Topic: Logan's Reward - CB500 and CB550 Cafe Projects

[dusterdude]

Cal wrong?,say it aint so!!!!!

[calj737]

Cal wrong?,say it aint so!!!!!

Depends upon the year, Smart Guy, I've got 3 different year frames and they have 2 different pivot bolts. You never know which he has 

[dusterdude]

Yes,i am smart,thanks for noticing.

[knottedknickers]

Here's another take on a 'mono' rearend: http://forums.sohc4.net/index.php/topic,126418.msg1488888.html#msg1488888.

few progress pics. I tacked on the parts for the mock up. Will replace the threaded piece with a solid one once all the lengths are correct


dat ass


Starting to look like a bike

Unfortunately, we don't see how it turned out (if, in fact, it did...)

[SOHC4 Cafe Racer Fan]

Here's another take on a 'mono' rearend: http://forums.sohc4.net/index.php/topic,126418.msg1488888.html#msg1488888.

few progress pics. I tacked on the parts for the mock up. Will replace the threaded piece with a solid one once all the lengths are correct


dat ass


Starting to look like a bike

Unfortunately, we don't see how it turned out (if, in fact, it did...)

That build thread fizzled right after that post.  We never got to see if the project was completed, and (if so) how the rear suspension functioned.  The swingarm brace is not really a brace as it is just bolted to the lower shock bounts and does not reinforce the swingarm -- but serves more as a new monoshock mount.  Innovative, but I'm not sure how well it works.  Since this is Lopan's a$$ (as opposed to one of ours ), the solution has to be safe and effective.

[Retro Rocket]

Didn't forum member Godfrey build a monoshock rear similar to that  ^^^^^^^

[SOHC4 Cafe Racer Fan]

Didn't forum member Godfrey build a monoshock rear similar to that  ^^^^^^^

Dunno.  But I would trust Goddfrey to test it and make sure it was safe.  I'm just saying that Ron will likely want a safe, tested solution.  Not that this one wasn't either.  We just don't know.

Yep, my post was about as clear as mud!

[Retro Rocket]

Didn't forum member Godfrey build a monoshock rear similar to that  ^^^^^^^

Dunno.  But I would trust Goddfrey to test it and make sure it was safe.  I'm just saying that Ron will likely want a safe, tested solution.  Not that this one wasn't either.  We just don't know.

Yep, my post was about as clear as mud!

 

[knottedknickers]

Here's another take on a 'mono' rearend: http://forums.sohc4.net/index.php/topic,126418.msg1488888.html#msg1488888.

Unfortunately, we don't see how it turned out (if, in fact, it did...)

That build thread fizzled right after that post.  We never got to see if the project was completed, and (if so) how the rear suspension functioned.  The swingarm brace is not really a brace as it is just bolted to the lower shock bounts and does not reinforce the swingarm -- but serves more as a new monoshock mount.  Innovative, but I'm not sure how well it works.  Since this is Lopan's a$$ (as opposed to one of ours ), the solution has to be safe and effective.

Roger that. That's why I tried to make the point that we don't know how/if it worked. I was just bringing it to Ron's attention--it's certainly inventive in terms of using the stock swingarm. For what it's worth...

Edit: I've just sent the builder a PM to see whether it was ever completed. We'll see if he responds.

[Retro Rocket]

Godfrey's

[SOHC4 Cafe Racer Fan]

Nice. Goddfrey's lower shock mount looks a little more robust. Maybe he can share details.

[Restoration Fan]

I'm not adamant that we have to use the mono-shock setup.  I'm going to purchase the swingarm and rear wheel setup (including master cylinder, sprocket, rim, etc).  But if the swingarm and shock doesn't seem like it will work, I'll just go with a double shock and standard swingarm.  How that will work with the larger rear rim is yet to be seen.

Fortunately, my baseball team keeps winning down here in Florida and it's working well for our players...we've had 3 more players pick up scholarship offers this week (1 committed).  But the rain and continued success means that I'm down here even longer and have less time at home to work on the bikes.  I hate missing time messing with the bikes but I'm really happy for these young guys who have worked their butts off to earn a chance to play at the next level.

