T50 - whatcha planning to build.....

DavidJL

DavidJL

Well-Known Member
I um using an Origin8 double crank, 110 mm bolt circle with a 113 mm spindle and have a great chainline. Actually, this is basically what's on the QX100 bike. It looks like a triple crank would work, but it would be very close if it did. Wondering if triple cranks will disappear, because a triple crank with a straight block cassette gives a nice wide range with closely spaced gears.
 
NeaL

NeaL

Guru
I'm right on the verge of ordering three T50 frame sets for my kids. Ol' dad is still going to have his beat-up Sofrider and hopefully a trike, soon.
Tangent: I'm currently considering between a Trident Trike Titan, Terratrike Magnum XL, ICE Adventure HD, or a Greenspeed Rover. If anyone knows of any other brands of trikes offering a model with a 300lbs rider weight capacity rating, please let me know.

Since these T50s are for my kids, and I'm not all too familiar with the hardware parts, standards, tooling, compatibility, sources, brands, etc. for all of the other needed components, we'll be working with a local bike shop for sourcing parts. I like doing what I can to help support small brick & mortar, mom & pop businesses, anyway.
I know my kids will want things to be colorful. Well, except my son. He wants black, all black, a stealth bike, but once he heard that red-colored cable covers are available, he's thinking of all-black but with some red accents.

I don't know if anyone else here is into archery but there's a brand called Genesis which makes youth bows. The brand is sorta a spin-off from their parent company, Mathews. Yes, that's spelled correctly with only one T in it.
On the Genesis website is a really cool feature for building your own bow with a wide variety of color choices. My kids have had a lot of fun on that site, trying out all of the possible color combinations they could come up with.

Give it a try. Scroll down and test it out. Wouldn't something like this be awesome for bicycles, too?
https://www.genesisbow.com/byo/

Since there isn't a similar website for youth bikes, that I know of, we'll just have to use our imaginations. Hopefully their interests in bicycling will have enough longevity that their bikes will continue to change and upgrade over time.

From the Cruzbike accessories page, we'll also be getting rear racks for each of them. I'm hoping to take the kids on bike-packing camping trips up along the C&O canal, so we'll need tires for dirt & gravel roads and paved surfaces. As much as I like the efficiency of a single ring on the front, I also like having as full a range of options as possible in case they're ever needed. But these are for the kids, so they'll be choosing what they want, as the bike shop guy and I talk it over with them. The components don't need to be top-of-the-line, but no cheap crap parts, either.

I'll post pictures later when the builds are done. I should have just held off on posting but the anticipation has me feeling really anxious to jabber about it right now.

UPDATE, Friday 01 December 2017: Three T50 frames now ordered! Whoo-hoo!
 
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super slim

super slim

Zen MBB Master
NeaL said:
I'm right on the verge of ordering three T50 frame sets for my kids. Ol' dad is still going to have his beat-up Sofrider and hopefully a trike, soon.
Tangent: I'm currently considering between a Trident Trike Titan, Terratrike Magnum XL, ICE Adventure HD, or a Greenspeed Rover. If anyone knows of any other brands of trikes offering a model with a 300lbs rider weight capacity rating, please let me know.

Since these T50s are for my kids, and I'm not all too familiar with the hardware parts, standards, tooling, compatibility, sources, brands, etc. for all of the other needed components, we'll be working with a local bike shop for sourcing parts. I like doing what I can to help support small brick & mortar, mom & pop businesses, anyway.
I know my kids will want things to be colorful. Well, except my son. He wants black, all black, a stealth bike, but once he heard that red-colored cable covers are available, he's thinking of all-black but with some red accents.

I don't know if anyone else here is into archery but there's a brand called Genesis which makes youth bows. The brand is sorta a spin-off from their parent company, Mathews. Yes, that's spelled correctly with only one T in it.
On the Genesis website is a really cool feature for building you own bow with a wide variety of color choices. My kids have had a lot of fun on that site, trying out all of the possible combinations they could come up with.

Give it a try. Scroll down and test it out. Wouldn't this be awesome for bicycles, too?
https://www.genesisbow.com/byo/

Since there isn't a similar website for youth bikes, that I know of, we'll just have to use our imaginations. Hopefully their interests in bicycling will have enough longevity that their bikes will continue to change and upgrade over time.

From the Cruzbike accessories page, we'll also be getting rear racks for each of them. I'm hoping to take the kids on bike-packing camping trips up along the C&O canal, so we'll need tires for dirt & gravel roads and paved surfaces. As much as I like the efficiency of a single ring on the front, I also like having as full a range of options as possible in case they're ever needed. But these are for the kids, so they'll be choosing what they want, as the bike shop guy and I talk it over with them. The components don't need to be top-of-the-line, but no cheap crap parts, either.

I'll post pictures later when the builds are done. I should have just held off on posting but the anticipation has me feeling really anxious to jabber about it right now.
Click to expand...

