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Mojo HD3 Picture and Build Thread

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416K views 1.7K replies 301 participants last post by  macduff  
#1 ·
New bike means time for a new sticky thread! Here's my build, waiting on delivery of frame in December.

Frame: HD3, Large, Blue
Fork: Pike RCT3 160mm
Wheels: Chris King (red) and Derby Rims built by MikeSee (LaceMine29.com)
Tires: Schwalbe Rock Razor and Magic Mary Super Gravity
Brakes: Hope E4 Black 203F 183R
Cranks: RaceFace Next DM 32T
Rear Derailleur: XX1
Shift Lever: XX1
Cassette: XX1
Headset: Chris King I2 Red
Grips: ESI Racers Edge
Handlebars: RaceFace SixC 35
Stem: RaceFace Atlas 35
Seatpost: KS Lev Integra 150mm
Saddle: Chromag Moon

Everything but the Magic Marys (i'll run HRIIs till they come in), wheels and frame is ready to go.

What does everyone else have in the plans?
 
#1,550 ·
She wants to keep it because it's color matched to the frame.....it's a chick thing haha.
I noticed the bling red and blue fork decals. That should have been enough of a hint to make me realize that the fork came with the frame.

I have actually got this fork to feel very plush although I only have 45 psi in it to get the correct sag for her weight.
I just read an article that said that everyone uses too much pressure in their forks. I've got about 15% less pressure than Fox recommends for my weight, but maybe I should go lower then dial in some more LSC damping to prevent brake dive and pedal bob. The problem is I want more spring off jumps, and I read that pumping is a slow speed shaft event, so with more LSC damping I'll lose some of my pump energy to heat in the oil, and that energy won't be available to rebound the fork and throw me into the air.

I ride a pivot Mach 6 that weighs less than 25 lbs with a dropper post and I like the over all feel of the hd3 better....
After demoing a Mach 6 back to back with an HD3, I wanted the HD3.

Just wondering what rear derailleur are you using I have had sram clutch derailleurs make a nasty sound and be hard to track down, and need lubing to silence them. Just a thought it could be that and not the hub. Have a good one.
I'm using a new Shimano XT8000 SGS rear derailleur. However, I was going to try lubing the rollers at some point and I forgot, so thanks for the thought! I'll try concentrating my efforts on the rear derailleur. I can't duplicate the creaking on my workstand, so I don't know for sure where the creaking is coming from. I did put tension on my pedal while I held the the rear wheel with my hand, then I rotated the pedal to see if I could make the rear derailleur creak.
 
#1,551 ·
I noticed the bling red and blue fork decals. That should have been enough of a hint to make me realize that the fork came with the frame.

I just read an article that said that everyone uses too much pressure in their forks. I've got about 15% less pressure than Fox recommends for my weight, but maybe I should go lower then dial in some more LSC damping to prevent brake dive and pedal bob. The problem is I want more spring off jumps, and I read that pumping is a slow speed shaft event, so with more LSC damping I'll lose some of my pump energy to heat in the oil, and that energy won't be available to rebound the fork and throw me into the air.

After demoing a Mach 6 back to back with an HD3, I wanted the HD3.

I'm using a new Shimano XT8000 SGS rear derailleur. However, I was going to try lubing the rollers at some point and I forgot, so thanks for the thought! I'll try concentrating my efforts on the rear derailleur. I can't duplicate the creaking on my workstand, so I don't know for sure where the creaking is coming from. I did put tension on my pedal while I held the the rear wheel with my hand, then I rotated the pedal to see if I could make the rear derailleur creak.
Braditude is dead on-seems this is a widely known issue with Sram's 11 speed derailleurs. My very own X1 level derailleur didn't even last 7 months or so before the creak of death set in. For more details and a fix, see link https://www.pinkbike.com/news/tech-spotlight-identifying-and-correcting-rear-end-creaks.html Be warned that attempting the repair can go awry and SRAM will void your warranty.

Later gens like the Eagle 12 speeds might not have this issue but I've since switched camp to the good old Shimano XT derailleur (super crisp when paired to the XTR shifter)- works very well with SRAM's 11 speed cassette. Being a year now and derailleur still runs silent!
 
#1,553 ·
Can any of you guys help me out with some advice on rear shocks please?

My HD3 came with the DPS shock which has been great, but gets a little overwhelmed on longer decents. I've picked up a 2018 X2 but this is where the confusion starts.

