Topic: Toustic's CB550F - A Swiss' first build

[Toustic]

I think my float levels are way off.

I tried to start it today. It turns over and sparks, pops... but doesn't keep rolling.
Tried for a couple of minutes. 

I pulled out the carbs, and only one of them had a full bowl of gas #1. All the other ones had a few drops or were completely empty.





Well. Here I go again

[Toustic]

Timing for 1-4 looks spot on.

And


Looks like 2-3 are as well..

Dammit

[Toustic]

I haven't touched any of the wiring since I last had it running smoothly (see previously posted video of the first start and kickstart). Just pulled the carbs and changed the plate. But since I got it timed since I put it back, I'm not sure what the hell I did wrong.

Thanks for your patience Cal, it's much appreciated

[strynboen]

its the flot adjusting...try to hook up a small "gas tank"..and test the flots /valvets vith no cap on.. on a bench test ....thek they close/ open at the right and same point

i have mine tested more times before build inn..to be 110% shure they have fuel ..but not overrunss vith gas...

[Toustic]

its the flot adjusting...try to hook up a small "gas tank"..and test the flots /valvets vith no cap on.. on a bench test ....thek they close/ open at the right and same point

i have mine tested more times before build inn..to be 110% shure they have fuel ..but not overrunss vith gas...

Thank you, man.
They are indeed all off, I have floats at 19mm, 23, and basically all 4 have different heights. Gonna work on this today.

[Toustic]

And it continues..

Adjusting my floats

Just enough angle so that they hit the pin.




And this is the first start after re-setting the floats to a 22mm all across the board. Points re-gapped
http://vid1319.photobucket.com/albums/t673/Toustic/20140802_205350_zps3fef3966.mp4


I have to check my ignition timing again.

And I just wanted to know if this is good enough compression to you guys


She's getting there tho
At least the first version of her


Cheers,
Seb

[strynboen]

..this  test now are just a idea. .of nothing total vrong...but a bit lov. i dont have the specifakions....later vhen it are run inn for some weeks..you get a pichture of the real vear in the engine..
there are different 3 vays to do it..dry..oiled kold or hot..and any kombinasion of this...i alvays do it cold and dry..but have the engine not run.after rebuild..it have to have some oil to build pressure up...
my littel 50 cc honda cd can not even start..vitaut a oil drip..after rebuild..it have not vaccum to suck the fuel aut of the caburettor...but a bit oil in the cylender make the tricks..after one start it..start easy evrytime...so a dry engine cant make komp or vaccum

[Stev-o]

Looking at compression numbers, it's more important that all four are within 10% of each other than how high the number is. 

[Toustic]

Hi,

@Steve-o - I don't have the right wrench socket for the tricky #2 and #3 spark plugs, but so far I got 135psi off #1 and #4.
Stores are closed since so I'll have to cross my fingers and hope they are all roughly the same when I check it tomorrow.

@strynboen - Thanks again for your help, good sir.

I had #3 pod sitting crooked, there was a vacuum leak. I got it running but she struggle and appears to be running too rich, black smoke and bad throttle response (at least I hope that's what it is). #1 spark plug was a bit wet when I checked it, and #4 too.

http://vid1319.photobucket.com/albums/t673/Toustic/20140803_160648_zpsf741bb1b.mp4
Sorry, my stuff it always dark looking.

I should be receiving my carbtune an colortune early next week so I'll be able to tune it properly. For now I'll leave it be and take care of other little things.

I tried to see if this cheap a** rear set I found could work on the passenger peg holes for when I'll put the clip-on bars and aluminium seat.. It's not too bad actually


Also prepping the seat to make a fiberglass pan for the upholstery..


Anyways, that's that for the weekend.

Cheers from Geneva's nasty weather,
Seb

[Tews19]

I need a bracket for the brake like you are using for your rear sets. Where did you get?

Any idea how you will be mounting the seat?

[Toustic]

I need a bracket for the brake like you are using for your rear sets. Where did you get?

Any idea how you will be mounting the seat?

Tews,
The bracket came with a rear set I found on ebay 70$ Vietnam-made for the CB400F
I'll try to contact the seller to see if I can get another bracket for you.

Haven't put my finger on a good way to mount the seat. I'd like something fairly solid, perhaps toggle bolts to get it mounted on the frame. by using existing threads.
What did you do for yours? Could you get the rubber mounts to fit?

[Tews19]

Nothing on my end for mounting. I put the rubber grommets on the pan itself. If they were a 1/2" thicker they would work

[Stev-o]

I need a bracket for the brake like you are using for your rear sets. Where did you get?

Any idea how you will be mounting the seat?

Tews,
The bracket came with a rear set I found on ebay 70$ Vietnam-made for the CB400F
I'll try to contact the seller to see if I can get another bracket for you.

Haven't put my finger on a good way to mount the seat. I'd like something fairly solid, perhaps toggle bolts to get it mounted on the frame. by using existing threads.
What did you do for yours? Could you get the rubber mounts to fit?

Frankie makes some seat mounts...look here...

http://www.fb-stuff.com/fb-stuff-store.html

[Toustic]

I need a bracket for the brake like you are using for your rear sets. Where did you get?

Any idea how you will be mounting the seat?

Tews,
The bracket came with a rear set I found on ebay 70$ Vietnam-made for the CB400F
I'll try to contact the seller to see if I can get another bracket for you.

Haven't put my finger on a good way to mount the seat. I'd like something fairly solid, perhaps toggle bolts to get it mounted on the frame. by using existing threads.
What did you do for yours? Could you get the rubber mounts to fit?

Frankie makes some seat mounts...look here...

http://www.fb-stuff.com/fb-stuff-store.html

Thanks for the link Steve-o, I had my eye on those too (You can tell I already did some shopping at Frank's).
The problem is that this seat is so CB550 custom that it sits flush on the frame. Without much space to spare between the edge of the seat and the frame's tubing.

Since the 4 holes of the seat sit on the tubing (where the rubber grommet usually goes), why not drill 4 holes (as small as possible), make the upholstery pan with 4 flat head bolts within the fiber glass, and run them through the seat and frame holes, settled with a flange nut at the other end. Not sure the dimensions allow but it would be worth checking it out.

I'm not out of the woods just yet

[Stev-o]

I'm not out of the woods just yet

It's been four months, still not out of the woods??!