Gears still thunking when shifting - Honda CTX1300 Forum
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post #1 of 21 Old 06-07-2019, 09:50 PM Thread Starter
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Gears still thunking when shifting

The gears are still going in with a thunk when shifting... I had talked to the service manager at the dealership that I bought the bike from, and he said that in his experience the transmissions tend to do this when full synthetic motor oil is used... sooooooooooooo, I bought the oil with the Honda label on it..... no change....

It really thunks going into 2cd...

All of this is way more than when I test drove the bike.....

How about you'alls bikes? and any ideas?

TD
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post #2 of 21 Old 06-07-2019, 10:16 PM
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I don't notice any excessive / unusual "thunking" in my bike after 21K miles.


I mostly used GN4 10W30, I briefly used full synthetic from Honda but I got the feeling this is better.
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post #3 of 21 Old 06-07-2019, 10:44 PM
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Never heard that about Synthetic oil causing thunking of gears. I have heard a lot of bikes, many using full dino oils, that thunk. Most of my last 5 bikes were Honda and I think that has more to do with it than the oil. They all would thunk more from the lower gears than the higher gears. Never really thought about it being a problem. Or maybe the thunking I've experienced was not as pronounced as what you are hearing or feeling? Always just thought it was a combination of being Honda transmissions and also the ratio change from a lower gear at a lower bike speed (not really RPM) since the thunking would almost be gone when shifting from 4th to 5th in my Gold Wing, and ST1100, and CTX1300. Sometimes I could find that sweet spot for shifting and there would be no thunking, but not always.
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prior and current bikes:
1973 Harley Davidson 125 dual sport- sold
1997 Kawasaki Vulcan 750- sold
1990 Honda Gold Wing GL1500- sold
2005 Suzuki Burgman 650- sold
1998 Honda ST1100- sold
2014 Honda CTX1300A (U.S.A. Ion Blue Deluxe)-sn: 489 - sold
2013 White Suzuki Burgman 650 ABS
2003 Honda Metropolitan CHF503 (wife's ride)
flickr photos of CTX1300A
Yep, that lone state of Maine is where I owned my first mc.
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post #4 of 21 Old 06-08-2019, 07:28 AM Thread Starter
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As long as there is no damage then its all good.... every no and then it has an issue trying to get into first or second also but not all the time.....

I wonder if its possible that the cable or clutch needs to be adjusted.... btw I have only a couple of thousand miles on the bike.

TD
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post #5 of 21 Old 06-08-2019, 10:39 AM
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I have always used Amsoil full synthetic oils in all my motorcycles and do not experience much thunking. Just because a mechanic says something it doesn’t have to be true. Using the proper grade of oil is the most important in my opinion. Most bikes do shift louder in lower gears than upper ones. Just normal operation. Now if the bike moves when shifting into first at a stop then you have clutch adjustment problems. Both my Magna and the CTX have been trouble free.
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post #6 of 21 Old 06-08-2019, 12:28 PM
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Sometimes yes. Mostly no.

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post #7 of 21 Old 06-08-2019, 09:28 PM
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My ctx was not shifting quite right. And it turns out the shifter pedal had loosened up at the pivot bolt . Removed the oil filter and tightened the bolt and fixed my shifting issue.
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post #8 of 21 Old 06-10-2019, 10:44 AM
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Shifting for me at times seems super smooth and at others makes me feel ever the rookie. I also notice that if I've been riding a lot my shifts seem to average more on the smoother side although the lower gears have more thunk than the upper gears for me. That leads me to believe most of the issue is me, not the bike. When at a stop I've developed a habit of double clutching to try and insure the bike drops into first gear a little more easily, and that helps avoid some clunking for me.

I follow a guy online - MC Rider, who produces videos every week with different topics about bikes. One of his more recent vids was about making your shifting more smooth. Naturally I had to try his basic method and sure enough it really made a big difference for me. I would guess that if I was to keep using the method that of course eventually it would be second nature and I wouldn't have to consciously think about it as I do now. My preference would be to forget all about shifting on my new DCT Goldwing Tour but as my spouse rightfully sees that as an extravagance, I think I need to continue to be quite happy overall with my CTX. If only I could get her to ride with me I'm sure she would see the advantages....

Anyway, here's a link to Kevin's video about shifting more smoothly:

https://youtu.be/Sy7dfAUh0hg
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post #9 of 21 Old 06-10-2019, 11:02 AM
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Wow - hope I got my point across! The website crashed on me and when I finally got it back open - three posts. Oh well..

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post #10 of 21 Old 06-10-2019, 11:17 AM
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Quote:
Originally Posted by bljdb View Post
Wow - hope I got my point across! The website crashed on me and when I finally got it back open - three posts. Oh well..
Fixed that for you.

/bob
prior and current bikes:
1973 Harley Davidson 125 dual sport- sold
1997 Kawasaki Vulcan 750- sold
1990 Honda Gold Wing GL1500- sold
2005 Suzuki Burgman 650- sold
1998 Honda ST1100- sold
2014 Honda CTX1300A (U.S.A. Ion Blue Deluxe)-sn: 489 - sold
2013 White Suzuki Burgman 650 ABS
2003 Honda Metropolitan CHF503 (wife's ride)
flickr photos of CTX1300A
Yep, that lone state of Maine is where I owned my first mc.
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