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Thread: High speed flutter
01-06-2017, 04:37 PM #1
High speed flutter
This owner complained about an unusual flutter (or chatter) while in 4th or 5th at 70 mph. When I test road it, I immediately noticed a vibration that got worst with speed. I could feel it in my feet and see it in both mirrors. At 70, a flutter could be heard, and when throttling off, it lessoned, and increased when throttled on. The owner described it as "play cards in spoked wheels." However, it was not nearly that loud.
To me it felt like a shaft not spinning true, and then spinning true. On this design, the shaft goes through the OEM swing arm. I wondered if the shaft was wallowing (no longer spinning centered causing a vibration) because of worn splines or a bad u-joint, and if so could the shaft be rubbing on the inside of the swing-arm tube (causing the flutter). After removing the shaft, a bad front u-joint was found and indeed there is evidence of the shaft rubbing inside the swing arm's tube.
Post Thanks / Like - 4 Likes
01-06-2017, 04:49 PM #2
Although things are serious they look like they were about to get real serious.
Is that yoke bent or did you open the joint area to make viewing the joint easier? A little hard to tell.
Either way it's time to put a new card in the spokes!
01-06-2017, 04:52 PM #3
Good catch Greg!! I'd always heard the inline driveshaft configuration was a big selling point for that kit. Food for thought with other owners to keep in mind.Jerry"Gold Rush" (aka: "SPOOK") San Angelo, TX
2015 GL1800 / Roadsmith HTS1800
TOI - IBA #23804 (SS1k & BB1.5K)
I'm like an old thoroughbred...... I can still run the race -
Just ache more at the finish line and need more rest between outings.
01-06-2017, 05:36 PM #4
That one was shouting for attention and being ignored for awhile I think.
01-06-2017, 06:54 PM #5
Sure glad you found before it got worse. Wonder how common that problem is?
01-06-2017, 07:55 PM #6
As the saying goes grease it every time you service it or you well pay the bill just a little goes along way.
01-11-2017, 02:13 PM #7
Rule of thumb ... never assume what comes "new" out of the box, fits, is correct, assembled correctly, and is good Basically, never assume anything about it !!! Prove it to yourself that it fits, appears to be good, and that it is correct.
Update ... getting ready to install new shaft assembly. But, when I checked for movement in the front u-joint, it has perceptible movement. I've contacted the trike manufacture and am now waiting for them to send a replacement shaft with good u-joints on both ends.
It appears this trike company starts with a complete, but used, GL1800 shaft assembly. Then they modify the OEM shaft by welding a rear yoke (or shaft assembly) to the rear of the OEM assembly. The rear part comes with a new joint. But the front joint is used ... which is fine, so long as they start with a good, modifiable, core.
Last edited by GoldWingrGreg; 01-12-2017 at 07:54 AM.
Post Thanks / Like - 1 LikesPapa Zook - liked this post
01-11-2017, 02:26 PM #8
What was the year of manufacture of the kit?2009 Goldwing/2016 CSC Viper Conversion
Traxxion AK-20 Suspension
01-11-2017, 02:37 PM #9
I believe the owner bought it used in 2004 from a trike dealer who was triking it at the time. If I recall the story correctly, the trike dealer bought it as a REPO. The Wing is a 2004 with 56k on the ODM.
01-11-2017, 06:16 PM #10
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