My understanding is that the 2017 X2 with the standard off the shelf shim stacks and oil worked fine on the HD3 so replacement shocks were easy to get.

I've also recently read that the 2018 X2 is more linear than the previous version. Am I going to need a shim and oil change to get the most out of this shock or will I be able to find the sweetspot on the 2018 X2 I've just had delivered?
 
#1,554 ·
I recently bought an HD3 with a 2018 X2 (Aftermarket) shock. I am about 6', 200lb geared. The shock works really well. I went with factory settings, sagged the shock at 205 psi. And backed off of the factory compression settings (HSC/LSC) about three clicks less compression damping ( meaning that I turned the dials counter clockwise 3 clicks).

I am using about 3/4 of the travel and have not noticed any bottoming out.


The key to the X2 shock is cycling thru the travel (10x) as you're inflating the shock, every 50 psi.
 
#1,556 ·
Thanks saidrick, that's reassuring. Powert01, it's perfectly normal on modern shocks with negative air chambers. The negative chamber is filled by a little dimple that allows air to pass from the positive chamber at 25% travel.

Balancing regularly as mentioned above means there's only ever 50 psi (ish) difference to fight to balance the shock. If you filled the positive chamber in one go two things would happen. It would be very hard to compress the shock and once you did, the pressure you'd set in the shock would drop as it filled the negative chamber.
 
#1,557 ·
I just got a new set of wheels - Hope Pro 4 Boost hubs and DT Swiss EX511 rims. Oh joy... downside, somehow suddenly my cassette sits to far out and I can't shift down to the smallest cog. Tried to put the chain on the smallest cog by hand and realized that the chain gets stuck between derailleur hanger and cassette. Could anybody here who runs a Hope Pro 4 hub measure how far the end cap sticks out from the edge of the smallest cog? Comparing with my previous DT Swiss wheelset I am missing 2-2,5mm. Really odd. I have no explanation how that is possible.
 
#1,558 ·
Tried to put the chain on the smallest cog by hand and realized that the chain gets stuck between derailleur hanger and cassette.
Are you running a SRAM XD cassette?
If you are, sounds like the cassette hasn't "seated" all the way down on the Driver Body. I've had SRAM cassettes hang up on the body, not seat all the way down, and do exactly what you're describing.
 
#1,562 ·
Free hub is all the way in. SRAM X01 cassette on XD driver. I contacted Hope and they asked me to measure the end caps. I was already suspecting that they were wrong. Drive side should be 16,6 and is 14,6 on my wheel. Non-drive side should be 20 and is 18mm on my wheel. So I guess new endcaps and I should be fine.
 
#1,567 · (Edited)
Very long term review

... had the HD3 since they first came out. Many changes but still loving the bike.

What's worked:
- shifting from L to XL size and -1 headset. Changed it from a burly trail bike to something way more capable. I'm 6'
- derby rims. Bulletproof. Multiple minion tyres destroyed by rocks. Rims scarred but still going very strong.
- sram X01. many chains later - still on original cassette and shifting a dream.
- new lyrik with torque caps and fast damper - very capable and solid. A worthy upgrade over the pike.
- topaz. took some tinkering but works very well. Easily user serviceable
- sixc 30mm rise bars. Did the Trans Savoie. Recalibrated what I thought was steep. Got higher rise bars as a result and they work so much better in that type of terrain
What didn't
- original linkages. Worn out in 6 months. Put in enduro bearings and now they last
- reverb. Two warranty repairs. When it works its great. Now riding with a bikeyoke and its super smooth.
- esi grips. went through them every 2 months. Trying DMR deathgrips. so far, so good.

As you can see, cleaning it isn't a priority.:) I plan on keeping the bike a fair while longer.
 
