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Messages - BenPowell
16
« on: May 31, 2023, 08:46:44 AM »
Great work Ben. Do you think you will have the bike on the road before the end of summer as the end goal 🙂
That’s the plan, still need to do my test and get it registered though 😂
17
« on: May 31, 2023, 07:47:28 AM »
Read your whole project post again - very interesting rebuild - my heart sank when I saw the camshaft bearing worn oval.
How did you fix that in the end ?
Yeah the camshaft bearing was really bad, considering the condition of the rest of the engine I wouldn’t have expected that, in the end I managed to get hold of a NOS cam bearing, failing that i was going to bore it out and machine a bush. I think it could be done fairly easily, unfortunately I don’t have access to a lathe anymore since I’ve moved jobs, I would like my own lathe at some point and I’ve kept the old bearing so might get chance to have a go in the future, just to see how feasible it is.
18
« on: May 30, 2023, 10:20:48 PM »
Hi everyone,
It has been far too long since I’ve posted an update on here, but I have been working away when i get chance.
The bike is really coming along nicely, and although I would have liked to have it done by now I’ve still got some work to do. I’ve attached some current progress pics 😁.
In the background I have been looking at paint options and after loads of research and suppliers messing me about I have finally made a decision, which is candy red over white base as stated in the Honda bulletin in this thread a while back.
I had a go with the paint on some spray out cards over the weekend and compared it to a NOS fork ear which I bought a while back. See pic below.
I’m over the moon with the match and in the light the candy red over white gives a depth to he paint which makes it pop, shame it can’t really be picked up on camera.
All the parts have now been primed with epoxy primer and waiting to be painted in the next few weeks, just need to clear some space in the shed. 🙄
19
« on: August 23, 2022, 08:54:35 AM »
Hi everyone,
Been a while since I’ve put some progress photos up, had a fairly busy summer so far so probably not as far along as I’d like to be.
Engine is now back in the frame, got a few little bits to sort out before it’s complete, currently working my way through the wiring loom quite a long job since I’m mechanically biased, but getting there.
I’m really happy with the way the bike is looking so far.
Question: the bike is imported so will need a dating certificate and registering etc has anyone done this before the bike is fully completed and did it cause any problems, I’m keen to get it done so as soon as it’s ready I can get insured and out on the road
Thanks
20
« on: August 23, 2022, 08:50:39 AM »
I got the the tray drawn up in CAD so I have the file, but not had a go at printing yet.
21
« on: May 11, 2022, 09:29:19 PM »
My CB250K had phosphor bronze bushes put in as a modification. I replaced them in 1985 with standard ones as they had worn out. I don't know how long they had been in there as they had been done by the previous owner but they looked like a good bit of work. I still have them somewhere, will try to dig them out.
If you find them some pics would be great, just to see roughly how they look, I plan on putting some miles on the bike and as I said I was lucky enough to to get a NOS cam shaft so I want to make it last. Good progress Ben. That bearing is the worst I have ever seen! The
guy who owned the engineering shop I used to use for rebores (now defunct) was working on a cam bearing shell conversion just before he closed down. He was having trouble getting the clearance correct and staying in place and not spinning when the engine got hot. Hopefully someone will be able to advise of the clearance you need.
Yeah it’s quite rough, when I got the bike there was a screw missing from the side cover, which caused an oil leak, so guessing it’s been run low for some time, only 8000 miles on it though, on the other hand the leaking oil kept the frame from rusting. I’ve got an idea on how to get it to stay in place, it would be a case of making the bush thick enough that when pushed into the housing I can make a drilling on the join line and insert a dowel then finish bore it to size, and for improved lubrication i can cut a spiral into the bush to get the oil flowing better, or even a couple radial grooves might help. Clearances are important to get right, I know a lot about clearances for water hydraulic bearings but not oil unfortunately
22
« on: May 11, 2022, 08:25:50 PM »
Hi everyone, Thought it’s about time for another update, I’ve had a productive few weeks and since been back on my 125 which I bought new when I was 17 I’m itching to get on with the CB350 project. I know this topic has been discussed on here before but i was really having some difficulty in picking a colour to paint the engine, anyway I ended up trying about 5 maybe more different brands and methods before finally settling on one which I preferred which was the Dupli Color DE1615 and surprisingly a close second choice to that was the Halfords aluminium engine enamel. I also tried simoniz, auto tek and rust oleum but for me it didn’t look right. Some images below of the painted engine. For anyone interested in the Dupli-Color I did two light coats followed by a third medium, painted in a warm room with 10 minutes between coats. Then once touch dry approx 