Is it me or the equipment????

crs1945 Sun Oct 18, 2015 2:31 pm

Well I got my .049 Black Widow engine with a snap starter.The problem ( if there is one ) is that the small loop of the spring faces to the left ( if you are looking from the front to the back of the engine) BUT the notch on the cam faces the same way therefore when you turn the prop to the right instead of engaging the small loop it rides over the top!! The picture that I have from the starting manual shows the spring loop facing to the right. Do I have the wrong cam or the wrong spring or am I just crazy. Help PLEASE!
Chuck:leaves:

Note- I just looked on cox engine parts site & they have a LEFT hand starter snap spring kit. Do I possibly have this and if so how does it work. Everything that I have watched shows the prop being turned to the right to engage the starter with the prop then spinning counterclockwise and starting.

NEW222 Sun Oct 18, 2015 4:04 pm

As I am sitting here without one handy, I am believing that you have the wrong cam. When looking at it from the front of the engine, The pick-up/loop of the front of the spring should be in the form of a backwards letter 'C'. That is the one for the standard direction. Could you post a pic for reference?

Oldenginerod Sun Oct 18, 2015 4:05 pm

It's very easy for descriptions to become confusing- right, left, clockwise, counterclockwise- but to me, if you're using a regular prop, it sounds like you need a right-hand cam to match your spring

*edit* I was writing this when New posted.

NEW222 Sun Oct 18, 2015 4:27 pm

Here are a couple of picture of my Black Widow with standard direction propeller.

Picture 1. The pick-up of my spring is at approximately the 5 o'clock position.

Is it me or the equipment???? Bwspri11

Picture 2. The cam that is on my Black Widow.

Is it me or the equipment???? Bwspri12

Picture 3. The cam is engaged to the spring, standard direction.

Is it me or the equipment???? Bwspri13

Hope this may help you.

crs1945 Mon Oct 19, 2015 6:45 am

Thanks guys. New222 the pics. were right on I have the wrong cam. My cam slots face the opposite way. Can these be bought separately form the spring? I Love This Forum!

What direction would it be called a R.H. or a L.H cam.

GallopingGhostler Mon Oct 19, 2015 1:12 pm

crs1945 wrote:Thanks guys. New222 the pics. were right on I have the wrong cam. My cam slots face the opposite way. Can these be bought separately form the spring? What direction would it be called a R.H. or a L.H cam.

If you're looking for the cam part only, E-mail Bernie at Cox International or the dude at EX-Engines. They might be able to sell you just that.

Standard rotation is "Right Hand". When viewed from the cockpit, the prop rotation comes from the left and over to the right. Most engines are set to run this way. "Left Hand" is just the opposite.

Unless you want LH for say a pusher engine to use standard RH props, you can get the standard one piece spring snap starter that snaps out of the way. (They come in both HL and RH BTW.) Then you don't have the drag of the cam starter caused by the spring rubbing, taking a few hundred RPM off the top end.

Don't get me wrong, the cam starter is effective and I used to fly several engines that used it, didn't notice the slight drop and these were in sport models, didn't bother to remove to fly and did just fine. Added advantage is prevents engine from running backwards. Given the choice I prefer the snap spring starters.

getback Mon Oct 19, 2015 9:12 pm

do you need a cam or starter spring ? If you are in the US I will send you either one you want / Eric Babe Bee .049

crs1945 Tue Oct 20, 2015 6:36 am

Thanks Eric. P.M. sent. Very Happy

getback Tue Oct 20, 2015 7:01 am

crs1945 do you have the hex drive plate behind that cam ? I will sent you what you need to get it going the RH way . Eric

crs1945 Tue Oct 20, 2015 7:24 am

I do have the hex drive plate. Sorry forgot to mention that.

getback Tue Oct 20, 2015 7:52 am

ok I 'll get the stuff in the mail today. Eric This Site Rocks!

crs1945 Tue Oct 20, 2015 8:46 am

This forum is the greatest! Thank you again Eric. This Site Rocks!

getback Tue Oct 20, 2015 9:02 am

crs1945 wrote:This forum is the greatest! Thank you again Eric.

You got it man Glad your here with us Sir.

crs1945 Fri Oct 23, 2015 9:22 am

Parts came yesterday. They fit perfectly and work in the correct direction. Now I am awaiting some mounting screws and a few other parts. Should be arriving today. Again Eric thanks for your help. I Love This Forum!

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