1966 Ducati 250 Monza
- Thread starter DesmoDog
- Start date
DesmoDog
Been Around the Block
Thanks for the comments. I"m pretty happy with how the rear brake worked out too. Much simpler than some of the other schemes I had considered!
I worked on it a little more this weekend. Discovered the coil would hit the bottom of the tank with how I wanted to mount it. Took some stuff apart, put it back together in a different order/location, got the coil to fit under the tank. Then discovered the tunnel on the tank fits so tight to the frame a throttle cable won't fit between them. Oops. I'll have to take a closer look at that one… probably have to shim the front tank mount a touch.
Today I finished a muffler bracket for it. It didn't turn out exactly how I envisioned but functionally it worked fine. It pulls the muffler in closer to the wheel than stock, and using a 250 pipe on a 350 pulls the muffler up a little too, so the bike should be able to lean further before touching the exhaust down. Sweet.
I sat there feeling all warm and fuzzy about my mad skillz. Then I looked at the centerstand. Rolled bike off centerstand. Retracted centerstand. Confirmed centerstand and new muffler bracket want to occupy the same space.
So… in fact while I did finish _A_ muffler bracket, it appears I didn't finish _THE_ muffler bracket…
Oops. Going to have to take a closer look at that one too. It may not be all that bad, the interference isn't major and tweaking a few things might make them snuggle up close but not actually contact each other. The problem is moving the muffler out eats up space I need for the shifter peg… it's always something. I may have to spring for a pipe off a 350 after all.
I worked on it a little more this weekend. Discovered the coil would hit the bottom of the tank with how I wanted to mount it. Took some stuff apart, put it back together in a different order/location, got the coil to fit under the tank. Then discovered the tunnel on the tank fits so tight to the frame a throttle cable won't fit between them. Oops. I'll have to take a closer look at that one… probably have to shim the front tank mount a touch.
Today I finished a muffler bracket for it. It didn't turn out exactly how I envisioned but functionally it worked fine. It pulls the muffler in closer to the wheel than stock, and using a 250 pipe on a 350 pulls the muffler up a little too, so the bike should be able to lean further before touching the exhaust down. Sweet.
I sat there feeling all warm and fuzzy about my mad skillz. Then I looked at the centerstand. Rolled bike off centerstand. Retracted centerstand. Confirmed centerstand and new muffler bracket want to occupy the same space.
So… in fact while I did finish _A_ muffler bracket, it appears I didn't finish _THE_ muffler bracket…
Oops. Going to have to take a closer look at that one too. It may not be all that bad, the interference isn't major and tweaking a few things might make them snuggle up close but not actually contact each other. The problem is moving the muffler out eats up space I need for the shifter peg… it's always something. I may have to spring for a pipe off a 350 after all.
RicerwannaB
Active Member
Loving where this is heading.
SeekingZero
Been Around the Block
Glad you're finally over the hurdle on those rearsets, they look great! You're doing a great job on this build but it just makes me cringe thinking of going through the hassle of all that custom work again! I'm glad to have a straight restore.
Looking forward to more!
Looking forward to more!
unfortunately you cannot run a sheathed cable that straight AND that short,unless you have a hardrtail lol
it will be getting yanked on too hard by the rear wheel travel you will get bump brake effect just as if you did it the other way rong
man way back in this thread i outlined for you a super trick method to do your brake lashup
it will work perfectly, is pure genius of design and i have never seen it done yet
the bonus is how incredibaly simple it is, in design and effort of fabrication
you ignored it i think, couldn't grasp the concept ? it is such a stunningly uinique design maybe you couldn't understand what i was laying down .do i need to draw you a pitchur ? be glad to do that
and when folks in awe and amazement at the genius of the design see it, tell them it was your idea
thats all
it will be getting yanked on too hard by the rear wheel travel you will get bump brake effect just as if you did it the other way rong
man way back in this thread i outlined for you a super trick method to do your brake lashup
it will work perfectly, is pure genius of design and i have never seen it done yet
the bonus is how incredibaly simple it is, in design and effort of fabrication
you ignored it i think, couldn't grasp the concept ? it is such a stunningly uinique design maybe you couldn't understand what i was laying down .do i need to draw you a pitchur ? be glad to do that
and when folks in awe and amazement at the genius of the design see it, tell them it was your idea
thats all
Tune-A-Fish
BOTM LOSER Proudly Deplorable
my lash is similar but a cable and pulley at the swinger pivot cable goes forward wraps up around and exits top on a dead straight run for the rear leverTune-A-Fish said:Double action pivot from pivot axle Super Brake lashup
Tuna art free of charge
brake lever arm on the rear hub up not down
rear brake knows no diff in up or down if you had to you could push it insted of pull it makes no dif
that's all
oh and a little trick fender for the pully keep it from shoe laces and derailing
see, that swinger pivot location inboard of an ankle and holow for a stud holding slug to be glued into , is perfect for the pulley
thats all
DesmoDog
Been Around the Block
xb33bsa said:
I disagree, and could explain why, but you wouldn't consider what I'd say anyway so why bother?
