Yamaha Wabash RT Geometry: Read Stack, Reach and Standover by Size
Yamaha Wabash RT geometry is published in three size columns, S, M and L. Reading stack, reach and standover together is more useful than treating the letter alone as a fit recommendation. The manufacturer’s one-page sheet provides dimensions, but no conversion from those letters to a prescribed rider height.
Read Yamaha Wabash RT geometry across the columns
The S column pairs a 535mm top tube with a 429mm seat tube. M lists 565mm and 490mm, while L lists 595mm and 551mm. Keep the two row names attached: a seat-tube measurement and a top-tube measurement answer different questions even when both are expressed in millimetres.
Yamaha Wabash RT stack and reach are also separate rows. Stack is 595, 607 and 617mm for S, M and L respectively; reach is 368, 382 and 402mm. A comparison note should retain both figures and the size heading rather than reducing the frame to one number. These are frame geometry entries, not a complete measurement of an assembled cockpit.
Keep standover distinct from rider height
Yamaha Wabash RT standover is 781mm for S, 818mm for M and 852mm for L. The chart does not turn these figures into an inseam rule or state a required clearance. Using a dimension as a rider-height recommendation would add a conclusion that this particular sheet does not supply.
When checking Yamaha Wabash RT frame sizes against an offer, first establish which letter and geometry document describe that bicycle. A seller’s general size name does not establish a match on its own. The museum bicycle pictured here is separate historical Yamaha context and cannot resolve the size of a Wabash.
Interpret the wheelbase row in its printed units
Yamaha Wabash RT wheelbase appears as 1.057, 1.068 and 1.090 beneath a millimetre heading. In this table convention these mean 1057, 1068 and 1090mm, rather than wheelbases of roughly one millimetre. Preserve that formatting distinction when transcribing the sheet. Rear centre remains 464mm and bottom-bracket drop remains 73mm in all three columns; not every row increases with size.
For broader family background, use the existing Yamaha material alongside this specific geometry record. Yamaha topic; Yamaha introduction.
FAQ
Does S identify a recommended rider height?
No. The sheet gives frame dimensions without a rider-height prescription.
Are stack and reach the same measurement?
No. They occupy separate rows with different values for each size.
Does the photograph show a Wabash RT?
No. It shows a historical PAS museum bicycle for Yamaha context.
Sources
Manufacturer geometry sheet (https://www.yamaha-motor.eu/content/dam/yamaha-motor-europe-migrated/pdfs/ebikes/22-285_YAM_eBike_Wabash.pdf).
Photograph credits and permissions
Photograph 1
Original title: YAMAHA PAS Brace-L Special Yamaha Communication Plaza
Creator: PekePON; creator URI: https://commons.wikimedia.org/wiki/User:PekePON
Copyright notice: Embedded sRGB IEC61966-2.1 colour-profile notice: Copyright (c) 1998 Hewlett-Packard Company. This names the colour-profile owner, not the photographer.
Original source URI: https://commons.wikimedia.org/wiki/File:YAMAHA_PAS_Brace-L_Special_Yamaha_Communication_Plaza.jpg
License / permission: CC BY-SA 3.0
License / permission URI: https://creativecommons.org/licenses/by-sa/3.0/
Modification notice: Original Wikimedia-hosted JPEG bytes retained without crop, recompression or colour edits. EXIF and XMP retain Adobe Photoshop Elements 10.0 Windows processing notices, including a saved event on 4 November 2012; earlier processing is unassessed.
Source disclaimer: Historical Yamaha PAS Brace-L Special museum photograph at Yamaha Communication Plaza, as identified by its source. Capture and upload dates do not establish bicycle model year. Related Yamaha brand context only, not a photograph of Wabash RT or MORO-07 or evidence of their dimensions, parts, assistance, fit, condition or compatibility. Exact licence: Creative Commons Attribution-ShareAlike 3.0 Unported, also named CC BY-SA 3.0. No endorsement or warranties are implied; other rights may apply. The unchanged photograph remains under CC BY-SA 3.0; no additional restrictions are imposed.