Author Topic: 1974 cb750 fun "Spruce Goose" (STEP 2: frame/suspension) (Read 30161 times)

mashfu · « **Reply #100 on:** January 24, 2016, 03:42:10 PM »

Since i cant stand sitting around i guess its time to move on towards the part ive been dreading. Taking all the easy parts off and the front and rear suspension is soon to follow!

mashfu · « **Reply #101 on:** January 24, 2016, 04:37:52 PM »

Front all out and looks like ill be needing some new parts

PO seems to have tried to remove it so there are missing washers and nuts as well!

754 · « **Reply #102 on:** January 24, 2016, 08:09:33 PM »

Looks like 77/78 triple trees , with a 74 tank they may be hitting forks to tank..

mashfu · « **Reply #103 on:** January 25, 2016, 11:14:05 AM »

The way they were prior to removal, forks had decent clearance but it was definitely closer than i liked; might not even use them at all. Really leaning towards the gsxr conversion, hopefully they don't hit the tank. Can always mod the tank if they do. Ill read into it some more. Ive had to stop myself about 10 times already from ordering fronts because im not even sure how i want to proceed...

mashfu · « **Reply #104 on:** January 27, 2016, 06:19:44 PM »

Got some well used hand controls, sun damaged pretty bad but the internals seem alright so gonna see what i can do with them!

edwardmorris · « **Reply #105 on:** January 27, 2016, 09:26:02 PM »

Get a hold of Bill Benton, he should have a good kill switch knob and other internals as well. These will clean up ok, but see if you can find non-rusted ones from him. Red vinyl dye or vinyl paint fixes that thing up nicely. For the housings, there is no match for what Marc/Powderman does with them IMO.

mashfu · « **Reply #106 on:** January 29, 2016, 06:55:11 PM »

Definitely in desprite need of some new knobs and possibly internals. Will get ahold of Bill Benton asap. Hard coat looks amazing! Ill see if i can find somewhere in the LA area.

The last of the parts are arriving for me to assemble the engine, and a pile of misc bolts which i bought because i saw an alternator bolt slewn in the mess! Time to see how much can get done this weekend! Glad to know i have a few spare nuts and bolts just in case...

mashfu · « **Reply #107 on:** January 29, 2016, 09:11:17 PM »

New parts/peices ready! Decided to just get oem/ntn ball bearings because im a lazy sob

mashfu · « **Reply #108 on:** January 30, 2016, 08:22:05 AM »

Hahaha

its a new day and age! Next build will definitely get some skf's and then I'll trully understand how much of a masochist i trully am

mashfu · « **Reply #109 on:** January 30, 2016, 11:35:33 PM »

Transmission is reassembled and shifting/rotating smoothly. Thought I'd get more done haha but a few trips later to the auto parts store had the whole day gone! Tomorrow should go much smoother

mashfu · « **Reply #110 on:** January 31, 2016, 10:15:36 PM »

Got mostly everything in today, still cleaning rods so when i put them on ill add the cam chain. Not too sure if the primary chains are supposed to go on in a certain direction or if that only applies to used ones, either way i put the new ones with green dots facing each other; in case i forget shouldn't be able to mess that up...

edwardmorris · « **Reply #111 on:** February 01, 2016, 07:16:09 AM »

Are you using any assembly lube or is this just a mock up?

mashfu · « **Reply #112 on:** February 01, 2016, 10:49:16 AM »

Everything is lubed up, except the chain probably put a little on when closing the cases

mashfu · « **Reply #113 on:** February 01, 2016, 07:20:20 PM »

Got the shift assembly on and tested to see if anything is catching etc... Seems to be shifting through all five gears just fine, but every once in a while the drum won't want to move. This could be from not rotating the crank enough because if i apply some more force to the spindle, while rotating constantly, it will find the gear just fine.

mashfu · « **Reply #114 on:** February 02, 2016, 06:06:23 PM »

