[alshead]

^Specialized Fatboy Comp (medium).

 

[ticketchecker]

leaning towards a 100mm for my AL Beargrease, gets me ready for eventual move to bucksaw

 

[alshead]

Okay- got the air shaft to convert my 100 Bluto to 120, plus the RCT3 Damper. Anyone have any info on the conversion? Oil volumes/ weights? The "service manual" link from the SRAM page for the Bluto doesn't even have the Bluto listed on it. Treat it like a SID?

 

[Fat907]

I went 20cc less oil than spec with the RTC3, 4 tokens, and 165lbs........I weigh 230

 

[alshead]

20cc less than what? I just found the 2015 service manual and it lists the Bluto and the oil volumes are the same for it as they are for the SID (with the RCT3), so I'm going to follow those levels.

https://sram-cdn-pull-zone-gsdesign...ev_b_rockshox_oil_air_and_coil_chart_2015.pdf

Any other tips? I haven't worked on a RS fork in a while- pretty straight-forward?

 

[Fat907]

20less than stock.......the easiest fork I ever worked on..took about 25 min to change it to an 80 from a 100

 

[Destr0]

Is the RTC3 damper worth it as an upgrade? I know upgrading to the Pike damper on my XC32 fork changed the ride and made it a lot better.

 

[Fat907]

Go to sram.com click service at top of page click forks then go to page 5 for the newest bluto service manual

 

[Fat907]

Worth every penny.......stock bluto felt soft and slow

 

[alshead]

Fat907- what grease did you use on the Air Shaft? I have some Slick Honey, but the manual says only the RS/ SRAM Butter, or some military grease. Seems like for 20 less than stock on the damper side, you could just pull the old damper and insert the new one without changing fluids... For the air shaft, seems like I just need to remove the rebound adjuster knob and lower bolt on non-drive-side, drain oil, remove the lowers, remove the retaining ring, pull the air shaft out, grease up the new one and install the bumper and floating seals from the old one, and re-install, then add fluids. That's it?

 

[Fat907]

I bought the grease that they spec.....some military p-800 or something like that ..it's red and very tacky

 

[Destr0]

Worth every penny.......stock bluto felt soft and slow

I will have to do this upgrade then. Have a 120mm Bluto coming on Sturgis Bullet, but swapping the Bullet to rigid and putting Bluto onto Bucksaw frame I ordered.

 

[alshead]

I bought the grease that they spec.....some military p-800 or something like that ..it's red and very tacky

Any idea where you got it?

 

[ticketchecker]

20less than stock.......the easiest fork I ever worked on..took about 25 min to change it to an 80 from a 100

curious why you went down to 80

 

[Nurse Ben]

As I understand it, every 10mm increased in fork extension equals ~1 degree decrease in head angle. So working from a 25% sag, compare that Bluto fork length to your stock fork length, consider how increased sag would affect the current feel of your bike, and go from there.

In my experience, more is not always better, especially when you are adding suspension to a frame that is not suspension corrected. Most fat bikes are not going to be suspension corrected unless they are a fairly new design...

My Lurch arrives tomorrow, I'm probably swinging toward 80mm, 100mm if I want a little slack.

 

[Destr0]

Are the air shafts the same on the Reba and Bluto? I have a 100mm Reba and 120mm Bluto coming and was wondering if I could switch the Reba 10 120mm and the Bluto to 100mm by swapping them?

 

[alshead]

As I understand it, every 10mm increased in fork extension equals ~1 degree decrease in head angle.

Every 10mm is equal to ~.5 degrees in HA. So 20mm in fork length decreases the HA ~1 degree.

 

[Nurse Ben]

I was close

 

[pbasinger]

I’ve been running the Bluto around Moab for about 2 months. For me a front suspension fork was the one thing really preventing me from riding the fat bike in the dirt more. The Bluto really helps close the gap between just a snow bike and a bike I take on summer trails.
That said, I think it’s one of the worst feeling RS forks I’ve owned. With 90 psi well bellow the recommend pressure for my weight I find it’s super stiff and has tons of stiction. When I drop the pressure down to a point it moves on small to moderate size bumps it bottoms outs too easily.

I’m not very knowledgeable about suspension stuff. For those that are, do people think this is more of an issue related to the damper or rather a lack of lubrication?

Thanks

Here’s a picture since this thread is lacking.

 

[Mr. Lynch]

Are you running any tokens? Which Bluto model do you have?

I have the 120mm and it came stock with no tokens and I blew thru the travel and woudl bottom out hard on bigger drops. I now have two tokens installed and it is perfect. I was able to lower the pressure a bit which gives it even better small bump compliance, but it ramps up quicker and doesnt bottom as easy.