I would go for a 20" front 26" rear, especially if going on dirt roads, so the rear derailleur does not put the chain 1/2" away from the ground if using a 1.3 or 1.5" rear tyre!

HP Velotechnik Geko 26, Folding F20" R 26" NO with suspension, 130 kg (330 lb) rated, ackerman cross link steering for high speed stability, 40mm tyres + mesh seat for suspension (needs 50 mm tyres at 35 psi)
http://www.hpvelotechnik.com/produkte/gekko_fx26/index_e.html
http://www.hpvelotechnik.com/produkte/gekko_fx26/technik_e.html
https://hostelshoppe.com/HP-Velotechnik-2018-Gekko-26-39005/ $1890 from Hostel Shoppe

Greenspeed Magnum XL, Folding F20" F 20" NO with suspension, 181 kg (400 lb) rated, ackerman cross link steering for high speed stability, 50mm tyres + mesh seat for suspension (WORKS WELL!)
https://hostelshoppe.com/Greenspeed-2017-Magnum-SD-30642/ $3290 from Hostel Shoppe

HP Velotechnik Scorpion 2 30 speed, Folding F20" R 26" REAR suspension, 130 kg (330 lb) rated, ackerman cross link steering for high speed stability, 40mm tyres + Hard shell seat (needs 50 mm FRONT tyres at 35 psi)
https://hostelshoppe.com/HP-Velotechnik-2017-Scorpion-2-30spd-39067/ $3790 from Hostel Shoppe

I would look for second hand trikes of these models as MUCH cheaper!!!
 
Suz

Suz

Well-Known Member
NeaL said:
I'm right on the verge of ordering three T50 frame sets for my kids. Ol' dad is still going to have his beat-up Sofrider and hopefully a trike, soon.
Tangent: I'm currently considering between a Trident Trike Titan, Terratrike Magnum XL, ICE Adventure HD, or a Greenspeed Rover. If anyone knows of any other brands of trikes offering a model with a 300lbs rider weight capacity rating, please let me know.

Since these T50s are for my kids, and I'm not all too familiar with the hardware parts, standards, tooling, compatibility, sources, brands, etc. for all of the other needed components, we'll be working with a local bike shop for sourcing parts. I like doing what I can to help support small brick & mortar, mom & pop businesses, anyway.
I know my kids will want things to be colorful. Well, except my son. He wants black, all black, a stealth bike, but once he heard that red-colored cable covers are available, he's thinking of all-black but with some red accents.

I don't know if anyone else here is into archery but there's a brand called Genesis which makes youth bows. The brand is sorta a spin-off from their parent company, Mathews. Yes, that's spelled correctly with only one T in it.
On the Genesis website is a really cool feature for building your own bow with a wide variety of color choices. My kids have had a lot of fun on that site, trying out all of the possible color combinations they could come up with.

Give it a try. Scroll down and test it out. Wouldn't something like this be awesome for bicycles, too?
https://www.genesisbow.com/byo/

Since there isn't a similar website for youth bikes, that I know of, we'll just have to use our imaginations. Hopefully their interests in bicycling will have enough longevity that their bikes will continue to change and upgrade over time.

From the Cruzbike accessories page, we'll also be getting rear racks for each of them. I'm hoping to take the kids on bike-packing camping trips up along the C&O canal, so we'll need tires for dirt & gravel roads and paved surfaces. As much as I like the efficiency of a single ring on the front, I also like having as full a range of options as possible in case they're ever needed. But these are for the kids, so they'll be choosing what they want, as the bike shop guy and I talk it over with them. The components don't need to be top-of-the-line, but no cheap crap parts, either.

I'll post pictures later when the builds are done. I should have just held off on posting but the anticipation has me feeling really anxious to jabber about it right now.
Click to expand...


Hi Neal, I have a Terratrike for sale. I can post pictures later if you are interested. I'm asking $1500. The only problem is I have no idea what shipping would cost. We can chat about it if you are interested. Here are the specs.

• Model: Wiz Wheelz Terra Trike Access - Cosmic Orange
• Boom Length: Adjustable Boom
• Front Gearing: Schlumpf High Speed Drive 27/67.5 170mm cranks
• Front Derailleur: N/A Schlumpf drive. (The Schlumpf drive basically gives you a high 8 and a low 8 speed.)
• Rear Derailleur: N/A Internal Hub
• Front Wheels: Stock Aluminum Wiz Wheelz Wheels
• Rear Wheel & Gearing: Shimano Nexus 8-Speed Premium Hub: Sun City Lite Custom Hand-Made
• Front Tires: Schwalbe Marathon Plus 20 x 1.75 tires
• Rear Tire: Schwalbe Marathon Plus 20 x 1.75 tire
• Idlers: Terra Cycle AL Front and Stock Delrin Rear
• Chain: KMC Z72 8-Speed Chain - STOCK
• Pedals: Stock Platform Pedals
• Brakes: Unique 160mm Disc Brakes
• Brake Levers: Stock Promax Brake Levers
• Front Shifter: Grip Only (no shifter, due to Schlumpf drive)
• Rear Shifter: Shimano Revo Twist Grip
• Seat: Stock Mesh Seat
• Fenders: Large Rear Fender
• Safety Mirror: Double Mirrors
Tool Bag

