Honda CB750 Sandcast

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Topics - toycollector10

Pages: 1
1
Parts Wanted / Wanted: Steering stem for 1969 diecast USA spec.
« on: May 02, 2023, 11:05:03 pm »
Asking for a friend. Located in New Zealand. Thank you.

2
General Discussion / Silicone brake fluid.
« on: April 02, 2023, 03:21:28 am »
I was on some forum or other and I can't remember what one it was but it was CB750 related. Everyone was saying use silicone brake fluid. Non hydroscopic and it will last forever. Well, old dumb##se here decided to use it. It seeps out of EVERY join in the brake system. Right down to going past the O ring that holds the piston so the crap goes out onto the brake pad on the left hand side. This was a 100 point restoration of the whole front brake system right down to black anodizing on the splitter. I despair at my own stupidity sometimes. This isn't the first time I've seen stupid posts on bike forums. For example Q: My bike runs like crap. A: Tear those carbs down right NOW!!! Rant over but hopefully someone will learn from my mistake Peace out.

3
Brakes / What does the correct brake rotor finish look like?
« on: July 17, 2020, 12:06:52 am »
I want to get both faces of my rotor machined smooth as they don't look too good. Does anyone have an image of what the finish should look like and also give me the name of the process so that I can phone around the engineering shops in town to see who can do the job for me.
I'm going to retain the black paint on the inner part but does anyone know how to clean up the rusty looking inner ring that has the chromed domes?
Many thanks, TC

4
I have these two sets. The stepped ones are off the November 1969 diecast I am restoring and I will be polishing them for installation. I've seen on this forum that all sandcast bikes have stepped.
The tapered ones shown take sandcast guards. They also take 1969 and probably 1970 diecast guards so at what point did Honda transition to tapered? I believe that K1 forks are completely different.
I will be selling the tapered ones as "fits 1969 and 1970 Honda CB750"....
Also, I believe there is a third type which are  similar to the tapered but they have a shorter taper so they are a cross between the two. I would be interesting if someone posted up a picture of that variation for reference purposes.

5
I borrowed this tool off a friend and it worked really well. Pictures below.

6
Parts Wanted / Orange foam scraps wanted
« on: June 25, 2020, 08:25:32 pm »
Hello all,
Yamiya (I think it was) used to sell rolls of orange foam that you could place on your seat pan prior to recovering. There's none on their website now. If anyone could sell me enough to cover the holes in my base I would appreciate it.There's just the three holes at the rear under the ducktail and then a line running down the middle.  Also, should the strips of foam running left to right above and below the orange strip in the middle of the seat be creamy yellow or white for a 1969 diecast? Many thanks, TC

7
General Discussion / Do I have a fork'n problem
« on: June 07, 2020, 12:06:37 am »
Hi guys. I need to replace both front fork covers on my 1969 diecast as they are damaged. Are these forks correct for a K0 or are they later ones that fit? i.e. K1   Note the cast flange on the left hand one. For interest  I have added an image of the dry biscuit like crud that was on the bottom of one of the covers. For some reason the pictures are very large when you click on them. To reduce the size press down on the keyboard key "ctrl" at lower left and use the middle wheel on your mouse to scroll up and down in size.

8
Parts Wanted / Seat pan/base
« on: January 01, 2020, 07:31:30 pm »
Hi, can someone sell me a seat pan in restorable condition. It's for a 1969 CB750 K0. I have a seat with restorable vinyl but the pan has been messed with for a chopper or other model of motorcycle. I think it's too far gone for me to start grinding away at it & etc. Many thanks, TC, New Zealand

9
General Discussion / The Brighton Bike
« on: November 25, 2019, 03:08:37 pm »
Hi, this article appeared on my Facebook page. Could the administrators archive it for future reference? Cheers, TC, New Zealand
https://www.kb-style.fr/dossiers/honda-cb-750-k0-sandcast/honda-cb-750-k0-sandcast-ventes-record/?fbclid=IwAR2S0A0Vb6KPk3jvEeVvrLbbFOp18IIm4v-NQgTaaqzd3eRsYugHvER8VB4

