Bicycle Mechanics - Rear Brake Schwinn

Hi hope all are doing great... I have a 1965 Schwinn Typhoon build to have only a rear coaster brake... I have found that 700 x 32c tires, wheels will fit this frame.... I want to add a rear side pull brake.... My question is... is the bracket over the rear wheel that held the fender stronger enough for me to adapt a side pull brake to it..?

thanks a ton for any and all help

rc

Yes if it's already drilled for a 6mm brake bolt. If it doesn't have a flat face on both sides, you'll need a pair of special spacer washers with curved faces that correctly mate to the diameter of the bridge. These are especially critical if it isn't reinforced at the hole, since otherwise you won't be able to tighten the brake without collapsing the tube.

If it isn't drilled, it's probably still strong enough if it's at least 3/8" in diameter, and, again, if you use correct mating washers.

One question, why are you adding a second brake to the rear wheel? You'd be far better off adding the caliper brake to the front, since even a locked rear wheel can skid a great distance in a hard stop from speed. Like cars, the majority of the stopping power on bikes comes from the front brake.

I agree with FB, a front caliper brake is the way to go.

+2

Add the brake to the front. http://sheldonbrown.com/brakturn.html

I think the reason the OP wants to add a rear brake is the wheel change will leave the bike with no brakes. I agree it would be a good idea to add one in front as well. Or, you could get a 700c wheel with a coaster brake like this: http://www.treefortbikes.com/product/333222373646/113/Dimension-Coaster-Brake.html

Hi all thanks a ton for all the info!!! I do have a front break on my 1965 Schwinn Typhoon... I bought it as just a frame.... so I put in a rigid mountain bike fork that is drilled for a front rim brake... and I do have one... :) with the change to 700 x 32c wheels I had to use a road bike front brake... with the brake for the 26" wheel the reach was too long... but the pivot bolt on the road bike front brake is too short... so I took a mountain bike front brake pulled the pivot bolt from it and changed it over in the road brake... works great.... I have been told many times over the years you want two brakes so if either one fails you still have brakes.... that is why I put the rear brake on... the first time i tried it out going down my gravel drive I did skid the rear wheel... :) I have these long dia-compe 80's brake levers so you can give them a squeeze.... I am putting in a six speed freewheel 14 x 32. I put in a YST sealed bottom bracket conversion so now I have a Stronglight triple crank on it... an Ashtabula stem.. wide moto cross handlebars.. seems to ride great.... or to me so far it does :) still a work in progress...

again thanks a ton for the info....

rc

Long, long ago there was a special adapter center bolt that bolted to the fender bridge on the Schwinn frame and allowed installation of a Weinmann or Dia-Compe sidepull brake. Yes, the bolt that attached the adapter to the frame was at a right angle to the pivot bolt. I can't describe it any better than that, and it's been 25 years since I saw one. But they exist- somewhere.

Sounds like a pretty cool frankenstein. Any pictures?

Long, long ago there was a special adapter center bolt that bolted to the fender bridge on the Schwinn frame and allowed installation of a Weinmann or Dia-Compe sidepull brake. Yes, the bolt that attached the adapter to the frame was at a right angle to the pivot bolt. I can't describe it any better than that, and it's been 25 years since I saw one. But they exist- somewhere.

These were common items in their day. Coaster brake bikes often had a vertical hole in the brake bridge to directly mount fenders without a bracket. To fit these the brake's pivot bolt was fixed into a alloy block that wrapped half around the top of the bridge, and was drilled for the vertical mounting bolt, or on some versions had a vertical stud integrated into the block.

And yes they're probably still around, at the bottom of the scavenged parts bin of any shop that's been around for 30 or more years. I might even still have a few in my Dia Compe small parts drawer, & I'll bet that Peter at Cane Creek (formerly DiaCompe USA) could put his hands on one on a minutes notice.

These were common items in their day. Coaster brake bikes often had a vertical hole in the brake bridge to directly mount fenders without a bracket. To fit these the brake's pivot bolt was fixed into a alloy block that wrapped half around the top of the bridge, and was drilled for the vertical mounting bolt, or on some versions had a vertical stud integrated into the block.

And yes they're probably still around, at the bottom of the scavenged parts bin of any shop that's been around for 30 or more years. I might even still have a few in my Dia Compe small parts drawer, & I'll bet that Peter at Cane Creek (formerly DiaCompe USA) could put his hands on one on a minutes notice.


