Aero speedo woes

[code47mastermind]

I recently bought an 86 Aero 50 which did not come with a speedometer cable.

I just got one in the mail off of ebay and when I hooked it up it makes a LOUD noise from the speedo while moving

at first, It sounded like the cable was spinning inside of the speedo housing and creating the sound but that is not the case

while accelerating, after maybe 5-10 mph, the speedo shoots up past 35, as far as it will go... looking like I just accelerated like a bullet

[capturedbyrobots]

Did you grease the heck out of the cable?
Sounds like it was binding up, then releasing causing the spike.

[GIJoeBob]

Yeah, lube the crap out of it.

Does the fitting on the speedo itself rotate freely?

[code47mastermind]

yep, that was my problem
it's now packed with grease and works flawlessly

thanks guys

[adark248]

mine totally pooped out the other day. just stopped working on a ride