[Closed] 2021 Debonair upgrade help, somethings not right!

there's not a lot that can go wrong with the installation process. generally they fit correctly or not at all, so the only thing I can think is that you've accidentally ordered the wrong air shaft.

there’s not a lot that can go wrong with the installation process. generally they fit correctly or not at all, so the only thing I can think is that you’ve accidentally ordered the wrong air shaft.

This is exactly what I was thinking. I checked and rechecked the packaging and it definitely said 150mm.

I even phoned TFtuned before fitting to confirm it was right as the airshaft was over 2cm longer(there is a red foot nut on the bottom of the new shaft and it was the length of that longer)

let air out and see if it does actually have more travel. The airshaft is longer, how do you think it achieves the effect?

let air out and see if it does actually have more travel. The airshaft is longer, how do you think it achieves the effect?

How do I tell by letting the air out if it has more travel, doesntthe fork just suck down as air is released.

Also I get that it will be longer but over 2.5cm longer for the same size airshaft?

I fitted them and my forks went together ok but now on compression there is a slight judder to the fork?

I'd drop the lowers and check you've not pinched the foam ring when you've re installed them.

Before i carried out the upgrade my fork sat on the 10% sag line for 150mm forks with the correct air pressure for my weight.

Without you on the bike?
You sure it wasn't a 140 air shaft in there?
Did you compare old with new air shafts length wise?

Without you on the bike?
You sure it wasn’t a 140 air shaft in there?
Did you compare old with new air shafts length wise?

My fork is the original one that came with the bike which is meant to be a 150mm 29er. Previously with the fork at the correct pressure for my weight it would sit on the 10% sag line without me on the bike.

Now with the new debonair air shaft and at the same air pressure it sits 2.5cm higher than the 10% sag line and exposed stanchion is over 160mm.

before I fitted them I put the airshafts side by side and the new one is longer by the length of that new red foot nut, which is around 2 cm. I even phoned TFtuned as I had my concerns but he said it was right.

Im just wondering if its the wrong shaft for my fork. my fork is a 2017 model so A1 however its fitted with the newer top cap that requires the cassette tool to remove it and and has some stickers on the side that mention torque caps? So im wondering if its a bit of a mongrel fork as the bike is a 2018 model.

Previously with the fork at the correct pressure for my weight it would sit on the 10% sag line without me on the bike.

That's not right.(unless the sag markings are for a different travel).

exposed stanchion is over 160mm

Exposed stanchion isn't the same as travel.

Yes the stanchion should measure just over 160 with a 160 air shaft in.

Also the sag setting markers now no longer correlate to the sag.

Are you trying to set sag for 160 my looking at the sag indicator for 150?
The travel of your old airshaft should be marked on the end of the shaft.

A1 was never fitted with the new bb socket aircap.

Maybe you have a MY18 fork?

My old airshaft had the numbers 030 on and not the travel as I was expecting to see.

Are you trying to set sag for 160 my looking at the sag indicator for 150?

No, Im trying to set it for the 150mm its meant to have if that makes sense.

A1 was never fitted with the new bb socket aircap.

Maybe you have a MY18 fork?

My fork number starts 44T7 so I was told this is a 2017 fork. I also gave TFtuned the number before ordering.

You’ve definitely got all the new spacers, seal head and whatnot?

Looking at those diagrams a 2021 air shaft with the old seal head would let the forks extend too far.

You’ve definitely got all the new spacers, seal head and whatnot?

Looking at those diagrams a 2021 air shaft with the old seal head would let the forks extend too far.

Yes, they sent me a complete new air shaft with all the bits fitted so it was a one for one swap

Ive just put my fork serial number into the Rockshox site and it says my fork is a B1 not an A1 fork even though its a 2017 model.

Is there a difference between the length of the air shafts on an A1 and B1 fork?

The new airshaft was designed to stop the suck down so it should be sitting at topout with no weight on it. The air shaft sits about 2cm higher in the fork to achieve this. This means your fork should sit higher. If the fork is sitting beyond the sag markers then your negative air chamber has not filled with air.

Is there a difference between the length of the air shafts on an A1 and B1 fork?

TFTuned page says there is. Looks like you do have the wrong air shaft.

Thanks poah, just seen you replied on MTBr too.

What would prevent the negative spring from equalizing, I made sure the dimple are was thoroughly clean and free of grease before assembling

If they have sent me the wrong air shaft for my fork would that prevent it from equaling out?

TFTuned page says there is. Looks like you do have the wrong air shaft.

Dammit!

if its any consolation I ordered 6 puple bolts and 6 washers from ebay but they only sent 5 washers. So stem on wife's bike currently has 5 purple bolts and one silver @(

Props to Tftuned, Ive just spoke with them on the phone and they are going to send out the correct shaft for my fork!