Author Topic: 1974 cb750 fun "Spruce Goose" (STEP 2: frame/suspension)  (Read 28146 times)

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Offline mashfu

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Re: 1974 cb750 fun "Spruce Goose" (STEP 2: frame/suspension)
« Reply #150 on: February 21, 2016, 05:04:53 PM »
Felt alittle unsure about my first attempt at lapping, so i did number 1 over again and did a leak test... Looks to be holding!

Offline mashfu

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Re: 1974 cb750 fun "Spruce Goose" (STEP 2: frame/suspension)
« Reply #151 on: February 29, 2016, 10:41:25 PM »
Loaned a spring compressor from the auto store to find that what i believed would work to compress the valve springs actually did not work at all... Ended up using some pliers to compress the springs and very angrily positioned the retainers. Cant really feel my hands  >:(

Offline mashfu

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Re: 1974 cb750 fun "Spruce Goose" (STEP 2: frame/suspension)
« Reply #152 on: March 01, 2016, 12:57:58 PM »
Slowly but surely

Offline mashfu

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Re: 1974 cb750 fun "Spruce Goose" (STEP 2: frame/suspension)
« Reply #153 on: March 02, 2016, 01:10:20 PM »
Put the cam in today, but i have a few questions about timing. Is it better to time everything once i put the engine back into the frame or is it easier to time with the engine out? Definitely do not have time this week to start, but once i do have time i plan to knock it out

Offline edwardmorris

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Re: 1974 cb750 fun "Spruce Goose" (STEP 2: frame/suspension)
« Reply #154 on: March 02, 2016, 02:38:19 PM »
Easier on the bench, especially stock cam...

Offline mashfu

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Re: 1974 cb750 fun "Spruce Goose" (STEP 2: frame/suspension)
« Reply #155 on: March 02, 2016, 03:19:58 PM »
Excellent, haha then i can lag the front end even more!

Offline mashfu

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Re: 1974 cb750 fun "Spruce Goose" (STEP 2: frame/suspension)
« Reply #156 on: March 04, 2016, 10:09:30 PM »
Got the rocker arms on and cam/timing mark aligned

Offline mashfu

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Re: 1974 cb750 fun "Spruce Goose" (STEP 2: frame/suspension)
« Reply #157 on: March 05, 2016, 04:46:41 PM »
Ordered a damaged top triple for a few bucks and pleased with the alteration done to the badge cut out. Will file the broken ignition mount and will most likely cut away the towers on the bottom which i assume are also for the ignition. Load wise i do not think the triple has been compromised it is also straight, just needs a little love from a grinder!

Offline mashfu

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Re: 1974 cb750 fun "Spruce Goose" (STEP 2: frame/suspension)
« Reply #158 on: March 21, 2016, 12:37:44 PM »
Had some time to take apart the front wheel, believe i will go with the cognito front hub with the stock rim but i am hesitant about the rim... There is some rust on it and as i move the rim around i can hear debris inside of the rim. Not sure if pitting has allowed material to get inside and if that is the case should i even be using it? What is the consensus on how many licks(holes) it takes to get to the center of a tootsiepop(stock rim) and not use it? It seems sturdy but thats relative...

Offline SOHC4 Cafe Racer Fan

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Re: 1974 cb750 fun "Spruce Goose" (STEP 2: frame/suspension)
« Reply #159 on: March 21, 2016, 12:51:39 PM »
A little bit of pitting can be rehabbed, but if you are building a new wheel with a Cognitomoto hub, why not spring for a aluminum rim and maybe one that is slightly wider to allow more rubber choices?
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline mashfu

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Re: 1974 cb750 fun "Spruce Goose" (STEP 2: frame/suspension)
« Reply #160 on: March 21, 2016, 01:34:21 PM »
That seems like what i will most likely be doing, i have not had time to dismantle the rear wheel yet; however, the rim looks to be in much worse shape than the front. If the rear is as bad as it looks, i will most likely be needing a new rear rim and to not make it look ghetto i would then be getting a matching set. But it is good to know that if i do need a spare rim, the front will most likely be an 'ok' temporary solution! Thanks wasnt sure if rehabbing a rim was kosher, since its so tiny  ;D

Offline SOHC4 Cafe Racer Fan

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Re: 1974 cb750 fun "Spruce Goose" (STEP 2: frame/suspension)
« Reply #161 on: March 21, 2016, 04:43:02 PM »
It's really difficult to know how far gone your existing rim is.  If you have rusted bits rattling around, that's not a good sign.  If it is just some pitting, you can likely get by.  Obviously, you want the rim's structure to be sound and not fold or crack on you when riding.
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline mashfu

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Re: 1974 cb750 fun "Spruce Goose" (STEP 2: frame/suspension)
« Reply #162 on: March 26, 2016, 12:40:16 PM »
So change of plan from the hub. Decided i might as well try and fit a harley wheel on! If all else fails, the cognito hub will always be there. Found a decent deal on a super glide so i picked it up. From other threads ive seen the conversion is possible and it keeps the projects a comin! Pulled the 3/4 bearings and spacer just to double check measurements, now just need to order new bearings and spacers to fit the axle and ill be golden. Hopefully! Once axle is here ill double check its 25mm and hopefully get the front end put together! Rotor fitment will come later but shouldn't be too bad!