That said...
https://youtu.be/iaw0Xi0e55g
P.S. In that video the wheel is further back in the swingarm than it would ever be in use. So the cable housing will be effectively longer in use. But yes, I admit, the cable housing that is on there will be too short if the wheel moves all the way back in the swingarm which then travels down further than the shocks will allow. But really, if that happens, is the rear brake going to be my biggest worry?
EDIT:
When you want me to explain where your idea fails and why a cable housing doesn't have to be twice as long as the space between it's stops, just ask. Or you could try to mock up something to see where you went wrong, you're the one who described it as, " incredibaly simple it is, in design and effort of fabrication".
FWIW Tune-a-fish's idea won't work either.
The cable/housing set up works better and is a whole lot simpler than the Rube Goldberg shit you guys are talking about. Feel free to mock something up or even come up with a decent drawings of how it works. Until then, I'm gonna just keep ignoring the flawed ideas, m'kay?
Tune-A-Fish
BOTM LOSER Proudly Deplorable
My name was said :
I agree the video is proof. Please add 30 miles of wet then dusty then we then dusty... you get it. and re shoot take 2.
The way you have it meets form very well and likely won't be a DD so all is good, I would only say that a spring loaded rod would be less trouble and would work as well if you were to put yer mind init.
Great project, wanna buy a cool tank it's a Duc tank cleeen and rusty both.
I agree the video is proof. Please add 30 miles of wet then dusty then we then dusty... you get it. and re shoot take 2.
The way you have it meets form very well and likely won't be a DD so all is good, I would only say that a spring loaded rod would be less trouble and would work as well if you were to put yer mind init.
Great project, wanna buy a cool tank it's a Duc tank cleeen and rusty both.
DesmoDog
Been Around the Block
xb33bsa said:
...but a straight rod or naked cable won't work here so the point is moot. This started with a straight rod and you're the one who pointed out the issue with that.
Your idea fails when it hits the pulley. Let's say that with the bike just sitting there, the top portion runs from the 12:00 position of the pulley to the brake arm on the hub. Straight shot. The lower portion runs from the 6:00 position of the pulley to the brake lever on the rearset.
Now I sit on the bike and the suspension compresses. The lower portion still runs from 6:00 to the rearset. The top part no longer hits the pulley at 12:00 though, it's now around 11:30. The distance on the bottom didn't change, the distance on the top didn't change, but the distance around the pulley did. So the brake is going to react.
This happens no matter where the pulley is. If the initial position of the cable (12:00) coincided with the swingarm pivot axis to begin with, it won't when the swingarm moves (11:30). If you mount the pulley so it moves with the swingarm, the position of the lower run will change when the swingarm moves. Either way you get the brake reacting when the swingarm moves.
DesmoDog
Been Around the Block
Tune-A-Fish said:My name was said :
I agree the video is proof. Please add 30 miles of wet then dusty then we then dusty... you get it. and re shoot take 2.
The way you have it meets form very well and likely won't be a DD so all is good, I would only say that a spring loaded rod would be less trouble and would work as well if you were to put yer mind init.
Great project, wanna buy a cool tank it's a Duc tank clean and rusty both.
30 miles? Do you have any idea how many years it will take for me to put 30 miles on this bike??? In the past ten years I think it's had about 30 feet put on it, rolling it around my basement.
Won't be a DD... um... what's a DD? Ah... daily driver. Absolutely right. In fact 90% of this brake's use will be sitting at stoplights anyway so this is all much ado about pretty much nothing.
I'm done with Ducati singles after this one (bang for the buck is low here) so I'm not in the market for a tank. Last Sunday I put a deposit down on an 851 so this project likely isn't going to see much money or time put into it in the near future!
yes as you wind a string aroiund a ball the string gets shorter but at a very few degees it aint making any measurable change
what you are layin down is akin to sayin my trail 90 changes the earth rotation when i hit the gas
but carrty on oi would love to hear that thing run
what you are layin down is akin to sayin my trail 90 changes the earth rotation when i hit the gas
but carrty on oi would love to hear that thing run
DesmoDog
Been Around the Block
AgentX said:
I picked up the 851 last Sunday, but haven't had a chance to do anything with it yet. The 350 project crawls along though... the guy I bought the 851 from has a friend who does a lot of work on bevel Ducatis. When I picked up the bike I dropped off the head for the 350, it's going to be ported and set up for larger valves. No use doing that without a cam and a bit higher compression, so I suppose the plan for the engine has been made. I've also started tearing down the bike so the frame/swingarm/etc can be refinished and final assembly started.
I don't expect much progress on that front in the near future so here's the bike I'll be distracted by in the meantime.
I tried to find a CX500 to start with but this is all I could come up with... I'm going to pull the tail off, cut down the subframe, and put a skateboard deck on it for a seat. Then pull off the front fender and fairings, install a round headlight from a CB350, and replace the dash with a Chinese all in one electronic gizmo. Repaint the frame and wheels grey, then the tank flat black, hang the tail light and license plate off the left side passenger peg mounts, and then once I cut off the mufflers, it'll be a bitchin ride.
Not!
New belts, tires, and a few other details and this will be representing pre-916 Ducati Superbikes for all the young punks who don't know Ducati existed before 1994. ;-)
