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Honda ST1100 Section => Brakes & Clutch ST1100 => Topic started by: Icor on March 30, 2016, 04:12:00 PM

Title: Gear crunching
Post by: Icor on March 30, 2016, 04:12:00 PM

When I try to go into 1st slowly I get a very loud crunching gear sound. I've changed oil in clutch and bled it. New oil in motor Penrite 10/40. If I push fast in gear to 1 from neutral quickly bike jumps. Never happens while moving  gear change is very good then.

Any ideas please

Title: Re: Gear crunching
Post by: STeveo on March 30, 2016, 04:38:32 PM

Sounds like you clutch is dragging.
Could be warped plates or the clutch basket 'fingers' have grooves worn in them that do not allow the plates to separate properly.
How many Km's on bike?

Title: Re: Gear crunching
Post by: Icor on March 30, 2016, 04:39:11 PM

Quote from: STeveo on March 30, 2016, 04:38:32 PM

Sounds like you clutch is dragging.
Could be warped plates or the clutch basket 'fingers' have grooves worn in them that do not allow the plates to separate properly.
How many Km's on bike?

57,000

Title: Re: Gear crunching
Post by: Icor on March 30, 2016, 04:39:49 PM

Sounds like a fair job to fix either way.


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Title: Re: Gear crunching
Post by: STeveo on March 30, 2016, 05:06:39 PM

Not really, clutch is on front of engine and easy to access.

Title: Re: Gear crunching
Post by: Icor on March 30, 2016, 05:15:03 PM

Ok thanks. I'll do some research on it. Is there any special tools needed.


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Title: Re: Gear crunching
Post by: Brock on March 30, 2016, 05:37:12 PM

Try doing a clutch fluid change firtst. Its easier to do.

You may have a bit of air in the line, or moisture that is preventing proper disengagement.

Next oil change, try a 25W50 oil, we dont need 10w40 unless in long term cold conditions ( like snow)

Title: Re: Gear crunching
Post by: Icor on March 30, 2016, 05:38:49 PM

That's Brock. I don't live near snow so I'll do both of these things in next few days. Any special oil. I've always used Penrite.


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Title: Re: Gear crunching
Post by: Abe on March 30, 2016, 07:12:17 PM

I used (always have) Penrite HPR30' 20-60w on my recent trip (>18000km) and never had an issue.

Also changed brake and clutch fluid prior to trip.

Now, 94,000km on the clock

Title: Re: Gear crunching
Post by: Icor on March 30, 2016, 07:16:54 PM

Thanks able I'll see if I can get some. I guess super cheap would be a good starting point


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Title: Re: Gear crunching
Post by: Abe on March 30, 2016, 07:18:56 PM

Sorry mate, yes I buy it from Supercheap

Title: Re: Gear crunching
Post by: Brock on March 30, 2016, 07:51:37 PM

I use Penrite HPR 20W50 (or 60) Diesel oil. It seems to work very well, the extra zinc helps quietening the gear changes.

Title: Re: Gear crunching
Post by: alans1100 on March 30, 2016, 08:31:23 PM

Quote from: Brock on March 30, 2016, 05:37:12 PM

Next oil change, try a 25W50 oil, we dont need 10w40 unless in long term cold conditions ( like snow)

Depends where you live - I'm using 15w-50 as some of our night temps get down to 0C or below during the winter months.

When I first got my 1100 I had trouble getting into first after an oil change - I put it down to a mix of different branded oils in the clutch; sorted it self out after a couple hundred km. Bike at that time had only 24,000 km now up to 183,000 km without having that issue again; no matter which oil I use.