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Post by zerot on Jun 30, 2014 17:24:19 GMT -6
First time the tranny broke the drive shaft was to long. So I shortened it up put a new transmission in new gear. Ran it 6 nights with no problems and then in the middle of the feature I snapped the drive shaft right in half like last time. Broke the ears off the transmission completely. Still had over 1'' of travel in my drive shaft. This boggles my mind. Pinion angle is 9deg downhill.
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Post by flipflopoo1oo on Jun 30, 2014 21:33:11 GMT -6
A spring pull bar and short left side bars do increase travel a lot when hiking or it may go 12 negative when lifting! J-bar angle may be getting it too sideways and rubbing to heat it up or putting it even closer! Hard to tell with all the flopping I bet!
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Post by startnonthetail on Jul 1, 2014 7:26:22 GMT -6
What kinda car is it? Sounds like too much angle to me.
For metric, I wouldn't go over 4°. For leaf, 6°.
Also, how are you measuring the angle? From pinion to floor, or angle between pinion and driveshaft? You should measure angle from pinion to driveshaft.
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Post by flipflopoo1oo on Jul 1, 2014 7:50:30 GMT -6
Our first leaf car was set at one degree up hill as to getting more torque with more angle comes leverage! Over sixty wins in three years like this and hooked to the max by it twisting harder going away! But that's just not how its done RIGHT!!! Don't tell anyone or even talk of this because they will think you're stupid!!! A bit side ways helps too if calculated properly! If lifting from lack of weight or hiking already, DON"T TRY THIS AT HOME OR THE TRACK!
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Post by Deleted on Jul 1, 2014 10:15:01 GMT -6
9Deg is a lot. I would agree that 4 deg is fine for metric, you dont get a bunch of wrap up on a Metric, and 7 is more than enough for a leaf car. If the ears are breaking on the trans, I would suspect a warped bell housing. Common problem that junks a lot of trannys before you figure it out.
Dave
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Post by flipflopoo1oo on Jul 1, 2014 20:56:08 GMT -6
Too much angle at the trany could be a factor but if breaking occurs the aftermath would break most anything! Is the trany on a mount or just hanging? All solid or rubber mounted? We had to spring load our left top bolt by putting a series of lock then flat washers and not compressing them all the way when running a standard! We broke several ears and cases before this! Splitting angles on both ends by opposing them seems to help also! Was the one inch not even used or one inch off the seal? Nine degrees when torqued pushes it forward more than one inch easily! You may need to check your yoke to trany as to depth of splines!
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