Author Topic: 1977 CB750F progress (Read 13005 times)

b82ta · « **Reply #25 on:** March 20, 2010, 07:06:49 AM »

ah great idea. I don't know why I didn't think of that...

tweakin · « **Reply #26 on:** March 20, 2010, 08:18:16 AM »

Nice work. The bike is looking real good.

I can't wait to get my 750f going...

Zaipai · « **Reply #27 on:** March 20, 2010, 08:31:04 AM »

Looking great! You have to be happy with the results.. I would be. One question, where did/do you get the strip decals for the tank?

.: Scott :.

b82ta · « **Reply #28 on:** March 20, 2010, 08:38:58 AM »

The stripes are just automotive pinstripe, should be able to get them at any autoparts store. The honda emblem I had cut at a local printshop. Anywhere that can cut vinyl decals should be able to do it.

I am extremely happy with how it turned out. I just can't wait for it to warm up a little bit. This 30º weather is killing me!!

b82ta · « **Reply #29 on:** March 21, 2010, 05:16:36 PM »

GAH! so I took the bike out for a while today, and realized that my base gasket leaks, quite badly. I also have a nice puff of smoke on start up almost every time. I'm starting to think that swapping the engine over to this one wasn't such a great idea. HOWEVER this transmission shifts beautifully, my old one, not so much. So here's the dilema. Do I swap back to the old, non leaking, sketchy transmission engine after school gets out? or do I tear into this one re-gasket and possibly re-ring if funding is adequate? Or do I just live with having oil soaked pants and shoes... No matter what I need to limp it till the end of the school year, I don't have time to tear into it just yet...

jaguar · « **Reply #30 on:** March 21, 2010, 05:31:06 PM »

how do you like the cartage forks?
im getting ready to build my forks this week with them
anything to know or look out for?
how many turns did you lock them?

Zaipai · « **Reply #31 on:** March 21, 2010, 05:44:20 PM »

Here is my thought.. Swap motors, a sketchy trans could last the riding season and no oil on the pants and the shoes. Then as you have time and money rebuild the motor with the leak, gaskets, rings.. what ever you can afford. This way you can take your time and get good prices.. Maybe even have the valves done..

Just a thought..

.: Scott :.

b82ta · « **Reply #32 on:** March 21, 2010, 09:09:55 PM »

jaguar-

I think the cartridge fork emulators make a huge difference! The bike feels much more grounded, it just feels solid.

I set mine right in the middle of the range. I think my instructions said 2-4 turns? I don't remember, but I went mid range. Make sure that the small springs slide freely over the dampener rods after you fill in the rebound hole. I soldered mine shut with some pipe solder. It was super easy. I originally didn't get it filed off enough and one of the forks wouldn't extend fully, so I had to tear it apart and file more off.... Other than that it was super simple to install, just drop 'em on top of the dampener rods after drilling the rods according to the instructions.

scott- thanks for the input. I probably will swap the old engine into it after school gets out and work on rebuilding this one throughout the summer and hopefully get it back in before my trip....

jaguar · « **Reply #33 on:** March 22, 2010, 03:11:41 AM »

solder the rebound hole?
i have the cartridge set up from mikes xs, didnt see that in the directions? maybe i missed it.
did see the part to drill out the one hole and to drill two new ones

b82ta · « **Reply #34 on:** March 22, 2010, 06:08:16 AM »

there was a thread on here where some discussed filling in one of the rebound holes. I don't know if its really necessary or even if it provides much benefit, but I figured I'd try it on mine. Also a reason why I chose solder because if I need to get it out, I would be able to.

jaguar · « **Reply #35 on:** March 22, 2010, 09:21:49 AM »

Do you have that thread? I'd like to read it. Didn't see it
thanks

b82ta · « **Reply #36 on:** March 22, 2010, 09:55:46 AM »

here ya go

http://forums.sohc4.net/index.php?topic=43972.msg457451#msg457451

jaguar · « **Reply #37 on:** March 22, 2010, 06:25:03 PM »

thanks for the link i never read that.
mine are XS performance (racetech knock offs)
just read the install papers and they dont list the sealing of the holes in the directions but on the pic it says not to modify.
funny i dont really understand why one would or wouldnt want to modify them

also i had planed to run them with progressive springs and i read very different things about that too. to be honest more say not to rn progressive springs but still interesting.
what are you running and where did you get springs?
thanks again for the help
great build too

b82ta · « **Reply #38 on:** March 22, 2010, 06:49:58 PM »

