The Ford Barn

Double Trouble · 04-28-2013, 01:13 PM

I thought I was going faster than it read. Why is it out by 15MPH.

Could it be the wrong speedometer gear set (the driven gear is stamped with the ratio) or just a bad speedometer?

lookin-backtexas · 04-30-2013, 06:14 PM

I enjoyed reading through all the posts with everyone trying to help determine why the truck wouldn't go faster than 25 mph and with all the fine tuning advice post after post, this should be required reading for any new Model A'er to learn how to diagnose problems - they will learn a lot of helpful info. Then at the end we find it's a faulty speedometer. Sort of the "Why won't my Model A start?" story and after multiple good Samaritan's advice of fiddle with this and fiddle with that, someone discovers they forgot to turn the gas on or key on. ha As a Model AA owner myself, if Kane couldn't tell the difference between going 25 and 50 in a AA, he must have some really good shocks! When I get mine up to 50 you really know it's hauling A _ _ and bounces all over the road.

roblesterjr04 · 04-21-2015, 10:47 AM

Quote:

Originally Posted by KANE MCAFFER

So my wife tells me about this application you can get on your iPhone. A speedometer. She says it works exactly accurate. I'm like ya right...... So I try it. I turn it on and go for a drive in our brand new mini van (don't tell anybody I have one of those), and it id dead accurate!!! So I thought I'll try it in the Model AA. Turns out my speedometer is out to lunch. When it reads 35 MPH I'm actually going 50MPH. So I must have the high geared diff. I thought I was going faster than it read. Why is it out by 15MPH. Again running 6.50x20 all the round. As odd as that is this is good news, plenty of speed for me!!! Still chugs gas though, and I'm pretty sure the gas gauge is ok, but.........

Way behind on reading all of this... but thats classic.

How did you make out in the end? Did you ever get her running like a top?

04-28-2013, 01:13 PM	#121
Double Trouble Member Join Date: Nov 2012 Location: Land of Lincoln Posts: 32	Re: 1930 Model AA Cant Get Her Over 25 MPH I thought I was going faster than it read. Why is it out by 15MPH. Could it be the wrong speedometer gear set (the driven gear is stamped with the ratio) or just a bad speedometer?

04-30-2013, 06:14 PM	#122
lookin-backtexas Senior Member Join Date: Jun 2011 Location: Georgetown, Texas Posts: 396	Re: 1930 Model AA Cant Get Her Over 25 MPH I enjoyed reading through all the posts with everyone trying to help determine why the truck wouldn't go faster than 25 mph and with all the fine tuning advice post after post, this should be required reading for any new Model A'er to learn how to diagnose problems - they will learn a lot of helpful info. Then at the end we find it's a faulty speedometer. Sort of the "Why won't my Model A start?" story and after multiple good Samaritan's advice of fiddle with this and fiddle with that, someone discovers they forgot to turn the gas on or key on. ha As a Model AA owner myself, if Kane couldn't tell the difference between going 25 and 50 in a AA, he must have some really good shocks! When I get mine up to 50 you really know it's hauling A _ _ and bounces all over the road. __________________ Fred Carlton Life Member AACA 44 year member MAFCA Editor of The Restorer magazine, official publication of MAFCA 12 years Life Member Dallas Model A Ford Club (44 years) 23 year member & founder Lone Star Model A Ford Club Chairman 35th Model A Ford Texas Tour 1998 (state convention) Chairman 42nd Model A Ford Texas Tour 2005 (state convention) Charter Member Ford Model AA Truck Club If you aren't driving your antique car frequently, you might as well be collecting clocks!!!