How to service, modify & rebuild upside down forks (Triumph 675)

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How to guide on rebuilding upside down motorcycle cartridge forks
These were from a Triumph 675 Daytona but this style of fork are all very similar
A different weight oil used and a modified air gap to improve the ride
Who is Comrod Motorsport:
/ @comrodmsport
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0:00 Intro & tooling
04:25 Oil drain & fork separation
08:30 Cleaning & assessing chrome pitting
10:50 Seal removal
13:30 Spring compressing/removal/separation
17:30 Clean up
20:00 Copper ennealing
21:35 Seal fitment
26:40 Damper fitment
28:20 Fork oil & damper bleed
30:40 Fork oil height adjustment
34:00 Re assembly
38:00 Recap

Пікірлер: 11

@royevans4581 3 ай бұрын

That's a clever compressor tool for those that only have two arms. The web is such a great place to catch such useful videos! Doing my Hayabusa forks ready for it's MOT. )))

@shanemcredmond9751 4 ай бұрын

Thanks for this video. Very clear and concise instructions.

@johngriffin370 6 ай бұрын

very helpful video ,never done a full strip with any of my forks and always got Bob Grant to rebuild all my forks and rear shocks but after watching your video im for a bash at this myself .i build gearboxes thats my thing so im sure i`ll manage as your video is so clear and helpful . thank you for posting top man

@simon-jr7we 3 ай бұрын

Are the forks from a 675 or a 675 r? I've an r to do and wonder whether they're the same as these? Great video 👍

@ComrodMsport 3 ай бұрын

They are from a standard 675, the R’s have Ohlins fitted. I’ve not had a set of those apart, the internals I’m sure will have differences and certainly have a different fork cap, however all forks have the same components and operating principles

@steveneastland4128 5 ай бұрын

Surprised there isn’t an upper bush on these stantions, seems a bit odd to be honest Good quality video though, well explained, nicely shot and I like your compression tool

@ComrodMsport 5 ай бұрын

I can’t say I’ve ever seen another set of forks without upper bushes either 🤔 Thanks 👍

@stevenrapa4014 4 ай бұрын

Nice video fella! Only thing is you didnt set the rebound adjuster to ensure it has the correct range of adjustment. Depending on where the adjuster is set, it can change how far on the damping rod the cap will screw. This can also mean you effectively change the amount of preload. Same as if the cartridge doesnt locate properly in the recess at the bottom, will also change it. Still great video with great pacing.

@ComrodMsport 4 ай бұрын

Thanks for the positive feedback 👍 Yep, I totally get you 👌🏻 On that fork the damper locknut was basically wound all the way down, I set it back to where it was and the preload had the same range of adjustment as per spec but should have mentioned it

@SquidRider 2 ай бұрын

You're referring to the 13mm exposed thread above the nut measurement correct? Which can be obtained by measuring 13mm or by adjusting the rebound adjuster all the way out and then back in 3.5 turns and then locking the cap down? I'm currently seeing what the difference may be between using the service manuals 13mm guide vs almost everyone suggesting the 3.5 turn method. I believe the rebound adjuster method will actually work better.

@ComrodMsport 2 ай бұрын

@@SquidRider I’ve not heard of the 3.5 turn method, I will do some research. We are talking about the top cap lock nut on the damper thread. In this video it is all the way at the bottom of the thread. If you change the position of this it obviously changes how far the fork cap can screw down. This in turn effects the preload on the spring and rebound damper adjustment range