can you drill and tap the rivit hole of a stock swing weight

[Rambunctious]

can you drill and tap the rivit hole of a stock swing weight

I need to add some tip weight, I am at the heaviest (4.5 gram) rivit now.

can I drill and tap or is the weight hardened.
and if so, what bolt size/tap size is used

Ramb

 

[pro116]

Not shure it pretty hard material. but hauck powersports sells 5.0,5.5,and 6 gram boldts with nut for the stock clutch weight.

 

[Rambunctious]

thanks pro

your advice on the hauck bolts made me think about this option of "rambunctious" bolts ground to the right weights
something I could do today at work in the machine shop

but duuuuuhhhh. who needs threads when you can just add a nut to the otherside.

don't tell anyone I'm actually an engineer

Ramb

 

[Rambunctious]

so I will prolly order the bolts from Hauck like you originally suggested.

Ramb

 

[Rambunctious]

will tip weight fix toop half high rpm issue

if bottom half of cluching is good, but top half is 400 rpm high
is adding tip weight the right (best) thing to do?



currently running
51/43
stock gearing
red at 60
www
4.5 gram each rivit

8400 out the hole
8900-9000 top half

if so. will 5 gram do it? or big changes are needed 6 gram, 7?

Ramb

 

[Madmatt]

Yes, you can tap it

You can do it with a 1/4 inch tap. Just be careful, the weight is extremely hard. Do it in baby steps and use good cutting oil.

Madmatt

 

[n2oiroc]

if bottom half of cluching is good, but top half is 400 rpm high
is adding tip weight the right (best) thing to do?



currently running
51/43
stock gearing
red at 60
www
4.5 gram each rivit

8400 out the hole
8900-9000 top half

if so. will 5 gram do it? or big changes are needed 6 gram, 7?

Ramb

what sled? if its a viper i prefer it to gain rpm on the top end of a long run. more rpm's=higher top speed. usually 1 gram=100rpm. you can also add a washer to the rivet for more weight, but it cant stick out past the profile of the weight. and you want the weight in the tip. i think the heavy hauck rivets would do it.

 

[modsrx]

just put a spring with less total force

 

[nodoo_s]

just curiouse but wouldnt less total force mean more rpms or is is the other way

 

[modsrx]

less total force mean lower rpm more total force more rpm

 

[Rambunctious]

modsrx means less total springforce ( lower spring rat on primary spring) will result in lower rpm.


SRX is my sled

the combo I have is suppose to be the good setup, so i don't want to deviate too much or I might as well start over
so I am hoping fine tuning the rivit weigth will be it


so if 1 gram = 100, do you mean 1 gram per swingweight (ie. 3 total grams) = 100rpm

or .3 gram per swing weight (x3) = 1 gram Total = 100rpm?



IE. to drop 100 rpm, my rivit/bolt should go from 4.5g to ? ( 4.833.. or 5.5)

thanks

Ramb

 

[modsrx]

add a 1 gramm in the total of the 3 weight ....

 

[modsrx]

but i'm sure you dont have 4.5 in both hole if you have a w-w-w

 

[pro116]

add some tip weight

 

[98srx6]

modsrx means less total springforce ( lower spring rat on primary spring) will result in lower rpm.


SRX is my sled

the combo I have is suppose to be the good setup, so i don't want to deviate too much or I might as well start over
so I am hoping fine tuning the rivit weigth will be it


so if 1 gram = 100, do you mean 1 gram per swingweight (ie. 3 total grams) = 100rpm

or .3 gram per swing weight (x3) = 1 gram Total = 100rpm?



IE. to drop 100 rpm, my rivit/bolt should go from 4.5g to ? ( 4.833.. or 5.5)

thanks

Ramb

Add one gram to each weight to start out. Make adjustments from there.