is it wise

75oldschool · #1 13th February 2005

don,t have a tach on my 75 is it wise to have one and what should rpms be for it 4speed

flathead45 · #2 13th February 2005

don't have one on my 72 either , you'll know by ear if ya go too high

alleydude · #3 13th February 2005

I get 3500 rpm's at 60 mph. Hope this helps.

bamf_shadow · #4 13th February 2005

In case you want a tach, I have a stock style one for sale, and I also have the sending unit and cable. Email me at bamf_shadow@yahoo.com if interested.

75oldschool · #5 13th February 2005

thanks for info i do use my ears just kinda wondering what rpms i'm at most of the time.especially in fourth gear when i'm over 60

flathead45 · #6 13th February 2005

65mph on mine sounds a bit high in the revs but thats just my feelings , old iron wasn't ment to run highways at 65 really , I mean they can do it its just that they were made in an era of 55 so the final drive sproket was a bit small so I put in the biggest one I could fit and that helped a bit (maybe 500 r's)

alleydude · #7 13th February 2005

If your gearing is stock, I believe your ratio is lower. You might be closer to 4000 rpm's at 60 mph, but I might be mistaken.

75oldschool · #8 13th February 2005

thanks shadow i was just looking at that in the classifieds maybe after i get back in town noticed you had shocks to how old are they mine are some ones when bike was built and are they stock length

willprevale · #9 13th February 2005

I've been at this for over 30 yrs and haven't had a tach on any of my HDs. Can't say I miss it. Don't know any better I guess.

75oldschool · #10 13th February 2005

ya stock gearing still trying to get used to four gears allways looking for one more