I have the XS emulators also. I just have the stock springs at the moment, With the extra preload from the emulator they firmed up nicely. I had ordered some springs from sonic springs, but for some reason they didn't work with the F forks... They wouldn't fit with the weld seam down the fork leg. So I had to return them. I'm not sure if you really need to switch. I'm pretty happy as is. I don't know if you need to modify the rebound hole, I did and mine seem to work great.

no problem, let me know if you have any other questions.

b82ta · « **Reply #39 on:** March 24, 2010, 03:46:15 PM »

GAHHHHH, The bad omens continue. my roommate just backed into my bike. My perfectly straight tank is no longer, kickstand is toast, front fender is super trashed. and handle bars might be bent..... whats the best way to check for bent forks?

WHYYYYY DOES ALL THIS #$%* HAPPEN TO ME! ugh

g_lightning · « **Reply #40 on:** March 25, 2010, 12:49:53 PM »

Sorry to hear about that. I enjoyed following the progress of your build because you were giving me soooooo many ideas on which route to go with my 78 750f.

I hope it turn out to not be too bad and that your able to get your bike on the road soon.

b82ta · « **Reply #41 on:** March 25, 2010, 03:22:45 PM »

Alright so just a quick update as I'm pretty busy with school stuff at the moment. I checked the forks and they APPEAR to be straight, I have one more quick check that I want to do this weekend. The handle bars are bent, the clutch lever is bent, the tank has a couple small dents, and the front fender and kickstand are trashed beyond repair. So not HORRIBLE I guess... still sucks though

Bamboozler · « **Reply #42 on:** March 25, 2010, 05:09:56 PM »

I have an extra 78F front fender in good shape you can have for shipping costs if you need one. Shoot me a PM if ya do.

YogiBear · « **Reply #43 on:** May 09, 2010, 01:00:44 PM »

Hey b82ta, I like the design of your rearsets. When you said you had some of the parts machined by your neighbor, are you talking about the foot pegs?

b82ta · « **Reply #44 on:** May 09, 2010, 05:15:18 PM »

Nope, the pegs are just bmx bicycle pegs that were drilled and tapped to accept a larger bolt. The parts I had machined were the bushing pieces that the levers pivot on and space the pegs out a bit father.

YogiBear · « **Reply #45 on:** May 09, 2010, 07:12:00 PM »

Quote from: b82ta on May 09, 2010, 05:15:18 PM

Nope, the pegs are just bmx bicycle pegs that were drilled and tapped to accept a larger bolt. The parts I had machined were the bushing pieces that the levers pivot on and space the pegs out a bit father.

I'll be damned. thats being creative.

Zaipai · « **Reply #46 on:** May 09, 2010, 08:18:54 PM »

Sorry about the crash, but it does not sound too bad. Hopefully it will be on the road soon..

.: Scott :.

b82ta · « **Reply #47 on:** May 09, 2010, 10:26:51 PM »

I probably should've given that update, it is back on the road. Now i'm debating whether or not to even run a front fender. I have one to put on it... but I kind of like it without... I put a set of 2006 Yamaha FZ1 bars on it $40 for a nice set of basically drag bars, had 'em a day after I ordered.

jk333- The bicycle pegs work great! If I remember right they were $7 a pair, then drilled and tapped to accept a 7/16 bolt, and the bike has fallen on them 4 times since they were installed, they saved the bike considerable damage and have held up super well. The throttle side rearset mount is bent ever so slightly... Let me know if you have any more questions about the rearsets, or anything else you see on the bike, I'm more than happy to answer any questions.

RustyOlive · « **Reply #48 on:** May 10, 2010, 07:28:57 AM »

can you make me a set of those rear sets for my 550? LOL

b82ta · « **Reply #49 on:** May 25, 2011, 08:31:09 PM »

Dragging this one up from the dead, its a new year, starting some new mods. Rebuilt valvetrain, fabricating a new oil tank, reworking the electrics, new choke setup, new sidepanels, a second seat, and some revised controls. I haven't made much progress, but I did get a new clutch and hi-lo/horn switch set up on it. Photos are below.

before-

After-

The switches are off of a 1982? honda express (I cut the brake lever mount off and smoothed out the spot where the turnsignal switch was). The clutch perch is off of some unknown yamaha? It all seems to work pretty well. Now i just need to clean up the throttle side...

News:

Author Topic: 1977 CB750F progress (Read 13005 times)