65 tooth vs 70 tooth

[Coolbreezin]

How much of a difference will 5 more teeth on the back make in regards to rpm at 60mph? My rear pulley came apart and shredded my my belt. Im having a hard time finding a 65 tooth that I like. Also, how many teeth will I need on the belt if I go to a 70 tooth?
I remember in the sportbike world it was 1 down in the front equals 3 up in the back. Not sure if that applies to our application.

 

[FrankBDPS]

What pulley did you have on you're bike? Did you try Bigdogpartsking

 

[bdm7250]

How much of a difference will 5 more teeth on the back make in regards to rpm at 60mph? My rear pulley came apart and shredded my my belt. Im having a hard time finding a 65 tooth that I like. Also, how many teeth will I need on the belt if I go to a 70 tooth?
I remember in the sportbike world it was 1 down in the front equals 3 up in the back. Not sure if that applies to our application.

What pulley did you have on you're bike? Did you try Bigdogpartsking

Try here.
http://www.ebay.com/sch/i.html?_odk...+tooth.TRS2&_nkw=big+dog+65+tooth&_sacat=6000

 

[Coolbreezin]

What pulley did you have on you're bike? Did you try Bigdogpartsking

Ive been rolling for the past 2 years on a DNA Demon pulley. Ive contacted Outlaw Cycles twice with no reply.

 

[Coolbreezin]

Ive contacted Shovelhead kicker about a replacement. But Id rather not use a BDM OEM pulley.

 

[bdm7250]

Ive been rolling for the past 2 years on a DNA Demon pulley. Ive contacted Outlaw Cycles twice with no reply.View attachment 39904

Your pulley only lasted 2 years?

 

[bigkelk9]

They sell em on their site and the new ones are supposed to improved and way better.. someone here just recently got one.. can't remember who.. but someone might chime in

 

[Coolbreezin]

Yes, 3 arms.
Yes, 25 months.

 

[bdm7250]

Very similar to what you had, looks a lot beefier and teflon coated.
http://www.ebay.com/itm/11-BIG-DOG-...ash=item5694489e1c:g:bYoAAOSwEeFU6iMB&vxp=mtr

 

[Coolbreezin]

Very similar to what you had, looks a lot beefier and teflon coated.
http://www.ebay.com/itm/11-BIG-DOG-...ash=item5694489e1c:g:bYoAAOSwEeFU6iMB&vxp=mtr

Already contacted Shovelheadkicker about this unit. Thank you for the link.

 

[Coolbreezin]

My first tow home with the new headlight. lol

Kind of hard to see but the inside wall of the pulley separated from the center part. Thats what shredded my belt.

 

[bdm7250]

Already contacted Shovelheadkicker about this unit. Thank you for the link.

 

[FrankBDPS]

Was the belt running off to that side? There sure wasn't much material holding that side plate on.

 

[bdm7250]

Was the belt running off to that side? There sure wasn't much material holding that side plate on.

Ya get what ya pay for..

 

[Srodden]

Looks like there was some pressure in the wrong place. Side pressure, mis alignment, belt too tight there shouldn't have been any reason for the pulley to do that if the belt was running neutral in the middle.
Just curious was pully billet or chromed ?

 

[Mr. Wright]

 

[blacktopper]

View attachment 39911
My first tow home with the new headlight. lol
View attachment 39912
Kind of hard to see but the inside wall of the pulley separated from the center part. Thats what shredded my belt.
View attachment 39913

Did the screws come loose that hold the inside plate to the body?

 

[Coolbreezin]

1 Sides are welded on.
2 Belt was true for the past 10,000 or so miles. I fail to see how it suddenly shifted. The inside of the wall would shine like a mirror from all the rubbing.
3 True, you do get what you pay for. I spoke to DNA and they told me that that the Demon pulley wholesales for more than I bought it for, so we think it was a leftover that the seller wanted to get rid of.

 

[Srodden]

One more thing I see those rims those were on a recall. Are they original to the bike ?

 

[1mndg]

A 70 tooth pulley compared to a 65 will change all gearing by 3.25%. Lower.