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PostPosted: Sat Oct 01, 2016 11:10 pm 
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Joined: Thu Sep 29, 2016 4:32 am
Posts: 615
Location: Indianapolis, IN
Wondering what way to go for small rake (castor angle) and trail improvements on my H2B. On my XV750 to go from cruiser with too much rake to cafe that handled MUCH better, I lowered the front and raised the rear, steepening the fork angle. Somehow think the H2 has too much rake now, but it does have steering dampers that seem to indicate it has problems with too little rake. Thoughts?

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1974 Kawasaki H2B 750, 1981 Yamaha XV750 Cafe, 1986 Kawasaki KDX200, 2003 Honda XR100, 2004 SDG140. 2006 Ninja 500R Turbo intercooled fuel injected.


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PostPosted: Sat Oct 01, 2016 11:20 pm 
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Joined: Thu Jun 09, 2011 7:03 am
Posts: 4604
Location: Milang, South Australia
Longer rear shocks, raise the fork tubes slightly in the triple clamps, and I don't know if an early (shorter) H2 swing-arm will work in a H2-B, some guys have done the reverse, though I am not sure why! A lot of people use an 18" rim on the front too, with good results. Careful set up is the key to good H2 handling. (standard rake is something like 27.5 degrees, you can afford to bring it in a little....)

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PostPosted: Sun Oct 02, 2016 1:38 am 
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Joined: Tue Jun 07, 2011 6:37 am
Posts: 10460
Location: Rio Rancho, New Mexico
There is a cool rake trail calculator on Dale resource site listed at the top of the board. Rod is correct A 18" front makes a difference and longer shocks. Check what your actual rakes is and use the calculator to get 100 mm of trail, that works really well on the H models. :thumbup:

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PostPosted: Sun Oct 02, 2016 1:47 am 

Joined: Wed Jun 22, 2011 7:46 pm
Posts: 1334
Location: Kingston, N.Y.
I'm doing the 18" front wheel on my H1, have read nothing but good on that mod :thumbup:

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PostPosted: Sun Oct 02, 2016 9:21 am 
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Joined: Tue Jun 07, 2011 6:37 am
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Location: Rio Rancho, New Mexico
Plus it increases the disc advantage....... :thumbup:

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Twist the throttle, tilt the horizon, and have a great time. What triples are all about...........


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PostPosted: Sun Oct 02, 2016 8:59 pm 
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Joined: Thu Sep 29, 2016 4:32 am
Posts: 615
Location: Indianapolis, IN
What is the suggested 18" front rim to use, to lace up to the stock hub?

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1974 Kawasaki H2B 750, 1981 Yamaha XV750 Cafe, 1986 Kawasaki KDX200, 2003 Honda XR100, 2004 SDG140. 2006 Ninja 500R Turbo intercooled fuel injected.


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PostPosted: Sun Oct 02, 2016 9:44 pm 
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Joined: Wed Jun 08, 2011 11:34 pm
Posts: 9826
Location: North Central NC
If you're asking what's the best one, I'd say get an Excel. I built a wheel with one and it almost trued itself. Check the recommended width for the tire you want to use. 100/90 is a decent choice.

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PostPosted: Sun Oct 02, 2016 9:46 pm 

Joined: Wed Jun 22, 2011 7:46 pm
Posts: 1334
Location: Kingston, N.Y.
Ja-Moo wrote:
Plus it increases the disc advantage....... :thumbup:


Rake or 18 inch wheel :think:

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1975 S3 project bike
1974 H1 project bike
1972 Yamaha R5
1974 Yamaha RD350


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PostPosted: Sun Oct 02, 2016 10:34 pm 
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Joined: Tue Jun 07, 2011 6:37 am
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Location: Rio Rancho, New Mexico
Disc, the ratios of diameters are closer. I also use a 100 front with a 2.15 rim width.

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Twist the throttle, tilt the horizon, and have a great time. What triples are all about...........


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PostPosted: Mon Oct 03, 2016 6:58 am 

Joined: Wed Jun 22, 2011 7:46 pm
Posts: 1334
Location: Kingston, N.Y.
The wheel being an 18 inch gives the caliper a little more stopping power over the same setup on a 19 inch wheel :?:

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1974 H1 project bike
1972 Yamaha R5
1974 Yamaha RD350


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