Edit: I just realized this may not be weight rated for 300 lbs.
 
super slim

super slim

Zen MBB Master
Paruig said:
My T50 is now a T20
  • Silvio bars
  • 1 x 11 drivetrain
  • 150mm cranks
  • Carbon Seat
  • Ventisit seatpad
  • 26x2.3" tyres
I want to find a stem with less rise to match the boom angle.View attachment 6133
Click to expand...

That looks very good and comfortable!

Could you please take some photos showing the mounting of the seat base, and the two rear stay top and bottom connections, and the stay dia, wall thickness.

How much side and top clearance do you have on the front tyre to the fork?

I think that the Emaljay conversion for a Silvio V1.0 BB tube and handlebar Slider tube arrangement will give a stronger power triangle!
http://cruzbike.com/forum/threads/qx100-steering-mod.10853/

Hopefully the new QX100 will have a Emaljay front end, hopefully with the handlebar Slider tube being LARGER than the BB tube, so stronger, like the Silvio V2.0 onwards.
 
kling

kling

Active Member
Thanks for all the tips and inspiration. Have built a 1x12 T50.
By the time I ordered components, SRAM GX Eagle was available and was intrigued by the possibility (piqued by Lim's post).

Copy of Doug Kline's T50, apart from GX Eagle groupset (XG-1275 10-50 cassette, trigger shifter, 170mm crankset, 32t chainring) and PDW Loading Dock rack

GX Eagle works very nicely. 1x setups rock for MBB.
I haven't tried a steep hill yet, but from riding on flats think have geared the bike a bit low.

TRD Spyre disc brakes are so much better than the Tektro Aquila on the wife's Quest.

Very happy
IMG_6486 (1).jpg

IMG_6471 (1).jpg
 
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rx7mark

rx7mark

Guru
Gearing- I have the GX 11spd 11-42 with a 42 tooth chaining and 26inch wheels with 1.85 tires. I have been riding my T50 for about 6 months and only occasionally wish for either a lower gear or a higher gear. With your 10-50, I would think a chaining in the 40-48 size would be perfect, depending on you priorities.

My gear range: 28.39 to 108.43

Your current range: 18.17 to 90.83 definitey geared for low speed and extreme hills.

With a 42: 23.84 to 119.22. Nice range!

With a 40: 22.71 to 113.54 also nice!

With a 38: 21.57 to 107.87 most of your existing low end and matches my top end.

With a 48: 27.25 to 136.25. Maybe a little fast for a T50?

I wish I had known about the 12spd when I purchased mine. Might try a conversion to 11-49.

Mark
 
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kling

kling

Active Member
Thanks for the insight into the gearing calculations Mark.

I looked at your Wald=>Soma Gator handlebar migration discussion and have now reversed my handlebars to allow a more relaxed arm position.
 
B

Benthead

New Member
Very nice result. I have struggled with getting mudguards. What size tyres do you have and what make of mudguards?

Thanks
Graham
 
Lief

Lief

Guru Schmuru
1) you guys at the left end of the bell curve are rockstars
2) rubber mallets for the win (Plus an old tire and vice grips for getting the steer tube off - no stem/handlebars available)
3) glad I didn’t have a problem with
* off-kilter skewer holes
* locking nut doohickey
* plastic washers
* etc etc

All ya’lls information and discussion here is invaluable.
Thanks for being awesome and thanks to Cruzbike for the platform.

I’ve been away for a while - but my AuburnTigerRed T50 is out of the box and in the stand.
Starting down the build road.

Liking 1x11
Liking 700c but might look more at 20” options for funzies.
Liking @Emeljay steering option
Liking the flexibility and look of Euromesh seat.

It’ll be a slow build but - I’ll keep checking in (now). Maybe one of these days I’ll start a new My Bike Space thread.

@trplay - I haven’t yet seen (found) pics of your Zwift room. I’ll keep looking.

Cheers!
 
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NeaL

NeaL

Guru
I have a LBS kid here saying he recommends only a single-ring crank for the T50 and 8 gears-max on the drive wheel.

Quickly scrolling through this post, I see a couple pics where someone has at least a double ring on the crank but I think in all of those, someone had a S40/v20 style handlebar front end.

Can someone tell me the short and simple answer? Can a 3-ring go on the BB, as-is, or do I need to deviate from what comes in the frame set? How about on the hub/cassette?
 
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