whining/whistling noise

edoggdoremus · Post by **edoggdoremus** » Tue Jul 17, 2007 11:39 pm

well i just got my honda gyro on the road running good. Only problem is after i get up to 10mph and above there is a whistling/whining high pitch noise. Once up to full speed it kind of goes away but when applying brakes and slowing down it comes back. There is no grinding noise, just the high pitch.

I figure it has something to do with the clutch. Any ideas? Where to start looking?

chevyguyjay · Post by **chevyguyjay** » Wed Jul 18, 2007 2:53 am

is your crank case(gear/clutch box) all the way full with oil?

throw up some pics.

like to c it.

what year is yours?

edoggdoremus · Post by **edoggdoremus** » Wed Jul 18, 2007 3:17 am

i thought it was last time i checked, i'll check again. It's a 1984, had bent forks and needed to be decarbonized, but i got it back on the road. Post pics when i get them, planning on painting it soon.

Also I think my bystarter went bad. Engine started first try every time before taking apart carb and cylinder, now won't start on cold starts, need to prime it, but runs great and starts good after warmed up.

Anyone know if a Gyro shares the same bystarter as a spree?
Is it possible to put in a bystarter wrong?

chevyguyjay · Post by **chevyguyjay** » Wed Jul 18, 2007 7:34 am

yea, just take a quick peek at the gear box and make sure its full. the bystarter is the same as a spree. i have a 84 too. cant wait to get it on the road.

just curious, whats the top speed on yours? does it have pretty good take off?

edoggdoremus · Post by **edoggdoremus** » Wed Jul 18, 2007 11:11 am

Just added more gear oil this morning, a little low. Havn't ridden it today though as it is pouring down rain here.

My gyro goes about 33mph on flat. Take off is pretty decent, much better than a spree i think. Has a 2 gear transmission, kind of cool when it shifts.

I am riding with a pretty gunky muffler and a dirty air filter right now though, I'm assuming that cleaning those out will give me a little better performance.

There's also some info out there that replacing the dished piston with a domed piston gets you around 3mph of more oomf. Think i'll order one pretty soon here to test it out.

edoggdoremus · Post by **edoggdoremus** » Sat Jul 21, 2007 5:08 pm

there is still a whining noise. when i apply the brakes it gets louder as the engine quickly slows down. any ideas?

mousewheels · Post by **mousewheels** » Mon Jul 23, 2007 11:01 pm

Hi,
Sorry - been on vacation. Could be the transmission gears. The gears are straight cut on the Gyro. TG50's and NN50's both can whine pretty loud due to gear noise from my experience. I took apart my TG50 w/12k miles to check the clutches and gears. Had another set from a spare engine that I could have swapped in, but the parts didn't look that worn. So I put it back together and am driving it. But the whine is clearly louder than my 1k NN50 Gyro. Its pretty high pitched and clearly audible over the exhaust.

Re Bystarters:
A friend and I have had success using Spree and Elite bystarters in our Gyros. There's been no Gyro bystarters around for a few years....

myhonda · Post by **myhonda** » Tue Jul 24, 2007 4:54 pm

i know this sound. one of my peds is doing this ive led it down to a bad bearing in the final gear assembly. maby u got a bad bearing