Comas Entry 920mm 20" Trials Frame

Comas Entry 920mm 20" Kid´s Trials Frame  

• The Comas Entry 920mm bike trials frame is ideal for young riders up to 10 years of age or approximately 1.40 meters tall.
• This is the original Comas Entry frame that comes standard on Comas Entry 920mm trials bikes.

Description and materials
- New Comas Entry 20" frame as a new product in the catalog of the Spanish brand Comas Trials.
- Made of high quality 6061-T6 aluminum, which allows to obtain the best compromise between good properties, low weight and affordable price.
- Features a standard 110mm long, 1 1/8” diameter head tube for internal headsets. It has a large front hole that helps remove any excess material as well.
- Standard 68mm bottom bracket tube, designed to use threaded bottom brackets with standard 1.37”x24tpi thread.
- It comes with 4-bolt mini-bashplate mounts on the BB tube, compatible with Clean, Jitsie, Clean, Bonz and similar mini-bashplates.
- Dropouts are spaced at 116mm and are designed to use snail cams.
- This frame is available only with Postmount disc brake mounts.

The 7 Compatibility Keys
Below you can find the main details you need to consider when installing any components on this frame:

- 1) Headset. This frame has a standard headtube with 42mm inner diameter, compatible with 1 1/8” internal headsets.

- 2) Bashplate. This frame has 4-bolt bashplate mounts on the bottom bracket shell. This means it’s compatible with Comas, Jitsie, Bonz Pro Light, Clean Light and those bashplates with the following dimensions:

         · Distance between front and rear holes: 39-40mm.

         · Lateral distance between holes: 43mm.

- 3) Bottom Bracket. A threaded BB with standard 1.37”x24tpi thread must be used, therefore any traditional or BB30 threaded BBs can be used (Try-All, Hashtagg, Bonz, etc.).

In order to prevent the cranks from rubbing the seat stays, which may happen due to varying crank offsets for each model, it’s recommended to install a 127,5mm or 128mm wide bottom bracket.

- 4) Rear brake. This frame is available for 160mm rotors, has Post Mount rear disc brake mounts, so be sure to use a rear brake of that type. Post Mount brake calipers sit onto the brake mounts, instead of sideways (as is the case on IS calipers).

- 5) Chain tensioner. This frame is designed for use with snail cams. Since the dropouts are spaced at 116mm, the rear hub width plus the 2 snail cams must add up to 116mm.

- 6) Rear hub. Since this frame is designed for use with snail cams, the rear hub width plus the 2 snail cams must add up to 116mm. Most 20” rear hubs are 110mm wide, therefore you’ll need 2x 3mm-thick snails cams, in this case.

- 7) Fork. The steerer tube on the fork must be long enough to reach the top bolt on the stem’s steerer tube clamp.

To ensure this, you must add the length of the headtube (110mm for this frame), plus the cups bits that sit outside the headtube, plus the headset spacers (if any) and/or dust cover sitting under the stem, plus the length of your stem’s steerer tube clamp. Once you’ve done this, you’ll be ready to know if your fork is long enough so that at least 2mm of it remain above the top bolt of your stem’s steerer tube clamp.

Geometry (measured with a 370mm x 40mm fork)
- Space between dropouts: 116mm
- Bottom bracket shell: 70mm
- Head tube: 110mm

- Wheelbase: 920mm
- Chain stay lenght: 327mm
- Bottom bracket height: +55mm
- Head angle: 72º

Finishes
- Available in fluor orange, with Comas Trials black graphics

Weight
- Pending confirmation.

Additional information
If you have any doubts, please contact us on info@trial-bikes.com