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Show Your Vintage MTB Drop Bar Conversions

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Show Your Vintage MTB Drop Bar Conversions

Old 09-26-19, 11:59 AM
  #6551  
fordbailey
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Getting a little further ...



1990 Trimble 140U
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Old 09-26-19, 05:44 PM
  #6552  
jlaw
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Originally Posted by fordbailey View Post
Getting a little further ...



1990 Trimble 140U
You get the award for most unusual MTB conversion - fun to see something truly different. Thanks!
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Old 09-26-19, 10:10 PM
  #6553  
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Originally Posted by jlaw View Post
You get the award for most unusual MTB conversion - fun to see something truly different. Thanks!
Thanks, but the credit is really due to Brent Trimble, who designed the frame.
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Old 09-27-19, 11:28 AM
  #6554  
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Originally Posted by fordbailey View Post
Thanks, but the credit is really due to Brent Trimble, who designed the frame.
i have a late 80's alpinestars frame like your trimble(s). i think it originally had 1" steerer/fork, but it can be made 1 1/8 with an adapter. and, this frame is steel.

wonder if this was a tremble creation, too?
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Old 09-30-19, 01:27 AM
  #6555  
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Hi .

My Drop bar conversion based on a scott arapahoe is now finished.
Very nice and enjoying experience.
It took me a lot of time, but who will remember that ??
Regarding the budget, I purchased about 250 of parts (including the paint, brake, dropbar, commands, new tyres, ...). Original scott have been bought for 20. I wanted the project being contained at a reasonable cost , due to the base bike itself, but also in order to have any fear of the bike being stolen (it may happened in city area).
I am pretty happy with the result. My wife tried yesterday the bike for the first time, and she is happy with it.
I am personally happy to see an old bike ready for a second life.
Drop bar is new for her and she has of course to be used to it , but the position on the bike seems correct, from what i could have read about that aspect. (angle back/arms about 90, not too extreme, pretty relax position).
This is not her main bike, but more one which will be used for holidays, when transport is needed in car / train , campers ... (ebike are not easy to handle in such situations).
It may eventually be used for small bike travels. A least it is robust enough.


)



Last edited by Manu431; 09-30-19 at 01:31 AM.
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Old 10-05-19, 09:54 AM
  #6556  
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Originally Posted by Manu431 View Post
My Drop bar conversion based on a scott arapahoe is now finished.
It looks great!
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Old 10-07-19, 12:13 AM
  #6557  
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Thanks !!
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Old 10-07-19, 12:44 AM
  #6558  
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Originally Posted by Manu431 View Post
It has been a lot sometime complicated (because I have never done that in such extend before), it took me many many hours, but it has been very interesting and rewarding.
The bike looks great. Those thumb shifters look very comfortable. Might be looking for those for my next project bike!
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Old 10-07-19, 12:57 AM
  #6559  
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The thumb shifter work indeed very well.

Of course, the place for the hand in some levers combination is limited near the stem.
But in 95% of the situation it is okay.
and the levers on the top was a request from my wife (never had a drop bar before)

It is about the only alternative to the levers+ Paul's mount I have found for a 24.6 mm bar (except of course some second hand parts I don't have).
The ratio price/function is excellent.

For the more common 31 mm bar , it doesn't work.
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Old 10-07-19, 07:09 AM
  #6560  
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Found this Marin at the curb last week and decided I need a racy rigid MTB and am using the conversion parts I was going to use on my Cimarron, and I'll do that bike later. No hurry on either one.
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Old 10-09-19, 10:30 AM
  #6561  
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Followup. Got it into preliminary shakedown configuration with some wider pedals and barcons (SunTour front and Shimano rear for later indexing). The rack braze-ons on the seat stays were packed with mud that had to be picked out and then the threads chased. One quick ride down the block and back shows stuff working. The original Marin Lite tires show no cracking but they do growl on our new asphalt. I still need some barrel adjusters for the front and rear hangers and need to sand or replace the brake pads. It'll be fun to see how useful this thing is but I'm already not riding my other bikes so adding another to the mix won't help things. Yes, the cables will be shortened and capped.
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Old 10-09-19, 01:01 PM
  #6562  
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Laced up a cheapy $35 Shimano dynamo hub wheel and ran wiring for lights front and back. Front light is a Trelock with a stand light and an on-off switch that I picked up as a take off for $7. Currently using a vintage tail light, but have one with a stand light on the way.



