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Motor mounts - talk to me

Motor mounts - talk to me

micathia
4 years ago

I already pulled the trigger. Now waiting for them to come.

micathia
4 years ago

I can certainly tell you what I am thinking now.
This stuff is still new. It could be a revolutionary technology for Harley or it could ruin some early customers' bikes. Their rear isolator only entered market for six months.

Wire mesh is not a scam. It is a true technology that is used by other types of the engine mounts, including aircraft. And it is supposed to be better material than rubber.

BUTT, that youtube video really looks scary to me. A vibrating engine looks static after. I don't know how this could affect the engine's life in the long run. And according the owner, he doesn't even know how long this product can last before wearing out. If it starts wearing out after 200,000 kms. I 'd happy they double the price. If it starts wearing out after 5000 kms, it's not feasible then.

Grease Monkey
4 years ago

I hope it works for you micathia, certainly looks to be controlling the engine in that video, but let's see how it holds up in real world riding with everything swinging off it.
Edit, good to see they shimmed the mount on install.

micathia
4 years ago

micathia
4 years ago

have my local shop put them on today. Here is the before and after:
Before:
1. My bike is late model dyna (2016) with OEM front and rear mounts. The OEM mounts are not too bad, once they were taken off, I had a look, still good ones. The rear one even looks like new. So you might consider just replace the front.
2. My bike wasn't shake as bad as I can't even see anything through mirror with the OEM mounts.
3. terrible alignment issue, in order to track true, I pulled right end of rear axle backward 6mm compared to the left end, otherwise the bike will dog walk.

After front and rear installed:
1. The most positive result is the bike becomes more stable. Where going into cornering, the weird extra shake that gives you small "oops" is gone.
2. The overall vibration did not reduce (although the engine vibration reduced visually), just a different pattern. Idle vibration is lower, but low to mid rpm range, vibration becomes steady, instead of gradually reducing while rpm is up. Didn't try high range, I rarely ride at high range.
3. Fixed my alignment issue 99%. The bike tracks true while wheel is aligned with swing arm.

So this stuff will stabilize the bike for sure, but maybe not vibration reducer, not my case. I didn't experiment the shim though. Just put both in straight away. This is new product, no data shows how long they can last. If they can last for 50,000kms, then it worth the money, otherwise not.

micathia
4 years ago

Just another update after couple of days of riding.
Obviously my local shot didn't install them according to the torque value. So they just screwed tight. It could be a problem. So re-torque those engine mount bolts, not frame bolts.

Before re-torque,
1. the 3rd gear became a bitch. I wanted to get rid of 3rd gear overall. If your main riding is around city suburb 60 to 70, then you would want to uninstall these mounts immediately.
2. my hole (one for me, ladies have two) felt constantly massaged.
3. cornering became more stable, more on handlebar.

After re-torque,
1. vibration level you feel seems go back to OEM mount;
2. but by looking at the engine itself, engine and air intake look deadly steady;
3. cornering is still more stable but maybe more vertical vibration on the rear now.

So if you are interested in this, I recommend you only buy the front mount and use it with OEM rear. It could be better overall. At least, by comparing my experience with other people who had only installed the front, I don't see my rear mount add much positive feedback.

The idea of re-torque is, you make the engine bolts a little bit more loose than frame bolts. So the engine is actually bouncing around between the mount. If engine bolts are just "tightened", then all bad energy will be transferred to the frame.

micathia
4 years ago

Just another update,
Done three runs since Monday, going to work, going home then going to work again. It seems three times the vibes were different each time.

The first run was smooth. Then second one was ok but bit worse. This morning was terrible. I got run on 5th gear at 60kmh. Due to the rain, my bike and covered with full mud right now. I don't know if the water or even mud changed its physical properties.

I will try put rear mount back to oem and take 1 shim off the front. That's the setup of a very positive feedback from hdforums.

speedzter
4 years ago

Keep us updated.
Hope you get it sorted.

The Video from Kinetic proves to me how wrong their design is.
Showing the after video with no engine movement proves the vibration must be transmitted to the frame.
As we know, the Dyna engine is unbalanced, and it needs to move in the frame to isolate the vibration.
The trick for good handling is to add a lateral stabilising link arm front and rear.

fatbat
4 years ago

Quoting speedzter on 19 Aug 2020 05:07 AM
Keep us updated.
Hope you get it sorted.

The Video from Kinetic proves to me how wrong their design is.
Showing the after video with no engine movement proves the vibration must be transmitted to the frame.
As we know, the Dyna engine is unbalanced, and it needs to move in the frame to isolate the vibration.
The trick for good handling is to add a lateral stabilising link arm front and rear.

Agree with speedzter and that’s why many dyna owners keep the factory rubber engine mounts and then add the positrac or truetrac to stop lateral engine movement

GGUser43
4 years ago

Any other feedback on the kinetic ?

Birtyyy
4 years ago

Also interested to know how it's going 2 months later? I'm new to Dyna's and the low rpm vibrations are crazy.

Krash Kinkade
4 years ago

Quoting Birtyyy on 28 Oct 2020 09:48 PM
Also interested to know how it's going 2 months later? I'm new to Dyna's and the low rpm vibrations are crazy.

Birtyyy , i had a twin cam dyna for around 12 years, now a mates son had it. Like Speedster posted, the trick is add lateral stabilising front & rear. you will feel a gain. & improvement in handling.

Birtyyy
4 years ago

Quoting Birtyyy on 28 Oct 2020 09:48 PM
Also interested to know how it's going 2 months later? I'm new to Dyna's and the low rpm vibrations are crazy.

Quoting Krash Kinkade on 28 Oct 2020 10:20 PM
Birtyyy , i had a twin cam dyna for around 12 years, now a mates son had it. Like Speedster posted, the trick is add lateral stabilising front & rear. you will feel a gain. & improvement in handling.

This is exactly where I am getting confused. Half of the discussion I see is about improving handling and stopping the high speed wobble and then others are just looking to dampen vibrations. I've done almost 5000kms since I've had it and a wide range of riding and handling hasn't been an issue, it's only the below 2500rpm vibrations that are shaking the fuck out of the bike and me! I actually went and got a tacho (mine didn't come with one from the factory) just to be sure I wasn't lugging the engine because the vibrations felt unnatural.

robots
4 years ago

Try the service bulletin first

Shave top of mount, then shim with washer.

I have the sputhe and only noticed a bit more stability at higher speeds. This on fxdwg not fatbob/streetbob/superglide geometry.

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