Cox Engines Forum
You are not logged in! Please login or register.

Logged in members see NO ADVERTISEMENTS!


Product recommendation Cox_ba12




Product recommendation Pixel

Log in

I forgot my password

Search
 
 

Display results as :
 


Rechercher Advanced Search

Latest topics
» Willy Nillie's Shoestring micro racer powered by COX TeeDee010
by 1/2A Nut Yesterday at 10:51 pm

» Scientific Gulfhawk
by 944_Jim Yesterday at 10:34 pm

» Feed Station Zebra.. Spring 2024
by NEW222 Yesterday at 7:47 pm

» Fun Times Keeping Busy With Lead.....
by NEW222 Yesterday at 7:10 pm

» Jim Walkers FireBee - This is going to be fun
by rsv1cox Yesterday at 6:41 pm

» Does this book interest anyone?
by rdw777 Yesterday at 2:58 pm

» tap.. tap.. tap.. tap.. tap.. tap.. (reset)
by batjac Yesterday at 9:57 am

» Sold out Cox .049 silencers for sale
by sosam117 Yesterday at 6:16 am

» OCD TV-a pictorial of modeling madness
by roddie Sat May 25, 2024 11:31 pm

» Top Dawg is Going to S.M.A.L.L.
by Kim Sat May 25, 2024 8:47 pm

» music vids.. some of your favorites
by HalfaDave Sat May 25, 2024 7:41 pm

» S1 Ringmaster
by GallopingGhostler Sat May 25, 2024 7:13 pm

Cox Engine of The Month
May-2024
1/2A Nut's

"Cox Tee Dee .051 RC Marine"



PAST WINNERS
CEF Traveling Engine

Win This Engine!
Gallery


Product recommendation Empty
Live on Patrol


Product recommendation

Go down

Product recommendation Empty Product recommendation

Post  fredvon4 Thu Oct 30, 2014 7:01 pm

IN other threads I have alluded to some of the cool tools or expendables I use

Doing the Tee Dee performance mods I polished the crank shafts with this stuff from MidwayUSA

http://www.midwayusa.com/product/896051/dmt-sharpener-dia-paste-diamond-compound-1-3-and-6-micron-kit?cm_vc=ProductFinding

Most of the Crank shaft modification folks, including Paul Gibeault recommend using Emory cloth around 600 or higher grit. I polity object as the clearance between the case and crank on Anodized or bushed engines on the smaller engines is critical.

The three grits of Diamond paste: Copper= 6 micron/4000 mesh/ Yellow= 3 micron/8000 mesh/ and Gray= 1 micron 15,000 mesh can be used to super polish any Cox crank shaft without reducing the diameter too much. (at least my expensive .0001 tolerance caliper sez so)

Just leave the bore of the anodized crank case super clean and do all the work on the crank shaft until you can barely notice very little (say again VERY LITTLE) side play...in fact I swap around until I find the  tight combination then polish/hone the crank until it has no real drag (heavy end falls down on it's own like Paul G suggests)

I use a small drill press to hold the Crank shaft at low RPM and use thin strips of heavy craft paper to put the Diamond paste on and progressively polish the shaft. Never ever put the crank in the case until you have hot water and soap (dawn) washed and dried the crank
fredvon4
fredvon4
Top Poster
Top Poster

2022 Supporter

Posts : 4002
Join date : 2011-08-26
Age : 68
Location : Lampasas Texas

Back to top Go down

Product recommendation Empty Re: Product recommendation

Post  RknRusty Thu Oct 30, 2014 8:41 pm

Thanks Fred. I'm going to be polishing a Norvel crank soon and I'll refer to your recommendation.
Rusty

_________________
Don't Panic!
...and never Ever think about how good you are at something...
while you're doing it!


My Hot Rock & Blues Playlist
RknRusty
RknRusty
Rest In Peace
Rest In Peace

Posts : 10869
Join date : 2011-08-10
Age : 68
Location : South Carolina, USA

Back to top Go down

Product recommendation Empty Re: Product recommendation

Post  fredvon4 Fri Oct 31, 2014 8:33 am

Rusty, like you, one of my Aero .049 Norvel engines just would not run right and from you and ken I explored and found a very tight crank to case condition. At the time I had a Pine Wood derby axle/wheel polishing kit that included a tube of diamond paste. That was what I used to make the NV sing properly. Later I found the Knife polishing kit at MidwayUSA with three progressively finer grits.

Since I don't have any mills or lathes or other metal working machinery, I find that I can make do with normal shop tools and good products like the diamond paste. Years ago I would use tooth paste or Bon Ami / Comet bathroom cleaners in wet slurry to clearance or polish tight fitting parts. This stuff is a tad pricey but a little goes a long long way and is easier to control than my use of abrasive cleaners

fredvon4
fredvon4
Top Poster
Top Poster

2022 Supporter

Posts : 4002
Join date : 2011-08-26
Age : 68
Location : Lampasas Texas

Back to top Go down

Product recommendation Empty Another recommendation

Post  fredvon4 Fri Oct 31, 2014 9:09 am

I love surgical blades over Exacto for many of my hobby projects

I get my handles and blades from Havalon
http://www.havalon.com/

Lower right is a Lowes Kobalt Exacto style kit with a decent selection of blades usually on sale for a low price

The photo shows variations of blades and the different handles for the Havalon stuff
Product recommendation Freds_15

Other folks can use this thread to post your great shop tools and product recommendations
fredvon4
fredvon4
Top Poster
Top Poster

2022 Supporter

Posts : 4002
Join date : 2011-08-26
Age : 68
Location : Lampasas Texas

Back to top Go down

Product recommendation Empty Re: Product recommendation

Post  Sponsored content


Sponsored content


Back to top Go down

Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum