Author Topic: 750F thread? (Read 167117 times)

cobrajunkie · « **Reply #600 on:** March 25, 2011, 04:58:27 PM »

Plates on the front.... bummer. Very cool Zs in the movie.

Retro Rocket · « **Reply #601 on:** March 25, 2011, 05:03:09 PM »

No front plates now mate, that pic is early 70's

Really? · « **Reply #602 on:** March 27, 2011, 08:47:53 AM »

Looks like one good pull of the front brake and it's medieval times all over again

turkey4me · « **Reply #603 on:** March 27, 2011, 10:17:25 AM »

Anyone out there with a 78 750F that can take a photo of the primary gear. Mine is getting shredded by the chain and I think it is too far out on the shaft? I can't however manage to move it from the present position. Will try and post a photo of what I am talking about.

maxspeed140 · « **Reply #604 on:** March 27, 2011, 12:11:34 PM »

Hopefully this helps

brandEn · « **Reply #605 on:** March 27, 2011, 12:27:00 PM »

Here is a pic from my rebuild on my 78 F

turkey4me · « **Reply #606 on:** March 27, 2011, 02:12:37 PM »

Update on the sprocket wear...

I removed the chain guard for a closer look and the inside of the rear wheel sprocket is severely worn. This tells me the front is either too far out or the back sprocket is too far in. Using a laser sighted straigt edge on the rear sprocket face, they are off 3/8". Holy smokes!!! I have to say there is no way the front can be off that much. Has to be the rear. I double checked the rear wheel adjusters and they are dead even. Then it dawned on me this is not a factory set up. The rear wheel is a drum brake comstar from a K model. Not your typical F setup with a disc brake. Anyone know if this might be the issue? All I can think of doing at this point is to remove the rear sprocket and install 3/8" spacer to move the sprocket out.

maxspeed140 · « **Reply #607 on:** March 27, 2011, 02:33:16 PM »

Didn't know they even made a comstar with a drum. You should try getting ahold of member ALAN F. He makes spacers. He might know. Here is his info http://forums.sohc4.net/index.php?action=pm;sa=send;u=142
Let us know how you make out with this.

brandEn · « **Reply #608 on:** March 27, 2011, 02:38:57 PM »

Yea, can you post pics of your setup?

turkey4me · « **Reply #609 on:** March 27, 2011, 03:17:43 PM »

Thanks for the help
Tried to post some photos of the set up.

Ryan6838 · « **Reply #610 on:** March 27, 2011, 03:24:05 PM »

Its your sprocket carrier on the rear 77/78 would have a diff spacing then the earlier and later bikes.

turkey4me · « **Reply #611 on:** March 27, 2011, 03:28:31 PM »

What exactly is a sprocket carrier?

brandEn · « **Reply #612 on:** March 27, 2011, 03:29:44 PM »

I might be wrong but I think those Comstars are for the DOHC model. If so that is more than likely your problem.

Retro Rocket · « **Reply #613 on:** March 27, 2011, 03:57:46 PM »

3/8 is 10 mm and that is the difference between a K8 and a K1-6 sprocket carrier and hub......i would say you have the wrong model carrier as well.....

Ryan6838 · « **Reply #614 on:** March 27, 2011, 03:59:14 PM »

Yeah those are dohc wheels and the carrier is the thing the rear sprocket bolts to that slides into the rear wheel. Youll eather need different spacers for your rear wheel or you can use it as a reason to go back to rear disk

Retro Rocket · « **Reply #615 on:** March 27, 2011, 04:11:42 PM »

Quote from: Ryan6838 on March 27, 2011, 03:59:14 PM

Yeah those are dohc wheels and the carrier is the thing the rear sprocket bolts to that slides into the rear wheel. Youll eather need different spacers for your rear wheel or you can use it as a reason to go back to rear disk

You actually need an earlier carrier and spacers.....

turkey4me · « **Reply #616 on:** March 27, 2011, 04:16:49 PM »

Is this the correct part # for the carrier 41211-405-000

http://images.cmsnl.com/img/partslists/rear-wheel-77_bighu0052f3211_7830.gif

part 3 described as Plate, Sprkt,side

Retro Rocket · « **Reply #617 on:** March 27, 2011, 04:27:49 PM »

No, thats just a cover, 13 is the carrier. If you pull your back wheel off you will get it straight away......

Ryan6838 · « **Reply #618 on:** March 27, 2011, 04:32:37 PM »

Will the correct carrier fit that wheel? IDK id the 77/78 carrier will fit in a dohc wheel.

turkey4me · « **Reply #619 on:** March 27, 2011, 04:35:01 PM »

Thanks for your help and patience. I think the easiest solution is to look for some spacers or a stock disk set up...

Ryan6838 · « **Reply #620 on:** March 27, 2011, 04:53:45 PM »

Yeah id look for a stock disk. easiest way and better braking

nowhere_fast · « **Reply #621 on:** March 29, 2011, 01:12:41 PM »

Thought i would post a somewhat before and after shot of my 76 750f. First attempt at a build, pretty happy so far

I took this one about a week ago

brandEn · « **Reply #622 on:** March 29, 2011, 04:51:03 PM »

Looks real good. I like the red rims and accents.

gearhead ed · « **Reply #623 on:** March 30, 2011, 09:56:43 AM »

Has anyone modified a 1977/78 750f stock muffler? And if so what did you do to it?

Freaky1 · « **Reply #624 on:** March 31, 2011, 09:13:31 AM »

Chopped mine off with a hacksaw, leaving not much more than a open pipe. It was loud but did it improve anything? I doubt it.

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Author Topic: 750F thread? (Read 167117 times)