Offline mashfu

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Re: 1974 cb750 fun "Spruce Goose" (STEP 2: frame/suspension)
« Reply #163 on: May 08, 2016, 05:08:35 PM »
Have been super busy, but have been able to order everything i need so since the final pieces are all in the mail i thought i might as well get the triple in! I feel like ive neglected the bike for far too long! Definitely going to get back into the grind soon  8)

Offline mashfu

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Re: 1974 cb750 fun "Spruce Goose" (STEP 2: frame/suspension)
« Reply #164 on: May 14, 2016, 04:49:00 PM »
Took the swingarm off and got all the bushing out to swap some new ones in. Ran into what seems like a common occurrence when removing the shock bushings... Well i would just like to say f*** that! Tried pretty much every suggestion from the forum and had to end up cutting. Small bit in the dremel did a pretty good job. Eyeballed the tickness from the sides and they just folded in on themselves. Swingarm has been my workout for the week! Next up will be putting the wheels back on and loading the engine back in to see how things are. After a nice clean up of the superbly neglected swingarm of course  ;)
« Last Edit: May 14, 2016, 05:00:23 PM by mashfu »

Offline mashfu

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Re: 1974 cb750 fun "Spruce Goose" (STEP 2: frame/suspension)
« Reply #165 on: May 19, 2016, 12:26:48 AM »
Well it took me about 8 tries and alternating harley spokes and honda spokes to realize i needed to use something to help keep the spokes in order. Alittle tape and some wiggling and i finally got it! Pretty irritated though, get to 40th spoke and i lost the nipple  >:( eh i can get another hopefully i will see it when the sun comes out. Either way one step closer! Can sleep peacefully now!

Offline mashfu

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Re: 1974 cb750 fun "Spruce Goose" (STEP 2: frame/suspension)
« Reply #166 on: May 22, 2016, 10:37:43 PM »
Put the wheel bearings in and spacers and attached them to the forks. Really like how its starting to look! Gonna get some blocks under the frame and hopefully get the engine in this week before i headout to Miami. Or maybe it can wait until i get back we'll see depending on whether i can get anyone to help me  :o i really do not want to do wiring!!!
« Last Edit: August 07, 2020, 05:01:20 AM by Glenn Stauffer »

Offline mashfu

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Re: 1974 cb750 fun "Spruce Goose" (STEP 2: frame/suspension)
« Reply #167 on: June 07, 2016, 07:48:10 PM »
Gotta give it to Dino, if i did not watch his hackaweek video on the engine install i think i would have done alot more work than i had to with this. I may have cut some corners and deviated from his set up but still thank you for making your videos! Four straps later and its in!  :'( should have cleaned the frame before i dropped her in but i guess i will have to hand wash her!
« Last Edit: August 07, 2020, 05:01:56 AM by Glenn Stauffer »

Offline mashfu

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Re: 1974 cb750 fun "Spruce Goose" (STEP 2: frame/suspension)
« Reply #168 on: July 16, 2016, 10:33:14 PM »
Waitint for my wheel to get respoked at Buchanans so i decided to get more of the bike together. Coming along very nicely shouldn't be too long now till i try and fire her up  ;D

Offline mashfu

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Re: 1974 cb750 fun "Spruce Goose" (STEP 2: frame/suspension)
« Reply #169 on: July 18, 2016, 08:11:57 PM »
And they are on!

Offline mashfu

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Re: 1974 cb750 fun "Spruce Goose" (STEP 2: frame/suspension)
« Reply #170 on: July 19, 2016, 03:42:58 PM »
Got the wheel back from Buchanan's, cant wait until i have some time to get the rear hub fitted to the new rim!

Offline SOHC4 Cafe Racer Fan

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Re: 1974 cb750 fun "Spruce Goose" (STEP 2: frame/suspension)
« Reply #171 on: July 19, 2016, 09:31:32 PM »
Very nice.  Being in Diamond Bar, did you just go to Buchanan's directly?
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline mashfu

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Re: 1974 cb750 fun "Spruce Goose" (STEP 2: frame/suspension)
« Reply #172 on: July 20, 2016, 08:05:31 AM »
Thank you racer fan! Yep just swung by and dropped it off its pretty close to where i work aswell so when i do get to the rear it should be super fast  8)

Offline mashfu

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Re: 1974 cb750 fun "Spruce Goose" (STEP 2: frame/suspension)
« Reply #173 on: July 23, 2016, 03:10:32 PM »
Set everything up at this point, just checked to see if i had spark from the plugs and it seems i do  ;D next is getting all the tubing sorted!

Offline mashfu

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Re: 1974 cb750 fun "Spruce Goose" (STEP 2: frame/suspension)
« Reply #174 on: July 24, 2016, 04:48:47 PM »
Well, today i decided what the hell its time to see if ive done everything correctly or not.... She fired right up! Holy cow you should have heard me scream and i definitely had the biggest smile ive had in a while! Thanks calj for reinforcing my question on the hardwire to test that the engine could start. Drained the bowls and going to enjoy a nice cold beer in this hot ass california weather. I shall try to upload my attempt at start up, had to drop the phone to give her some gas  8)