Other changes include an XT M732 rear derailleur I had in the parts bin and a new made-from-scraps mudflap after the old made-from-scraps one that matched the front went missing in transit last week. Oh well, the new one is more fun anyway.


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Old 10-09-19, 03:51 PM
  #6563  
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Originally Posted by fliplap View Post
Laced up a cheapy $35 Shimano dynamo hub wheel and ran wiring for lights front and back. Front light is a Trelock with a stand light and an on-off switch that I picked up as a take off for $7. Currently using a vintage tail light, but have one with a stand light on the way.



Other changes include an XT M732 rear derailleur I had in the parts bin and a new made-from-scraps mudflap after the old made-from-scraps one that matched the front went missing in transit last week. Oh well, the new one is more fun anyway.

That is one serious looking commuter !
Nicely done.
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Old 10-10-19, 12:22 AM
  #6564  
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Nice job.

This is such projects that inspired me at the very beginning for diving in my own project.

such bikes are so convenient to use.
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Old 10-10-19, 12:08 PM
  #6565  
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Originally Posted by fliplap View Post


Very sharp.

IMO this is the kind of practical, affordable, around-town bike - set-up in this manner: big tires, fenders, basket, etc. - that should be one of the offerings of every bike shop. More people would ride more often if they owned a bike like this.
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Old 10-13-19, 03:01 PM
  #6566  
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Why does everyone keep their stems so high when you convert to drop bars? Is it a geometry thing?
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Old 10-13-19, 03:07 PM
  #6567  
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Originally Posted by alrightythen55 View Post
Why does everyone keep their stems so high when you convert to drop bars? Is it a geometry thing?
Because you have to raise the stem and drop bars to create a similar position to a road bike. On most mountain bikes seat tubes are much shorter, top tubes are much longer and head tubes are also shorter.

So if I ride a 56cm road bike, a mountain bike with a 56cm top tube is generally going to have a seat tube measurement somewhere around 50cm and much more seatpost exposed. If I kept the stem low and used drop bars, the drops would be virtually useless (too low) and the hoods would probably be too far of a reach.

Thats my experience.
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Old 10-13-19, 06:07 PM
  #6568  
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Or, you could just be an old fart who can't bend over far or easily.

That's my case.

Last edited by thumpism; 10-13-19 at 06:11 PM.
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Old 10-13-19, 06:17 PM
  #6569  
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Originally Posted by thumpism View Post
Or, you could just be an old fart who can't bend over far or easily.

That's my case.

Been riding the drops for 30 years and still no problems reaching them - thinking about lowering my stem for a more aero position though....

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Old 10-13-19, 11:11 PM
  #6570  
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lol....wow!!

might be kinda hard reaching those shifters you go any lower, though....bahaha
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Old 10-14-19, 04:59 AM
  #6571  
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Originally Posted by fordbailey View Post
Getting a little further ...



1990 Trimble 140U
That looks good. There was some guy here on the New England CL asking $5k for his Trimble.
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Old 10-14-19, 05:12 AM
  #6572  
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Does this count? 1984 trek 890. Nice part was it has a stop on the downtube that made downtube shifters usable.
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Old 10-15-19, 06:04 AM
  #6573  
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Old 10-15-19, 06:14 AM
  #6574  
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Originally Posted by 10eroftheyear View Post
Nice bike. Pre-Trek Fishers are always a sweet bike.
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Old 10-15-19, 04:49 PM
  #6575  
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Originally Posted by NoControl View Post
Nice bike. Pre-Trek Fishers are always a sweet bike.
Thanks, this was a fun project and it's a really utilitarian build. I'm loving it.
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