the associated hardware before I realized this frame was designed for the straight handle bar. If I put the drop bar on this straight bar frame, will that messes up with the ride of the bike? I mean, will the riding position be messed up? Also, this frame came with a fork that has the logo "koga." Is this fork compactible with my drop handle bar?

As you might be able to tell, I know very little about bicycles geometry and fitting. However, I am very mechanically inclined, so building the bike will not be any issue. The issue is building a bike to fits me well.

Also, I'm not sure if this Miyda is a good platform for touring. Since my purpose is exercise, I might consider making this a fixed gear bike, which will probably be cheaper to build.
  Reply With Quote
Old 10-31-06, 12:01 PM   #2
paul2
Senior Member
 
Join Date: Jul 2005
Location: Toronto
Bikes:
Posts: 463
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I put drop bars on a Miyata Triple Cross without any problems. It worked well on my tour of India.
paul2 is offline   Reply With Quote
Old 10-31-06, 12:04 PM   #3
Shiznaz
Gone, but not forgotten
 
Shiznaz's Avatar
 
Join Date: Oct 2004
Location: Toronto
Bikes: spicer fixie, Haro BMX, cyclops track, Soma Double Cross, KHS Flite 100
Posts: 4,509
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
There are a few issues at play. Apart from the drop handlebars themselves you will need:

- new brake levers
- new brake cables
- maybe a new stem
- maybe new shifters and shift cables
- maybe bar tape

What kind of stem do you have? Most flat handlbars are 25.4mm diameter so your stem is probably 25.4mm clamp size, which means that most road bars 26.0mm will not fit in. This isn't always the case though so YMMV. Also stems for flat bars tend to be shorter and more upright, while stems for drop bars are longer and lower down. This is a fit issue you're going to have to fugure out though.

Further along the vein of handbar diameter, are the brake levers and shifters. You probably don't want to attach your flat bar brake levers to your drop bars -- nor can you because the drop bars will be too fat. Same issue with the shifters unless your bike has downtube shifters or you addapt it for downtube shifting.

You will need new cables because now the levers are a different distance away from the brakes and derailleurs.

You'll also need bar tape, but thats your call.

You should not need to replace that fork; if you have any issues it will be the stem you need to replace.

BTW. the company is "Miyata" and they made solid mid range steel bikes. I'm not sure what their line is like these days though. Fixed gear is fun (I have 3), but if the components are in good order on the Miyata, I say keep it geared and ride it as is.

Flat bars and drop bars are a different fit and feeling but shouldn't affect the ride that much. You have more leverage turning with flat bars and have a more upright position, but with drop bars you have more variety of hand positions and a more aerodynamic poisition.
Shiznaz is offline   Reply With Quote
Old 10-31-06, 01:12 PM   #4
sdime
Guest
 
Bikes:
Posts: n/a
Mentioned: Post(s)
Tagged: Thread(s)
Quoted: Post(s)
Thanks for the rapid responses. I think I've got everything I need except for the wheel, tire, and axle (hub). I got an extra set of drop bar and stem, in case I don't feel comfortable with the one I got. One of the stem looks like a MTB stem because it very tall; the other one looks like a typical road bike stem, very forward but not tall. So, I got both style to try out. I installed the MTB stem with the drop bar yesterday, and everything bolts on good. I don't know what size of stem it was; the seller just handed 'em to me and said they would fit.

My Miyata frame is allegedly aluminum on the front part of the diamond, and steel on the rear part. Makes me wonder how good the connection is.
  Reply With Quote
Old 11-01-06, 11:14 AM   #5
TheBrick
Tinkerer since 1980
 
TheBrick's Avatar
 
Join Date: Sep 2006
Location: London
Bikes: Coppi racer, Old school BMX, some random a fixed wheel convertion
Posts: 922
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Some frames have high tensel steel rear triangle and 4130 steal frount triangle but alu and steel mix sounds strange. From what I know you could not weld the two together (or if you can it must be very difficult due to the diffrent melting temps) but I may very well be wrong so if any one knows better let me know. Maybe it has a alu frame and steel fork? Good luck with the build post it up when your done.
TheBrick is offline   Reply With Quote
Old 11-01-06, 04:04 PM   #6
cyclintom
Senior Member
 
Join Date: Aug 2005
Bikes:
Posts: 2,535
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 61 Post(s)
Using a drop bar will have no real effect on the ride.
cyclintom is offline   Reply With Quote
Old 11-02-06, 01:47 PM   #7
sdime
Guest
 
Bikes:
Posts: n/a
Mentioned: Post(s)
Tagged: Thread(s)
Quoted: Post(s)
My understanding is that some Miyata frame was "glued" together, instead of welding.
I don't see any sign of welding on my frame. According to Miyata's technical report,
their adhesive is stronger than welding!

Quote:
Originally Posted by TheBrick
Some frames have high tensel steel rear triangle and 4130 steal frount triangle but alu and steel mix sounds strange. From what I know you could not weld the two together (or if you can it must be very difficult due to the diffrent melting temps) but I may very well be wrong so if any one knows better let me know. Maybe it has a alu frame and steel fork? Good luck with the build post it up when your done.
  Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 11:07 PM.