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General Category => General Discussion => Topic started by: bmc5733946 on March 23, 2022, 01:41:14 PM

Title: 35mm Fork oil
Post by: bmc5733946 on March 23, 2022, 01:41:14 PM
I am aware that there were some minor differences in the 35mm forks used on Tonti framed big blocks. Is it really necessary to have at least 4 different amounts of fork oil in the respective manuals and even conflicting amounts in a single manual. Amounts from 50 ccs to 80 ccs are listed in the various manuals. I have a 1989 Mille GT, there is no specific manual for a Mille so I was trying to extrapolate the information from the various manuals. I have reached information overload and have decided to take the middle road at 60 ccs unless someone wiser has different wisdom and would like to share.

Brian
Title: Re: 35mm Fork oil
Post by: mtiberio on March 23, 2022, 01:59:43 PM
Literally anything non zero is correct
Title: Re: 35mm Fork oil
Post by: Sye on March 23, 2022, 02:22:22 PM
I don't know the answer to your question but 50 or 80cc doesn't seem right to me. I would have expected it to be something over 200cc per leg.

50cc is the same volume as 50ml which is just over 3 tablespoons?
Title: Re: 35mm Fork oil
Post by: bmc5733946 on March 23, 2022, 02:26:00 PM
That got me chucklin Mike! That is as I suspected, with amounts all over the place I kinda figured that 50 ccs is the minimum and 80 ccs the maximum and will assume so from now on. I know it is only for lube but just thought I'd check the brain trust..

Thanks Mike!

Brian
Title: Re: 35mm Fork oil
Post by: Stevex on March 23, 2022, 03:15:57 PM
Quote from: Sye on March 23, 2022, 02:22:22 PM
I don't know the answer to your question but 50 or 80cc doesn't seem right to me. I would have expected it to be something over 200cc per leg.

50cc is the same volume as 50ml which is just over 3 tablespoons?

Its only for lubrication, all the damping is done by the sealed 'dampers'.
Title: Re: 35mm Fork oil
Post by: Sye on March 23, 2022, 03:22:59 PM
Quote from: Stevex on March 23, 2022, 03:15:57 PM
Its only for lubrication, all the damping is done by the sealed 'dampers'.

That explains it, I didn't know that and feel silly now. 😋
Title: Re: 35mm Fork oil
Post by: Antietam Classic Cycle on March 23, 2022, 04:28:42 PM
Quote from: bmc5733946 on March 23, 2022, 01:41:14 PM
I am aware that there were some minor differences in the 35mm forks used on Tonti framed big blocks. Is it really necessary to have at least 4 different amounts of fork oil in the respective manuals and even conflicting amounts in a single manual. Amounts from 50 ccs to 80 ccs are listed in the various manuals. I have a 1989 Mille GT, there is no specific manual for a Mille so I was trying to extrapolate the information from the various manuals. I have reached information overload and have decided to take the middle road at 60 ccs unless someone wiser has different wisdom and would like to share.

Brian

Do you have Guzziology? That info. is in it. I can look latter if you'd like. Edit: Guzziology lists 60 cc per leg.
Title: Re: 35mm Fork oil
Post by: bmc5733946 on March 23, 2022, 06:41:24 PM
Charlie I looked and missed it. It's listed in the section "Larger forks for the late Mille", that was not what I was looking for so didn't read it. Brings to mind a final exam I had in the 80s. Top of the page said "read everything before doing anything". Those who didn't read everything were yelling their names out loud on question 3. The last line was "don't do anything except put your name in the top right corner". Yes I passed but stopped myself and went back and reread the instructions at question 3. So I didn't 4 point the exam.

Thanks for the confirmation Charlie!

Brian