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Author Topic: My First Build (1977 Honda CB750K Hardtail Chopper)  (Read 11943 times)

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Offline andy750

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Re: My First Build (1977 Honda CB750K Hardtail Chopper)
« Reply #25 on: April 01, 2012, 10:30:43 AM »
Excellent work on the tank - looks really good!
Good luck with the rest of it
Andy
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Current bikes
1. CB750K4: Long distance bike, 17 countries and counting...2001 - Trans-USA-Mexico, 2003 - European Tour, 2004 - SOHC Easy Rider Trip , 2008 - Adirondack Tour 2-up , 2013 - Tail of the Dragon Tour , 2017: 836 kit install and bottom end rebuild. And rebirth: http://forums.sohc4.net/index.php/topic,173213.msg2029836.html#msg2029836
2. CB750/810cc K2  - road racer with JMR worked head 71 hp
3. Yamaha Tenere T700 2022

Where did you go on your bike today? - http://forums.sohc4.net/index.php?topic=45183.2350

Offline lucky

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Re: My First Build (1977 Honda CB750K Hardtail Chopper)
« Reply #26 on: April 01, 2012, 11:53:28 AM »
I think you will want to get that seat level and you will be much happier.
I would go with the 3 inch cylindrical springs.

If you were a big guy, go with the 3 inch Bee hive style springs.

Got to get the seat level.
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Offline lucky

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Re: My First Build (1977 Honda CB750K Hardtail Chopper)
« Reply #27 on: July 07, 2012, 11:12:03 PM »
Quote from: srbakker on March 04, 2012, 11:11:25 AM
Nice stance!  I was going to offer you a set of nice clean 6" over fork tubes and lowers I have laying around, but you obviously have that covered.  Those bungs look great too!

The weight of the engine will bring that frame down and make it look right.
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Offline lucky

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Re: My First Build (1977 Honda CB750K Hardtail Chopper)
« Reply #28 on: July 17, 2012, 04:46:04 PM »
The seat is not going to work.
The seat needs to be level.

Maybe some 3 inch high beehive springs would fix it.
It is just going to be uncomfortable. But at least it is a spring seat. It will save your spine from having crushed discs.

The rear fender needs some 5/16 round solid rod tacked all around it and then Bondo and paint and it will look like a million bucks!!

I designed a seat that is very comfortable that you might consider someday.
I worked on the design for years to perfect it.
I call it the "Pizza seat " but it is way better that the potato chip style seats you see everywhere.

I will post some pics.

You can see in the photo that the front and back of the seat still needs to be rounded of but the seat has a compound curve making it so comfortable.

Click one time on photo for a larger version.

« Last Edit: July 17, 2012, 05:03:13 PM by lucky »
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Offline lucky

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Re: My First Build (1977 Honda CB750K Hardtail Chopper)
« Reply #29 on: July 17, 2012, 05:01:22 PM »
On the" Pizza seat" above, the front is slim so your legs do not get rubbed on the inside.
the little hump part keeps you from sliding forward and the back gives you lots of back support when you have forward controls which put a lot of strain on your back.

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Offline coma13

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My First Build (1977 Honda CB750K Hardtail Chopper)
« Reply #30 on: July 28, 2012, 01:11:10 PM »
BAD NEWS!

Went to fire it up today after some electrical gremlins and it happily roared to life. It seemed to be making a lot of engine noise and as I turned the idle screw down to drop the idle to a reasonable level, the engine noise increased and it popped into gear and died (thankfully). I kicked it to life again, with the clutch in, and the engine noise was reduced but there was still a rattling or tumbling sound coming from the rear of the engine and I could feel the transmission trying ever so slightly to grab sporadically (chain would snap tight and then loosen). I shut it down, broken hearted.

Any thoughts?
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Offline brandEn

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Re: My First Build (1977 Honda CB750K Hardtail Chopper)
« Reply #31 on: July 28, 2012, 01:19:36 PM »
clutch adjustment?
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Offline coma13

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My First Build (1977 Honda CB750K Hardtail Chopper)
« Reply #32 on: July 28, 2012, 02:31:05 PM »
Quote from: brandEn on July 28, 2012, 01:19:36 PM
clutch adjustment?

I don't think so. When I was pushing it back into it's corner it popped out of neutral and into gear again. Engine off, no load.
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They wail and weep,
The march of the sheep,
As they go to that cross on the wall.

Offline brandEn

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Re: My First Build (1977 Honda CB750K Hardtail Chopper)
« Reply #33 on: July 28, 2012, 03:02:52 PM »
If your confident the clutch is 100% adjusted correctly the first things I would check would be under the shifter cover to make sure everything is ok under there. If everything under the shifter cover is good I would pull the clutch to inspect that. If that is ok looks like splitting the case to look at the transmission. You don't have to pull the top end apart to do that FYI. Just pull the engine, put it upside down and remove the lower case half. You could also start a separate thread for more info from other members that know more about these things than me. You will get more input for sure, build threads don't see as many visitors.
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