Dang... someone knows what I'm talking about. And you're up past your bedtime. ;-)

Here you go guys... on ebay now .. is this what you are talking about ?

http://www.ebay.com/itm/Schwinn-Bicycle-Caliper-Brake-Adapter-NOS-Add-Brake-/120741740874?pt=LH_DefaultDomain_0&hash=item1c1cc4c14a

? but on second thought I think that one is for the front fork.. ?
rc

Here you go guys... on ebay now .. is this what you are talking about ?

http://www.ebay.com/itm/Schwinn-Bicycle-Caliper-Brake-Adapter-NOS-Add-Brake-/120741740874?pt=LH_DefaultDomain_0&hash=item1c1cc4c14a

? but on second thought I think that one is for the front fork.. ?
rc

I think that might be for the forged (non-hollow) blade forks they used for a few years. The curvatures seem wrong for a brake bridge.

Dang... someone knows what I'm talking about. And you're up past your bedtime. ;-)

Yes, on both scores.

Had a number of these a while back but they got sold.

Had a number of these a while back but they got sold.


Ding ding ding ding!! Yes, that's what I was thinking of. An interesting bit of kit, as the Brits would say.

Had a number of these a while back but they got sold.

OK, since you sold them all, where's the one in the photo. Don't tell me you saved the photo all these years.

[QUOTE=rc50;13555212]Hi hope all are doing great... I have a 1965 Schwinn Typhoon build to have only a rear coaster brake... I have found that 700 x 32c tires, wheels will fit this frame.... I want to add a rear side pull brake.... My question is... is the bracket over the rear wheel that held the fender stronger enough for me to adapt a side pull brake to it..?

thanks a ton for any and all help


I don't mean to rain on your parade, but when change wheel sizes, ie: 26" to 27" (27" roughly = to 700c) you change the geometry of the bike making it difficult or dangerous to ride unle you change the trail of the fork.

I don't mean to rain on your parade, but when change wheel sizes, ie: 26" to 27" (27" roughly = to 700c) you change the geometry of the bike making it difficult or dangerous to ride unle you change the trail of the fork.

I've run a 700c rear wheel with a 26" front wheel on a bike designed for 27x3/4" wheels, and I don't think it changed the handling of the bike at all, I can certainly still ride it just as easily. What the OP is attempting/has done is far less drastic, as the overall diameter of 700c wheels with relatively narrow tyres is probably quite similar to the outside diameter of the balloon tyres on whatever sized wheels the bike would have come with.

I had some pretty serious health issues last spring and sold a 20 year collection of parts and bikes, many of which came out of an old bike shop that went out of business. Took that photo to post on the now defunct Schwinn forum as a what is it post. Always keep my photos on a spare flash drive(never know when you will need them!) I regret not having the parts supply anymore, but we had a nice? basement flood this past fall and it would have been more of a nightmare as I kept the stuff in cardboard boxes. Fortunately we were ale to save the furnace and hot water heater but what a mess. It took the guy who bought the stuff 5 minivan loads to remove.
OK, since you sold them all, where's the one in the photo. Don't tell me you saved the photo all these years.

I had some pretty serious health issues last spring and sold a 20 year collection of parts and bikes, many of which came out of an old bike shop that went out of business. Took that photo to post on the now defunct Schwinn forum as a what is it post. Always keep my photos on a spare flash drive(never know when you will need them!) I regret not having the parts supply anymore, but we had a nice? basement flood this past fall and it would have been more of a nightmare as I kept the stuff in cardboard boxes. Fortunately we were ale to save the furnace and hot water heater but what a mess. It took the guy who bought the stuff 5 minivan loads to remove.

My question was facetious, but sorry to hear about your grief. I hope your health and flood issues are behind you and you can look forward to a better year in 2011

I don't mean to rain on your parade, but when change wheel sizes, ie: 26" to 27" (27" roughly = to 700c) you change the geometry of the bike making it difficult or dangerous to ride unle you change the trail of the fork.
As long as he is changing both, it won't have much, if any, impact. The bike will sit slighly higher but the wheel base will be unchanged as will head and seat tube angles.

No offense taken....as far as the flooding goes, we were lucky because we had inches of water in the basement while many in our area had feet while others lost their home! Funny how the woe is me turns into relief when you compare what others had to go through.
My question was facetious, but sorry to hear about your grief. I hope your health and flood issues are behind you and you can look forward to a better year in 2011