HPN gears for airhead?

Cpt. Ron · 02-06-2007, 04:09 PM

Where do I get the 1st and 5th gears made by HPN? My tranny is getting torn down, and I'm thinking of doing some changes, "while I'm in there", if you know what I mean.

SOLO LOBO · 02-06-2007, 04:25 PM

Quote:

Originally Posted by Cpt. Ron

Where do I get the 1st and 5th gears made by HPN? My tranny is getting torn down, and I'm thinking of doing some changes, "while I'm in there", if you know what I mean.

R-dubb posted something about the HPN gears, I think he said the taller 5th is good but the lower first is on 5% lower or something...always

Bigger Al · 02-06-2007, 04:54 PM

Google "Siebenrock." I think they have what you're looking for.

Rubber Cow · 02-06-2007, 04:54 PM

I got mine form Wudo in Germany.
Forget the 1st....it's too low and more of a bitch to instal. The 5th is sweet. Try CAL BMW....see if Paul Weiss can order it for you...but don't tell him I sent you!

Cheers,
Jorge

R-dubb · 02-06-2007, 05:32 PM

Quote:

Originally Posted by SOLO LOBO

R-dubb posted something about the HPN gears, I think he said the taller 5th is good but the lower first is on 5% lower or something...always

Yup, 1st is big waste of time and money, IMHO. Not really too low, but 5% on the low end doesn't do shit. Picture it this way. Instead of creeping at 10mph you can do it at 9.5. Get my drift. Besides, I'm concerned that the amount of force required to press that baby off the intermediate shaft is potentially destructive. Getting the new one on ain't no picnic. If you fuck up the shaft, you're looking at over $500 for a new one.

The taller 5th is magic. Easy to install. Meshes perfectly with a 6 or 7k shift out of 4th. If the bike is tuned for power you can still take 5th all the way to red-line at about 115mph. That's fast enough for me....

The service at Siebenrock ROCKS. Door to door in less than two weeks. That's where I'd go. I found mine stateside, but they are no longer available.

cheers to you my friend!

Renegade6 · 02-06-2007, 05:57 PM

I got mine from Boxerworks both lower 1st and higher 5th. Boxerworks is also a dealer for HPN in the US.

ADVnut · 02-06-2007, 06:44 PM

I went ahead and did the 1st and the 5th along with the circlip. It figured it was going to be open anyways.

My very rough, non-scientific calculations figure about 500RPM lower at highway cruising speeds of about 75-80 with the 5th gear. What are you other guys experiencing?

I have gotten a few sets from HPN direct, even with the exchange and shipping they are a little cheaper.

I know that Nathan at boxerworks STILL has some on the shelf.

Another thread on where to get the gears here.

ADVnut

Pezz_gs · 02-06-2007, 06:56 PM

Ron

I bought mine form

http://www.siebenrock.com/index1.php?sprache=en

Brilliant to deal with

Pezz :)

Rubber Cow · 02-06-2007, 07:07 PM

Quote:

Originally Posted by ADVnut

My very rough, non-scientific calculations figure about 500RPM lower at highway cruising speeds of about 75-80 with the 5th gear. What are you other guys experiencing?
ADVnut

Yep that's what I'm seeing with the 5th as well...500 RPM lower at Hwy cruising speed. The motor is just "happier".
Cheers,
Jorge

02-06-2007, 04:09 PM	#1
Cpt. Ron ^OP aka Birdkilla Joined: Jul 2001 Location: Sacramento, CA Oddometer: 2,351	HPN gears for airhead? Where do I get the 1st and 5th gears made by HPN? My tranny is getting torn down, and I'm thinking of doing some changes, "while I'm in there", if you know what I mean. __________________ Cpt. Ron Sack-O-Tomato, CA '05.5 950 Adventure S "Bad Mutha F@&ker" '04 R1150RTP "cop motor, cop suspension.." '00 XR650R Dual Sport "Lil' Mule" '75 RL250 '01 TTR90 '01 PW50 Conti TKC80 tire swing "I don't know what you do, but I know what I do, and I don't do that." --Uncle Doug, R.I.P. "Without the possibility of death, adventure is not possible"--Reinhold Messner

02-06-2007, 04:54 PM	#3
Bigger Al Still a stupid tire guy Joined: Oct 2004 Location: Auburn, CA Oddometer: 7,270	Google "Siebenrock." I think they have what you're looking for. __________________ "Nearly all men can stand adversity, but if you want to test a man's character, give him power." - Abraham Lincoln

02-06-2007, 04:54 PM	#4
Rubber Cow GS Dork Joined: Jul 2001 Location: Aloha... yes, Aloha, Oregon Oddometer: 5,299	I got mine form Wudo in Germany. Forget the 1st....it's too low and more of a bitch to instal. The 5th is sweet. Try CAL BMW....see if Paul Weiss can order it for you...but don't tell him I sent you! Cheers, Jorge __________________ "He had that rare weird electricity about him--that extremely wild and heavy presence that you only see in a person who has abandoned all hope of ever behaving"normally"." HST-RIP "Woof, woof woof woof ...woof woof!!!!!!!!!" Cricket the Dog-RIP

02-06-2007, 05:57 PM	#6
Renegade6 Studly Adventurer Joined: Feb 2004 Location: Ft. Riley, KS Oddometer: 820	I got mine from Boxerworks both lower 1st and higher 5th. Boxerworks is also a dealer for HPN in the US. __________________ Brandon 1993 BMW R100GS

02-06-2007, 06:44 PM	#7
ADVnut Still Looking Joined: Apr 2003 Location: Atlanta, GA USA Oddometer: 177	Hpn I went ahead and did the 1st and the 5th along with the circlip. It figured it was going to be open anyways. My very rough, non-scientific calculations figure about 500RPM lower at highway cruising speeds of about 75-80 with the 5th gear. What are you other guys experiencing? I have gotten a few sets from HPN direct, even with the exchange and shipping they are a little cheaper. I know that Nathan at boxerworks STILL has some on the shelf. Another thread on where to get the gears here. ADVnut

02-06-2007, 06:56 PM	#8
Pezz_gs Cant ride for crap Joined: Nov 2004 Location: Sydney Skunkworks Oddometer: 3,382	Ron I bought mine form http://www.siebenrock.com/index1.php?sprache=en Brilliant to deal with Pezz :) __________________ Pezz :) Scrapheap Adventure Ride 2013 - Back 'O Bourke www.scrapheapadventureride.com.au I'm not a complete idiot -- Some parts are missing

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