Triple tree geometry

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rsuarez
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Location: Dallas, TX

Triple tree geometry

Post by rsuarez »

Hi, I ve been searching for the triple tree geometry measurements for a 79. Does any one knows offset, rake and fork span?

Thanks.

Ramon
Rsuarez
1971 Triumph Daytona, 1979 Honda CBX, 1979 Ducati 900GTS, 1984 Honda 200XR, 1992 Gilera CX, 2009 KTM 990 Adventure, 2016 KTM 250 2t Six Days, 2018 BMW K1600B

EMS
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Re: Triple tree geometry

Post by EMS »

The triple tree itself has no rake. The rake is in the frame. It is 27.5°.
The fork span is 195mm and the offset is 60mm. These are not official Honda numbers but dimensions taken from a part to be used in my front end geometry calculator. They worked fine.

rsuarez
ICOA Member
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Posts: 56
Joined: Thu Dec 25, 2014 10:06 am
Location: Dallas, TX
Location: Dallas, TX

Re: Triple tree geometry

Post by rsuarez »

Hi EMS, thanks for the answer.

Yesterday I did a very quick measurement, nothing precise, and it seem the offset is 40 mm instead of 60 mm. I measured from the center of the stem to the imaginary centerline of the forks. Is this right?

Best.

Ramon
Rsuarez
1971 Triumph Daytona, 1979 Honda CBX, 1979 Ducati 900GTS, 1984 Honda 200XR, 1992 Gilera CX, 2009 KTM 990 Adventure, 2016 KTM 250 2t Six Days, 2018 BMW K1600B

EMS
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Re: Triple tree geometry

Post by EMS »

Yes, Ramon, that was a typo. It is 40mm. Sorry.

rsuarez
ICOA Member
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Posts: 56
Joined: Thu Dec 25, 2014 10:06 am
Location: Dallas, TX
Location: Dallas, TX

Re: Triple tree geometry

Post by rsuarez »

Thanks.
Rsuarez
1971 Triumph Daytona, 1979 Honda CBX, 1979 Ducati 900GTS, 1984 Honda 200XR, 1992 Gilera CX, 2009 KTM 990 Adventure, 2016 KTM 250 2t Six Days, 2018 BMW K1600B

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