Just wondering if anybody has tried the Helical end gears that Halibrand makes for the quickchange, after 500 miles this past weekend I was hearing quickchange noise in my sleep.
Helical gears are for pussies. I bet next you'll want roll-up windows. Switch that roadster body for a nice fordor sedan? I don't remember seeing any helical gears when that car was up-ended in "Hot Rod Girl". No need for them now.
I think you've earned the right to say that considering all the time you've logged riding in the rumbleseat of my "A" with it's Halibrand straight cuts singing to you at 65MPH!!! Wanna go for a spin?
I figured someone had to jump in and bust my balls on this one, I guess i"m getting old because I was actually considering a chrome 40 banjo rear. I guess I will take it back apart and check the lash on it because it's over noisy. I just put new bearings throughout the housing since the other ones were coming apart from being worn out.
Hunh, I can't her you, sonny. Speak up! Mine are straight cut, so I can't help you, BUT, you might try another set (borrowed, stolen etc.) and see if the noise varies or changes. Could be just the clearances on your particular set. You did check the lube in the rear section? Mine are pretty quiet.
I switched to a new set bought from Speedway, way quieter than the set I was running. I also think it has a lot to do with the ratio you are running. I put in a set of 3:08 for a long trip and they were quiet (cause it was running about 2400 rpm at 70-75 on the hiway) maybe? anyway I like a little noise when I back off it still sings a little.
I remember hearing that helicals caused problems because the case had no provisions for dealing with large end thrust loads on the gears. Anyone know about that?
That's what I understood, also. The gear tried to push through the back cover instead of floating. The newer mfg's might have a solution since they sell the gears.
I remember seeing somewhere (great qualifications, huh?) that you could knock the top corners off each tooth with a stone and they would quiet up a bit. Seems it would allow more lube to remain on the tooth, not get wiped of as much. If you have extra sets, give it a try.
I have helicals in mine. I took them out the other day and put the straight cuts back in to see how much difference there is. I could tell the difference before I got out of the driveway. The straight cuts in mine are terrible. Mine doesn't whine like some people say it screams! I would estimate the helicals cut the noise by 50%. I took the helicals and stoned all of the sharp edges off, and tried to make them work as smooth as possible. I think it helped some. I will know more after this weekend. I also put 80-140 Valvoline mixed 50/50 with Lucas gear additive. The helical cut gears require thrust bearings be put in the cover because the lead on the teeth pushes one gear into the cover. The also click every time you take off.
i'm glad i dont have to hear to type.i spent 20000 miles with strait cut gears in my hiboy,and boy is my hearing gone.for the past 64000 miles i have had halibrand helical gears in mine and the noise is very low.the wind and exhuast are louder than they are. if you are running a v-8 or a champ rear you need thrust bearing in the rear cover. if you are running a grand national,with the thick rear cover,they are not needed under street conditions. you can find the right bearings from winters perf.
I went for a ride in the Blue RPU on sunday, thats got a pretty loud quickie, mikes car on the other hand was not bad,although i'm sure its actaully just as loud as yours, you just cant hear it from inside the car.
As has already been posted,if you use the helical gears you have to use thrust bearings in the rear to keep the gears from chewing up the case and cover. Check with Speedway, they have them of can tell you where to get them. Frank
I have helical quick change gears and they are very quiet. A little note though, you need to change bearings because the ball bearings originally used in a quick change cannot take the axial loads you get from the helical angle on the gears, What you use is angular contact bearings which are ball bearing which have the runways grinded higher on one side enabling them to take axial and radial loads. These bearing are available in the same sizes as ball bearings. And since the gears will move in different directions depending on acceleration or deceleration you need to change bearing at both ends of the shaft, not just the cover, that is the front bearing of the lower shaft and the pinion gear if you are running a Halibrand, if you use a Ford pinion with the double roller bearing you're OK. And if you insist on using standard ball bearings, your gears will not chew up anything, before that happens you will have premature bearing failures.
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