Author Topic: trials cranks  (Read 546 times)

Offline sbroflatland

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trials cranks
« on: January 31, 2019, 01:20:48 AM »
has anyone used trials cranks on there flat bike? i came across some that look pretty cool. also those trials guys are hard on there cranks. i found a spanish isis bb that will make these mount on my bike. also there are isis euro bb available too. the arm length is from 160 - 175. the price is good too.


here are some links to the parts im talking about


isis spanish bb:
https://www.tartybikes.co.uk/splined_bbs/trialtech_sport_spanishstyle_isis_bb/c2p13090.html?pos=526.2744750976562&search_params=YTo3OntzOjEyOiJjYXRlZ29yeV9pZHMiO2E6MTp7aTowO3M6MToiMiI7fXM6MTY6ImNhdGVnb3J5X3JlY3Vyc2UiO2I6MTtzOjg6ImtleXdvcmRzIjtzOjA6IiI7czo5OiJicmFuZF9pZHMiO047czo0OiJtb2RlIjtzOjM6ImFsbCI7czo0OiJzb3J0IjtzOjk6InByaWNlX2FzYyI7czoxMDoiY291bnRyeV9pZCI7czozOiIyMzEiO30%3D


trials crank arms:
https://www.tartybikes.co.uk/cranks_pair/jitsie_forged_isis_cranks/c514p12911.html?pos=494.6405029296875&search_params=YTo3OntzOjEyOiJjYXRlZ29yeV9pZHMiO2E6MTp7aTowO3M6MzoiNTE0Ijt9czoxNjoiY2F0ZWdvcnlfcmVjdXJzZSI7YjoxO3M6ODoia2V5d29yZHMiO3M6MDoiIjtzOjk6ImJyYW5kX2lkcyI7TjtzOjQ6Im1vZGUiO3M6MzoiYWxsIjtzOjQ6InNvcnQiO3M6OToicHJpY2VfYXNjIjtzOjEwOiJjb3VudHJ5X2lkIjtzOjM6IjIzMSI7fQ%3D%3D


https://www.tartybikes.co.uk/cranks_pair/rockman_lite_cranks/c514p10940.html?pos=549.54248046875&search_params=YTo3OntzOjEyOiJjYXRlZ29yeV9pZHMiO2E6MTp7aTowO3M6MzoiNTE0Ijt9czoxNjoiY2F0ZWdvcnlfcmVjdXJzZSI7YjoxO3M6ODoia2V5d29yZHMiO3M6MDoiIjtzOjk6ImJyYW5kX2lkcyI7TjtzOjQ6Im1vZGUiO3M6MzoiYWxsIjtzOjQ6InNvcnQiO3M6OToicHJpY2VfYXNjIjtzOjEwOiJjb3VudHJ5X2lkIjtzOjM6IjIzMSI7fQ%3D%3D

Offline bmxelement90

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Re: trials cranks
« Reply #1 on: January 31, 2019, 06:01:32 PM »
i think you have to get a special sprocket for those. They look cool though!

Offline letsgo

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Re: trials cranks
« Reply #2 on: February 01, 2019, 02:57:01 AM »
They look like any cheap forged cranks that would come stock on a department store mountain bike but for 40 bucks you can't go wrong. 

Offline flatnatics

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Re: trials cranks
« Reply #3 on: February 01, 2019, 04:33:09 AM »
Should work with the old screw on St Martin sprockets. Or any screw on sprocket I guess.
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Offline bmxelement90

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Re: trials cranks
« Reply #4 on: February 01, 2019, 04:33:46 PM »
if you're on a budget you could also get the Sunday Saker cranks that come with a BB for like 60 bucks

http://flatlandfuel.com/sundaysakerv2crankset.aspx

Offline sbroflatland

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Re: trials cranks
« Reply #5 on: February 04, 2019, 02:04:10 PM »
these do mention using a fixie gear on the crank arm. i think this could be an option. i like to use a micro sized sprocket and that is supprising to me how hard it is to find a crank that is 160mm or shorter and will be compatable with a 20t or smaller sprocket. the fixie gears are cheap and easy to get a hold ove. these remind me of the st martin hollow flat cranks but in a 3 piece form factor. and yes the price is right even with shipping from the uk to the us

Offline FlatismŽ

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Re: trials cranks
« Reply #6 on: February 04, 2019, 03:23:58 PM »
Looks the part. I know Middleburn were decent that these kinder of remind me of..
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Offline Paradoxium

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Re: trials cranks
« Reply #7 on: February 14, 2019, 11:12:43 AM »
I'd get a second hand crank set locally instead. Trials bikes are designed differently and use a fixed rear cog and freewheel in the front sprocket. Unless you can get the exact sprocket you want it would be easier to use BMX parts for compatability.

Offline sbroflatland

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Re: trials cranks
« Reply #8 on: February 14, 2019, 01:30:40 PM »
I'd get a second hand crank set locally instead. Trials bikes are designed differently and use a fixed rear cog and freewheel in the front sprocket. Unless you can get the exact sprocket you want it would be easier to use BMX parts for compatability.

its the same as the st martin hollow flat cranks. a fixie gear can be threaded on the same way and are available in many sizes and are easy to come by

Offline Paradoxium

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Re: trials cranks
« Reply #9 on: February 15, 2019, 01:21:52 AM »
For that price then you should go for it.

Offline jbeezy

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Re: trials cranks
« Reply #10 on: February 15, 2019, 10:00:55 PM »
Yes you can use a Fixie rear gear and the lock ring but consider the complete weight. I will add that you can buy complete bmx set for about 100 with bb