1 hour I baked in the oven at 100 degrees C for 1 hour. (Not my kitchen oven though  ) Next topic, cam shaft & bearings. I was going through my parts checking for obvious signs of wear and my camshaft was looking a bit rough, some scoring/pitting and heavy wear on a couple of rockers, luckily I managed to find a NOS cam shaft but I need to either replace or modify the bearings since the one I have is past it. Think the bike might have been low on oil for a bit  I’ve heard about the roller bearing mod but has anyone ever bored out and re fitted a brass/bronze bearing into the aluminium housing? I’ve got the equipment to do it at work but I haven’t yet looked at what the clearances should be or if that information is available. Hopefully I should be getting the engine together soon and getting it back in the frame, which will be a big milestone. Cheers,
23
« on: March 20, 2022, 10:06:41 PM »
Hi everyone, Been a few weeks since I’ve posted an update on the restoration, I got the frame and a few other parts back from painting and it gave me a bit of a needed kick to get on with the bike. Forks have been stripped, cleaned and rebuilt with news seals and some fresh oil, actually feels like they have some damping effect now so that’s good Rear shocks were beyond repair, although from the surface they looked good, it turned out the seals were weeping and one of them had a broken plastic sleeve, anyway got a new shiny set now. One job I really enjoyed doing was lacing up the front wheel, I’ve been putting it off because it’s something I’ve never done, but I watched some videos and had a go and it went really well. Just need to true it up at work on Tuesday, although I had a quick spin and it really isn’t back at all. One thing I need to ask is what everyone does about buying hex bolts, nuts, washers etc, every time I look there’s always a min quantity of say 50 or 100, is there an online pick and mix type or at least one anyone has used in the past for smaller quantities? I’ll put some pics below of the progress Next job, getting engine parts ready for paint Thanks
24
« on: February 22, 2022, 10:33:05 AM »
Yeah I think the US will be the best option, gonna have to bundle a load of bits together to make it worth the shipping cost. Suppose it’s an excuse to buy more stuff though
25
« on: February 21, 2022, 07:51:04 PM »
Hi everyone,
I’m after the seat catch for my CB350 K3, the half which attaches to the frame, I believe they was only used for the K3 model so fairly hard to find unless I get one from the states.
Does anyone have a spare one they are willing to sell?
Thanks
Ben
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26
« on: January 29, 2022, 12:54:36 PM »
Hi everyone,
Had a rare bit of free time today and got the rest of the components off the frame, so finally I have a bare frame and parts which I can start getting ready for painting. I have a question though, when I tipped the frame upside down to remove the footrest bracket I noticed a puddle of water which came out of the head tube/steering tube. Thought it was a bit odd I’ve had the bike about a year now and it has been stored indoors since I bought it. Condensation maybe?
Has anyone else had this and would it be worth adding some drain holes near the bottom of the frame? I don’t like the thought of water being able to get trapped in there.
I was thinking about using some dinitrol cavity wax/rust converter on the frame, and I think I definitely will now.
Cheers
27
« on: December 13, 2021, 08:47:30 PM »
Don't know if you have interest in copying it in detail, but know that 83501-323-020 originally had a small 'enclave' to accomodate spare fuses.
And of course the separate bit that holds the mesh over the oval cutout will also add to the work. 83502-323-000
The tray looks awkward to print as there are bits above and below the tray. Presume it will need support pieces. Took a look at it here and decided against it.
It will be a bit tricky without a doubt and certainly will need some support material, having said that I’ve done some awkward stuff for work so I’m willing to have a go at it. I have the separate part which holds the mesh on but will finalise it once I’ve got a tray printed, so I can make sure it is a good fit.
28
« on: December 13, 2021, 11:48:22 AM »
I will be adding it in, should only take a few minutes, got holes and some supports to add as well.
29
« on: December 13, 2021, 12:20:48 AM »
Hi everyone,
I had some time tonight and I have drawn up the tool tray, still some small details to add but the tricky bits are done.
I will print off some 1:1 scale drawings to check the angles match and the shape is correct, hard to get exact measurements with thin moulded parts as they distort slightly.
If anyone is seriously interested in one of these 3D printed can you let me know, I won't spend to much more time on it if not. I'll need to add the finished file into the 3D print software to find out material usage and time to print etc.
Some images of the CAD model so far
30
« on: December 08, 2021, 06:38:23 PM »
Yeah, I’ve tried the acetone vapour method, but only once so far on a small part for work. Bit of a test really just to see if it would work, so a lot of improvements to make. I think it would help to give the part a quick sand before vapour smoothing with it being thin I would worry about it loosing it’s shape if it’s in there too long.
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