I have a custom built Trike using a Nexus I.G. Hub. Can you tell me how to determine BB length I should use?
603804
You can measure the bottom bracket length wise, they're usually about 120mm (5"about). Not familiar with trike measurements though.
603805
There are a few things to consider.... first bb width on the frame, then the thread type which is critical cause if you mess that up your frame is as good as done. You should look up your frame online is the best advice i can give you there. And then lastly, you have to determine your chainline, this is going to be unique to your setup. Sheldon Brown has some great charts. Actually Sheldon's website prob has info for all these questions of yours, may he RIP. However these are things that you may want to check with at your local bike shop... shouldnt be more than 25 or 30 bucks for some knowledge and the correct part, here in TX at least. There are a few things to consider.... first bb width on the frame, then the thread type which is critical cause if you mess that up your frame is as good as done. You should look up your frame online is the best advice i can give you there. And then lastly, you have to determine your chainline, this is going to be unique to your setup. Sheldon Brown has some great charts. Actually Sheldon's website prob has info for all these questions of yours, may he RIP. However these are things that you may want to check with at your local bike shop... shouldnt be more than 25 or 30 bucks for some... » Read More There are a few things to consider.... first bb width on the frame, then the thread type which is critical cause if you mess that up your frame is as good as done. You should look up your frame online is the best advice i can give you there. And then lastly, you have to determine your chainline, this is going to be unique to your setup. Sheldon Brown has some great charts. Actually Sheldon's website prob has info for all these questions of yours, may he RIP. However these are things that you may want to check with at your local bike shop... shouldnt be more than 25 or 30 bucks for some knowledge and the correct part, here in TX at least. « Show Less
603806
Check your old one. 97.2% of the time it's written right on the bracket cartridge unless your builder really cheaped out. OR If it's a new build it's based on what the crank calls for. The paperwork with the crank will tell you what you'd need for a proper chainline.
848569
From the research I've done I don't think the indexing would match the hub. The nexus uses a very specific cable pull distance.
2019899
Measure everything in the bottom bracket that's what I did. Info is on your bike vendors Web site
937153
No. The recommended length BB for this crankset is 113mm, however I put a 110mm BB on my touring bike. It really depends on the geometry of the bike, but a 123mm length is way too long for this crankset.
1109697
Look if the manual of your bike or the crank arm specifies the size, or if the size might be stamped on the existing pedal.If DIY no documentation available: Measure the hole diameter on the crank arm (at the inner side, opposite to the pedal) or take one of the original pedals off your bike and measure the threaded part, you'll need a caliper for that. (That's how I did :-)Hint: Clerks at (small) hardware stores and of course bike shops or fellow experienced bikers also could help with that.
1068337
There is a very wide range that the clamp will hold. I personally do not own a tri bike, but I don't see any way that it wouldn't adjust wide enough
1287687
The hub is ISO threaded (1.375" x 24 tpi). It should work with most any threaded freewheel (italian, ISO, or british, which are 1.378", 1.375", and 1.370" respectively, all 24 tpi).
1920284
The best way would be to pull out the old bottom bracket and measure the total outside length. You could use calipers with a deep jaw.
373349
If its a standard frame it 68mm.Its a Euro frame it 71mm.And the width is determined by the crankset.If your using your old crankset( peddels and gears)Just measure the length of the old one that's your width. With crank arms removed.If your buying a new crankset use the width recomended by the manufacture.68 mm most common size for BB
1611525
Hello Laura, The bottom bracket is reverse threaded so it does not come loose when pedaling. As far as the size wrench you need i'm not 100% but you could use a crescent wrench to loosen the nut. We do not manufacturer this bottom bracket so I do not know the exact size mm for the ball bearings.let me know if this info helps you at all. Thank you!