#1,568 ·
Brads hd3 build

After doing a light hd3 build for my wife I liked the bike so much that I had to build one for myself. I used some heavier parts on my build and have to get a dropper post, the weight of this bike as its sits for now is 25.7 lbs.
- medium frame
- fox 36 fork
- float x2
- light bicycle 35 mm carbon wheels
- i9 hubs
- next sl cranks
- phenom carbon seat
- xtr brakes
- Easton ec90 handlebar
- sram xx1 shifter, derailleur, cassette
- xtr pedals
- rocket Ron 2.6 tires
- wren 50mm stem
A super fun bike to ride, great climber and snappy handling. I put it together mostly with parts I already had, bought the frame used and have a fraction into it of what it would cost retail. I could not be happier with this bike. Cheers
 

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#1,569 ·
After doing a light hd3 build for my wife I liked the bike so much that I had to build one for myself. I used some heavier parts on my build and have to get a dropper post, the weight of this bike as its sits for now is 25.7 lbs.
- medium frame
- fox 36 fork
- float x2
- light bicycle 35 mm carbon wheels
- i9 hubs
- next sl cranks
- phenom carbon seat
- xtr brakes
- Easton ec90 handlebar
- sram xx1 shifter, derailleur, cassette
- xtr pedals
- rocket Ron 2.6 tires
- wren 50mm stem
A super fun bike to ride, great climber and snappy handling. I put it together mostly with parts I already had, bought the frame used and have a fraction into it of what it would cost retail. I could not be happier with this bike. Cheers
Looks like a sweet bike and a sweet 70 chevelle! Is it an Ls6 motor with rock crusher tranny?!?

Sent from my iPhone using Tapatalk
 
#1,570 ·
Bought an HD3 last weekend from Cal Coast in San Diego.

Image


Rode it once so far at the local trails and it was a blast. For the past 10 years I've only ridden a cyclocross bike so this is a major change. The bike is so nimble, forgiving, and fun.

I'm taking doing San Juan trail tomorrow!

Sent from my iPhone using Tapatalk
 
#1,578 · (Edited)
I finally joined the club

I've been riding a Mojo SL and it has been a great bike. I slacked it out with a 150mm fork and 27.5 front wheel and liked most of the resulting feel. But the side effects were not worth it in the long run: BB height went up, seat tube slack, reach shortened even more, standover height too high, etc. So starting in September I saved an HD3 search on pb and started gauging value and availability. I messaged sellers after my watchlisted bikes got marked as sold to ask them what the final selling price was. In the meantime, I was on here reading up on the HD3 and asking questions.

The day before Thanksgiving a fresh bike popped up for sale, and it was built almost exactly how I would want. Even the color was what I wanted. I have been coaching high performance driving for a couple of years now and last year got certified to teach the Porsche club events. The 917 colorway was calling my name! This let me justify the price to myself (and my wife) and we quickly worked out a sale price and paid for it with shipping to come on Monday after the holiday weekend. I won't go into every detail of why it took a month longer to finally get my hands on it, but it involved the seller dropping the bike upside-down and cracking the top tube, getting a refund, Ibis coming through with a crash replacement, redoing the sale, building the bike back up, shipping, FedEx messing up resulting in my having to chase down the driver on a Saturday afternoon, and finally getting my first ride on Christmas eve day.

The wait was worth it! It improves on everything that I liked about the SL with none of the drawbacks. You guys know: it climbs really well, responds to inputs instantly, challenges you just enough on the downhills to make you a better (not lazier) rider. Fantastically fun all mountain trail bike. I haven't weighed it yet, but subjectively feels lighter than the SL.

Specs:
2015 Ibis Mojo HD3
New replacement front triangle
Ibis 741 Wheels
Maxxis Minion WT tires (DHF 2.5/DHR 2.4)
X0 carbon cranks with Eagle 32T chainring
Sram GXP BB
KMC SL Gold chain
X01 10-42 cassette
XX1 derailleur
X01 shifter
Guide RCS brakes (new)
KS Lev 125mm dropper
RF ATlas 50mm stem
SixC 760mm bar


 
#1,581 ·
I’m loving my HD3 more and more every time I ride it! The bike is so capable. I am the limiting factor and it does not disappoint when I go for it.

I bought an accugage 30psi gauge and it makes a world of difference to know the actual pressure of the 2.8 tires. My floor pump registered at 20 psi but upon receiving the gauge I found it was a mere 8 psi.

Today I ran them at 22 psi according the accugage and will spend some time finding psi that works best for my everyday rides.

Hoping to do San Juan trail tomorrow am!


Sent from my iPhone using Tapatalk
 
#1,584 ·
I like it! My shake down ride was down Noble Canyon. Bike handled it pretty well. Couldn't tell any negative effects while climbing. Technically the bike always ripped. There were a few OS moments were I thought I was going over but the bike just took it! I still wanted to keep some of the snappiness of the HD3, but improve the DH capability, so I went with the -1*. It was the right choice.