6th Gear in Tranny? - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 16 (permalink) Old 11-07-2010, 02:31 AM Thread Starter
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6th Gear in Tranny?

Hey guys!

Was wondering if anyone has or can you add a 6th gear to the 750 tranny?

The only thing I never liked about the 750 was that it SCREAMED for a 6th gear on the highway! If you wanted to cruise over 65 or 70 the RPM's would get up there and a 6th gear would have helped a lot!

Can it be done?

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post #2 of 16 (permalink) Old 11-07-2010, 06:51 AM
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you would have to engineer a new shift drum, counter shafts main shafts new more narrow gears and shift forks. The engineering work would cost you more than a new ducatti. The was a member that had plans to have machined a new final gear drive but it probally came out to be to expensive. I will try to find the cad drawings for you.

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post #3 of 16 (permalink) Old 11-07-2010, 07:10 AM
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here is the cad diagram i was talking about.
https://www.vn750.com/photopost/showp...to=431&cat=501

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post #4 of 16 (permalink) Old 11-07-2010, 11:47 AM
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Yes, the Vulcan 750's RPM's screem at highway speeds, and a sixth gear seems like it would be great, but the V-twin 750 engine is made for high revs.

Don't know how many times I've (as well as probably every Vulcan 750 rider) have tried to bump it to sixth gear.... but just get used to it.
I don't see a sixth gear even if, by some miracle, Ma Kaw would bring the beloved 750 Vulcan back into production.


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post #5 of 16 (permalink) Old 11-07-2010, 03:52 PM Thread Starter
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Quote:
Originally Posted by hyperbuzzin View Post
Yes, the Vulcan 750's RPM's screem at highway speeds, and a sixth gear seems like it would be great, but the V-twin 750 engine is made for high revs.
Is it?? Didn't realize that.
Well, that's good cuz if you want to go more than say 65 the RPM's climb fast!

Current Ride...2008 Yamaha FJR1300

Past Pleasures...
2007 Suzuki Bandit1250
2006 Triumph Sprint
2004 Kawasaki ZRX1200
2002 Kawasaki ZRX1200
1996 Kawasaki Vulcan 750
1984 Honda V65 Sabre 1100
1986 Kawasaki Vulcan 750
1982 Suzuki GS750EZ
1974 Suzuki GT380
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post #6 of 16 (permalink) Old 11-07-2010, 04:12 PM
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Quote:
Originally Posted by hyperbuzzin View Post
Yes, the Vulcan 750's RPM's screem at highway speeds, and a sixth gear seems like it would be great, but the V-twin 750 engine is made for high revs.

Don't know how many times I've (as well as probably every Vulcan 750 rider) have tried to bump it to sixth gear.... but just get used to it.
I don't see a sixth gear even if, by some miracle, Ma Kaw would bring the beloved 750 Vulcan back into production.
I do this a lot

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post #7 of 16 (permalink) Old 11-07-2010, 04:15 PM
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Originally Posted by SoCalVulcan View Post
Is it?? Didn't realize that.
Well, that's good cuz if you want to go more than say 65 the RPM's climb fast!
i think mine is spinning 5000ish rpms at 70ish( maybe a lil more ) mph , never really payed attention to the tac while cruiseing down the e ways. im always on the look out for the terd in the big truck yacking on the phone slowly comeing over to my lane

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1987 kawasaki vulcan 750 SOLD

1985 kawasaki vulcan 700 parts bike maybe
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3 cagers doors kicked in
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post #8 of 16 (permalink) Old 11-07-2010, 04:26 PM Thread Starter
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Quote:
Originally Posted by centurynick View Post
i think mine is spinning 5000ish rpms at 70ish( maybe a lil more ) mph , never really payed attention to the tac while cruiseing down the e ways. im always on the look out for the terd in the big truck yacking on the phone slowly comeing over to my lane
The problem I used to run into here in So Cal was that on many So Cal freeways the "average" speed of traffic is 70-80mph!!!
When I ride I ALWAYS try to keep up with the flow or go slightly faster to avoid being hit from behind!
So cruising at 75 or so was making the engine work pretty hard.
I think this bike was designed as more of a city cruiser than a highway one.

Current Ride...2008 Yamaha FJR1300

Past Pleasures...
2007 Suzuki Bandit1250
2006 Triumph Sprint
2004 Kawasaki ZRX1200
2002 Kawasaki ZRX1200
1996 Kawasaki Vulcan 750
1984 Honda V65 Sabre 1100
1986 Kawasaki Vulcan 750
1982 Suzuki GS750EZ
1974 Suzuki GT380
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post #9 of 16 (permalink) Old 11-07-2010, 04:35 PM
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hmmmm maybe shove a bigger tire on the back to drop the rpms a tad

2010' voyager

2005 1600 nomad sold

1987 kawasaki vulcan 750 SOLD

1985 kawasaki vulcan 700 parts bike maybe
lots of hand guns
3 cagers doors kicked in
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post #10 of 16 (permalink) Old 11-07-2010, 06:01 PM
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Ive done 75-80 mph for up to 500 miles a day. The bike never complained. Remember, these bikes don't redline until 8,500 rpm. So 5,000 rpm is less than 60% of the maximum rpm.

I'm keepin' all the left over parts. I'm gonna use 'em to build another bike!
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