To Twist/Untwist?

MGH_PA · 05-29-2008, 04:58 PM

Ok, I'm now confusing myself. I'm setting the timing up on my 101st, and having a heck of a time doing so. My top cam is hitting the cables a bit before the bottom. So I untwisted the cables connecting to the top 5 turns. It almost seems to make it worse. I sat there looking at it, and I figuring untwisting would retard the cam more, thus causing it to hit the cable with the cable stops slower, but that doesn't seem to be the case. Do I have this backwards?

Roskoe · 05-29-2008, 05:04 PM

I always have trouble visualizing this too. Just grab the cable you are thinking about twisting and pull on it a little. You should be able to see one of the two cams rotate a little.

05-29-2008, 05:11 PM

Quote:

ORIGINAL: Roskoe

I always have trouble visualizing this too. Just grab the cable you are thinking about twisting and pull on it a little. You should be able to see one of the two cams rotate a little.

Yep, I also screw this up. Roskoe has it right. just pull it about 10" from the cam and see if the cam does what you want.

SwampCollie · 05-29-2008, 06:43 PM

I get it confused all the damn time and I do this for a living.

I will tell you that 5 turns is like a mile when you need to move a foot. If it was just a bit off.... a half a turn would have probably more than done it. Baby steps.

I'll probably say this backwards... but in order to make a cam roll over sooner... you need to lengthen the cable running to it... meaning the cable that is NOT hitting first... take twists OUT of that cable.... or add to the one hitting first.

Somebody check behind me.... I always end up confusing myself and having to redo what I just undid.

MGH_PA · 05-29-2008, 08:19 PM

Quote:

ORIGINAL: SwampCollie

I get it confused all the damn time and I do this for a living.

I will tell you that 5 turns is like a mile when you need to move a foot. If it was just a bit off.... a half a turn would have probably more than done it. Baby steps.

I'll probably say this backwards... but in order to make a cam roll over sooner... you need to lengthen the cable running to it... meaning the cable that is NOT hitting first... take twists OUT of that cable.... or add to the one hitting first.

Somebody check behind me.... I always end up confusing myself and having to redo what I just undid.

See I would have thought it would be the opposite. Pulling on the cables (simulating a shortening of the cable) makes the cam advance in position, and thus I would think it would get to the cable stop point quicker. Just the opposite would seem to be what you would do for making the cam hit later. Lenghtening the cable would retard the cam and make it hit later. Then again, I'm so thoroughly confused, it's not even funny right now[&:]

Where's all the Bowtechies?[8D]

Rick James · 05-29-2008, 08:38 PM

Heh.......Roskoe has great advice. It gets tough to describe when you have 2x cables attaching to each cam. [8D] I just tug on one and see what it does to the cam I want to clock.

BGfisher · 05-30-2008, 08:30 AM

Quote:

ORIGINAL: SwampCollie

I get it confused all the damn time and I do this for a living.

I will tell you that 5 turns is like a mile when you need to move a foot. If it was just a bit off.... a half a turn would have probably more than done it. Baby steps.

I'll probably say this backwards... but in order to make a cam roll over sooner... you need to lengthen the cable running to it... meaning the cable that is NOT hitting first... take twists OUT of that cable.... or add to the one hitting first.

Somebody check behind me.... I always end up confusing myself and having to redo what I just undid.

I'm pretty sure you got it right. Well, not 100%. I've only been doing this for 35+ years and still can't get it right all the time. Kinda like typing. Hunt and Peck.

Greg / MO · 05-30-2008, 10:35 AM

The cable that is effected by the stop in question (in your case, on the top cam -- I saw your other post but haven't responded to it yet) terminates on that same cam around a post; twist that cale to advance the cam and open the gap between the stop and the cable. Untwist it to retard the cam and close the gap.

Sorry for not responding sooner (per your question of where the BowTechies were...

); there were slab-sized bluegills calling my name and begging to have a fly rod attack them yesterday.

SwampCollie · 05-30-2008, 10:48 AM

Quote:

ORIGINAL: MGH_PA

Quote:

ORIGINAL: SwampCollie

I get it confused all the damn time and I do this for a living.

I will tell you that 5 turns is like a mile when you need to move a foot. If it was just a bit off.... a half a turn would have probably more than done it. Baby steps.

I'll probably say this backwards... but in order to make a cam roll over sooner... you need to lengthen the cable running to it... meaning the cable that is NOT hitting first... take twists OUT of that cable.... or add to the one hitting first.

Somebody check behind me.... I always end up confusing myself and having to redo what I just undid.

See I would have thought it would be the opposite. Pulling on the cables (simulating a shortening of the cable) makes the cam advance in position, and thus I would think it would get to the cable stop point quicker. Just the opposite would seem to be what you would do for making the cam hit later. Lenghtening the cable would retard the cam and make it hit later. Then again, I'm so thoroughly confused, it's not even funny right now[&:]

Where's all the Bowtechies?[8D]

I know EXACTLY what you mean. The way I remember it is whatever way it is rationale.... do the reverse. Honest to God thats how I think about it when it comes to timing cams and twisting/untwisting, because it makes no sense to me either.