Tandem build - half a rant, half questions - Page 3

Gothard · #31 06-14-2019, 03:19 PM

OK, I think I have got it all clear. Get a groupset and buy separate (same brand) mtb calipers and custom length tubing for the rear brake.

Wheels are decided: Leviathan rims with White Industries hubset.

Now: Seatposts: 30.4mm. Besides Bold Precision, which I love, any potential candidates?

bikinchris · #32 06-14-2019, 04:45 PM

IMO the bearings in White hubs are built for weight weenies. Tiny. Fine for singles, but unless they have a tandem specific hub built with stronger bearings, I would go to Phil. CK is the same way, too tiny.

buddybikes · #33 06-14-2019, 05:21 PM

What are you using for handlebars?

We tended to use bit wider bars. On stocker took old pair of bars, then chopped ends off so was like old track bike.

stien · #34 06-14-2019, 06:46 PM

I’ve always had wider bars on captains but am wondering if my preferred size of 38 would be ok.

OPs frame is gorgeous. Can’t wait to see it built.

Gothard · #35 06-15-2019, 06:14 AM

Quote:

Originally Posted by bikinchris

IMO the bearings in White hubs are built for weight weenies. Tiny. Fine for singles, but unless they have a tandem specific hub built with stronger bearings, I would go to Phil. CK is the same way, too tiny.

Are you sure of that?

Rant on: The XMRT, built for tandems, is a 145mm OLD, Qick release. My Tandem is 142X12....
White has no tandem specific front hub.

The Phil wood rear tandem hub is 145X15 and the front disc hub is 100X15mm (I have 100X12)...

oldpotatoe · #36 06-15-2019, 06:42 AM

Quote:

Originally Posted by Gothard

Are you sure of that?

Rant on: The XMRT, built for tandems, is a 145mm OLD, Quick release. My Tandem is 142X12....
White has no tandem specific front hub.

The Phil wood rear tandem hub is 145X12 and the front disc hub is 100X15mm (I have 100X12)...

Search continues, I see, for a rear hub that's 142/12 TA and also 36h or 40h..

I'd email this gent to see if DT540 rear hubs can be converted to TA..You can use any front MTB hub that's 100/12..if you can find a 36h..

https://www.velocityusa.com/product/...disc-front-hub

techusa@dtswiss.com

Dave Agapito..

Drmojo · #37 06-15-2019, 10:48 AM

Quote:

Originally Posted by bikinchris

Phil tandem hubs. Unless you are racing, overbuild the wheels. Dyad rims 40 hole cross 4. Personally, I would even consider 48 hole rear. But I don't ever want to true my wheels.
No, you can't mix SRAM brake parts with Shimano. SRAM uses DOT fluid and Shimano uses mineral oil. The soft parts and seals for one don't like the other.

We have dyads and phil hubs 32/36
Combined wt of team 320 lbs
Rear disc is sufficient stopping power

PaMtbRider · #38 06-15-2019, 02:49 PM

I just have to ask, shouldn't these details been figured out during the initial frame design process?

happycampyer · #39 06-15-2019, 03:15 PM

Quote:

Originally Posted by PaMtbRider

I just have to ask, shouldn't these details been figured out during the initial frame design process?

I was thinking the same thing—glad someone asked.

Gothard · #40 06-15-2019, 03:24 PM

Well, I commissioned a tandem from someone who knows how to build them has done them for God knows how many years. I was not about to second guess him.
It will all fall into place, I am confident. There are challenges, but it makes things interesting.

New rant: AVT velotech have a Phil rear 142X12 ISO disc hub with 40 holes, which does not exist on Phil Wood's own site...

bikinchris · #41 06-15-2019, 09:41 PM

Quote:

Originally Posted by Gothard

Well, I commissioned a tandem from someone who knows how to build them has done them for God knows how many years. I was not about to second guess him.
It will all fall into place, I am confident. There are challenges, but it makes things interesting.

New rant: AVT velotech have a Phil rear 142X12 ISO disc hub with 40 holes, which does not exist on Phil Wood's own site...

When you spec Phil hubs that aren't plain Jane models, you are usually better off calling them. They are nice people who can do so many options they don't or can't list because it would be confusing.

54ny77 · #42 06-15-2019, 09:58 PM

It's worth a call, email, etc. to these folks on all things tandem.

http://www.tandemseast.com/

Any idea as to target weight? 30's-ish?

Looking forward to seeing that beauty all built up!

oldpotatoe · #43 06-17-2019, 09:13 AM

Quote:

Originally Posted by oldpotatoe

Search continues, I see, for a rear hub that's 142/12 TA and also 36h or 40h..

I'd email this gent to see if DT540 rear hubs can be converted to TA..You can use any front MTB hub that's 100/12..if you can find a 36h..

https://www.velocityusa.com/product/...disc-front-hub

techusa@dtswiss.com

Dave Agapito..

Answer from Dave, DT540 rear hub not convertible BUT there is a DT350 rear hub that is TA/142/12 and 36h...a distributor local to me has them.