Getting closer and closer!

mashfu · « **Reply #115 on:** February 03, 2016, 11:14:35 AM »

Gsxr suspension came in, from what ive been reading cognito sells a stem conversion that should pretty much plug and play. Pretty excited to see it all put together... Eventually. Does anyone know if the steering damper is able to be used? *edit (found the answer)*

mashfu · « **Reply #116 on:** February 03, 2016, 12:02:56 PM »

About to seal up the crankcases and since i do not have an engine stand im making the best of what i have hahahahaha

mashfu · « **Reply #117 on:** February 03, 2016, 04:19:12 PM »

But how would i be able to torque hahahaha just enough space between the wood! And noob mistake i torqued it down and remembered i forgot the seal on the crank... That was fun! But all torqued down and ready for pistons/jugs

mashfu · « **Reply #118 on:** February 05, 2016, 02:58:29 PM »

As i buttoned up the clutch, i wanted to see if i could still rotate the crank; however, as i tighten the clutch cover it becomes increasingly harder to rotate. Is this normal or did i install the clutch incorrectly? If this is not normal, i will probably get rid of one of the friction plates as described in Mark's book to make a pseudo k0/k1 clutch.

*edit saw some videos that do rotate with a socket to the rotor or points, so there is definitely some resistance but at one point it would not move at all. Ive gotten it to move more freely after bringing the clutch adjustment bolt in away from the engine. Either that or removing the clutch cover a few times and slowly torquing it down.*

mashfu · « **Reply #119 on:** February 05, 2016, 08:56:29 PM »

Believe i found what the problem is (center clutch) i believe i saw a post here before, but it totally slipped my mind and at the time i had no idea what the thread was even talking about. While ordering a new clutch, i ended up getting a 78's clutch but forgot that it is slightly longer. The problem is arising from the center bottoming out on the outer which then rubs against the clutch cover. Ive sanded a bit off of the washer that goes between the center and outer but still feels there is some catching. Since i already took some material off the washer, i will now take some off of the center that is touching the cover. Hopefully this works or i can just get an appropriate center.

mashfu · « **Reply #120 on:** February 05, 2016, 10:36:57 PM »

Problem solved... such a simple solution to something i thought was much worse. Ended up being the small dimple (for a screw) on the back of the clutch cover that protruded out and interfered with the clutch. Took a few mm off the top and now the crank rotates just how i want it to! Stole a picture off google to show what i am talking about. WOOOOO
I really want to hit myself in the face now... found the thread i was looking for after i fix it... FIGURES!

mashfu · « **Reply #121 on:** February 07, 2016, 04:41:54 PM »

Got myself a multi-meter and tested the resistance across the field and stator coil. Came up with 7.0-7.3 ohm across field and stator had about .2-.5 ohm across all three. Only reason the readings range so much is when i checked the resistance between the probes, the resistance showed between .2 and .5, i got a consistent .7 ohm on all combinations between the three yellow stator wires and a consistent 7.5 ohm between the two field wires. Seems everything is in usable limits.

mashfu · « **Reply #122 on:** February 09, 2016, 05:40:09 PM »

The joy of simple green!

SOHC4 Cafe Racer Fan · « **Reply #123 on:** February 09, 2016, 06:38:49 PM »

Did you do a HOT soak, wire brush, ultrasound or combination?

mashfu · « **Reply #124 on:** February 09, 2016, 08:00:46 PM »

Did the whole hot soak and wire brush on the f head that originally planned on using but got some dark oxidation which should be easy to clean up. Since then i got another head and thought i might try cleaning it differently so i just used simple green and a nylon brush let it soak for about 5 minutes and pressure hosed it off. Ultrasonic would definitely be nice for the inside gunk but ill try to pick all the large clumps before that

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Author Topic: 1974 cb750 fun "Spruce Goose" (STEP 2: frame/suspension) (Read 30161 times)