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If you want to do a 3x drive train then you pretty much have to go left side timing chain. I wouldn’t hesitate to buy a tandem equipped with left side timing chain, except if it was a mountain bike I’d be worried about damaging it then needing to try and replace it quickly.

@@DoubleTroubleTandem ahhh you mean when actually doing the mountain biking, got ya brother. Big help man

@@thats_mr_b_ We have a 3x9 system, my wife and I had no problems on very long roads shimano deore set

Flow trail isn’t known for being super steep but it has at least a few steeper sections. It is a trail that I think is fun for all skill levels. Beginners can take their time and experts will bomb it at high speeds including the corners. First time we went down (early in my stoked learning to ride) we road the brakes and went less than half the speed we do today. If you manage the speed from the start then you’ll probably be fine. All that being said, I’d suggest riding it on a single once to get an idea if you’d feel comfortable.

Custom made. I used a mount from old aero bars. The seat post is the same size as the intended handle bar. Then I bought a strait carbon tube that was the same diameter as the old aero bar. Then you use an off the shelf GoPro pole mount. The biggest issue is when you take it close to trees and it gets caught.

Yep, both cranks are 3x rear and front are both timing chain on the 64bcd. Front gets a bash guard on one side of the 104 BCD (doesn’t matter what side). Rear cranks have the driving chain ring on center and could also have a bash guard on the outside, if needed (the Ridebo doesn’t have one because you can’t bash the rear ring)

You can buy them but they’ll be sized for a standard front chain ring. Usually the smallest you can get is for 30 or 32T. Works well for the back but it’s bigger than needed if you’re running only a small ring in front. On our newest bike we had a friend with a CNC mill us a custom one out of high density plastic and made it just bigger than the spider’s arms.

From my reading I’ve seen most people recommend in phase or 90 degrees out of phase like you suggested. Personally I’ve only tried in phase or variable out of phase (independent coasting). The reason why I haven’t tried a fixed offset has to do with knowing where the pedals are as the captain. If you’re cornering or trying to avoid an obstacle, if you’re out of phase then you have to account for that. I found that the pedals not being synced felt less stable, especially when standing. When my stoker is in phase I didn’t feel as if I was fighting the shifts in their body weight. Maybe if the offset was fixed it would be okay, but it was quite difficult with the independent coasting. If you try mountain biking with the 90 offset and like it let me know. I’d be curious to hear how it goes.

From my 10000 kms experience on tandem (Portugal) I say that pedals in phase are crucial to start motion on steep climbs (or sand, for example) and they help to keep rythm on climbs. We've never tryed 90º, but sometimes the chain jumped out and we rode a few kms with a slight degree difference, it was horrible.

Tried it, didn't like it. Cornering is trickier, as someone else posted climbing out of the saddle is harder. Also, the pedal stroke was not as smooth. The disadvantages outweighed the pros for us!

the most fun bike tandem

Thanks! Yeah I like the true follow perspective. Going to have to bribe more people to come out to follow us 🙂

@@DoubleTroubleTandem I wish we were there to take turns.

That would be awesome!

Hi Ben, thanks! I use the data from my Garmin/phone and Garmin Virb software. I edit the movies as a continuous run in Premiere, export, add overlays in Virb, and then if I want to edit portions out I do another edit in Premiere.

I use the data from my Garmin/phone and Garmin Virb software. I edit the movies as a continuous run in Premiere, export, add overlays in Virb, and then if I want to edit portions out I do another edit in Premiere. Hope that helps!

The bike has been fantastic! No mechanical issues what so ever. We were super excited when we got that big cheer on! The rear mount we have set up now works really well. I’m going to switch from the gopro plastic handle bar mount to an AL one. The GoPro max has lense protection and an AL cage on it so it can take a blow. I’ll post some photos of the setup at some point for people to copy. The big issue is the part to mount it to the post is from an old aero bar set. Maybe I can convince one of those vendors in China to make them for cheap if I can show enough interest for folks to buy them.

and yes my name has the name of my country

Yeah your new bike is kick ass too. You get a new spider all sorted out?

@@DoubleTroubleTandem yep, we are running a square taper setup more and it's been super reliable! We should meet somewhere someday and do a collab.

Awesome! Appreciate it. We’re you there guy who followed us in from the ridge or did we see you at the waterfall? It was quite the day out there. So many folks out there sessioning that section last weekend, it was crazy! Lots of fun to see everyone’s take on what path to follow.

@@DoubleTroubleTandem Just saw you guys at the waterfall :) Here's my video where you were coming down czcams.com/video/rY3H-ifpLYU/video.html

Yeah, I road into that blind which I think I won’t ever do at that area again. Too many changes. The bike looked perfectly fine after a bath. We actually crashed twice yesterday.

