Coastal Model Car Racing Club

gearing1983 · Joined: 08 Mar 2008 Posts: 63

well its in the title but ive noticed that some cars are so much quiter than mine is that because the gear hasnt meshed properly or im running on 48dp rather than 64dp an suggestions will be helpfull as usual

markw · Joined: 08 Mar 2008 Posts: 144

wen running 64dp u can get better gear ratios then wen running 48dp the down side of running 64dp is u got to mesh right coz it will bugger the teeth up. i think alot of racers at ipswich run 48dp..

u said some cars r more quiter then urs make sure everything on the car is running free (eg) bearings r clean no grit on the spur gear , diff pulleys. drive shafts are not bent and nothing is binding on the car.

hope this helps im sure some people will add to wat i said or say if im wrong

gearing1983 · Joined: 08 Mar 2008 Posts: 63

thanks mate

No. 46 · Joined: 10 Mar 2008 Posts: 78 Location: Hadleigh

As mark said 64dp allows for more accurate gear ratios, but unless your a real perfectionist its really not needed. Your noises will be from the mesh being to tight or coming from somewhere else and as long as the transmission doesn't feel tight, its not really worth worrying about. Just check all the bearings to make sure they rotate freely.

admin · Posted: Fri Jan 16, 2009 8:19 pm Post subject:

Although 64Dp allows finer adjustment of ratios, you may find if the mesh is not perfect you will strip the spurs easier. I know I did years ago with a corally!

Personally 48P I think is a good comprimise, a bit harder wearing even if the ratios are not quite as close (less spurs & pinions required though!)
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mattr · Joined: 11 Apr 2008 Posts: 5

48for sure is the safer option. Would never use 64dp again as the last time i did 2 spurs in one meeting