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Messages - gtmdriver

Pages: [1] 2 3 ... 18
1
CB500/550 / Re: Ethanol?
« on: September 03, 2021, 07:54:07 AM »
It's reasonable to advise people to just use a specific brand or grade of fuel but, if you use your bike to travel any meaningful distances, there will be occasions when you have no choice but to fill up with whatever is available.
On our UK tour this year we twice had to use E10 as that was all they had. Fortunately I've been carrying and using a tried and independently tested (by the FHVBC) fuel additive since they introduced E5 so I just add that and fill up regardless.

Additives just protect metallic components though. Rubber hoses need to be made from Bio-fuel compatible materials.

I've used these for a while and they seem to be OK so far with E5.

https://www.ebay.co.uk/itm/251182149018?hash=item3a7b9f6d9a:g:PNkAAMXQn11RffRU


2
CB350/400 / Re: Sudden Loss Of Drive. CB350F
« on: July 29, 2021, 07:55:08 AM »
Other side of the bike. The clutch is on the O/S of the bike. There will be further investigation of it's origin.

3
CB350/400 / Re: Sudden Loss Of Drive. CB350F
« on: July 27, 2021, 07:45:07 AM »
The M6 screw jammed the external linkage. It was outside the gearbox and jammed between the engine casing and the lever that the clutch cable connects to. Still need to find where it came from though.

4
CB350/400 / Re: Sudden Loss Of Drive. CB350F
« on: July 26, 2021, 07:27:46 PM »
The clutch was slipping for quite a while so the friction material may well have overheated. The plates, springs and a new gasket come as a kit from DSS for only £39 so I'm doing the lot while I'm in there. I'm also fitting a new kick-start oil seal as that was weeping slightly.

5
CB350/400 / Re: Sudden Loss Of Drive. CB350F
« on: July 26, 2021, 04:52:19 PM »
So I pulled off the sprocket cover and checked out the front and rear sprockets and splines then moved across to the RHS.
I drained the oil ready to remove the clutch cover then took off the kick-start and footrest.
As I came to release the clutch cable from its abutment on the cover I found the problem. An M6 Philips screw about 30mm long (origin unknown so far) had fallen and jammed between the clutch operating lever and the casing and was stopping the lever from fully returning so the clutch was stuck partially disengaged.
Since the clutch had been slipping for a while as I crawled home I decided to continue with the stripdown so that I could check the steel plates and renew the friction plates and springs.

It turns out that there isn't a ball bearing in the operating system. There's a short ball ended pushrod between the internal operating lever and the spring plate.

6
CB350/400 / Re: Sudden Loss Of Drive. CB350F
« on: July 25, 2021, 06:21:20 PM »
It's not so much the adjustment as the fact that it's suddenly changed.

7
CB350/400 / Re: Sudden Loss Of Drive. CB350F
« on: July 25, 2021, 05:27:21 PM »
Both sprockets are fine and the chain is correctly on the sprockets.

The feel of the clutch lever is the same BUT there is more free play in the cable at the lever than there was previous to the problem.

8
CB350/400 / Sudden Loss Of Drive. CB350F
« on: July 25, 2021, 04:26:32 PM »
I was accelerating the bike hard up a slight hill and when I let the clutch out in fifth fear the revs shot sky high and there was no drive.

At first I thought that I had missed the gear but I checked and it was engaged correctly.

I slowed down and tried all the gears and the symptoms are the same in every gear.

There is drive at low throttle openings but as soon as any sort of power is applied drive is lost completely.

It doesn't feel like clutch slip. A slipping clutch is usually less noticeable in the lower gears but gets worse in the higher gears. This problem is much the same in every gear. I'm wondering if I might have stripped something in the primary drive.

Are there any known issues which I should check first?

9
CB350/400 / First Show For a Long Time.
« on: June 14, 2021, 09:22:12 AM »
Had the CB 350F out to a show for the first time since lockdown started.

Early morning at the Scout Centre Newton Aycliffe near Darlington. Organised by Northern Bygones.


10
I'm currently using Carbusonic EP26R which I got from Amazon UK but I have used dishwasher LIQUID detergent in the past with equally good results.

Basically all you need is a detergent solution to break down the surface tension of the water to make sure that the object is totally wetted out. It's the shock waves from the bursting micro-bubbles which do the cleaning.

11
CB350/400 / Re: Ultrasonic cleaning carbs carburettor tips? CB400F
« on: March 21, 2021, 07:33:32 AM »
I usually dismantle the carbs but leave the bodies attached to each other as a single unit.

12
CB500/550 / Re: Powder coat and paint
« on: March 14, 2021, 07:38:38 AM »
Use washers under every nut and make sure that the washer has it's sharp edge facing away from the paint or powder coat. This helps prevent damage to the coating.

I was given this advice by my powder coaters.

13
Misc / Open / Re: Vacuum bags
« on: March 11, 2021, 08:06:27 AM »
On storing bikes I would appreciate any advice on stopping the clutch plates sticking, or am I the only one who has this problem?

Apart from making sure the oil is clean (if it's an oil bath clutch) the only thing you can do is to free it off every so often during storage. Put it in gear, pull the clutch and spin the back wheel or, if both wheels are on the floor, rock the bike.

14
Misc / Open / Re: Vacuum bags
« on: March 10, 2021, 07:44:08 AM »
I've used a bike bubble for years now and it's kept my CB 350F bone dry every winter. I guess it depends on the conditions it's used in. If it's sucking in damp air then the bike inside will get damp.

15
CB350/400 / Re: ht leads
« on: March 09, 2021, 07:28:56 AM »
You can get heat shrink or clip-on from eBay or Amazon.

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