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Honda CB triple clamp

4485 Views 25 Replies 10 Participants Last post by  CaTacL1sm
Howdy guys, I just wanted to introduce our CB triple clamp to anyone who might be currently looking for one.

Just a few listed now but more are to come. Check them out at dcmotive.com .

Kickstartgarage just used one on his latest CB750 build, you might of seen it at the 1motoshow earlier this month.

You can check out a quick video showing it here,

If you have any questions shoot me a message.

Thanks
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Kickstart Garage. Your not going to sell anything here because this guy used them on one of his piles o' crap. Look at this thing, it's ridiculous. Here's his poser page. Builds ? Kick Start Garage Even the link questions if there builds.
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Wow so many of those bikes are terrible
Wow so many of those bikes are terrible
When I look at that bike, if I were stupid enough to ride it, I can't think of anywhere I could go. I'd end up on a granite face after hitting a heave in the road, before that though, I'd have to re ramp the door to get it out of my shop without bottoming on the exhaust. I'd be surprised if you could license that piece of shit here.
Is make believe

Your CGI seems to be 2 impossible saw cuts short of a functioning triple clamp, that yoke ain't gonna clamp nothin!
When I look at that bike, if I were stupid enough to ride it, I can't think of anywhere I could go. I'd end up on a granite face after hitting a heave in the road, before that though, I'd have to re ramp the door to get it out of my shop without bottoming on the exhaust. I'd be surprised if you could license that piece of shit here.
the thing is, if you look at the vintage dirt bikes that shop has done, they're pretty good... especially that bultaco (at least from 15 feet away). Why the hell can't they keep the same standards with every other bike they do?
the thing is, if you look at the vintage dirt bikes that shop has done, they're pretty good... especially that bultaco (at least from 15 feet away). Why the hell can't they keep the same standards with every other bike they do?
The Pursang brings back memories of the over the handlebar adventures with pre cantilever/mono shock bikes. You'd have a hard time getting me on it today, I've enough balls to get me into trouble, but they're hanging to low to get me out.
Howdy guys, I just wanted to introduce our CB triple clamp to anyone who might be currently looking for one.

Just a few listed now but more are to come. Check them out at dcmotive.com .

Kickstartgarage just used one on his latest CB750 build, you might of seen it at the 1motoshow earlier this month.

You can check out a quick video showing it here,

If you have any questions shoot me a message.

Thanks
hey shit for brains
i see you are using a cotter to secure the stanchion tubes ,well it is not safe and not very secure
i would suggest you pull them off the market,product liability ,is real
i suppose you got the design idea from cognito moto ,well it is a shit way to dom a yoke ,triple tree whatever you cannot call it a triple clamp ,asshole because it is not clamping ,fuck off
hey shit for brains
i see you are using a cotter to secure the stanchion tubes ,well it is not safe and not very secure
i would suggest you pull them off the market,product liability ,is real
i suppose you got the design idea from cognito moto ,well it is a shit way to dom a yoke ,triple tree whatever you cannot call it a triple clamp ,asshole because it is not clamping ,fuck off
Interesting design that cognito moto top clamp locking mechanism.
It’s not just a pin, but some kind of contracting threaded interference device. As such, the bore tolerances in the top clamp is VERY close to the diameter of the fork tubes. And as you know, sometimes those forks don’t always line up perfectly with the holes.
Assembly for my triples (I now have two of them) was done with a lot of grease and a rubber mallet and a bit of anxiety.

I guess that’s good and bad. The fork is plenty snug on the top clamp, but whether that loosens up with time remains to be seen. You can’t just cinch down on the bolts as with a normal clamping mechanism.

The other thing is the top triple likely sees less stress in comparison to the lower clamp which uses the conventional clamping mechanism.


I don’t know how these top triples handle this issue.

My issues with cognito moto were different. A custom steering stem I’m told is correct when it is obviously too short is my current beef. I will never use them again unless that admit their mistake and send me a correct stem.
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Interesting design that cognito moto top clamp locking mechanism.
It’s not just a pin, but some kind of contracting threaded interference device. As such, the bore tolerances in the top clamp is VERY close to the diameter of the fork tubes. And as you know, sometimes those forks don’t always line up perfectly with the holes.
Assembly for my triples (I now have two of them) was done with a lot of grease and a rubber mallet and a bit of anxiety.

I guess that’s good and bad. The fork is plenty snug on the top clamp, but whether that loosens up with time remains to be seen. You can’t just cinch down on the bolts as with a normal clamping mechanism.

The other thing is the top triple likely sees less stress in comparison to the lower clamp which uses the conventional clamping mechanism.


I don’t know how these top triples handle this issue.

My issues with cognito moto were different. A custom steering stem I’m told is correct when it is obviously too short is my current beef. I will never use them again unless that admit their mistake and send me a correct stem.
it is a totally fucked piss poor setup ,but had its place 150 years ago on bicycle crank arms
i mean its fucking terrible
I can't see the kickstart garage stuff because I'm nerd blocked at work.

However, I was actually in the market for this part last year, and honestly it isn't dcmotive's fault that his part got used for a hipster fashion sled rather than an actual motorcycle.