10
General Discussion / The USD $1500 eBay listing for a July 1969 parts manual
« on: September 16, 2015, 04:27:48 am »
https://www.youtube.com/watch?v=jL2DH-nKBeA

And just in case you're confused about "dreaming" it's typical Aussie/Kiwi banter/slang...i.e.

https://www.youtube.com/watch?v=UT6oZqYij8U

11
Hello sandcast fans. I've a diecast K0 frame number 12300 and I have a few questions:

1. I want to fit a Yamiya short chain guard for asthetic reasons. Would this be correct for my bike?
2. I want to fit a double cut front guard. Would this be correct for my frame number?
3. The Yamiya double cut appears to be the guard of choice. However, with the New Zealand dollar at just .65 USD and factoring tax when landed at 15% and freight the cost comes out to around $1500 NZD or approximately $1000 USD. It's just a bridge too far. So has anyone an opinion of this manufacturer below?

http://www.motorcycleseatsdirect.com/1969-Honda-cb750-cb750k0-sandcast-front-mudguard-fender/

The one from Vietnam would be $468 NZD landed but I don't like the paint on the underside.

http://www.ebay.com/itm/Honda-CB750-K0-CB750K0-Double-Cut-Sand-Cast-Front-fender-1969-/301691074846?hash=item463e30791e&vxp=mtr#shpCntId

Any comments would be much appreciated.

Or, does anyone have a repairable guard they could sell me?

Thanks, TC10


12
Like a mug I didn't buy any of kp's hoses when I had the chance. What's happening with the hoses? On eBay most of them appear to have a black anodizing on the metal parts. Even the ones on Yamiya750 appear to be "blacked off" on the ends and the brake pipes also look to be black with Bright Zinc Plating on the ends. My question is: Who can supply original looking hoses and a pipe, that is, that have the metal end parts in Bright Zinc Plate finish? Regards, TC10

13
I'm selling these as my diecast will be a rider. It's a waste to put the sprocket on a bike that will be ridden hard. I'll probably regret it later,  but....   I can combine shipping. I don't gouge for shipping, the cost is pretty much an estimate and if it's any cheaper I'll refund the balance to your PayPal account.

http://www.ebay.com/itm/Honda-CB750K0-45T-sprocket-NOS-unopened-bag-41204-300-000-sandcast-1969-1970-/111711020713?hash=item1a027ee6a9&vxp=mtr

http://www.ebay.com/itm/Honda-CB750K0-sandcast-NOS-bagged-unopened-headlight-rim-Stanley-33101-300-673-/111711029647?hash=item1a027f098f&vxp=mtr

14
General Discussion / Pre-production Sandcast tools
« on: March 02, 2015, 11:53:57 pm »
Could someone please educate me about this eBay listing.

http://www.ebay.com/itm/291395861669?_trksid=p2060778.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

Thanks, TC

15
I've been lurking around for a number of years so thought it was time I joined. I own a November 1969 diecast K0 with engine late 11,000's and frame early 12,000's. As these bikes are extremely rare in New Zealand I had to import one off eBay out of San Francisco. I use it on the odd track day and also regularly on a monthly basis. Also, the group of riders I'm with do an annual three day group tour which I go on. I damaged the bike on the last tour so I'm going to do a comprehensive cosmetic restoration using mostly Yamiya parts. I've started here:

http://forums.sohc4.net/index.php?topic=137661.0

I'll post up some pictures of the freshen-up as I go. It won't be totally correct and as stated there will be reproduction parts but I'm not making excuses, she's ridden often. To be honest I don't have the cash for a sandcast, or rather I would have, if my motoring interests weren't spread so thick. I have another bike (1973 Kawasaki Z1) and a 1971 Datsun 240Z sucking up cash.

I probably won't have a lot to add to the forum but I'm very grateful that there is such a wealth of knowledge here for me. I have spent and will spend lots more hours looking through the posts and website so that I can at least do the best I can for my old Honda.

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