Help me with a slipperential & mount for my savage please.

[Jahay]

I was considering doing that finnster with the braces but it if i can find another way of mounting it i would be happier.

I know this is a silly question, but i have never tried tapping my own holes. I know this would definitely benefit the mount and prevent any stripping. What specific tools would i need to do it?

[Finnster]

Originally Posted by Jahay

I was considering doing that finnster with the braces but it if i can find another way of mounting it i would be happier.

I know this is a silly question, but i have never tried tapping my own holes. I know this would definitely benefit the mount and prevent any stripping. What specific tools would i need to do it?

All you need is a properly sized drill bit and a hand tap (and the tap wrench to hold it.) You first drill out the hole to the approx size, then run a hand tap down the hole which cuts the threads. Basically looks like a threaded drill bit.

You can get taps all over the place, but small metrics are not so common. I get mine from McMaster Carr, but I'm sure Harbor Freight or any other decent hardware dealer has them. M4x0.7mm and M3x.5mm are the most common sizes in RCs. Invaluable tools to have IMO.

Interesting idea about mounting the CD sideways. I wonder if it would fit inside TVPs tho.. Only 74mm clearance. You would not want to tap the thru hole, just the mount the screws are going into.

[JERRY2KONE]

Here is a link to one of the cheapest sets I have seen. I have one of these plus a few others. 3mm and smaller taps are easy to break, so I have spare taps just in case. You can find larger and better tap sets, but this is a good starter set.


http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXE224

All you have to do is drill the hole with the matching drill bit according to the size of tap, then tap the hole out with a threading tool. Use a piece of scrap to practice on and make sure you can do it farely well before trying it on your exspensive toy. It's really not difficult at all once you know what you are doing. Keep the drill straight and level to make a good hole to work with. When you use the tap the standard method is to move forward 1 turn and back off 1/2 turn repeating this all the way through until you reach the desired deapth. This will help to keep the hole clean and keep the tap from gauling and getting jammed in the hole, or even breaking off in the hole.