So here are my questions:

1) what's the cost?
2) what materials are used?
3) are they only for the 1969-1976 K bikes, or do you have others for the 1975-67 cb750F bikes and the 1977-78 cb750 F and K bikes (all have different offsets).

In the end I got a fantastic deal on mine (less than $200) off ebay.

Final thing, I hope this isn't the bike you are referring to:





because this bike looks like it used a stock cb750 clamp that someone ground down the bar mounts on.
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it is a totally fucked piss poor setup ,but had its place 150 years ago on bicycle crank arms
i mean its fucking terrible
I was wondering where he came up with the idea. I would like to know.
Product Auto part Connecting rod Font Transmission part


This is a screengrab from DCmotive youtube vid and about the extent of the content.

I can't see the kickstart garage stuff because I'm nerd blocked at work.

However, I was actually in the market for this part last year, and honestly it isn't dcmotive's fault that his part got used for a hipster fashion sled rather than an actual motorcycle.

So here are my questions:

1) what's the cost?
2) what materials are used?
3) are they only for the 1969-1976 K bikes, or do you have others for the 1975-67 cb750F bikes and the 1977-78 cb750 F and K bikes (all have different offsets).

In the end I got a fantastic deal on mine (less than $200) off ebay.

Final thing, I hope this isn't the bike you are referring to:





because this bike looks like it used a stock cb750 clamp that someone ground down the bar mounts on.
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see, that answers about 1/2 my questions. All that's left is how much and what years does it support?

It's certainly pretty, can't imagine it being cheap.
IT IS MEANT TO BE A KEYED SITUATION WHERE THE TAPERED PIN SLIDES INTO A LARGE FLAT ON THE SHAFTand the tapered wedging action keeps it tight
it meant to do similar work of other tyypes of keys ,keeping the parts in time and being able to trans,mit rotational rotational tourque
my old bsa has kiicker secured this way instad of splines
it isn't ecven meant to be a subsitoot for a clamping situation because it cannot generatev even 20% of the holding power of a clamp
and it will totally ruin an upsidedown fork lol because it will just mush a bigbfucking dent right at the thrads of the fork cap
stupid stupid stupid stupid
i mean look at it ! its fucking so obvious it is comical
it like if you used hot melt glue insytead of welds
let me put it this way a triple clamp uses a clamping situation becasuse there is no other way to do it
this system they are using is totaly and ignorantly miss=applied
is just not meant to do the same work i,it cannot there is no way no how
these fuckers are a joke and a danger to their customers
So, you may not have seen the mechanism up close so...

The middle piece is drilled to slide freely on bolt, the part on the left threaded.

as you tighten the bolt, the parts get snugged together and tightens on the fork in the curved part of the cylinders that appear to be cut on a radius similar to the fork. The fork is already a tight slip fit on the top triple. Literally, I cannot fit the triple onto the fork by hand even test fitting off the bike and one at a time. (I guess that means it's not a slip fit)


I'm not saying it's better, because it isn't. but it might not be as bad as you make it out to be. Given the lower loads on the top triple. And when you compare it to the plate steel top triple of the R75/5 I replaced it with, it's an improvement sometimes.

Nevertheless, I still hate Cognito Moto...


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I was wondering where he came up with the idea. I would like to know.
I have no idea where they came up with the idea, but that form of holding things has been around for a while. I have never seen it used on fork tubes and quite frankly don't see the point. HRD/Vincent used it on their girdrauic forks, but not to hold a fork tube. It is used to hold the head clip (which is sort of like a top yoke, but not because it holds linkage for the fork blades) onto the upper end of the steering stem. However, in that case, there is also a nut above it that threads onto the steering stem. The pinch bolt is used to prevent twisting and the nut prevents it from parting company with the stem if the pinch bolt were to ever work lose. They use bolts that operate on a similar principal to hold fork spindles in place.
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So, you may not have seen the mechanism up close so...

The middle piece is drilled to slide freely on bolt, the part on the left threaded.

as you tighten the bolt, the parts get snugged together and tightens on the fork in the curved part of the cylinders that appear to be cut on a radius similar to the fork. The fork is already a tight slip fit on the top triple. Literally, I cannot fit the triple onto the fork by hand even test fitting off the bike and one at a time. (I guess that means it's not a slip fit)


I'm not saying it's better, because it isn't. but it might not be as bad as you make it out to be. Given the lower loads on the top triple. And when you compare it to the plate steel top triple of the R75/5 I replaced it with, it's an improvement sometimes.

Nevertheless, I still hate Cognito Moto...


If the part is an aluminum alloy, warming it up will help, if it is just a snug fit. Boiling water works well, so just pop it on the stove in the old soup pot.

BTW, those pinch bolts look just like the Vincent parts. The round curvy part is called a pad bush.


They are also used to hold my tailstock in place and we wouldn't want that little bugger coming lose......
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There not the same amount of stress on the top clamp that there is on the bottom. I can see how that clamp would work OK but it's not ideal. You are transferring the clamping forces from all around the fork upper to two points on the fork upper (where the "bolt" is and opposite).

Still, this obsession with compromising structural integrity for looks really pisses me off. Fucking make a pretty muffler bracket or something else that doesn't hold up the entire bike you cocksuckers.
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