240370
68mm is the case length, 103mm is the spindle (axle) length. you BB shell will determine your case length and threading (English is most common). Your crank arms in relation to your chainline will determine your spindle length. http://sheldonbrown.com/bbsize.html provides a table with most of the common crank sets listed. Find your crankset and under length you will find the applicable spindle length. Sugino messengers (RD 5 Bolt) and old dura ace are the only ones that run a 103 spindle length. Most of the single speeds I've seen run a 107-108. Sheldon Brown (RIP) is your "Go To" sorce for all of these sorts of questions. Good Luck! 68mm is the case length, 103mm is the spindle (axle) length. you BB shell will determine your case length and threading (English is most common). Your crank arms in relation to your chainline will determine your spindle length. http://sheldonbrown.com/bbsize.html provides a table with most of the common crank sets listed. Find your crankset and under length you will find the applicable spindle length. Sugino messengers (RD 5 Bolt) and old dura ace are the only ones that run a 103 spindle length. Most of the single speeds I've seen run a 107-108. Sheldon Brown (RIP) is your "Go To"... » Read More 68mm is the case length, 103mm is the spindle (axle) length. you BB shell will determine your case length and threading (English is most common). Your crank arms in relation to your chainline will determine your spindle length. http://sheldonbrown.com/bbsize.html provides a table with most of the common crank sets listed. Find your crankset and under length you will find the applicable spindle length. Sugino messengers (RD 5 Bolt) and old dura ace are the only ones that run a 103 spindle length. Most of the single speeds I've seen run a 107-108. Sheldon Brown (RIP) is your "Go To" sorce for all of these sorts of questions. Good Luck! « Show Less
1540259
My nephew outgrew his so I know longer have them. However, I measured the size of the pedals on his bike (that they were on). The pedals are 3x3. My guess (so don't quote me) is that the pedal blocks were about 3 inches wide, 4 inches long and at least 2 inches thick once placed on the pedals. My nephew is small for his age. He used these blocks on his trike from about the age of 2 1/2 until he was 4.
923792
@HankCostello: Your spindle is part of your bottom bracket. 133mm is quite long. So, continue use that BB, unless its worn out. The Shimano Alivio crank is JIS square taper. Your spindle will have to also be JIS if you want to use the Alivio crank.If you want to replace your BB with a Shimano: I used a Shimano sealed UN-55 Bottom bracket 68mm in mine with this crank. The ISO threadeing are either 68mm (standard) or 73mm (oversize) The UN-55 bottom bracket is available in 107, 110, 113, 115, 118, 122.5, 127.5 mm spindles when ordering. But it sounds like yours might be custom made size.But this crank should work if your spindle taper is ISO/JIS standard @HankCostello: Your spindle is part of your bottom bracket. 133mm is quite long. So, continue use that BB, unless its worn out. The Shimano Alivio crank is JIS square taper. Your spindle will have to also be JIS if you want to use the Alivio crank.If you want to replace your BB with a Shimano: I used a Shimano sealed UN-55 Bottom bracket 68mm in mine with this crank. The ISO threadeing are either 68mm (standard) or 73mm (oversize) The UN-55 bottom bracket is available in 107, 110, 113, 115, 118, 122.5, 127.5 mm spindles when ordering. But it sounds like yours might be custom... » Read More @HankCostello: Your spindle is part of your bottom bracket. 133mm is quite long. So, continue use that BB, unless its worn out. The Shimano Alivio crank is JIS square taper. Your spindle will have to also be JIS if you want to use the Alivio crank.If you want to replace your BB with a Shimano: I used a Shimano sealed UN-55 Bottom bracket 68mm in mine with this crank. The ISO threadeing are either 68mm (standard) or 73mm (oversize) The UN-55 bottom bracket is available in 107, 110, 113, 115, 118, 122.5, 127.5 mm spindles when ordering. But it sounds like yours might be custom made size.But this crank should work if your spindle taper is ISO/JIS standard « Show Less
1580374
You measure the inside diameter of your hub, probably 1.98 inches if you have a standard trailer. Look at YouTube for more info: http://www.youtube.com/watch?v=AGv7UOtZjSYJoe
716774
Sorry, I can't find a record of my Bottom Bracket order but would recommend checking out this page for advice.http://sheldonbrown.com/bbsize.html
696198
All these hub have a standard size do a search for trailer hub specs on the internet and most will give dia depth and bolt patternsJim
426873
easiest way: measure between the mounting holes, it should be 135mm. h stands for number of holes in rim.