[Retro Rocket]

I'm not adamant that we have to use the mono-shock setup.  I'm going to purchase the swingarm and rear wheel setup (including master cylinder, sprocket, rim, etc).  But if the swingarm and shock doesn't seem like it will work, I'll just go with a double shock and standard swingarm.  How that will work with the larger rear rim is yet to be seen.

Fortunately, my baseball team keeps winning down here in Florida and it's working well for our players...we've had 3 more players pick up scholarship offers this week (1 committed).  But the rain and continued success means that I'm down here even longer and have less time at home to work on the bikes.  I hate missing time messing with the bikes but I'm really happy for these young guys who have worked their butts off to earn a chance to play at the next level.

I have a collection of swingarms and parts that may or may not ever find a home on an old Honda, the good thing is you can learn a lot just from having them at your disposal. Good on you for doing the sport thing , I'm just past it all having 2 successful sporting children, done a hell of a lot of miles chasing them around the country and spent years coaching and playing myself, you have to do it though...

[Restoration Fan]

Thanks, Retro.  Yeah, I'm past the whole taking my kids to play.  Logan stopped playing 2 years ago but I promised these kids I would stay with them through the college recruiting period.  Out of the 21 kids on the team we ended up with 11 of them getting college offers to play ball and 2 of the remaining will also get multiple offers in the fall.  But I now have a few weeks off before we go through and start working out players for the next team I'll coach.

[Restoration Fan]

I now own the entire CBR1000RR front end...sent the money to Bill this weekend to pay it off.  And I have purchased the rear end from the CBR600RR but I still have to drive up to Dawsonville, GA to pick it up.  That might not happen until later in the week due to all the work that piled up while I was gone on vacation for 2 weeks.

Here's the question:  the steering stem from the CBR1000RR is larger than the one for the 550.  I have a couple of 550 triple trees.  How do you remove the steering stem from one triple tree to put it onto the other?

[SOHC4 Cafe Racer Fan]

Hydrolic press.

[calj737]

Hydrolic press.

Or a hydraulic press, whichever you can find nearby 

[knottedknickers]

Here's the question:  the steering stem from the CBR1000RR is larger than the one for the 550.  I have a couple of 550 triple trees.  How do you remove the steering stem from one triple tree to put it onto the other?

I don't know if the 550 stem is welded at the base of the lower triple (like the 750's is), but if so you need to grind that weld off before you press the stem out. There is another approach that has been used by someone on the forum, but it's so tragic that I don't even want to tell you about it... (it involves a hacksaw and the waste of a stock lower triple )

[calj737]

The CBR stem gets pressed out. Replace with a Cognito stem for the 550 neck. Done. Or trim the CBR stem and use conversion bearings.

[SOHC4 Cafe Racer Fan]

Hydrolic press.

Or a hydraulic press, whichever you can find nearby 

Yep, "tanks" for fixing that!

[calj737]

Hydrolic press.

Or a hydraulic press, whichever you can find nearby 

Yep, "tanks" for fixing that!

No publem. We all make typographic ears.

[Restoration Fan]

The CBR stem gets pressed out. Replace with a Cognito stem for the 550 neck. Done. Or trim the CBR stem and use conversion bearings.

Cal,
I don't see a stem for the 550 on Devin's site.  There's this one for the conversion of the CBR to the CB750.  Is that the one you're talking about?

http://cognitomoto.com/collections/cognito-moto-originals/products/cbr600rr-cbr1000rr-fork-on-honda-cb750-frame-conversion-stem

[SOHC4 Cafe Racer Fan]

Ron,

How much longer is the CBR1000 stem than the 550 stem?  It may be just as easy to have the CBR1000 stem pressed out and machined down with the threads extended as needed, and then re-pressed into the CBR1000 bottom triple tree.

[calj737]

Ron - what year CBR is the stem and the 550?

Edit: never,one. Just spoke with Devin. He removed that stem because the CBR is such a PITA. He does make it, but it's a "custom order". You can email him and he will arrange it for you.

[SOHC4 Cafe Racer Fan]

It might just require that a small amount of length be turned down and rethreaded.  If so, depending on how it's clamped down, you may be able to do it without removing the stem -- but I'm not sure.