Mousetrap

Mousetrap with eliminator clutch hub springs

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Scrap
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Mousetrap

#1

Post by Scrap »

Installed a mousetrap eliminator with the later model softer clutch hub springs on my 57 FL back in the 70's.
I plan on putting the mousetrap back on just cause I want to. A recent post by RooDog said not to use a mousetrap with the softer springs.
What is the problem with this? Is it not possible to dial in the mousetrap when doing this? Is there not enough force from the clutch to retract the mousetrap?
Thanks,
Sam



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Re: Mousetrap

#2

Post by Buddhahoodvatoloco »

What is the problem with this? Is it not possible to dial in the mousetrap when doing this? Is there not enough force from the clutch to retract the mousetrap? Vice versa.

Scrap
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Re: Mousetrap

#3

Post by Scrap »

Vice Versa? The mousetrap is too strong for the springs?

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Re: Mousetrap

#4

Post by RooDog »

Sam....
I think what I said, or at least what i meant, was to not use the softer springs with a mouse trap, rather than, don't use a MT with the soft springs. In any case the soft springs are counterproductive to good clutch lock up. So if you are gonna use a MT, upgrade to the original, companion, foot clutch springs. I have always liked and used a mousetrap when ever I could.....
9-16-17.03.jpg
9-16-17.03.jpg (164.09 KiB) Viewed 774 times
Derby cover is off because I was still dialing in the clutch with the SuperMax belt drive and 52 rollers....
....RooDog....

Scrap
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Re: Mousetrap

#5

Post by Scrap »

RooDog wrote:
Thu Jan 16, 2020 1:51 am
Sam....
I think what I said, or at least what i meant, was to not use the softer springs with a mouse trap, rather than, don't use a MT with the soft springs. In any case the soft springs are counterproductive to good clutch lock up. So if you are gonna use a MT, upgrade to the original, companion, foot clutch springs. I have always liked and used a mousetrap when ever I could.....
9-16-17.03.jpg
Derby cover is off because I was still dialing in the clutch with the SuperMax belt drive and 52 rollers....
....RooDog....

RooDog, that makes sense. Thanks, I'll take your advice.
Sam

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Re: Mousetrap

#6

Post by CC Rider »

RooDog wrote:
Thu Jan 16, 2020 1:51 am
Sam....
I think what I said, or at least what i meant, was to not use the softer springs with a mouse trap, rather than, don't use a MT with the soft springs. In any case the soft springs are counterproductive to good clutch lock up. So if you are gonna use a MT, upgrade to the original, companion, foot clutch springs. I have always liked and used a mousetrap when ever I could.....
9-16-17.03.jpg
Derby cover is off because I was still dialing in the clutch with the SuperMax belt drive and 52 rollers....
....RooDog....
Roo, My 65' has a mousetrap and hand clutch. So are you saying I should use or get the foot clutch springs for my set-up? BTW, I'm still trying to dial in the clutch/mousetrap adjustment on my bike.
Craig

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Re: Mousetrap

#7

Post by RooDog »

Roo, My 65' has a mousetrap and hand clutch. So are you saying I should use or get the foot clutch springs for my set-up? BTW, I'm still trying to dial in the clutch/mousetrap adjustment on my bike.
Craig
All the Big Twins from 1941 to 1967 used the same 10 springs, PN 38077-41, for both foot clutch and with the mouse trap hand clutch OK? The cable operated "eliminator" style clutch came from the factory in 1968 with softer springs, and an extra pair of plates, and no buffer, 1/2 disc, either. so that the balance of power between the mousetrap booster spring and the 10 springs was not the same as with the heavier, correct, foot clutch springs.
BTW: It is important to have the mouse trap mounted low enough that the pull rod, back to the clutch arm, is pulling straight and level. The MoCo should have used some sort of swivel link at the arm, but they didn't, so we have to make do as the two ends of that rod move in different arc planes.....
....RooDog....

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Re: Mousetrap

#8

Post by RooDog »

Scrap wrote:
Wed Jan 15, 2020 10:15 pm
Installed a mousetrap eliminator with the later model softer clutch hub springs on my 57 FL back in the 70's.
I plan on putting the mousetrap back on just cause I want to. A recent post by RooDog said not to use a mousetrap with the softer springs.
What is the problem with this? Is it not possible to dial in the mousetrap when doing this? Is there not enough force from the clutch to retract the mousetrap?
Thanks,
Sam
Sam....
I can not answer this as I have never run a mouse trap with the softer springs. It's tricky enough dialing in a clutch with the correct springs. I have, however, successfully run with extra plates, and I do like the Barnett Kevlars, I just grind the lining off of one side of the last disc to achieve that 1/2 plate only to lessen the stack height.
Mouse Traps Forever, Forever Mouse Traps...

But, Sam, try it with the soft springs, if it don't balance out, then go with the heavier springs.
I personally do not like too soft a feel at the hand lever, a little resistance makes me feel like I'm in control of at least something in my life....
....RooDog....

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Re: Mousetrap

#9

Post by CC Rider »

RooDog wrote:
Thu Jan 16, 2020 1:35 pm
Roo, My 65' has a mousetrap and hand clutch. So are you saying I should use or get the foot clutch springs for my set-up? BTW, I'm still trying to dial in the clutch/mousetrap adjustment on my bike.
Craig
All the Big Twins from 1941 to 1967 used the same 10 springs, PN 38077-41, for both foot clutch and with the mouse trap hand clutch OK? The cable operated "eliminator" style clutch came from the factory in 1968 with softer springs, and an extra pair of plates, and no buffer, 1/2 disc, either. so that the balance of power between the mousetrap booster spring and the 10 springs was not the same as with the heavier, correct, foot clutch springs.
BTW: It is important to have the mouse trap mounted low enough that the pull rod, back to the clutch arm, is pulling straight and level. The MoCo should have used some sort of swivel link at the arm, but they didn't, so we have to make do as the two ends of that rod move in different arc planes.....
....RooDog....
Thanks Roo! Since I don't know what springs are in my clutch, maybe I should start with installing new springs (PN 38077-41) and go from there.

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Re: Mousetrap

#10

Post by RooDog »

V-Twin # 13-0139... For the Early, heavy, springs. Beware: Some folks have even used early Sportster springs....
....RooDog....

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Re: Mousetrap

#11

Post by Andygears »

It would seem that as you’re balancing two springs and at least four levers against one another, and most have adjustments, that starting with the correct spring rates would be elementary.

Andygears

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Re: Mousetrap

#12

Post by RooDog »

What is elementary is not always obvious, my dear Watson....

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