You’re welcome. Glad you enjoyed it!

Thanks! Yeah it’s always one of those hit or miss places. When we went there I had no expectation that we could/would make it. We tried it once before on the hard tail tandem and didn’t make it over the first few rocks. Was one of those days when you’re pleasantly surprised!

@@DoubleTroubleTandem very cool. I was gonna ask you a while back how this bike is as a climber. I know you built it with a bias toward DH but this video proves that it's a competent climber too! 👍

😬. Only if we were as fast as you uphill...

Thanks! The dirt is nice right now, it’s a good time to do the Wall.

CONGRATS! Super impressive to clear Manzanita wall, r/h or center!!

The frame is built by Kinethic Handmade Bikes in Spain (www.Kinethic.com). They’ve made a lot of tandems but this was their second full suspension tandem (tandeminium2 on facebook has the first). I had the wheels hand built at Roaring Mouse (near San Francisco). I chose the components and built the bike. I’ll be posting a video with more details on the build in the next few weeks 😀.

I am unaware if those who say they are illegal are correct or just trying to prevent more riders from using their local trails. I know they are unsanctioned but they are linked via sanctioned trails and roads. The entrances of the trails are easy to spot and it is just plain silly to think that the rangers and land managers aren’t aware of exactly where we enter and exit of the more popular trails are. I am a member of multiple rider groups and I do not know of anyone that has been personally ticketed or asked to leave these trails (its a lot of people, greater than 100, who ride these trails often). There are a few trails that have do not trespass signs on the entrances and I have heard (second hand) of these trails being ticketed. When in other areas, illegal trails are periodically disrupted and frequently labeled with no trespassing signs which does not happen here except on those trails already labeled as such. I feel that I shouldn’t censor those who want to state these trails are illegal, especially if it turns out to be true and someone gets a citation for being on these trails. I have removed the names from my description and have removed it from the title slide (well, its in progress, the movie editor is currently broken for this movie so I am waiting on their support response) which I’d like to think is a reasonable compromise on my part.

Just to give you an idea, the trail in this video isn't one of the more popular ones. I just looked up the Strava stats on one of the popular trails in this area and there was 16 people who road it today (a Thursday) and 1,758 people have ridden it this year.

@@DoubleTroubleTandem as I said before and from your video it looks like a well ridden and worn in trail for a trail that is said to be illegal. And like you said a truly illegal trail would 1.) most likely have some "no trespassing" signs; and 2.) the authorities would most definitely know about this trail being used as much as it appears to be and would most likely have done/be doing something about it. And lastly if it was a real illegal trail I don't think it would appear to be as ridden and well worn in as it appears to be. Maybe I'm wrong but that's just my bystander observation(s). After reading through the other comments on here it more or less appears to me that you have a bunch of insecure internet trolls up there in NorCal. I say this also because I've been attacked and berated by one from that area who knows absolutely nothing about me yet thinks he does and I'm all the way across the country. Keep riding man and don't let these trolls intimidate you. Your new bike is sick. Love it. #4heeldrive 👍

@@DoubleTroubleTandem To give you an example of something that happened here on our side of the country: Once of our more popular local trails is located on state property which is managed by the county. The property (and hence the trail) was officially closed for a few months due to the covid-19 situation. A few people here and there ignored the closure and rode the trails anyway. One such group of about 3 riders thought they were above the law and it wold be fine to ride the trail anyway when a couple of officers from the local sheriffs department showed up and waited for the riders to come back to the trailhead. My wife & I were passing through the parking area on our tandem and witnessed each of them being issued tickets for trespassing. So I would think that if the trail you rode was truly illegal then similar things would be happening there.

Thank you for the constructive feedback. I love how eloquent you were. I really love receiving feedback from someone who has such a vast portfolio of experience and takes the time out of their busy day to help me improve. Please subscribe so I can show you that your opinion really matters to me. Best Regards, Mr. No

@@DoubleTroubleTandem This reply made me laugh....almost as much as you two trying to push that bike up the hill. Keep posting illegal trails, nice work. 👍🏼

@@jkamer2168 I've received that feedback, next time there wont be a trail name if its.. cough... unsanctioned

Hi Charles, I am not trying to upset anyone. I went ahead and blurred out the trail name in the video and removed it from the description to try and be respectful of you and the other similar comment. I'm not sure why filming is an issue when there is no identifiable landmarks as a video like this and could be anywhere in the greater Santa Cruz area. I am a 'Trail Hero' member of MBSOC and am very interested in mountain biking in the bay area being sustainable and accessible to everyone.